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https://www.readbyqxmd.com/read/28319109/the-broad-study-a-randomised-controlled-trial-using-a-whole-food-plant-based-diet-in-the-community-for-obesity-ischaemic-heart-disease-or-diabetes
#1
N Wright, L Wilson, M Smith, B Duncan, P McHugh
BACKGROUND/OBJECTIVE: There is little randomised evidence using a whole food plant-based (WFPB) diet as intervention for elevated body mass index (BMI) or dyslipidaemia. We investigated the effectiveness of a community-based dietary programme. Primary end points: BMI and cholesterol at 6 months (subsequently extended). SUBJECTS: Ages 35-70, from one general practice in Gisborne, New Zealand. Diagnosed with obesity or overweight and at least one of type 2 diabetes, ischaemic heart disease, hypertension or hypercholesterolaemia...
March 20, 2017: Nutrition & Diabetes
https://www.readbyqxmd.com/read/28296317/validation-of-total-skin-electron-irradiation-tsei-technique-dosimetry-data-by-monte-carlo-simulation
#2
Alexander Nevelsky, Egor Borzov, Shahar Daniel, Raquel Bar-Deroma
Total skin electron irradiation (TSEI) is a complex technique which requires many nonstandard measurements and dosimetric procedures. The purpose of this work was to validate measured dosimetry data by Monte Carlo (MC) simulations using EGSnrc-based codes (BEAMnrc and DOSXYZnrc). Our MC simulations consisted of two major steps. In the first step, the incident electron beam parameters (energy spectrum, FWHM, mean angular spread) were adjusted to match the measured data (PDD and profile) at SSD=100 cm for an open field...
July 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28289216/b-vitamins-attenuate-the-epigenetic-effects-of-ambient-fine-particles-in-a-pilot-human-intervention-trial
#3
Jia Zhong, Oskar Karlsson, Guan Wang, Jun Li, Yichen Guo, Xinyi Lin, Michele Zemplenyi, Marco Sanchez-Guerra, Letizia Trevisi, Bruce Urch, Mary Speck, Liming Liang, Brent A Coull, Petros Koutrakis, Frances Silverman, Diane R Gold, Tangchun Wu, Andrea A Baccarelli
Acute exposure to fine particle (PM2.5) induces DNA methylation changes implicated in inflammation and oxidative stress. We conducted a crossover trial to determine whether B-vitamin supplementation averts such changes. Ten healthy adults blindly received a 2-h, controlled-exposure experiment to sham under placebo, PM2.5 (250 μg/m(3)) under placebo, and PM2.5 (250 μg/m(3)) under B-vitamin supplementation (2.5 mg/d folic acid, 50 mg/d vitamin B6, and 1 mg/d vitamin B12), respectively. We profiled epigenome-wide methylation before and after each experiment using the Infinium HumanMethylation450 BeadChip in peripheral CD4(+) T-helper cells...
March 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28257040/a-potential-tool-for-clinicians-evaluating-a-computer-led-dietary-assessment-method-in-overweight-and-obese-women-during-weight-loss
#4
Adrianne M Widaman, Nancy L Keim, Dustin J Burnett, Beverly Miller, Megan G Witbracht, Keith F Widaman, Kevin D Laugero
Many Americans are attempting to lose weight with the help of healthcare professionals. Clinicians can improve weight loss results by using technology. Accurate dietary assessment is crucial to effective weight loss. The aim of this study was to validate a computer-led dietary assessment method in overweight/obese women. Known dietary intake was compared to Automated Self-Administered 24-h recall (ASA24) reported intake in women (n = 45), 19-50 years, with body mass index of 27-39.9 kg/m². Participants received nutrition education and reduced body weight by 4%-10%...
March 1, 2017: Nutrients
https://www.readbyqxmd.com/read/28237602/effects-of-intramuscular-injections-of-folic-acid-vitamin-b12-or-both-on-lactational-performance-and-energy-status-of-multiparous-dairy-cows
#5
M Duplessis, H Lapierre, D Pellerin, J-P Laforest, C L Girard
The purpose of this experiment was to gain understanding on changes in energy partitioning when folic acid and vitamin B12 supplements, alone or combined, were given by weekly intramuscular injections from 3 wk before the expected calving date until 7 wk postpartum. Twenty-four multiparous cows were assigned to 6 blocks of 4 cows each according to previous 305-d lactation yield to either 0 or 320 mg of folic acid and 0 or 10 mg of vitamin B12 in a 2 × 2 factorial arrangement. Plasma concentration of folates was increased by folic acid supplement, and this increase was greater with the combined supplement...
