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Fat bias

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https://www.readbyqxmd.com/read/28323377/accuracy-of-pdff-estimation-by-magnitude-based-and-complex-based-mri-in-children-with-mr-spectroscopy-as-a-reference
#1
William M Haufe, Tanya Wolfson, Catherine A Hooker, Jonathan C Hooker, Yesenia Covarrubias, Alex N Schlein, Gavin Hamilton, Michael S Middleton, Jorge E Angeles, Diego Hernando, Scott B Reeder, Jeffrey B Schwimmer, Claude B Sirlin
PURPOSE: To assess and compare the accuracy of magnitude-based magnetic resonance imaging (MRI-M) and complex-based MRI (MRI-C) for estimating hepatic proton density fat fraction (PDFF) in children, using MR spectroscopy (MRS) as the reference standard. A secondary aim was to assess the agreement between MRI-M and MRI-C. MATERIALS AND METHODS: This was a HIPAA-compliant, retrospective analysis of data collected in children enrolled in prospective, Institutional Review Board (IRB)-approved studies between 2012 and 2014...
March 21, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28302391/non-uniform-muscle-fat-replacement-along-the-proximodistal-axis-in-duchenne-muscular-dystrophy
#2
M T Hooijmans, E H Niks, J Burakiewicz, C Anastasopoulos, S I van den Berg, E van Zwet, A G Webb, J J G M Verschuuren, H E Kan
The progressive replacement of muscle tissue by fat in Duchenne muscular dystrophy (DMD) has been studied using quantitative MRI between, but not within, individual muscles. We studied fat replacement along the proximodistal muscle axis using the Dixon technique on a 3T MR scanner in 22 DMD patients and 12 healthy controls. Mean fat fractions per muscle per slice for seven lower and upper leg muscles were compared between and within groups assuming a parabolic distribution. Average fat fraction for a small central slice stack and a large coverage slice stack were compared to the value when the stack was shifted one slice (15 mm) up or down...
February 21, 2017: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/28267855/association-between-dietary-factors-and-mortality-from-heart-disease-stroke-and-type-2-diabetes-in-the-united-states
#3
Renata Micha, Jose L Peñalvo, Frederick Cudhea, Fumiaki Imamura, Colin D Rehm, Dariush Mozaffarian
Importance: In the United States, national associations of individual dietary factors with specific cardiometabolic diseases are not well established. Objective: To estimate associations of intake of 10 specific dietary factors with mortality due to heart disease, stroke, and type 2 diabetes (cardiometabolic mortality) among US adults. Design, Setting, and Participants: A comparative risk assessment model incorporated data and corresponding uncertainty on population demographics and dietary habits from National Health and Nutrition Examination Surveys (1999-2002: n = 8104; 2009-2012: n = 8516); estimated associations of diet and disease from meta-analyses of prospective studies and clinical trials with validity analyses to assess potential bias; and estimated disease-specific national mortality from the National Center for Health Statistics...
March 7, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28262916/vitamin-e-supplementation-in-people-with-cystic-fibrosis
#4
REVIEW
Peter O Okebukola, Sonal Kansra, Joanne Barrett
BACKGROUND: People with cystic fibrosis are at an increased risk of fat-soluble vitamin deficiency including vitamin E. Vitamin E deficiency can cause a host of conditions such as haemolytic anaemia, cerebellar ataxia and cognitive difficulties. Vitamin E supplementation is widely recommended in cystic fibrosis and aims to ameliorate this deficiency. This is an updated version of the review. OBJECTIVES: To determine the effects of any level of vitamin E supplementation on the frequency of vitamin E deficiency disorders in people with cystic fibrosis...
March 6, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28259403/evaluation-of-the-national-research-council-2001-dairy-model-and-derivation-of-new-prediction-equations-1-digestibility-of-fiber-fat-protein-and-nonfiber-carbohydrate
#5
R R White, Y Roman-Garcia, J L Firkins, M J VandeHaar, L E Armentano, W P Weiss, T McGill, R Garnett, M D Hanigan
Evaluation of ration balancing systems such as the National Research Council (NRC) Nutrient Requirements series is important for improving predictions of animal nutrient requirements and advancing feeding strategies. This work used a literature data set (n = 550) to evaluate predictions of total-tract digested neutral detergent fiber (NDF), fatty acid (FA), crude protein (CP), and nonfiber carbohydrate (NFC) estimated by the NRC (2001) dairy model. Mean biases suggested that the NRC (2001) lactating cow model overestimated true FA and CP digestibility by 26 and 7%, respectively, and under-predicted NDF digestibility by 16%...
