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Annual Review of Nutrition

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https://www.readbyqxmd.com/read/28715994/fgf23-and-nutritional-metabolism
#1
Lindsay R Pool, Myles Wolf
The discovery of fibroblast growth factor 23 (FGF23) has provided a more complete understanding of the regulation of phosphate and mineral homeostasis in health and in chronic kidney disease. It has also offered new insights into stratification of risk of cardiovascular events and death among patients with chronic kidney disease and the general population. In this review, we provide an overview of FGF23 biology and physiology, summarize clinical outcomes that have been associated with FGF23, discuss potential mechanisms for these observations and their public health implications, and explore clinical and population health interventions that aim to reduce FGF23 levels and improve public health...
July 17, 2017: Annual Review of Nutrition
https://www.readbyqxmd.com/read/28715993/metabolic-effects-of-intermittent-fasting
#2
Ruth E Patterson, Dorothy D Sears
The objective of this review is to provide an overview of intermittent fasting regimens, summarize the evidence on the health benefits of intermittent fasting, and discuss physiological mechanisms by which intermittent fasting might lead to improved health outcomes. A MEDLINE search was performed using PubMed and the terms "intermittent fasting," "fasting," "time-restricted feeding," and "food timing." Modified fasting regimens appear to promote weight loss and may improve metabolic health. Several lines of evidence also support the hypothesis that eating patterns that reduce or eliminate nighttime eating and prolong nightly fasting intervals may result in sustained improvements in human health...
July 17, 2017: Annual Review of Nutrition
https://www.readbyqxmd.com/read/28715992/the-hibernator-microbiome-host-bacterial-interactions-in-an-extreme-nutritional-symbiosis
#3
Hannah V Carey, Fariba M Assadi-Porter
Animals that undergo seasonal cycles of feeding and fasting have adaptations that maintain integrity of organ systems when dietary nutrients are lacking. Food deprivation also challenges the gut microbiota, which relies heavily on host diet for metabolic substrates and the gastrointestinal tract, which is influenced by enteral nutrients and microbial activity. Winter fasting in hibernators shifts the microbiota to favor taxa with the capacity to degrade and utilize host-derived substrates and disfavor taxa that prefer complex plant polysaccharides...
July 17, 2017: Annual Review of Nutrition
https://www.readbyqxmd.com/read/28715991/trimethylamine-n-oxide-the-microbiome-and-heart-and-kidney-disease
#4
Steven H Zeisel, Manya Warrier
Trimethylamine N-oxide (TMAO) is a biologically active molecule and is a putative promoter of chronic diseases including atherosclerosis in humans. Host intestinal bacteria produce its precursor trimethylamine (TMA) from carnitine, choline, or choline-containing compounds. Most of the TMA produced is passively absorbed into portal circulation, and hepatic flavin-dependent monooxygenases (FMOs) efficiently oxidize TMA to TMAO. Both observational and experimental studies suggest a strong positive correlation between increased plasma TMAO concentrations and adverse cardiovascular events, such as myocardial infarction, stroke, and death...
July 17, 2017: Annual Review of Nutrition
https://www.readbyqxmd.com/read/28715990/single-subject-studies-in-translational-nutrition-research
#5
Nicholas J Schork, Laura H Goetz
There is a great deal of interest in personalized, individualized, or precision interventions for disease and health-risk mitigation. This is as true of nutrition-based intervention and prevention strategies as it is for pharmacotherapies and pharmaceutical-oriented prevention strategies. Essentially, technological breakthroughs have enabled researchers to probe an individual's unique genetic, biochemical, physiological, behavioral, and exposure profile, allowing them to identify very specific and often nuanced factors that an individual might possess, which may make it more or less likely that he or she responds favorably to a particular intervention (e...
July 17, 2017: Annual Review of Nutrition
https://www.readbyqxmd.com/read/28645222/dietary-fat-and-risk-of-cardiovascular-disease-recent-controversies-and-advances
#6
Dong D Wang, Frank B Hu
Health effects of dietary fats have been extensively studied for decades. However, controversies exist on the effects of various types of fatty acids, especially saturated fatty acid (SFA), on cardiovascular disease (CVD). Current evidence supports that different types of dietary fatty acids have divergent effects on CVD risk, and the effects also depend strongly on the comparison or replacement macronutrient. A significant reduction in CVD risk can be achieved if SFAs are replaced by unsaturated fats, especially polyunsaturated fatty acids...
June 23, 2017: Annual Review of Nutrition
https://www.readbyqxmd.com/read/28637384/long-term-effects-of-high-protein-diets-on-renal-function
#7
Anne-Lise Kamper, Svend Strandgaard
Chronic kidney disease (CKD) has a prevalence of approximately 13% and is most frequently caused by diabetes and hypertension. In population studies, CKD etiology is often uncertain. Some experimental and observational human studies have suggested that high-protein intake may increase CKD progression and even cause CKD in healthy people. The protein source may be important. Daily red meat consumption over years may increase CKD risk, whereas white meat and dairy proteins appear to have no such effect, and fruit and vegetable proteins may be renal protective...
