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Title:
Use of Metabolomics in Improving Assessment of Dietary Intake
Authors:
Guasch-Ferré, Marta; Bhupathiraju, Shilpa N.; Hu, Frank B.
Abstract:
Nutritional metabolomics is rapidly evolving to integrate nutrition with complex metabolomics data to discover new biomarkers of nutritional exposure and status. The purpose of this review is to provide a broad overview of the measurement techniques, study designs, and statistical approaches used in nutrition metabolomics, as well as to describe the current knowledge from epidemiologic studies identifying metabolite profiles associated with the intake of individual nutrients, foods, and dietary patterns. A wide range of technologies, databases, and computational tools are available to integrate nutritional metabolomics with dietary and phenotypic information. Biomarkers identified with the use of high-throughput metabolomics techniques include amino acids, acylcarnitines, carbohydrates, bile acids, purine and pyrimidine metabolites, and lipid classes. The most extensively studied food groups include fruits, vegetables, meat, fish, bread, whole grain cereals, nuts, wine, coffee, tea, cocoa, and chocolate. We identified 16 studies that evaluated metabolite signatures associated with dietary patterns. Dietary patterns examined included vegetarian and lactovegetarian diets, omnivorous diet, Western dietary patterns, prudent dietary patterns, Nordic diet, and Mediterranean diet. Although many metabolite biomarkers of individual foods and dietary patterns have been identified, those biomarkers may not be sensitive or specific to dietary intakes. Some biomarkers represent short-term intakes rather than long-term dietary habits. Nonetheless, nutritional metabolomics holds promise for the development of a robust and unbiased strategy for measuring diet. Still, this technology is intended to be complementary, rather than a replacement, to traditional wellvalidated dietary assessment methods such as food frequency questionnaires that can measure usual diet, the most relevant exposure in nutritional epidemiologic studies.
Published:
2018-01
Title:
"That wasn't really a place to worry about diabetes": Housing access and diabetes self-management among low-income adults
Authors:
Keene, Danya E.; Guo, Monica; Murillo, Sascha
Abstract:
Lack of affordable housing access represents a significant and growing problem for low-income households in the United States and these housing challenges may present barriers to the management of chronic diseases such as type 2 diabetes. In this qualitative study, we examined how both housing challenges and housing resources shaped diabetes self-management behaviors. We conducted semi-structured interviews with 40 low-income residents of one US city, New Haven, Connecticut, who had a diagnosis of type 2 diabetes and either resided in or qualified for subsidized housing. We purposively constructed our sample to include a range of housing experiences (subsidized, unsubsidized, homeless) and treatment regimes. We analyzed the data using grounded theory techniques of inductive coding and memo writing. Our findings suggest multiple ways that housing access can affect diabetes self-management with implications for blood glucose levels and future complications. Specifically, we describe the ways that housing access affected participants' ability to: 1) prioritize their diabetes care, 2) establish and maintain diabetes routines, and 3) afford diabetes-related expenses. Together, our findings show how housing challenges increased the cost of adherence to diabetes management regimes such that inadequately housed individuals had to both invest and sacrifice more for the same outcomes. Our findings suggest that improved affordable housing access may represent an opportunity to improve outcomes and reduce socioeconomic disparities among those living with type 2 diabetes.
Published:
2018
Title:
'Trois Empreintes d’un Même Cachet’: Toward a Historical Definition of Nutrition
Authors:
Ruis, A. R.
Abstract:
Published:
2018
Title:
(No Title)
Authors:
Houlden, Robyn L; Yen, Hope H; Mirrahimi, Arash
Abstract:
There is increased recognition that lifestyle factors, including nutrition, physical activity, emotional well-being and stress management, tobacco use, alcohol consumption, and sleep habits, are major determinants of health. There is a need to teach practicing physicians, medical trainees, and other health care providers how to perform a "lifestyle history." This article proposes 13 screening questions physicians should consider exploring with patients. It provides the rationale and scientific evidence supporting each question and includes key lifestyle counseling points for clinicians to consider.
Published:
2018
Title:
1H NMR-based metabolomics reveals the effect of maternal habitual dietary patterns on human amniotic fluid profile
Authors:
Fotiou, M.; Fotakis, C.; Tsakoumaki, F.; Athanasiadou, E.; Kyrkou, C.; Dimitropoulou, A.; Tsiaka, T.; Chatziioannou, A.C.; Sarafidis, K.; Menexes, G.; Theodoridis, G.; Biliaderis, C.G.; Zoumpoulakis, P.; Athanasiadis, A.P.; Michaelidou, A.-M.
Abstract:
Maternal diet may influence offspring's health, even within well-nourished populations. Amniotic fluid (AF) provides a rational compartment for studies on fetal metabolism. Evidence in animal models indicates that maternal diet affects AF metabolic profile; however, data from human studies are scarce. Therefore, we have explored whether AF content may be influenced by maternal diet, using a validated food-frequency questionnaire and implementing NMR-based metabolomics. Sixty-five AF specimens, from women undergoing second-trimester amniocentesis for prenatal diagnosis, were analysed. Complementary, maternal serum and urine samples were profiled. Hierarchical cluster analysis identified 2 dietary patterns, cluster 1 (C1, n = 33) and cluster 2 (C2, n = 32). C1 was characterized by significantly higher percentages of energy derived from refined cereals, yellow cheese, red meat, poultry, and "ready-to-eat" foods, while C2 by higher (P < 0.05) whole cereals, vegetables, fruits, legumes, and nuts. 1H NMR spectra allowed the identification of metabolites associated with these dietary patterns; glucose, alanine, tyrosine, valine, citrate, cis-acotinate, and formate were the key discriminatory metabolites elevated in C1 AF specimens. This is the first evidence to suggest that the composition of AF is influenced by maternal habitual dietary patterns. Our results highlight the need to broaden the knowledge on the importance of maternal nutrition during pregnancy. © 2018 The Author(s).
Published:
2018
Title:
A 48-Hour Vegan Diet Challenge in Healthy Women and Men Induces a BRANCH-Chain Amino Acid Related, Health Associated, Metabolic Signature
Authors:
Draper, Colleen Fogarty; Vassallo, Irene; Di Cara, Alessandro; Milone, Cristiana; Comminetti, Ornella; Monnard, Irina; Godin, Jean-Philippe; Scherer, Max; Su, MingMing; Jia, Wei; Guiraud, Seu-Ping; Praplan, Fabienne; Guignard, Laurence; Ammon Zufferey, Corinne; Shevlyakova, Maya; Emami, Nashmil; Moco, Sofia; Beaumont, Maurice; Kaput, Jim; Martin, Francois-Pierre
Abstract:
SCOPE: Research is limited on diet challenges to improve health. A short-term, vegan protein diet regimen nutritionally balanced in macronutrient composition compared to an omnivorous diet is hypothesized to improve metabolic measurements of blood sugar regulation, blood lipids, and amino acid metabolism. METHODS AND RESULTS: This randomized, cross-over, controlled vegan versus animal diet challenge is conducted on 21 (11 female,10 male) healthy participants. Fasting plasma is measured during a 3 d diet intervention for clinical biochemistry and metabonomics. Intervention diet plans meet individual caloric needs. Meals are provided and supervised. Diet compliance is monitored. CONCLUSIONS: The vegan diet lowers triglycerides, insulin and homeostatic model assessment (HOMA-IR), bile acids, elevated magnesium levels, and changed branched-chain amino acids (BCAAs) metabolism (p
Published:
2018
Title:
A Beginner's Guide to Analysis of RNA Sequencing Data
Authors:
Koch, Clarissa M.; Chiu, Stephen F.; Akbarpour, Mahzad; Bharat, Ankit; Ridge, Karen M.; Bartom, Elizabeth T.; Winter, Deborah R.
Abstract:
Since the first publications coining the term RNA-seq (RNA sequencing) appeared in 2008, the number of publications containing RNA-seq data has grown exponentially, hitting an all-time high of 2,808 publications in 2016 (PubMed). With this wealth of RNA-seq data being generated, it is a challenge to extract maximal meaning from these datasets, and without the appropriate skills and background, there is risk of misinterpretation of these data. However, a general understanding of the principles underlying each step of RNA-seq data analysis allows investigators without a background in programming and bioinformatics to critically analyze their own datasets as well as published data. Our goals in the present review are to break down the steps of a typical RNA-seq analysis and to highlight the pitfalls and checkpoints along the way that are vital for bench scientists and biomedical researchers performing experiments that use RNA-seq.
Published:
2018
Title:
A Ketone Ester Drink Lowers Human Ghrelin and Appetite
Authors:
Stubbs, Brianna J.; Cox, Pete J.; Evans, Rhys D.; Cyranka, Malgorzata; Clarke, Kieran; de Wet, Heidi
Abstract:
OBJECTIVE The ketones d-β-hydroxybutyrate (BHB) and acetoacetate are elevated during prolonged fasting or during a "ketogenic" diet. Although weight loss on a ketogenic diet may be associated with decreased appetite and altered gut hormone levels, it is unknown whether such changes are caused by elevated blood ketones. This study investigated the effects of an exogenous ketone ester (KE) on appetite. METHODS Following an overnight fast, subjects with normal weight (n = 15) consumed 1.9 kcal/kg of KE, or isocaloric dextrose (DEXT), in drinks matched for volume, taste, tonicity, and color. Blood samples were analyzed for BHB, glucose, insulin, ghrelin, glucagon-like peptide 1 (GLP-1), and peptide tyrosine tyrosine (PYY), and a three-measure visual analogue scale was used to measure hunger, fullness, and desire to eat. RESULTS KE consumption increased blood BHB levels from 0.2 to 3.3 mM after 60 minutes. DEXT consumption increased plasma glucose levels between 30 and 60 minutes. Postprandial plasma insulin, ghrelin, GLP-1, and PYY levels were significantly lower 2 to 4 hours after KE consumption, compared with DEXT consumption. Temporally related to the observed suppression of ghrelin, reported hunger and desire to eat were also significantly suppressed 1.5 hours after consumption of KE, compared with consumption of DEXT. CONCLUSIONS Increased blood ketone levels may directly suppress appetite, as KE drinks lowered plasma ghrelin levels, perceived hunger, and desire to eat.