March 2, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28258777/multiple-risk-behavior-interventions-meta-analyses-of-rcts
#6
REVIEW
Nick Meader, Kristelle King, Kath Wright, Hilary M Graham, Mark Petticrew, Chris Power, Martin White, Amanda J Sowden
CONTEXT: Multiple risk behaviors are common and associated with developing chronic conditions such as heart disease, cancer, or Type 2 diabetes. A systematic review, meta-analysis, and meta-regression of the effectiveness of multiple risk behavior interventions was conducted. EVIDENCE ACQUISITION: Six electronic databases including MEDLINE, EMBASE, and PsycINFO were searched to August 2016. RCTs of non-pharmacologic interventions in general adult populations were selected...
February 28, 2017: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28253910/evaluating-overweight-and-obesity-prevalence-in-survivors-of-childhood-brain-tumors-a-systematic-review-protocol
#7
Kuan-Wen Wang, Adam Fleming, Sheila K Singh, Laura Banfield, Russell J de Souza, Lehana Thabane, M Constantine Samaan
BACKGROUND: Overweight and obesity are well-known risk factors for cardiometabolic diseases including hypertension, myocardial infarction, stroke, and type 2 diabetes in the general population. Survivors of childhood brain tumors (SCBT) are at risk of premature mortality, and recent evidence suggests that these cardiometabolic diseases are potential emerging determinants of survival and quality of life. Therefore, the rates of overweight and obesity in this population need to be examined to assess their impact on outcomes...
March 3, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28239834/order-constrained-linear-optimization
#8
Joe W Tidwell, Michael R Dougherty, Jeffrey S Chrabaszcz, Rick P Thomas
Despite the fact that data and theories in the social, behavioural, and health sciences are often represented on an ordinal scale, there has been relatively little emphasis on modelling ordinal properties. The most common analytic framework used in psychological science is the general linear model, whose variants include ANOVA, MANOVA, and ordinary linear regression. While these methods are designed to provide the best fit to the metric properties of the data, they are not designed to maximally model ordinal properties...
February 27, 2017: British Journal of Mathematical and Statistical Psychology
https://www.readbyqxmd.com/read/28236966/regulation-of-drosophila-development-by-the-golgi-kinase-four-jointed
#9
Yoko Keira, Moe Wada, Hiroyuki O Ishikawa
Despite intensive research on kinases and protein phosphorylation, most studies focus on kinases localized to the cytosol and nucleus. Studies in Drosophila discovered a novel signaling pathway that regulates growth and planar cell polarity. In this pathway, the atypical cadherin Fat acts as a receptor, and the cadherin Dachsous (Ds) serves as its ligand. Genetic studies in Drosophila identified the four-jointed gene as a regulator of the Fat pathway. Four-jointed (Fj) resides in the Golgi and phosphorylates the cadherin domains of Fat and Ds...
2017: Current Topics in Developmental Biology
https://www.readbyqxmd.com/read/28236296/different-types-of-dietary-advice-for-women-with-gestational-diabetes-mellitus
#10
REVIEW
Shanshan Han, Philippa Middleton, Emily Shepherd, Emer Van Ryswyk, Caroline A Crowther
BACKGROUND: Dietary advice is the main strategy for managing gestational diabetes mellitus (GDM). It remains unclear what type of advice is best. OBJECTIVES: To assess the effects of different types of dietary advice for women with GDM for improving health outcomes for women and babies. SEARCH METHODS: We searched Cochrane Pregnancy and Childbirth's Trials Register (8 March 2016), PSANZ's Trials Registry (22 March 2016) and reference lists of retrieved studies...
February 25, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28228693/health-benefits-of-dietary-whole-grains-an-umbrella-review-of-meta-analyses
#11
REVIEW
Marc P McRae
OBJECTIVE: The purpose of this study is to review the effectiveness of the role of whole grain as a therapeutic agent in type 2 diabetes, cardiovascular disease, cancer, and obesity. METHODS: An umbrella review of all published meta-analyses was performed. A PubMed search from January 1, 1980, to May 31, 2016, was conducted using the following search strategy: (whole grain OR whole grains) AND (meta-analysis OR systematic review). Only English language publications that provided quantitative statistical analysis on type 2 diabetes, cardiovascular disease, cancer, and weight loss were retrieved...