June 21, 2017: Annual Review of Nutrition
https://www.readbyqxmd.com/read/28628361/lipocalin-2-an-emerging-player-in-iron-homeostasis-and-inflammation
#8
Xia Xiao, Beng San Yeoh, Matam Vijay-Kumar
Lipocalin 2 (Lcn2), an innate immune protein, has emerged as a critical iron regulatory protein during physiological and inflammatory conditions. As a bacteriostatic factor, Lcn2 obstructs the siderophore iron-acquiring strategy of bacteria and thus inhibits bacterial growth. As part of host nutritional immunity, Lcn2 facilitates systemic, cellular, and mucosal hypoferremia during inflammation, in addition to stabilizing the siderophore-bound labile iron pool. In this review, we summarize recent advances in understanding the interaction between Lcn2 and iron, and its effects in various inflammatory diseases...
June 19, 2017: Annual Review of Nutrition
https://www.readbyqxmd.com/read/28628360/genetic-risk-factors-for-folate-responsive-neural-tube-defects
#9
Anne M Molloy, Faith Pangilinan, Lawrence C Brody
Neural tube defects (NTDs) are the most severe congenital malformations of the central nervous system. The etiology is complex, with both genetic and environmental factors having important contributions. Researchers have known for the past two decades that maternal periconceptional use of the B vitamin folic acid can prevent many NTDs. Though this finding is arguably one of the most important recent discoveries in birth defect research, the mechanism by which folic acid exerts this benefit remains unknown. Research to date has focused on the hypothesis that an underlying genetic susceptibility interacts with folate-sensitive metabolic processes at the time of neural tube closure...
June 19, 2017: Annual Review of Nutrition
https://www.readbyqxmd.com/read/28628359/the-genetic-basis-for-sex-differences-in-obesity-and-lipid-metabolism
#10
Jenny C Link, Karen Reue
Men and women exhibit significant differences in obesity, cardiovascular disease, and diabetes. To provide better diagnosis and treatment for both sexes, it is important to identify factors that underlie the observed sex differences. Traditionally, sex differences have been attributed to the differential effects of male and female gonadal secretions (commonly referred to as sex hormones), which substantially influence many aspects of metabolism and related diseases. Less appreciated as a contributor to sex differences are the fundamental genetic differences between males and females, which are ultimately determined by the presence of an XX or XY sex chromosome complement...
June 19, 2017: Annual Review of Nutrition
https://www.readbyqxmd.com/read/28613982/dietary-phosphorus-intake-and-the-kidney
#11
Alex R Chang, Cheryl Anderson
Although phosphorus is an essential nutrient required for multiple physiological functions, recent research raises concerns that high phosphorus intake could have detrimental effects on health. Phosphorus is abundant in the food supply of developed countries, occurring naturally in protein-rich foods and as an additive in processed foods. High phosphorus intake can cause vascular and renal calcification, renal tubular injury, and premature death in multiple animal models. Small studies in human suggest that high phosphorus intake may result in positive phosphorus balance and correlate with renal calcification and albuminuria...
June 14, 2017: Annual Review of Nutrition
https://www.readbyqxmd.com/read/28574804/the-best-of-times
#12
Johanna T Dwyer
I came of age as a nutrition scientist during the best of times-years that spanned a rapidly changing world of food and nutrition science, politics, and policy that greatly broadened the specialty and its influence on public affairs. I followed the conventional route in academe, working my way up the academic ladder in Boston from a base first in a school of public health and later in a teaching hospital and medical school, interspersed with stints in Washington, DC. Thus I tell a tale of two cities. Those were the best of times because nutrition science and policy converged and led to important policies and programs that shaped the field for the next 50 years...
June 2, 2017: Annual Review of Nutrition
https://www.readbyqxmd.com/read/28564556/brain-on-fire-incentive-salience-hedonic-hot-spots-dopamine-obesity-and-other-hunger-games
#13
Jameason D Cameron, Jean-Philippe Chaput, Anders M Sjödin, Gary S Goldfield
This review examines human feeding behavior in light of psychological motivational theory and highlights the importance of midbrain dopamine (DA). Prospective evidence of both reward surfeit and reward deficit pathways to increased body weight are evaluated, and we argue that it is more complex than an either/or scenario when examining DA's role in reward sensitivity, eating, and obesity. The Taq1A genotype is a common thread that ties the contrasting models of DA reward and obesity; this genotype related to striatal DA is not associated with obesity class per se but may nevertheless confer an increased risk of weight gain...