Published:
2018
Title:
A Mediterranean diet supplemented with dairy foods improves markers of cardiovascular risk: Results from the MedDairy randomized controlled trial
Authors:
Wade, A.T.; Davis, C.R.; Dyer, K.A.; Hodgson, J.M.; Woodman, R.J.; Murphy, K.J.
Abstract:
Background: The Mediterranean diet (MedDiet) offers benefits to cardiovascular health but may not meet Western recommendations for calcium and dairy intake, which could impede long-term adoption. Objective: The current study aimed to determine the effect of a MedDiet supplemented with dairy foods on cardiovascular risk factors. Design: A randomized, controlled, crossover design compared a MedDiet with 3-4 daily servings of dairy (MedDairy) and a low-fat (LF) control diet. Forty-one participants aged ≥45 y and at risk of cardiovascular disease (CVD) were randomly allocated to their first intervention, either the MedDairy or LF diet. Participants followed each intervention for 8 wk, and an 8-wk washout period separated interventions. The primary outcome was home-measured systolic blood pressure (SBP) assessed in the morning, afternoon, and evening. Secondary outcomes included clinic-measured blood pressure (morning), body composition, blood lipids, C-reactive protein (CRP), plasma glucose, serum insulin, and the Framingham Risk Score. Results: Compared with the LF intervention, the MedDairy intervention resulted in a significantly lower morning SBP (mean difference: −1.6 mm Hg; 95% CI: −2.8, −0.4 mm Hg; P = 0.01), lower morning diastolic blood pressure (mean difference: −1.0; 95% CI: −1.7, −0.2 mm Hg; P = 0.01) and clinic SBP (mean difference: −3.5 mm Hg; 95% CI: −6.4, −0.7 mm Hg; P = 0.02), significantly higher HDL cholesterol (mean difference: 0.04 mmol/L; 95% CI: 0.01, 0.06 mmol/L; P < 0.01), lower triglycerides (mean difference: = −0.05 mmol/L; 95% CI: −0.08, −0.01 mmol/L; P < 0.01), and lower ratio of total to HDL cholesterol (mean difference: −0.4; 95% CI: −0.6, −0.2; P
Published:
2018
Title:
A Nutritional Perspective of Ketogenic Diet in Cancer: A Narrative Review
Authors:
Oliveira, Camila L. P.; Mattingly, Stephanie; Schirrmacher, Ralf; Sawyer, Michael B.; Fine, Eugene J.; Prado, Carla M.
Abstract:
The predominant use of glucose anaerobically by cancer cells (Warburg effect) may be the most important characteristic the majority of these cells have in common and, therefore, a potential metabolic pathway to be targeted during cancer treatment. Because this effect relates to fuel oxidation, dietary manipulation has been hypothesized as an important strategy during cancer treatment. As such, the concept of a ketogenic diet (KD) in cancer emerged as a metabolic therapy (ie, targeting cancer cell metabolism) rather than a dietary approach. The therapeutic mechanisms of action of this high-fat, moderate-to-low protein, and very-low-carbohydrate diet may potentially influence cancer treatment and prognosis. Considering the lack of a dietetics-focused narrative review on this topic, we compiled the evidence related to the use of this diet in humans with diverse cancer types and stages, also focusing on the nutrition and health perspective. The use of KD in cancer shows potentially promising, but inconsistent, results. The limited number of studies and differences in study design and characteristics contribute to overall poor quality evidence, limiting the ability to draw evidence-based conclusions. However, the potential positive influences a KD may have on cancer treatment justify the need for well-designed clinical trials to better elucidate the mechanisms by which this dietary approach affects nutritional status, cancer prognosis, and overall health. The role of registered dietitian nutritionists is demonstrated to be crucial in planning and implementing KD protocols in oncology research settings, while also ensuring patients' adherence and optimal nutritional status.
Published:
2018
Title:
A cross-sectional comparison of brain glucose and ketone metabolism in cognitively healthy older adults, mild cognitive impairment and early Alzheimer's disease
Authors:
Croteau, E.; Castellano, C. A.; Fortier, M.; Bocti, C.; Fulop, T.; Paquet, N.; Cunnane, S. C.
Abstract:
INTRODUCTION: Deteriorating brain glucose metabolism precedes the clinical onset of Alzheimer's disease (AD) and appears to contribute to its etiology. Ketone bodies, mainly β-hydroxybutyrate and acetoacetate, are the primary alternative brain fuel to glucose. Some reports suggest that brain ketone metabolism is unchanged in AD but, to our knowledge, no such data are available for MCI. OBJECTIVE: To compare brain energy metabolism (glucose and acetoacetate) and some brain morphological characteristics in cognitively healthy older adult controls (CTL), mild cognitive impairment (MCI) and early AD. METHODS: 24 CTL, 20 MCI and 19AD of similar age and metabolic phenotype underwent a dual-tracer PET and MRI protocol. The uptake rate constants and cerebral metabolic rate of glucose (KGlu, CMRGlu) and acetoacetate (KAcAc, CMRAcAc) were evaluated with PET using [18F]-fluorodeoxyglucose ([18F]-FDG), a glucose analogue, and [11C]-acetoacetate ([11C]-AcAc), a ketone PET tracer. Regional brain volume and cortical thickness were evaluated by T1-weighted MRI. RESULTS: In AD compared to CTL, CMRGlu was ~11% lower in the frontal, parietal, temporal lobes and in the cingulate gyrus (p
Published:
2018
Title:
A dietary pattern based on estrogen metabolism is associated with breast cancer risk in a prospective cohort of postmenopausal women
Authors:
Guinter, M.A.; McLain, A.C.; Merchant, A.T.; Sandler, D.P.; Steck, S.E.
Abstract:
Increased exposure to estrogen is a risk factor for postmenopausal breast cancer, and dietary factors can influence estrogen metabolism. However, studies of diet and breast cancer have been inconclusive. We developed a dietary pattern associated with levels of unconjugated estradiol and the ratio of 2- and 16-hydroxylated estrogen metabolites in a subsample of Prostate, Lung, Colorectal and Ovarian Screening Trial (PLCO) participants (n = 653) using reduced rank regression, and examined its association with postmenopausal breast cancer prospectively in the larger PLCO cohort (n = 27,488). The estrogen-related dietary pattern (ERDP) was comprised of foods with positively-weighted intakes (non-whole/refined grains, tomatoes, cruciferous vegetables, cheese, fish/shellfish high in ω-3 fatty acids, franks/luncheon meats) and negatively-weighted intakes (nuts/seeds, other vegetables, fish/shellfish low in ω-3 fatty acids, yogurt, coffee). A 1-unit increase in the ERDP score was associated with an increase in total (HR: 1.09, 95% CI: 1.01–1.18), invasive (HR: 1.13; 95% CI: 1.04–1.24) and estrogen receptor (ER)-positive (HR: 1.13, 95% CI: 1.02–1.24) breast cancer risk after adjustment for confounders. Associations were observed for the fourth quartile of ERDP compared with the first quartile for overall breast cancer (HR: 1.14; 95% CI: 0.98–1.32), invasive cases (HR: 1.20, 95% CI: 1.02–1.42) and ER-positive cases (HR: 1.19; 95% CI: 0.99–1.41). The increased risk associated with increasing ERDP score was more apparent in strata of some effect modifiers (postmenopausal hormone therapy non-users and non-obese participants) where the relative estrogen exposure due to that factor was lowest, although the p values for interaction were not statistically significant. Results suggest a dietary pattern based on estrogen metabolism is positively associated with postmenopausal breast cancer risk, possibly through an estrogenic influence. © 2018 UICC
Published:
2018
Title:
A longitudinal 20 years of follow up showed a decrease in the survival of heart failure patients who maintained low LDL cholesterol levels
Authors:
Charach, G.; Argov, O.; Nochomovitz, H.; Rogowski, O.; Charach, L.; Grosskopf, I.
Abstract:
Background: Treatment by statins is well established for primary and secondary prevention of cardiac events but may be hazardous for patients with heart failure (HF)., Aim: We studied the long-term (20years) association between baseline low-density lipoprotein cholesterol (LDL-c) levels and clinical outcome in patients with severe HF., Design: Patients were divided into those with plasma LDL-c levels 110 mg/dl (Group 1) or \textgreater110 mg/dl (Group 2)., Methods: The mean follow-up of 305 study patients with advanced HF who had an average NYHA score of 2.7 was 11.3 years (range 15 months to 20 years). Mortality during follow-up was 43%., Results: Patients with the highest baseline LDL-c levels had significantly improved outcome, whereas those with the lowest LDL-c levels had the highest mortality. This paradoxical effect was prominent in patients\textless70years old. The negative association of LDL-c levels and mortality was most conspicuous among the HF patients who were treated with statins., Discussion and Conclusion: Long-term follow-up findings showed that low LDL-c levels may predict a less favorable outcome in advanced HF, particularly in patients\textless70years old and those taking statins. This negates the protocol of following an aggressive LDL-c-lowering strategy in younger patients with HF.