March 2017: Journal of Chiropractic Medicine
https://www.readbyqxmd.com/read/28212047/multimaterial-decomposition-algorithm-for-the-quantification-of-liver-fat-content-by-using-fast-kilovolt-peak-switching-dual-energy-ct-clinical-evaluation
#12
Tomoko Hyodo, Norihisa Yada, Masatoshi Hori, Osamu Maenishi, Peter Lamb, Kosuke Sasaki, Minori Onoda, Masatoshi Kudo, Teruhito Mochizuki, Takamichi Murakami
Purpose To assess the clinical accuracy and reproducibility of liver fat quantification with the multimaterial decomposition (MMD) algorithm, comparing the performance of MMD with that of magnetic resonance (MR) spectroscopy by using liver biopsy as the reference standard. Materials and Methods This prospective study was approved by the institutional ethics committee, and patients provided written informed consent. Thirty-three patients suspected of having hepatic steatosis underwent non-contrast material-enhanced and triple-phase dynamic contrast-enhanced dual-energy computed tomography (CT) (80 and 140 kVp) and single-voxel proton MR spectroscopy within 30 days before liver biopsy...
April 2017: Radiology
https://www.readbyqxmd.com/read/28211056/targeted-mass-media-interventions-promoting-healthy-behaviours-to-reduce-risk-of-non-communicable-diseases-in-adult-ethnic-minorities
#13
REVIEW
Annhild Mosdøl, Ingeborg B Lidal, Gyri H Straumann, Gunn E Vist
BACKGROUND: Physical activity, a balanced diet, avoidance of tobacco exposure, and limited alcohol consumption may reduce morbidity and mortality from non-communicable diseases (NCDs). Mass media interventions are commonly used to encourage healthier behaviours in population groups. It is unclear whether targeted mass media interventions for ethnic minority groups are more or less effective in changing behaviours than those developed for the general population. OBJECTIVES: To determine the effects of mass media interventions targeting adult ethnic minorities with messages about physical activity, dietary patterns, tobacco use or alcohol consumption to reduce the risk of NCDs...
February 17, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28210936/does-obesity-affect-the-non-invasive-measurement-of-cardiac-output-performed-by-electrical-cardiometry-in-children-and-adolescents
#14
Luis Altamirano-Diaz, Eva Welisch, Ralf Rauch, Michael Miller, Teresa Sohee Park, Kambiz Norozi
Electrical cardiometry (EC) is a non-invasive and inexpensive method for hemodynamic assessment and monitoring. However, its feasibility for widespread clinical use, especially for the obese population, has yet to be determined. In this study, we evaluated the agreement and reliability of EC compared to transthoracic Doppler echocardiography (TTE) in normal, overweight, and obese children and adolescents. We measured stroke volume (SV) and cardiac output (CO) of 131 participants using EC and TTE simultaneously...
February 17, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28207294/validity-of-core-temperature-measurements-at-3-rectal-depths-during-rest-exercise-cold-water-immersion-and-recovery
#15
Kevin C Miller, Lexie E Hughes, Blaine C Long, William M Adams, Douglas J Casa
CONTEXT:  No evidence-based recommendation exists regarding how far clinicians should insert a rectal thermistor to obtain the most valid estimate of core temperature. Knowing the validity of temperatures at different rectal depths has implications for exertional heat-stroke (EHS) management. OBJECTIVE:  To determine whether rectal temperature (Trec) taken at 4 cm, 10 cm, or 15 cm from the anal sphincter provides the most valid estimate of core temperature (as determined by esophageal temperature [Teso]) during similar stressors an athlete with EHS may experience...