February 22, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28208812/relationship-between-self-reported-dietary-nutrient-intake-and-self-reported-sleep-duration-among-japanese-adults
#6
Yoko Komada, Hajime Narisawa, Fumitaka Ueda, Hitomi Saito, Hiroyuki Sakaguchi, Makoto Mitarai, Rina Suzuki, Norihisa Tamura, Shigeru Inoue, Yuichi Inoue
Several studies have reported that short sleep duration is a risk factor for obesity and metabolic disease. Moreover, both sleep duration and sleep timing might independently be associated with dietary nutrient intake. In this study, we investigated the associations between self-reported sleep duration and dietary nutrient intake, with and without adjustments for variations in sleep timing (i.e., the midpoint of sleep). We conducted a questionnaire survey, comprising a validated brief self-administered diet history questionnaire (BDHQ) and the Japanese version of the Pittsburgh Sleep Quality Index (PSQI) among 1902 healthy Japanese adults and found that the dietary intakes of several nutrients correlated with sleep duration among men regardless of adjustment for the midpoint of sleep...
February 13, 2017: Nutrients
https://www.readbyqxmd.com/read/28197890/relationships-among-diet-physical-activity-and-dual-plane-dual-energy-x-ray-absorptiometry-bone-outcomes-in-pre-pubertalgirls
#7
Jie Ren, Lynn S Brann, Kay S Bruening, Tamara A Scerpella, Jodi N Dowthwaite
In pre-pubertal girls, nutrient intakes and non-aquatic organized activity were evaluated as factors in vertebral body bone mass, structure, and strength. Activity, vitamin B12, and dietary fiber predicted bone outcomes most consistently. Exercise and vitamin B12 appear beneficial, whereas high fiber intake appears to be adverse for vertebral body development. PURPOSE: Childhood development sets the baseline for adult fracture risk. Most studies evaluate development using postero-anterior (PA) dual-energy X-ray absorptiometry (DXA) areal bone mineral density, bone mineral content, and bone mineral apparent density...
December 2017: Archives of Osteoporosis
https://www.readbyqxmd.com/read/28135083/polarized-xanes-monitors-femtosecond-structural-evolution-of-photoexcited-vitamin-b12
#8
Nicholas A Miller, Aniruddha Deb, Roberto Alonso-Mori, Brady D Garabato, James M Glownia, Laura M Kiefer, Jake Koralek, Marcin Sikorski, Kenneth G Spears, Theodore E Wiley, Diling Zhu, Pawel M Kozlowski, Kevin J Kubarych, James E Penner-Hahn, Roseanne J Sension
Ultrafast, polarization-selective time-resolved X-ray absorption near-edge structure (XANES) was used to characterize the photochemistry of vitamin B12, cyanocobalamin (CNCbl), in solution. Cobalamins are important biological cofactors involved in methyl transfer, radical rearrangement, and light-activated gene regulation, while also holding promise as light-activated agents for spatiotemporal controlled delivery of therapeutics. We introduce polarized femtosecond XANES, combined with UV-visible spectroscopy, to reveal sequential structural evolution of CNCbl in the excited electronic state...