Published:
2018
Title:
A methodological approach to identify the most reliable human milk collection method for compositional analysis: a systematic review protocol
Authors:
Leghi, Gabriela E.; Middleton, Philippa F.; Muhlhausler, Beverly S.
Abstract:
BACKGROUND: Breast milk composition has been reported to vary significantly between individual women and between different populations. However, the composition is also known to vary within the same woman between different days, within the same day, and even across the same feed. Therefore, it is unclear to what extent variations in composition are due to variations in sampling methodology between studies. The purpose of this systematic review is to compare the results obtained for breast milk macronutrient composition between studies utilizing different sampling methodologies and to use this as a basis to determine the most robust and consistent sampling approach as an alternative to full expression (gold standard). METHODS: The EMBASE, MEDLINE/PubMed, Cochrane Library, Scopus, Web of Science, and ProQuest Dissertations and Theses Global databases will be searched for relevant articles. Observational studies, including cross-sectional, comparative cohort, and longitudinal cohort studies which involve lactating women who are breastfeeding (exclusively or not) or expressing (manually or using a breast pump) at any lactation stage will be included. This review will compare different methods of breast milk collection used in research studies which report macronutrient levels (protein, fat, lactose). Two review authors will independently screen titles and abstracts of studies identified by the literature search to determine articles for the full text screening. Quality assessment of included articles will be conducted independently by two review authors using the Newcastle-Ottawa scale. DISCUSSION: It is important to identify the most reliable and practical method of human milk collection which best represents the average composition of the milk that is being consumed by the infant. This systematic review will be critical for ensuring that we determine a robust and consistent sampling approach to use in future studies of evaluating breast milk composition in a larger population. Identifying a recommended standard collection protocol will also provide more opportunities for sharing and combining data from different research groups, thus enhancing replicability and knowledge in the field. SYSTEMATIC REVIEW REGISTRATION: PROSPERO CRD42017072563.
Published:
2018
Title:
A model of the dynamics of household vegetarian and vegan rates in the U.K
Authors:
Waters, James
Abstract:
Although there are many studies of determinants of vegetarianism and veganism, there have been no previous studies of how their rates in a population jointly change over time. In this paper, we present a flexible model of vegetarian and vegan dietary choices, and derive the joint dynamics of rates of consumption. We fit our model to a pseudo-panel with 23 years of U.K. household data, and find that while vegetarian rates are largely determined by current household characteristics, vegan rates are additionally influenced by their own lagged value. We solve for equilibrium rates of vegetarianism and veganism, show that rates of consumption return to their equilibrium levels following a temporary event which changes those rates, and estimate the effects of campaigns to promote non-meat diets. We find that a persistent vegetarian campaign has a significantly positive effect on the rate of vegan consumption, in answer to an active debate among vegan campaigners.
Published:
2018
Title:
A molecular approach to mitophagy and mitochondrial dynamics
Authors:
Yoo, Seung Min; Jung, Yong Keun
Abstract:
Mitochondrial quality control systems are essential for the maintenance of functional mitochondria. At the organelle level, they include mitochondrial biogenesis, fusion and fission, to compensate for mitochondrial function, and mitophagy, for degrading damaged mitochondria. Specifically, in mitophagy, the target mitochondria are recognized by the autophagosomes and delivered to the lysosome for degradation. In this review, we describe the mechanisms of mitophagy and the factors that play an important role in this process. In particular, we focus on the roles of mitophagy adapters and receptors in the recognition of damaged mitochondria by autophagosomes. In addition, we also address a functional association of mitophagy with mitochondrial dynamics through the interaction of mitophagy adaptor and receptor proteins with mitochondrial fusion and fission proteins.
Published:
2018
Title:
A stable method for routine analysis of oxylipins from dried blood spots using ultra-high performance liquid chromatography-tandem mass spectrometry
Authors:
Hewawasam, Erandi; Liu, Ge; Jeffery, David W.; Muhlhausler, Beverly S.; Gibson, Robert A.
Abstract:
Oxylipins are biologically important lipid mediators that are derived enzymatically from polyunsaturated fatty acids (PUFA) and have a major role in regulating inflammatory processes. The currently available methods for measuring oxylipins from human biological samples have limitations, which restricts their use in large studies. We have developed a novel method for measuring 21 oxylipins from dried blood spot (DBS) using ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) and stable isotope dilution analysis. Our new method is reproducible and precise and enables the high throughput analysis and quantitation of bioactive oxylipins in small volumes of blood. In the future, this new method can be readily applied to measure oxylipins in large studies. Abstract Oxylipins are downstream lipid mediators enzymatically-produced from polyunsaturated fatty acids (PUFA) that are implicated as the biological effectors of these fatty acids. Recently reported methods for the quantitation of oxylipins require complex extraction procedures. In this study, we report the development and validation of a novel system for the quantitation of 21 individual oxylipins from a dried blood spot (DBS) using ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) and stable isotope dilution analysis. Linearity and precision of the method were determined and the stabilities of the 12 most abundant oxylipins were tested during 2 months of storage at room temperature, after being spiked into blood and prepared as DBS on PUFAcoat™ paper. Responses were linear across the concentration range analysed for all oxylipins (r2 values ranged from 0.953 to 0.998). Intra-day and inter-day variations were ≤16% for all oxylipins. Recovery of oxylipins from the DBS ranged from 80 - 115%. The 12 spiked oxylipins were stable for 2 months when stored as DBS at room temperature. Our method is reproducible and precise, and provides the opportunity to accurately quantitate these oxylipins in a small sample volume.
Published:
2018
Title:
Acceleration of BMI in Early Childhood and Risk of Sustained Obesity
Authors:
Geserick, Mandy; Vogel, Mandy; Gausche, Ruth; Lipek, Tobias; Spielau, Ulrike; Keller, Eberhard; Pfäffle, Roland; Kiess, Wieland; Körner, Antje
Abstract:
Abstract Background The dynamics of body-mass index (BMI) in children from birth to adolescence are unclear, and whether susceptibility for the development of sustained obesity occurs at a specific age in children is important to determine. Methods To assess the age at onset of obesity, we performed prospective and retrospective analyses of the course of BMI over time in a population-based sample of 51,505 children for whom sequential anthropometric data were available during childhood (0 to 14 years of age) and adolescence (15 to 18 years of age). In addition, we assessed the dynamics of annual BMI increments, defined as the change in BMI standard-deviation score per year, during childhood in 34,196 children. Results In retrospective analyses, we found that most of the adolescents with normal weight had always had a normal weight throughout childhood. Approximately half (53%) of the obese adolescents had been overweight or obese from 5 years of age onward, and the BMI standard-deviation score further inc...
Published:
2018
Title:
Accurate Quantitation and Analysis of Nitrofuran Metabolites, Chloramphenicol, and Florfenicol in Seafood by Ultrahigh-Performance Liquid Chromatography-Tandem Mass Spectrometry: Method Validation and Regulatory Samples
Authors:
Aldeek, F.; Hsieh, K.C.; Ugochukwu, O.N.; Gerard, G.; Hammack, W.
Abstract:
We developed and validated a method for the extraction, identification, and quantitation of four nitrofuran metabolites, 3-amino-2-oxazolidinone (AOZ), 3-amino-5-morpholinomethyl-2-oxazolidinone (AMOZ), semicarbazide (SC), and 1-aminohydantoin (AHD), as well as chloramphenicol and florfenicol in a variety of seafood commodities. Samples were extracted by liquid-liquid extraction techniques, analyzed by ultrahigh-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS), and quantitated using commercially sourced, derivatized nitrofuran metabolites, with their isotopically labeled internal standards in-solvent. We obtained recoveries of 90-100% at various fortification levels. The limit of detection (LOD) was set at 0.25 ng/g for AMOZ and AOZ, 1 ng/g for AHD and SC, and 0.1 ng/g for the phenicols. Various extraction methods, standard stability, derivatization efficiency, and improvements to conventional quantitation techniques were also investigated. We successfully applied this method to the identification and quantitation of nitrofuran metabolites and phenicols in 102 imported seafood products. Our results revealed that four of the samples contained residues from banned veterinary drugs. © 2017 American Chemical Society.
Published:
2018
Title:
Acute effects of sauna bathing on cardiovascular function
Authors:
Laukkanen, Tanjaniina; Kunutsor, Setor K.; Zaccardi, Francesco; Lee, Earric; Willeit, Peter; Khan, Hassan; Laukkanen, Jari A.