February 16, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28202779/fasting-mimicking-diet-and-markers-risk-factors-for-aging-diabetes-cancer-and-cardiovascular-disease
#16
Min Wei, Sebastian Brandhorst, Mahshid Shelehchi, Hamed Mirzaei, Chia Wei Cheng, Julia Budniak, Susan Groshen, Wendy J Mack, Esra Guen, Stefano Di Biase, Pinchas Cohen, Todd E Morgan, Tanya Dorff, Kurt Hong, Andreas Michalsen, Alessandro Laviano, Valter D Longo
Calorie restriction or changes in dietary composition can enhance healthy aging, but the inability of most subjects to adhere to chronic and extreme diets, as well as potentially adverse effects, limits their application. We randomized 100 generally healthy participants from the United States into two study arms and tested the effects of a fasting-mimicking diet (FMD)-low in calories, sugars, and protein but high in unsaturated fats-on markers/risk factors associated with aging and age-related diseases. We compared subjects who followed 3 months of an unrestricted diet to subjects who consumed the FMD for 5 consecutive days per month for 3 months...
February 15, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28190771/obesity-induced-metabolic-stress-leads-to-biased-effector-memory-cd4-t-cell-differentiation-via-pi3k-p110%C3%AE-akt-mediated-signals
#17
Claudio Mauro, Joanne Smith, Danilo Cucchi, David Coe, Hongmei Fu, Fabrizia Bonacina, Andrea Baragetti, Gaia Cermenati, Donatella Caruso, Nico Mitro, Alberico L Catapano, Enrico Ammirati, Maria P Longhi, Klaus Okkenhaug, Giuseppe D Norata, Federica M Marelli-Berg
Low-grade systemic inflammation associated to obesity leads to cardiovascular complications, caused partly by infiltration of adipose and vascular tissue by effector T cells. The signals leading to T cell differentiation and tissue infiltration during obesity are poorly understood. We tested whether saturated fatty acid-induced metabolic stress affects differentiation and trafficking patterns of CD4(+) T cells. Memory CD4(+) T cells primed in high-fat diet-fed donors preferentially migrated to non-lymphoid, inflammatory sites, independent of the metabolic status of the hosts...
March 7, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28183444/effects-of-lifestyle-interventions-on-clinical-characteristics-of-patients-with-non-alcoholic-fatty-liver-disease-a-meta-analysis
#18
Christina N Katsagoni, Michael Georgoulis, George V Papatheodoridis, Demosthenes B Panagiotakos, Meropi D Kontogianni
BACKGROUND/OBJECTIVES: Although lifestyle modifications remain the cornerstone therapy for non-alcoholic fatty liver disease (NAFLD), the optimal lifestyle intervention is still controversial. The aim of this meta-analysis was to evaluate the effect of exercise and/or dietary interventions, type or intensity of exercise and type of diet, on liver function outcomes (liver enzymes, intrahepatic fat and liver histology), as well as on anthropometric and glucose metabolism parameters in NAFLD patients...
March 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28177732/determination-of-the-exercise-intensity-that-elicits-maximal-fat-oxidation-in-individuals-with-obesity
#19
Sune Dandanell, Charlotte Boslev Præst, Stine Dam Søndergård, Camilla Skovborg, Flemming Dela, Steen Larsen, Jørn Wulff Helge
Maximal fat oxidation (MFO) and the exercise intensity that elicits MFO (FatMax) are commonly determined by indirect calorimetry during graded exercise tests in both obese and normal-weight individuals. However, no protocol has been validated in individuals with obesity. Thus, the aims were to develop a graded exercise protocol for determination of FatMax in individuals with obesity, and to test validity and inter-method reliability. Fat oxidation was assessed over a range of exercise intensities in 16 individuals (age: 28 (26-29) years; body mass index: 36 (35-38) kg·m(-2); 95% confidence interval) on a cycle ergometer...
December 19, 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28162956/exercise-and-ectopic-fat-in-type-2-diabetes-a-systematic-review-and-meta-analysis
#20
REVIEW
A Sabag, K L Way, S E Keating, R N Sultana, H T O'Connor, M K Baker, V H Chuter, J George, N A Johnson
Ectopic adipose tissue surrounding the intra-abdominal organs (visceral fat) and located in the liver, heart, pancreas and muscle, is linked to cardio-metabolic complications commonly experienced in type 2 diabetes. A systematic review and meta-analysis was performed to determine the effect of exercise on ectopic fat in adults with type 2 diabetes. Relevant databases were searched to February 2016. Included were randomised controlled studies, which implemented≥4 weeks of aerobic and/or resistance exercise and quantified ectopic fat via magnetic resonance imaging, computed tomography, proton magnetic resonance spectroscopy or muscle biopsy before and after intervention...
February 2, 2017: Diabetes & Metabolism
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