January 30, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28096758/effects-of-acute-ingestion-of-a-pre-workout-dietary-supplement-with-and-without-p-synephrine-on-resting-energy-expenditure-cognitive-function-and-exercise-performance
#9
Y Peter Jung, Conrad P Earnest, Majid Koozehchian, Elfego Galvan, Ryan Dalton, Dillon Walker, Christopher Rasmussen, Peter S Murano, Mike Greenwood, Richard B Kreider
BACKGROUND: The purpose of this study was to examine the effects of acute ingestion of a pre-workout dietary supplement (PWS) with and without p-synephrine (S) on perceptions of readiness to perform, cognitive function, exercise performance, and markers of safety. METHODS: In a randomized, double-blind, and counterbalanced manner; 25 healthy and recreationally active male and female participants ingested a flavored maltodextrin placebo (PLA), a PWS containing beta-alanine (3 g), creatine nitrate as a salt (2 g), arginine alpha-ketoglutarate (2 g), N-Acetyl-L-Tyrosine (300 mg), caffeine (284 mg), Mucuna pruiriens extract standardized for 15% L-Dopa (15 mg), Vitamin C as Ascorbic Acid (500 mg), niacin (60 mg), folate as folic acid (50 mg), and Vitamin B12 as Methylcobalamin (70 mg) with 2 g of maltodextrin and flavoring; or, the PWS with Citrus aurantium (PWS + S) extract standardized for 30% p-synephrine (20 mg)...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28073813/association-between-the-healthy-eating-index-2010-and-nutrient-and-energy-densities-of-german-households-food-purchases
#10
Jonas Peltner, Silke Thiele
BACKGROUND: The USDA Healthy Eating Index (HEI) is used widely to measure diet quality because it allows a number of different applications. Although several evaluations of the HEI-2010 have already been carried out, there is lack of those which focus on associations between the HEI and nutrient intakes. This study updates and expands upon previous findings on these associations. METHODS: Using German consumption data, where ∼12 million purchases from 13 131 households are recorded, HEI-2010 total and individual scores, as well as several energy and nutrient densities were calculated...
January 9, 2017: European Journal of Public Health
https://www.readbyqxmd.com/read/28057118/-the-nutrition-status-of-lactating-women-in-china
#11
C X Dong, S A Yin
Nutritional status of lactating women is considered to be a quantitative indicator reflecting the status of reproductive health. To improve nutrition status of lactating women and promote breastfeeding through targeted intervention measures, their dietary and nutritional situations, and related problems, should be fully understood. Generally, energy and macronutrient intake of lactating women can reach or exceed recommended levels, especially during the first month postpartum. However, the intake of some micronutrients is difficult to meet the requirement...
December 6, 2016: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/27951660/conformational-dynamics-and-protein-substrate-interaction-of-abc-transporter-btucd-at-the-occluded-state-revealed-by-molecular-dynamics-simulations
#12
Chao Pan, Jingwei Weng, Wenning Wang
ATP-binding cassette (ABC) transporters are ubiquitous in all three kingdoms of life and are implicated in many clinically relevant physiological processes. They couple the energy released by ATP hydrolysis to facilitate substrate translocation across cell membranes. The crystal structures of type II ABC importers have revealed their unique transmembrane domain architecture consisting of 10 transmembrane helices and their structurally conserved nucleotide-binding domains among all ABC transporters. However, molecular details of the interactions between the importers and their substrate remain largely elusive...
December 13, 2016: Biochemistry
https://www.readbyqxmd.com/read/27941357/nutrient-deficiencies-prior-to-bariatric-surgery
#13
Lori R Roust, John K DiBaise
PURPOSE OF REVIEW: The purpose of this review is to provide an update of recent additions to our understanding of the prevalence of nutrient deficiencies and the potential role of preoperative weight loss in contributing to these deficiencies in obese individuals planning to undergo bariatric surgery. RECENT FINDINGS: Recent reports that have included bariatric surgery candidates from sites around the world have shown consistent deficiencies in a variety of nutrients...
March 2017: Current Opinion in Clinical Nutrition and Metabolic Care
https://www.readbyqxmd.com/read/27935592/molecular-insights-into-a-dinoflagellate-bloom
#14
Weida Gong, Jamie Browne, Nathan Hall, David Schruth, Hans Paerl, Adrian Marchetti
In coastal waters worldwide, an increase in frequency and intensity of algal blooms has been attributed to eutrophication, with further increases predicted because of climate change. Yet, the cellular-level changes that occur in blooming algae remain largely unknown. Comparative metatranscriptomics was used to investigate the underlying molecular mechanisms associated with a dinoflagellate bloom in a eutrophied estuary. Here we show that under bloom conditions, there is increased expression of metabolic pathways indicative of rapidly growing cells, including energy production, carbon metabolism, transporters and synthesis of cellular membrane components...
February 2017: ISME Journal
https://www.readbyqxmd.com/read/27925712/quantitative-assessment-of-nutrition-in-patients-with-polycystic-ovary-syndrome-pcos
#15
Małgorzata Szczuko, Magdalena Skowronek, Marta Zapałowska-Chwyć, Andrzej Starczewski
Background: PCOS (polycystic ovary syndrome) is called a pathology of the XX century and affects at least 10-15% women of childbearing age. The therapy involves pharmacotherapy of hormonal imbalance, as well as the change of lifestyle, including the diet. Objective: Performing the quantitative assessment of components of diets of women with PCOS, comparing the results with current dietary standards for Polish people and defining dietary requirements for the patients...