Abstract:
© Macmillan Publishers Ltd., part of Springer Nature 2018. Emerging evidence suggests beneficial effects of sauna bathing on the cardiovascular system. However, the effects of sauna bathing on parameters of cardiovascular function and blood-based biomarkers are uncertain. We aimed to investigate whether sauna bathing induces changes in arterial stiffness, blood pressure (BP), and several blood-based biomarkers. We conducted an experimental study including 102 participants (mean age (SD): 51.9 (9.2) years, 56% male) who had at least one cardiovascular risk factor. Participants were exposed to a single sauna session (duration: 30 min; temperature: 73 °C; humidity: 10-20%). Cardiovascular as well as blood-based parameters were collected before, immediately after, and after 30-min recovery. Mean carotid-femoral pulse wave velocity was 9.8 (2.4) m/s before sauna and decreased to 8.6 (1.6) m/s immediately after sauna (p \textless 0.0001). Mean systolic BP decreased after sauna exposure from 137 (16) to 130 (14) mmHg (p \textless 0.0001) and diastolic BP from 82 (10) to 75 (9) mmHg (p \textless 0.0001). Systolic BP after 30 min recovery remained lower compared to pre-sauna levels. There were significant changes in hematological variables during sauna bathing. Plasma creatinine levels increased slightly from sauna until recovery period, whereas sodium and potassium levels remained constant. This study demonstrates that sauna bathing for 30 min has beneficial effects on arterial stiffness, BP, and some blood-based biomarkers. These findings may provide new insights underlying the emerging associations between sauna bathing and reduced risk of cardiovascular outcomes.
Published:
2018
Title:
Adapting to insulin resistance in obesity: role of insulin secretion and clearance
Authors:
Jung, Sang Hee; Jung, Chan Hee; Reaven, Gerald M.; Kim, Sun H.
Abstract:
AIMS/HYPOTHESIS: The aim of this study was to quantify the relative contributions of increased insulin secretion rate (ISR) and decreased insulin clearance rate (ICR) in the compensatory hyperinsulinaemia characteristic of insulin-resistant individuals without diabetes. METHODS: Obese (BMI \textgreater/=30 kg/m(2)) individuals without diabetes (n = 91) were identified from a registry of volunteers. Volunteers underwent the following measurements: oral glucose tolerance; insulin resistance (steady-state plasma glucose [SSPG] concentration during the insulin suppression test [IST]); ISR (using the graded glucose infusion test [GGIT]); and ICR (using the IST and GGIT). Participants were stratified into tertiles based on SSPG concentration: SSPG-1(insulin-sensitive); SSPG-2 (intermediate); and SSPG-3 (insulin-resistant). RESULTS: There were no differences in BMI and waist circumference among the SSPG tertiles. Serum alanine aminotransferase concentrations were higher in the SSPG-2 and SSPG-3 groups compared with the SSPG-1 group (p = 0.02). Following an oral glucose challenge, there was a progressive increase in the total integrated insulin response from the most insulin-sensitive to the most insulin-resistant tertiles (p \textless 0.001). Following intravenous glucose, the SSPG-3 group had significantly greater integrated glucose (median [interquartile range], 32.9 [30.8-36.3] mmol/l x h) and insulin responses (1711 [1476-2223] mmol/l x h) compared with the SSPG-1 group (30.3 [28.8-32.9] mmol/l x h, p = 0.04, and 851 [600-1057] pmol/l x h, p \textless 0.001, respectively). Furthermore, only the SSPG-3 group had significant changes in both ISR and ICR (p \textless 0.001). In the SSPG-2 group, only the ICR was significantly decreased compared with the SSPG-1 group. Therefore, ICR progressively declined during the IST with increasing insulin resistance (SSPG-1, 0.48 [0.41-0.59]; SSPG-2, 0.43 [0.39-0.50]; SSPG-3, 0.34 [0.31-0.40]). CONCLUSIONS/INTERPRETATION: While both increases in ISR and decreases in ICR compensate for insulin resistance, decreases in ICR may provide the first adaptation to decreased insulin sensitivity.
Published:
2018
Title:
Adherence to Diabetes Dietary Guidelines Assessed Using a Validated Questionnaire Predicts Glucose Control in Adults With Type 2 Diabetes
Authors:
Raj, G.D.; Hashemi, Z.; Soria Contreras, D.C.; Babwik, S.; Maxwell, D.; Bell, R.C.; Chan, C.B.
Abstract:
Objectives: The purpose of this study was to determine predominant deviations from Canadian Diabetes Association (CDA) nutrition therapy guidelines for Canadians with type 2 diabetes as a prelude to developing relevant interventions. We hypothesized that lack of adherence to these guidelines would be associated with higher glycated hemoglobin (A1C) levels. Methods: A cross-sectional trial was conducted to evaluate associations between dietary adherence to CDA and Health Canada guidelines and blood glucose control. Diet was assessed using 3-day diet records and a diabetes-specific validated questionnaire, the Perceived Dietary Adherence Questionnaire (PDAQ). A total of 80 adult participants with type 2 diabetes volunteered. The main outcome measures were A1C levels, adherence to dietary guidelines and food sources of nutrients. Simple and multiple linear regressions that tested the effects of adherence to dietary guidelines concerning A1C levels were conducted; p<0.05 was considered significant. Results: Participants: average age, 61.2±10.4 (standard deviation) years; 48 females and 32 males had A1C levels of 7.3%±1.3% (56±6.3 mmol/mol). Participants' reported mean daily intakes of sodium and saturated fat exceeded CDA nutrition therapy guidelines. Cured meats, fast foods and snack foods were all major contributors to intake of sodium and saturated fat. Saturated fat (r=0.341) and sodium intakes (r=0.296) and total PDAQ scores (r=–0.417) were correlated with A1C levels (p
Published:
2018
Title:
Advances in Understanding the Molecular Basis of the Mediterranean Diet Effect
Authors:
Corella, Dolores; Coltell, Oscar; Macian, Fernando; Ordovás, José M.
Abstract:
Increasingly, studies showing the protective effects of the Mediterranean diet (MedDiet) on different diseases (cardiovascular, diabetes, some cancers, and even total mortality and aging indicators) are being published. The scientific evidence level for each outcome is variable, and new studies are needed to better understand the molecular mechanisms whereby the MedDiet may exercise its effects. Here, we present recent advances in understanding the molecular basis of MedDiet effects, mainly focusing on cardiovascular diseases but also discussing other related diseases. There is heterogeneity in defining the MedDiet, and it can, owing to its complexity, be considered as an exposome with thousands of nutrients and phytochemicals. We review MedDiet composition and assessment as well as the latest advances in the genomic, epigenomic (DNA methylation, histone modifications, microRNAs, and other emerging regulators), transcriptomic (selected genes and whole transcriptome), and metabolomic and metagenomic aspects of the MedDiet effects (as a whole and for its most typical food components). We also present a critical review of the limitations of the studies undertaken and propose new analyses and greater bioinformatic integration to better understand the most important molecular mechanisms whereby the MedDiet as a whole, or its main food components, may exercise their protective effects.
Published:
2018
Title:
Alzheimer's Amyloid-β is an Antimicrobial Peptide: A Review of the Evidence
Authors:
Gosztyla, Maya L.; Brothers, Holly M.; Robinson, Stephen R.
Abstract:
The amyloid-β (Aβ) peptide has long been considered to be the driving force behind Alzheimer's disease (AD). However, clinical trials that have successfully reduced Aβ burden in the brain have not slowed the cognitive decline, and in some instances, have resulted in adverse outcomes. While these results can be interpreted in different ways, a more nuanced picture of Aβ is emerging that takes into account the facts that the peptide is evolutionarily conserved and is present throughout life in cognitively normal individuals. Recent evidence indicates a role for Aβ as an antimicrobial peptide (AMP), a class of innate immune defense molecule that utilizes fibrillation to protect the host from a wide range of infectious agents. In humans and in animal models, infection of the brain frequently leads to increased amyloidogenic processing of the amyloid-β protein precursor (AβPP) and resultant fibrillary aggregates of Aβ. Evidence from in vitro and in vivo studies demonstrates that Aβ oligomers have potent, broad-spectrum antimicrobial properties by forming fibrils that entrap pathogens and disrupt cell membranes. Importantly, overexpression of Aβ confers increased resistance to infection from both bacteria and viruses. The antimicrobial role of Aβ may explain why increased rates of infection have been observed in some of the AD clinical trials that depleted Aβ. Perhaps progress toward a cure for AD will accelerate once treatment strategies begin to take into account the likely physiological functions of this enigmatic peptide.
Published:
2018
Title:
An anti-inflammatory approach to the dietary management of multiple sclerosis: A condensed review
Authors:
Labuschagne, L.; Blaauw, R.
Abstract:
Multiple sclerosis (MS) is a chronic, inflammatory, neurodegenerative demyelinating disease of the central nervous system (CNS). Inflammation is increased by high-energy Western-style diets, typically high in salt, animal fat, red meat, sugar-sweetened drinks and fried food, and low in fibre, as well as lack of physical exercise. An anti-inflammatory dietary regimen, with or without administration of dietary supplements, supporting the general trend towards an amelioration of inflammatory status, should be considered. Understanding the role of gut microbiota in health and disease can lay the foundation to treat chronic diseases by modifying the composition of gut microbiota through lifestyle choices, including dietary habits and possibly probiotic supplementation. Evidence from experimental, epidemiologic and clinical studies supports the potential association between poor vitamin D status and the risk of developing MS, as well as an adverse disease course. Correcting vitamin D status seems plausible in patients with MS. © 2018 The Author(s).
Published:
2018
Title:
Ancient Thali Diet: Gut Microbiota, Immunity, and Health
Authors:
Shondelmyer, Kaitlyn; Knight, Rob; Sanivarapu, Anusha; Ogino, Shuji; Vanamala, Jairam K. P.