May 31, 2017: Annual Review of Nutrition
https://www.readbyqxmd.com/read/28564555/holocarboxylase-synthetase-a-moonlighting-transcriptional-coregulator-of-gene-expression-and-a-cytosolic-regulator-of-biotin-utilization
#14
Alfonso León-Del-Río, Viviana Valadez-Graham, Roy A Gravel
The vitamin biotin is an essential nutrient for the metabolism and survival of all organisms owing to its function as a cofactor of enzymes collectively known as biotin-dependent carboxylases. These enzymes use covalently attached biotin as a vector to transfer a carboxyl group between donor and acceptor molecules during carboxylation reactions. In human cells, biotindependent carboxylases catalyze key reactions in gluconeogenesis, fatty acid synthesis, and amino acid catabolism. Biotin is attached to apocarboxylases by a biotin ligase: holocarboxylase synthetase (HCS) in mammalian cells and BirA in microbes...
May 31, 2017: Annual Review of Nutrition
https://www.readbyqxmd.com/read/28564554/the-nexus-between-nutrition-and-early-childhood-development
#15
Harold Alderman, Lia Fernald
This article looks at both nutrition and early child stimulation interventions as part of an integrated life cycle approach to development. We build on recent systematic reviews of child development, which are comprehensive in regard to what is currently known about outcomes reported in key studies. We then focus particularly on implementation, scaling, and economic returns, drawing mainly on experience in low- and middle-income countries where undernutrition and poor child development remain significant public health challenges with implications across the life course...
May 31, 2017: Annual Review of Nutrition
https://www.readbyqxmd.com/read/27431371/lutein-and-zeaxanthin-isomers-in-eye-health-and-disease
#16
REVIEW
Julie Mares
Current evidence suggests lutein and its isomers play important roles in ocular development in utero and throughout the life span, in vision performance in young and later adulthood, and in lowering risk for the development of common age-related eye diseases in older age. These xanthophyll (oxygen-containing) carotenoids are found in a wide variety of vegetables and fruits, and they are present in especially high concentrations in leafy green vegetables. Additionally, egg yolks and human milk appear to be bioavailable sources...
July 17, 2016: Annual Review of Nutrition
https://www.readbyqxmd.com/read/27431370/nutrient-gene-interaction-in-colon-cancer-from-the-membrane-to-cellular-physiology
#17
REVIEW
Tim Y Hou, Laurie A Davidson, Eunjoo Kim, Yang-Yi Fan, Natividad R Fuentes, Karen Triff, Robert S Chapkin
The International Agency for Research on Cancer recently released an assessment classifying red and processed meat as "carcinogenic to humans" on the basis of the positive association between increased consumption and risk for colorectal cancer. Diet, however, can also decrease the risk for colorectal cancer and be used as a chemopreventive strategy. Bioactive dietary molecules, such as n-3 polyunsaturated fatty acids, curcumin, and fermentable fiber, have been proposed to exert chemoprotective effects, and their molecular mechanisms have been the focus of research in the dietary/chemoprevention field...
July 17, 2016: Annual Review of Nutrition
https://www.readbyqxmd.com/read/27431369/the-perilipins-major-cytosolic-lipid-droplet-associated-proteins-and-their-roles-in-cellular-lipid-storage-mobilization-and-systemic-homeostasis
#18
REVIEW
Alan R Kimmel, Carole Sztalryd
The discovery by Dr. Constantine Londos of perilipin 1, the major scaffold protein at the surface of cytosolic lipid droplets in adipocytes, marked a fundamental conceptual change in the understanding of lipolytic regulation. Focus then shifted from the enzymatic activation of lipases to substrate accessibility, mediated by perilipin-dependent protein sequestration and recruitment. Consequently, the lipid droplet became recognized as a unique, metabolically active cellular organelle and its surface as the active site for novel protein-protein interactions...
July 17, 2016: Annual Review of Nutrition
https://www.readbyqxmd.com/read/27431368/formate-the-neglected-member-of-one-carbon-metabolism
#19
REVIEW
Margaret E Brosnan, John T Brosnan
Formate, the only non-tetrahydrofolate (THF)-linked intermediate in one-carbon metabolism, is produced in mammals from a variety of metabolic sources. It occurs in serum of adults at a concentration of approximately 30 μM. Its principal function lies as a source of one-carbon groups for the synthesis of 10-formyl-THF and other one-carbon intermediates; these are primarily used for purine synthesis, thymidylate synthesis, and the provision of methyl groups for synthetic, regulatory, and epigenetic methylation reactions...
July 17, 2016: Annual Review of Nutrition
https://www.readbyqxmd.com/read/27431367/homocysteine-b-vitamins-and-cognitive-impairment
#20
REVIEW
A David Smith, Helga Refsum
Moderately elevated plasma total homocysteine (tHcy) is a strong modifiable risk factor for vascular dementia and Alzheimer's disease. Prospectively, elevated tHcy is associated with cognitive decline, white matter damage, brain atrophy, neurofibrillary tangles, and dementia. Most homocysteine-lowering trials with folate and vitamins B6 and/or B12 tested as protective agents against cognitive decline were poorly designed by including subjects unlikely to benefit during the trial period. In contrast, trials in high-risk subjects, which have taken into account the baseline B vitamin status, show a slowing of cognitive decline and of atrophy in critical brain regions, results that are consistent with modification of the Alzheimer's disease process...
July 17, 2016: Annual Review of Nutrition
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