2016: Roczniki Państwowego Zakładu Higieny
https://www.readbyqxmd.com/read/27870912/atp-hydrolysis-induced-conformational-changes-in-the-vitamin-b12-transporter-btucd-revealed-by-md-simulations
#16
Chao Pan, Jingwei Weng, Wenning Wang
ATP binding cassette (ABC) transporters utilize the energy of ATP hydrolysis to uni-directionally transport substrates across cell membrane. ATP hydrolysis occurs at the nucleotide-binding domain (NBD) dimer interface of ABC transporters, whereas substrate translocation takes place at the translocation pathway between the transmembrane domains (TMDs), which is more than 30 angstroms away from the NBD dimer interface. This raises the question of how the hydrolysis energy released at NBDs is "transmitted" to trigger the conformational changes at TMDs...
2016: PloS One
https://www.readbyqxmd.com/read/27825941/consumption-of-ultra-processed-foods-predicts-diet-quality-in-canada
#17
Jean-Claude Moubarac, M Batal, M L Louzada, E Martinez Steele, C A Monteiro
This study describes food consumption patterns in Canada according to the types of food processing using the Nova classification and investigates the association between consumption of ultra-processed foods and the nutrient profile of the diet. Dietary intakes of 33,694 individuals from the 2004 Canadian Community Health Survey aged 2 years and above were analyzed. Food and drinks were classified using Nova into unprocessed or minimally processed foods, processed culinary ingredients, processed foods and ultra-processed foods...
January 1, 2017: Appetite
https://www.readbyqxmd.com/read/27806272/allosteric-signaling-is-bidirectional-in-an-outer-membrane-transport-protein
#18
Arthur Sikora, Benesh Joseph, Morgan Matson, Jacob R Staley, David S Cafiso
In BtuB, the Escherichia coli TonB-dependent transporter for vitamin B12, substrate binding to the extracellular surface unfolds a conserved energy coupling motif termed the Ton box into the periplasm. This transmembrane signaling event facilitates an interaction between BtuB and the inner-membrane protein TonB. In this study, continuous-wave and pulse electron paramagnetic resonance in a native outer-membrane preparation demonstrate that signaling also occurs from the periplasmic to the extracellular surface in BtuB...
November 1, 2016: Biophysical Journal
https://www.readbyqxmd.com/read/27797190/toward-the-design-of-photoresponsive-conditional-antivitamins-b12-a-transient-absorption-study-of-an-arylcobalamin-and-an-alkynylcobalamin
#19
Nicholas A Miller, Theodore E Wiley, Kenneth G Spears, Markus Ruetz, Christoph Kieninger, Bernhard Kräutler, Roseanne J Sension
Cobalamins are of widespread importance in biology. Both of the cofactors essential for human metabolism, the organocobalamins coenzyme B12 and methylcobalamin, are highly photolabile, as are other alkylcobalamins. The alkynylcobalamin phenylethynylcobalamin (PhEtyCbl) and the arylcobalamin 4-ethylphenylcobalamin (EtPhCbl) with "atypical" Co-C-bonds to unsaturated carbons, were recently designed as metabolically inert cobalamins, classified as "antivitamins B12". The further development of an ideal light-activated or "conditional" antivitamin B12 would require it to be readily converted by light into an active B12 vitamin form...
October 24, 2016: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/27792245/malnutrition-and-risk-of-structural-brain-changes-seen-on-magnetic-resonance-imaging-in-older-adults
#20
Marian A E de van der Schueren, Sabine Lonterman-Monasch, Wiesje M van der Flier, Mark H Kramer, Andrea B Maier, Majon Muller
OBJECTIVES: To study the associations between protein energy malnutrition, micronutrient malnutrition, brain atrophy, and cerebrovascular lesions. DESIGN: Cross-sectional. SETTING: Geriatric outpatient clinic. PARTICIPANTS: Older adults (N = 475; mean age 80 ± 7). MEASUREMENTS: Nutritional status was assessed using the Mini Nutritional Assessment (MNA) and according to serum micronutrient levels (vitamins B1, B6, B12, D; folic acid)...
December 2016: Journal of the American Geriatrics Society
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