Abstract:
Diet provides macronutrients (carbohydrates, proteins, and fats), micronutrients (vitamins and minerals), and phytochemicals (non-nutrient bioactive compounds). Emerging evidence suggests that above dietary components can directly impact the composition and metabolic activity of the mammalian gut microbiota and in turn, affect both physical and mental health. There is a growing recognition that rise in chronic disease burden in Western countries may due to progressive loss of beneficial bacteria and microbial diversity. This perspective explores the possibility of using Indian thali, an ancient approach to diet that provides both fiber and different phytochemicals by incorporating a variety of plant foods in different colors. This variety helps to restore diversity in the gut bacteria and may potentially prevent or reverse chronic disease, such as colon cancer or type 2 diabetes.
Published:
2018
Title:
Antagonizing CD105 enhances radiation sensitivity in prostate cancer
Authors:
Madhav, Anisha; Andres, Allen; Duong, Frank; Mishra, Rajeev; Haldar, Subhash; Liu, Zhenqiu; Angara, Bryan; Gottlieb, Roberta; Zumsteg, Zachary S.; Bhowmick, Neil A.
Abstract:
Radiation therapy is the primary intervention for nearly half of the patients with localized advanced prostate cancer and standard of care for recurrent disease following surgery. The development of radiation-resistant disease is an obstacle for nearly 30-50% of patients undergoing radiotherapy. A better understanding of mechanisms that lead to radiation resistance could aid in the development of sensitizing agents to improve outcome. Here we identified a radiation-resistance pathway mediated by CD105, downstream of BMP and TGF-β signaling. Antagonizing CD105-dependent BMP signaling with a partially humanized monoclonal antibody, TRC105, resulted in a significant reduction in clonogenicity when combined with irradiation. In trying to better understand the mechanism for the radio-sensitization, we found that radiation-induced CD105/BMP signaling was sufficient and necessary for the upregulation of sirtuin 1 (SIRT1) in contributing to p53 stabilization and PGC-1α activation. Combining TRC105 with irradiation delayed DNA damage repair compared to irradiation alone. However, in the absence of p53 function, combining TRC105 and radiation resulted in no reduction in clonogenicity compared to radiation alone, despite similar reduction of DNA damage repair observed in p53-intact cells. This suggested DNA damage repair was not the sole determinant of CD105 radio-resistance. As cancer cells undergo an energy deficit following irradiation, due to the demands of DNA and organelle repair, we examined SIRT1's role on p53 and PGC-1α with respect to glycolysis and mitochondrial biogenesis, respectively. Consequently, blocking the CD105-SIRT1 axis was found to deplete the ATP stores of irradiated cells and cause G2 cell cycle arrest. Xenograft models supported these findings that combining TRC105 with irradiation significantly reduces tumor size over irradiation alone (p value = 10-9). We identified a novel synthetic lethality strategy of combining radiation and CD105 targeting to address the DNA repair and metabolic addiction induced by irradiation in p53-functional prostate cancers.
Published:
2018
Title:
Anthropometric and physiologic characteristics in white and British Indian vegetarians and nonvegetarians in the UK Biobank
Authors:
Tong, Tammy Yn; Key, Timothy J.; Sobiecki, Jakub G.; Bradbury, Kathryn E.
Abstract:
Background: A detailed description of anthropometric and physiologic characteristics of persons in different diet groups is lacking. Objective: We aimed to perform cross-sectional analyses of diet group with anthropometric and physiologic characteristics in a large cohort in the United Kingdom. Design: The UK Biobank recruited ∼500,000 middle-aged participants throughout the United Kingdom in 2006-2010. Anthropometric indexes (height, weight, waist and hip circumference, body composition) and other physiologic characteristics (heel bone mineral density, grip strength, blood pressure, pulse rate) were measured following standardized protocols. We estimated the age-adjusted means of each characteristic in 6 diet groups (198,166 regular meat eaters, 199,784 low meat eaters, 4381 poultry eaters, 9674 fish eaters, 6366 vegetarians, and 378 vegans) in white women and men, and in 2 diet groups (3322 meat eaters and 1186 vegetarians) in British Indian women and men. Results: In white women, after adjustment for age and compared with regular meat eaters, non-red meat eaters had lower adiposity (e.g., 4.5% lower body fat in vegan women) and lower systolic and diastolic blood pressure (-4.2 and -3.3 mm Hg, respectively), and generally lower heel bone mineral density t-score (-0.26). Patterns of differences by diet group were similar in white men. In the Indian population, compared with meat eaters, vegetarian women were shorter (-1.1 cm) and had lower lean mass (-0.5 kg), and both vegetarian women and men had lower grip strength (-1.3 and -1.4 kg, respectively). No significant differences in the other characteristics were observed. Conclusions: Differences in anthropometric and physiologic characteristics were observed across diet groups in white participants, but fewer differences were observed in British Indian participants. The observed differences may be important as intermediate markers of long-term health in different diet groups. This observational study was registered at http://www.isrctn.com/ as ISRCTN10125697.
Published:
2018
Title:
Anti-glycation, carbonyl trapping and anti-inflammatory activities of chrysin derivatives
Authors:
Hwang, S.H.; Kim, H.Y.; Zuo, G.; Wang, Z.; Lee, J.-Y.; Lim, S.S.
Abstract:
The aim of this study was searching anti-glycation, carbonyl trapping and anti-inflammatory activities of chrysin derivatives. The inhibitory effect of chrysin on advanced glycation end-products (AGEs) was investigated by trapping methylglyoxal (MGO), and MGO-conjugated adducts of chrysin were analyzed using LC-MS/MS. The mono- or di-MGO-conjugated adducts of chrysin were present at 63.86 and 29.69% upon 48 h of incubation at a chrysin:MGO ratio of 1:10. The MGO adducted positions on chrysin were at carbon 6 or 6 & 8 in the A ring by classic aldol condensation. To provide applicable knowledge for developing chrysin derivatives as AGE inhibitors, we synthesized several O-alkyl or ester derivatives of chrysin and compared their AGE formation inhibitory, anti-inflammatory, and water solubility characteristics. The results showed that 5,7-di-O-acetylchrysin possessed higher AGE inhibitory and water solubility qualities than original chrysin, and retained the anti-inflammation activity. These results suggested that 5,7-di-O-acetylchrysin could be a potent functional food ingredient as an AGE inhibitor and anti-inflammatory agent, and promotes the development of the use of chrysin in functional foods. © 2018 by the authors.
Published:
2018
Title:
Anti-oxidant and anti-inflammatory activity of ketogenic diet: New perspectives for neuroprotection in alzheimer's disease
Authors:
Pinto, Alessandro; Bonucci, Alessio; Maggi, Elisa; Corsi, Mariangela; Businaro, Rita
Abstract:
The ketogenic diet, originally developed for the treatment of epilepsy in non-responder children, is spreading to be used in the treatment of many diseases, including Alzheimer’s disease. The main activity of the ketogenic diet has been related to improved mitochondrial function and decreased oxidative stress. B-Hydroxybutyrate, the most studied ketone body, has been shown to reduce the production of reactive oxygen species (ROS), improving mitochondrial respiration: it stimulates the cellular endogenous antioxidant system with the activation of nuclear factor erythroid-derived 2-related factor 2 (Nrf2), it modulates the ratio between the oxidized and reduced forms of nicotinamide adenine dinucleotide (NAD+/NADH) and it increases the efficiency of electron transport chain through the expression of uncoupling proteins. Furthermore, the ketogenic diet performs anti-inflammatory activity by inhibiting nuclear factor kappa-light-chain-enhancer of activated B cells (NF-kB) activation and nucleotide-binding domain, leucine-rich-containing family, pyrin domain-containing-3 (NLRP3) inflammasome as well as inhibiting histone deacetylases (HDACs), improving memory encoding. The underlying mechanisms and the perspectives for the treatment of Alzheimer’s disease are discussed.
Published:
2018
Title:
Are carnivore digestive separation mechanisms revealed on structure-rich diets?: Faecal inconsistency in dogs (Canis familiaris) fed day old chicks
Authors:
De Cuyper, Annelies; Clauss, Marcus; Hesta, Myriam; Cools, An; Bosch, Guido; Hendriks, Wouter H.; Janssens, Geert P. J.
Abstract:
Pronounced variations in faecal consistency have been described anecdotally for some carnivore species fed a structure-rich diet. Typically two faecal consistencies are distinguished, namely hard and firm versus liquid and viscous faeces. It is possible that a separation mechanism is operating in the carnivore digestive tract, as in many herbivore species. Six beagle dogs were fed two experimental diets in a cross-over design of 7 days. Test diets consisted of chunked day old chicks differing only in particle size (fine = 7.8 mm vs coarse = 13 mm) in order to vary dietary structure. Digestive retention time was measured using titanium oxide (TiO2) as marker. The total faecal output was scored for consistency and faecal fermentation profiles were evaluated through faecal short-chain fatty acid (SCFA) and ammonia (NH3) analyses. A total of 181 faecal samples were collected. Dietary particle size did not affect faecal consistency, fermentative end products nor mean retention time (MRT). However, a faecal consistency dichotomy was observed with firm faeces (score 2-2.5) and soft faeces (score 4-4.5) being the most frequently occurring consistencies in an almost alternating pattern in every single dog. Firm and soft faeces differed distinctively in fermentative profiles. Although the structure difference between diets did not affect the faecal dichotomy, feeding whole prey provoked the occurrence of the latter which raises suspicion of a digestive separation mechanism in the canine digestive tract. Further faecal characterisation is however required in order to unravel the underlying mechanism.
Published:
2018
Title:
Are whole-exome and whole-genome sequencing approaches cost-effective? A systematic review of the literature
Authors:
Schwarze, Katharina; Buchanan, James; Taylor, Jenny C.; Wordsworth, Sarah
Abstract:
Published:
2018
Title:
Association of Habitually Low Intake of Dietary Calcium with Blood Pressure and Hypertension in a Population with Predominantly Plant-Based Diets
Authors:
Liu, Ziqi; Fang, Aiping; He, Jingjing; Shen, Xin; Gao, Rong; Zhao, Xintian; Li, Keji
Abstract:
This study aimed to assess the association of habitually low dietary calcium intake with blood pressure or hypertensive risk using data from the China Health and Nutrition Survey (CHNS) in 2009. We included 6298 participants (2890 men and 3408 women) aged 18 years or older in this analysis. Food intakes were measured by 3-day 24-h individual recalls combined with a weighing and measuring of household food inventory. The participants were divided into normotensive, pre-hypertensive and hypertensive groups according to their mean blood pressure of three repeated measurements. Six intake levels were decided by percentiles of gender-specific dietary calcium intakes (P0⁻10, P10⁻30, P30⁻50, P50⁻70, P70⁻90, and P90⁻100). Average dietary calcium intakes were 405 mg/day for men and 370 mg/day for women, 80% and 84% of which were derived from plant-based food in men and women, respectively. Multiple linear regression analyses showed that dietary calcium intakes were not related with blood pressure in both genders (all P > 0.05). Logistic regression analyses showed a lower risk of pre-hypertension with higher dietary calcium intakes in women (all Pfor trend 0.05). This study suggests that there are no conclusive associations of habitually low dietary calcium intake with blood pressure or hypertensive risk in Chinese individuals consuming predominantly plant-based diets.
Published:
2018
Title:
Association of Habitually Low Intake of Dietary Calcium with Blood Pressure and Hypertension in a Population with Predominantly Plant-Based Diets
Authors:
Liu, Ziqi; Fang, Aiping; He, Jingjing; Shen, Xin; Gao, Rong; Zhao, Xintian; Li, Keji
Abstract:
This study aimed to assess the association of habitually low dietary calcium intake with blood pressure or hypertensive risk using data from the China Health and Nutrition Survey (CHNS) in 2009. We included 6298 participants (2890 men and 3408 women) aged 18 years or older in this analysis. Food intakes were measured by 3-day 24-h individual recalls combined with a weighing and measuring of household food inventory. The participants were divided into normotensive, pre-hypertensive and hypertensive groups according to their mean blood pressure of three repeated measurements. Six intake levels were decided by percentiles of gender-specific dietary calcium intakes (P0⁻10, P10⁻30, P30⁻50, P50⁻70, P70⁻90, and P90⁻100). Average dietary calcium intakes were 405 mg/day for men and 370 mg/day for women, 80% and 84% of which were derived from plant-based food in men and women, respectively. Multiple linear regression analyses showed that dietary calcium intakes were not related with blood pressure in both genders (all P > 0.05). Logistic regression analyses showed a lower risk of pre-hypertension with higher dietary calcium intakes in women (all Pfor trend 0.05). This study suggests that there are no conclusive associations of habitually low dietary calcium intake with blood pressure or hypertensive risk in Chinese individuals consuming predominantly plant-based diets.
Published:
2018
Title:
Association of dietary patterns with components of metabolic syndrome and inflammation among middle-aged and older adults with metabolic syndrome in Taiwan
Authors:
Syauqy, A.; Hsu, C.-Y.; Rau, H.-H.; Chao, J.C.-J.
Abstract:
This study examined the correlation of dietary patterns with components of metabolic syndrome (MetS) and inflammation among middle-aged and older adults with MetS in Taiwan. This cross-sectional study used data from the Mei Jau International Health Management Institution in Taiwan between 2004 and 2013. A total of 26,016 subjects aged 35 years and above were selected for analysis. MetS was defined according to the International Diabetes Federation. Three dietary patterns were identified by principal component analysis. High intake of a meat–instant food dietary pattern (rich in animal protein, saturated fat, sweets, sodium, and food additives) was positively associated with components of MetS and C-reactive protein (CRP), while high intake of a vege–seafood dietary pattern (rich in dietary fiber, vitamins, minerals, and unsaturated fat) or a cereal–dairy dietary pattern (rich in dietary fiber, antioxidants, phytochemicals, complex carbohydrate, prebiotics, and probiotics) was inversely associated with components of MetS and CRP. Our findings suggested that intake of a vege–seafood dietary pattern or a cereal–dairy dietary pattern decreased the risk of developing MetS and inflammation among middle-aged and older adults with MetS. © 2018 by the authors. Licensee MDPI, Basel, Switzerland.
Published:
2018
Title:
Association of serum triglycerides with arterial stiffness in subjects with low levels of low-density lipoprotein cholesterol
Authors:
Kawasoe, Shin; Ide, Kazuki; Usui, Tomoko; Kubozono, Takuro; Yoshifuku, Shiro; Miyahara, Hironori; Maenohara, Shigeho; Ohishi, Mitsuru; Kawakami, Koji
Abstract:
BACKGROUND The independent role of serum triglyceride (TG) levels as a cardiovascular risk factor is still not elucidated. We aimed to investigate if the effect of TG on arterial stiffness is influenced by the serum level of low-density lipoprotein cholesterol (LDL-C). Methods and Results: We studied 11,640 subjects who underwent health checkups. They were stratified into 4 groups according to LDL-C level (≤79, 80-119, 120-159, and ≥160 mg/dL). Arterial stiffness was evaluated by brachial-ankle pulse wave velocity (baPWV). In each group, univariate and multivariete logistic regression analyses were performed to investigate the association between high TG (≥150 mg/dL) and high baPWV (\textgreater1,400 cm/s). In the univarite analysis, high TG was significantly associated with high baPWV in LDL-C \textless79 mg/dL (OR, 3.611, 95% CI, 2.475-5.337; P\textless0.0001) and 80-119 mg/dL (OR, 1.881; 95% CI, 1.602-2.210; P\textless0.0001), but not in LDL-C 120-159 mg/dL and ≥160 mg/dL. In the multivariate analysis, high TG was significantly associated with high baPWV in LDL-C ≤79 mg/dL (OR, 2.558; 95% CI, 1.348-4.914; P=0.0040) and LDL-C 80-119 mg/dL (OR, 1.677; 95% CI, 1.315-2.140; P\textless0.0001), but not in LDL-C 120-159 mg/dL and ≥160 mg/dL. CONCLUSIONS High TG and increased arterial stiffness showed an independent relationship in a Japanese general population with LDL-C ≤119 mg/dL. TG-lowering therapy might be an additional therapeutic consideration in these subjects.
Published:
2018
Title:
Associations between immigrant status and pharmacological treatments for diabetes in U.S. adults
Authors:
Hsueh, Loretta; Vrany, Elizabeth A.; Patel, Jay S.; Hollingshead, Nicole A.; Hirsh, Adam T.; de Groot, Mary; Stewart, Jesse C.
Abstract:
OBJECTIVES: Although treatment disparities in diabetes have been documented along racial/ethnic lines, it is unclear if immigrant groups in the United States experience similar treatment disparities. Our objective was to determine whether immigrant status is associated with differences in pharmacological treatment of diabetes in a nationally representative sample of adults with diabetes. We were specifically interested in differences in treatment with oral hypoglycemic agents (OHA) and insulin. METHOD: Respondents were 2,260 adults from National Health and Nutritional Examination Survey (NHANES) 2003-2012 with a self-reported diabetes diagnosis. Immigrant status was indicated by birth within (U.S.-born) or outside (foreign-born) the 50 U.S. States or Washington, DC. Multinomial logistic regression analyses examined associations between immigrant status and (a) treatment with OHAs only and (b) treatment with insulin only or insulin and OHA combination therapy, using no treatment as the reference group. RESULTS: Adjusting for demographics, diabetes severity and duration, cardiovascular disease (CVD), and CVD risk factors, being foreign-born versus U.S.-born was not associated with treatment with OHAs only (odds ratio [OR] = 1.59; 95% confidence interval [CI] [0.97, 2.60]). However, being foreign-born was associated with decreased odds (OR = 0.53; 95% CI [0.28, 0.99]) of treatment with insulin. CONCLUSIONS: Pharmacological treatment of diabetes differs along immigrant status lines. To understand these findings, studies capturing the processes underlying treatment differences in diabetes among immigrants are needed. Findings raise the possibility that integrating information about a patient's immigrant status, in addition to racial/ethnic identity, may be an important component of culturally sensitive diabetes care. (PsycINFO Database Record
Published:
2018
Title:
Associations of Anthropometric Characteristics, Dietary Habits, and Aerobic Capacity With Cardiovascular Risk Factors of Health-Science Students
Authors:
Zarrazquin Arizaga, I.; Atucha, A.F.; Kortajarena, M.; Torres-Unda, J.; Irazusta, A.; Ruiz-Litago, F.; Irazusta, J.; Casis, L.; Fraile-Bermúdez, A.B.
Abstract:
The aim of this cross-sectional study was to study the relative importance of dietary habits and aerobic capacity in parameters related to cardiovascular risk in 271 female and 95 male health-science students (mean age = 19.1 ± 1.4 years). In females, fatty-meat consumption predicted triglycerides (β =.649, p <.001) and high-density lipoprotein (HDL; β = −.242, p =.001) and low-density lipoprotein (LDL; β =.373, p <.001) cholesterol levels. Consumption of nuts, legumes, and complex carbohydrates predicted triglyceride (β = −.099, p =.074), HDL (β =.231, p =.001), and LDL (β = −.155, p =.025) levels, respectively. Aerobic capacity (β = −.245, p <.001) and fatty-meat intake (β =.230, p <.001) predicted diastolic blood pressure (BP); body mass index (BMI) predicted systolic BP (β =.340, p
Published:
2018
Title:
Attention Deficit Hyperactivity Disorder: Diagnosis and Treatment in Children and Adolescents
Authors:
Kemper, Alex R.; Maslow, Gary R.; Hill, Sherika; Namdari, Behrouz; Allen LaPointe, Nancy M.; Goode, Adam P.; Coeytaux, Remy R.; Befus, Deanna; Kosinski, Andrzej S.; Bowen, Samantha E.; McBroom, Amanda J.; Lallinger, Kathryn R.; Sanders, Gillian D.
Abstract:
Attention deficit hyperactivity disorder (ADHD) is a common pediatric neurobehavioral disorder often treated in the primary care setting. This systematic review updates and extends two previous Agency for Healthcare Research and Quality (AHRQ) systematic evidence reviews and focuses on the comparative effectiveness of methods to establish the diagnosis of ADHD, updates the comparative effectiveness of pharmacologic and nonpharmacologic treatments, and evaluates different monitoring strategies in the primary care setting for individuals from birth through 17 years of age., We searched PubMed®, Embase®, PsycINFO®, and the Cochrane Database of Systematic Reviews for relevant English-language studies published from January 1, 2011, through November 7, 2016., Two investigators screened each abstract and full-text article for inclusion, abstracted the data, and performed quality ratings and evidence grading. Random-effects models were used to compute summary estimates of effects when sufficient data were available for meta-analysis., Evidence was contributed from 103 articles describing 90 unique studies. Twenty-one studies related to diagnosis, 69 studies related to treatment, and no studies were identified on monitoring. The Attention and Executive Function Rating Inventory and Childhood Executive Functioning Inventory performed better than the Cambridge Neuropsychological Test Automated Battery for the diagnosis of ADHD for ages 7–17 years (strength of evidence [SOE]=low). Evidence was insufficient on the use of electroencephalography (EEG) or neuroimaging to establish the diagnosis of ADHD for ages 7–17 years. No studies directly assessed the harms to children labeled as having ADHD. Limited additional evidence published since the original 2011 report was available on ADHD medications approved by the Food and Drug Administration (FDA) compared with placebo or compared to different FDA-approved ADHD medications (SOE=insufficient). For atomoxetine and methylphenidate, the most commonly reported adverse events were somnolence and mild gastrointestinal problems. Atomoxetine had slightly higher gastrointestinal effects than methylphenidate (SOE=low). Cognitive behavioral therapy improved ADHD symptoms (SOE=low). Child or parent training improved ADHD symptoms (SOE=moderate) but made no difference in academic performance (SOE=low). Omega-3/6 fatty acid supplementation made no difference in ADHD symptoms (SOE=moderate). Across all treatments, little evidence was reported on the risk of serious adverse events, including cardiovascular risk., The 2011 AHRQ systematic review highlighted the benefit of psychostimulants for children 6–12 years of age with ADHD for up to 24 months and found that adding psychosocial/behavioral interventions to psychostimulants is more effective than psychosocial/behavioral interventions alone for children with ADHD and oppositional defiant disorder. This targeted update found insufficient evidence regarding new approaches to the diagnosis (e.g., EEGs, neuroimaging). Little is known about the impact of being labeled as having ADHD. Although cognitive behavioral therapy or child or parent training may decrease symptoms of ADHD, more information is needed regarding the relative benefit of these approaches compared to, or combined with, medication treatment. Omega-3/6 supplementation does not appear to improve ADHD outcomes. No information was identified regarding the optimal strategy for monitoring after diagnosis.
Published:
2018
Title:
Author Correction: Effectiveness and Safety of a Novel Care Model for the Management of Type 2 Diabetes at 1 Year: An Open-Label, Non-Randomized, Controlled Study
Authors:
Hallberg, Sarah J.; McKenzie, Amy L.; Williams, Paul T.; Bhanpuri, Nasir H.; Peters, Anne L.; Campbell, Wayne W.; Hazbun, Tamara L.; Volk, Brittanie M.; McCarter, James P.; Phinney, Stephen D.; Volek, Jeff S.
Abstract:
The original version of this article unfortunately contained a mistake.
Published:
2018
Title:
Authors' Reply: Comment on "An Online Intervention Comparing a Very Low-Carbohydrate Ketogenic Diet and Lifestyle Recommendations Versus a Plate Method Diet in Overweight Individuals With Type 2 Diabetes: A Randomized Controlled Trial"
Authors:
Saslow, Laura; Mason, Ashley E.; Kim, Sarah; Goldman, Veronica; Ploutz-Snyder, Robert; Bayandorian, Hovig; Daubenmier, Jennifer; Hecht, Frederick M.; Moskowitz, Judith T.
Abstract:
Published:
2018
Title:
Biomarkers of Nutrition for Development (BOND)-Iron review
Authors:
Lynch, S.; Pfeiffer, C.M.; Georgieff, M.K.; Brittenham, G.; Fairweather-Tait, S.; Hurrell, R.F.; McArdle, H.J.; Raiten, D.J.
Abstract:
This is the fifth in the series of reviews developed as part of the Biomarkers of Nutrition for Development (BOND) program. The BOND Iron Expert Panel (I-EP) reviewed the extant knowledge regarding iron biology, public health implications, and the relative usefulness of currently available biomarkers of iron status from deficiency to overload. Approaches to assessing intake, including bioavailability, are also covered. The report also covers technical and laboratory considerations for the use of available biomarkers of iron status, and concludes with a description of research priorities along with a brief discussion of new biomarkers with potential for use across the spectrum of activities related to the study of iron in human health. The I-EP concluded that current iron biomarkers are reliable for accurately assessing many aspects of iron nutrition. However, a clear distinction is made between the relative strengths of biomarkers to assess hematological consequences of iron deficiency versus other putative functional outcomes, particularly the relationship between maternal and fetal iron status during pregnancy, birth outcomes, and infant cognitive, motor and emotional development. The I-EP also highlighted the importance of considering the confounding effects of inflammation and infection on the interpretation of iron biomarker results, as well as the impact of life stage. Finally, alternative approaches to the evaluation of the risk for nutritional iron overload at the population level are presented, because the currently designated upper limits for the biomarker generally employed (serum ferritin) may not differentiate between true iron overload and the effects of subclinical inflammation. © 2018 American Society for Nutrition.
Published:
2018
Title:
Biomarkers of food intake for Allium vegetables
Authors:
Praticò, Giulia; Gao, Qian; Manach, Claudine; Dragsted, Lars O.
Abstract:
Allium vegetables are widely consumed around the world and are known for their potential bioactive components improving human health. These effects have been extensively investigated; however, the results were inconsistent in human studies. Biomarkers of food intake (BFIs) could provide objective measurements of food intake in observational studies and assess compliance in intervention studies. Therefore, the discovery and application of BFIs for Allium vegetables would facilitate the exploring and understanding of the health benefit of Allium vegetables. In this manuscript, we reviewed the currently used and potential candidate BFIs for Allium vegetables and evaluated their levels of validation. S-Allylmercapturic acid (ALMA), allyl methyl sulfide (AMS), allyl methyl sulfoxide (AMSO), allyl methyl sulfone (AMSO2), and S-allylcysteine (SAC), which are derived from organosulfur compounds, were shown to be promising candidate BFIs for garlic consumption. Further validation is needed to assess their robustness and concordance with other measures. Their applicability for the whole food group should be evaluated as well. N-Acetyl-S-(2-carboxypropyl)cysteine (CPMA) was detected in high levels in urine after both garlic and onion intake, suggesting that it may be used for the assessment of intake of Allium food group. The available information regarding its kinetics, robustness, and analytical performance is limited and needs to be assessed in further studies. No candidate BFIs specific to intake of onion, leek, chives, shallots, or ramsons were found. Untargeted metabolomics studies and further validation studies should be performed to discover more reliable BFIs for individual Allium vegetables and the whole food group. This paper serves as an example of Biomarker of Food Intake Reviews (BFIRev) and biomarker of food intake validation procedures.
Published:
2018
Title:
Bone turnover, calcium homeostasis, and vitamin D status in Danish vegans
Authors:
Hansen, Tue H.; Madsen, Marie T. B.; Jørgensen, Niklas R.; Cohen, Arieh S.; Hansen, Torben; Vestergaard, Henrik; Pedersen, Oluf; Allin, Kristine H.
Abstract:
BACKGROUND/OBJECTIVES: A vegan diet has been associated with increased bone fracture risk, but the physiology linking nutritional exposure to bone metabolism has only been partially elucidated. This study investigated whether a vegan diet is associated with increased bone turnover and altered calcium homeostasis due to insufficient intake of calcium and vitamin D. SUBJECTS/METHODS: Fractionated and total 25-hydroxyvitamin D (25(OH)-D), parathyroid hormone (PTH), calcium, and four bone turnover markers (osteocalcin, N-terminal propeptide of type I procollagen (PINP), bone-specific alkaline phosphatase (BAP), and C-terminal telopeptide of type I collagen (CTX)) were measured in serum from 78 vegans and 77 omnivores. RESULTS: When adjusting for seasonality and constitutional covariates (age, sex, and body fat percentage) vegans had higher concentrations of PINP (32 [95% CI: 7, 64]%, P = 0.01) and BAP (58 [95% CI: 27, 97]%, P < 0.001) compared to omnivores, whereas CTX (30 [95% CI: -1, 72]%, P = 0.06) and osteocalcin (21.8 [95% CI: -9.3, 63.7]%, P = 0.2) concentrations did not differ between the two groups. Vegans had higher serum PTH concentration (38 [95% CI: 19, 60]%; P < 0.001) and lower 25(OH)-D serum concentration (-33 [95% CI: -45, -19]%; P
Published:
2018
Title:
Brassicales phylogeny inferred from 72 plastid genes: A reanalysis of the phylogenetic localization of two paleopolyploid events and origin of novel chemical defenses
Authors:
Edger, Patrick P.; Hall, Jocelyn C.; Harkess, Alex; Tang, Michelle; Coombs, Jill; Mohammadin, Setareh; Schranz, M. Eric; Xiong, Zhiyong; Leebens-Mack, James; Meyers, Blake C.; Sytsma, Kenneth J.; Koch, Marcus A.; Al-Shehbaz, Ihsan A.; Pires, J. Chris
Abstract:
PREMISE OF THE STUDY: Previous phylogenetic studies employing molecular markers have yielded various insights into the evolutionary history across Brassicales, but many relationships between families remain poorly supported or unresolved. A recent phylotranscriptomic approach utilizing 1155 nuclear markers obtained robust estimates for relationships among 14 of 17 families. Here we report a complete family-level phylogeny estimated using the plastid genome. METHODS: We conducted phylogenetic analyses on a concatenated data set comprising 44,926 bp from 72 plastid genes for species distributed across all 17 families. Our analysis includes three additional families, Tovariaceae, Salvadoraceae, and Setchellanthaceae, that were omitted in the previous phylotranscriptomic study. KEY RESULTS: Our phylogenetic analyses obtained fully resolved and strongly supported estimates for all nodes across Brassicales. Importantly, these findings are congruent with the topology reported in the phylotranscriptomic study. This consistency suggests that future studies could utilize plastid genomes as markers for resolving relationships within some notoriously difficult clades across Brassicales. We used this new phylogenetic framework to verify the placement of the At-α event near the origin of Brassicaceae, with median date estimates of 31.8 to 42.8 million years ago and restrict the At-β event to one of two nodes with median date estimates between 85 to 92.2 million years ago. These events ultimately gave rise to novel chemical defenses and are associated with subsequent shifts in net diversification rates. CONCLUSIONS: We anticipate that these findings will aid future comparative evolutionary studies across Brassicales, including selecting candidates for whole-genome sequencing projects.
Published:
2018
Title:
Breathomics for Assessing the Effects of Treatment and Withdrawal With Inhaled Beclomethasone/Formoterol in Patients With COPD
Authors:
Montuschi, Paolo; Santini, Giuseppe; Mores, Nadia; Vignoli, Alessia; Macagno, Francesco; Shoreh, Rugia; Tenori, Leonardo; Zini, Gina; Fuso, Leonello; Mondino, Chiara; Di Natale, Corrado; D'Amico, Arnaldo; Luchinat, Claudio; Barnes, Peter J.; Higenbottam, Tim
Abstract:
Background: Prospective pharmacological studies on breathomics profiles in COPD patients have not been previously reported. We assessed the effects of treatment and withdrawal of an extrafine inhaled corticosteroid (ICS)-long-acting β2-agonist (LABA) fixed dose combination (FDC) using a multidimensional classification model including breathomics. Methods: A pilot, proof-of-concept, pharmacological study was undertaken in 14 COPD patients on maintenance treatment with inhaled fluticasone propionate/salmeterol (500/50 μg b.i.d.) for at least 8 weeks (visit 1). Patients received 2-week treatment with inhaled beclomethasone dipropionate/formoterol (100/6 μg b.i.d.) (visit 2), 4-week treatment with formoterol alone (6 μg b.i.d.) (visit 3), and 4-week treatment with beclomethasone/formoterol (100/6 μg b.i.d.) (visit 4). Exhaled breath analysis with two e-noses, based on different technologies, and exhaled breath condensate (EBC) NMR-based metabolomics were performed. Sputum cell counts, sputum supernatant and EBC prostaglandin E2 (PGE2) and 15-F2t-isoprostane, fraction of exhaled nitric oxide, and spirometry were measured. Results: Compared with formoterol alone, EBC acetate and sputum PGE2, reflecting airway inflammation, were reduced after 4-week beclomethasone/formoterol. Three independent breathomics techniques showed that extrafine beclomethasone/formoterol short-term treatment was associated with different breathprints compared with regular fluticasone propionate/salmeterol. Either ICS/LABA FDC vs. formoterol alone was associated with increased pre-bronchodilator FEF25-75% and FEV1/FVC (P = 0.008-0.029). The multidimensional model distinguished fluticasone propionate/salmeterol vs. beclomethasone/formoterol, fluticasone propionate/salmeterol vs. formoterol, and formoterol vs. beclomethasone/formoterol (accuracy > 70%, P
Published:
2018
Title:
Bronze Age population dynamics and the rise of dairy pastoralism on the eastern Eurasian steppe
Authors:
Jeong, Choongwon; Wilkin, Shevan; Amgalantugs, Tsend; Bouwman, Abigail S.; Taylor, William Timothy Treal; Hagan, Richard W.; Bromage, Sabri; Tsolmon, Soninkhishig; Trachsel, Christian; Grossmann, Jonas; Littleton, Judith; Makarewicz, Cheryl A.; Krigbaum, John; Burri, Marta; Scott, Ashley; Davaasambuu, Ganmaa; Wright, Joshua; Irmer, Franziska; Myagmar, Erdene; Boivin, Nicole; Robbeets, Martine; Rühli, Frank J.; Krause, Johannes; Frohlich, Bruno; Hendy, Jessica; Warinner, Christina
Abstract:
Recent paleogenomic studies have shown that migrations of Western steppe herders (WSH) beginning in the Eneolithic (ca. 3300-2700 BCE) profoundly transformed the genes and cultures of Europe and central Asia. Compared with Europe, however, the eastern extent of this WSH expansion is not well defined. Here we present genomic and proteomic data from 22 directly dated Late Bronze Age burials putatively associated with early pastoralism in northern Mongolia (ca. 1380-975 BCE). Genome-wide analysis reveals that they are largely descended from a population represented by Early Bronze Age hunter-gatherers in the Baikal region, with only a limited contribution (∼7%) of WSH ancestry. At the same time, however, mass spectrometry analysis of dental calculus provides direct protein evidence of bovine, sheep, and goat milk consumption in seven of nine individuals. No individuals showed molecular evidence of lactase persistence, and only one individual exhibited evidence of >10% WSH ancestry, despite the presence of WSH populations in the nearby Altai-Sayan region for more than a millennium. Unlike the spread of Neolithic farming in Europe and the expansion of Bronze Age pastoralism on the Western steppe, our results indicate that ruminant dairy pastoralism was adopted on the Eastern steppe by local hunter-gatherers through a process of cultural transmission and minimal genetic exchange with outside groups.
Published:
2018
Title:
Carbotoxicity-Noxious Effects of Carbohydrates
Authors:
Kroemer, Guido; López-Otín, Carlos; Madeo, Frank; de Cabo, Rafael
Abstract:
Modern nutrition is often characterized by the excessive intake of different types of carbohydrates ranging from digestible polysaccharides to refined sugars that collectively mediate noxious effects on human health, a phenomenon that we refer to as "carbotoxicity." Epidemiological and experimental evidence combined with clinical intervention trials underscore the negative impact of excessive carbohydrate uptake, as well as the beneficial effects of reducing carbs in the diet. We discuss the molecular, cellular, and neuroendocrine mechanisms that link exaggerated carbohydrate intake to disease and accelerated aging as we outline dietary and pharmacologic strategies to combat carbotoxicity.
Published:
2018
Title:
Carbotoxicity—Noxious Effects of Carbohydrates
Authors:
Kroemer, Guido; López-Otín, Carlos; Madeo, Frank; de Cabo, Rafael
Abstract:
Modern nutrition is often characterized by the excessive intake of different types of carbohydrates ranging from digestible polysaccharides to refined sugars that collectively mediate noxious effects on human health, a phenomenon that we refer to as “carbotoxicity.” Epidemiological and experimental evidence combined with clinical intervention trials underscore the negative impact of excessive carbohydrate uptake, as well as the beneficial effects of reducing carbs in the diet. We discuss the molecular, cellular, and neuroendocrine mechanisms that link exaggerated carbohydrate intake to disease and accelerated aging as we outline dietary and pharmacologic strategies to combat carbotoxicity. The effects of excessive intake of carbohydrates in diets worldwide is discussed at a mechanistic and functional perspective.
Published:
2018
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