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https://www.readbyqxmd.com/read/28545081/perturbed-adipose-tissue-hydrogen-peroxide-metabolism-in-centrally-obese-men-association-with-insulin-resistance
#1
May G Akl, Eman Fawzy, Maha Deif, Ayman Farouk, Amany K Elshorbagy
OBJECTIVE: Although adipose tissue hydrogen peroxide (H2O2) and its metabolizing enzymes have been linked to obesity and insulin resistance in animal studies, this relation remains to be evaluated in humans. METHODS: Non-diabetic men (N = 43, median age, 49 (37, 54 y)) undergoing abdominal surgeries were studied. Participants were classified by body mass index (BMI) into normal-weight (N = 19), or overweight/obese (Ow/Ob; BMI ≥25; N = 24). Centrally obese men were identified by waist-height ratio ≥0...
2017: PloS One
https://www.readbyqxmd.com/read/28542421/insulin-resistance-according-to-%C3%AE-cell-function-in-women-with-polycystic-ovary-syndrome-and-normal-glucose-tolerance
#2
Do Kyeong Song, Young Sun Hong, Yeon-Ah Sung, Hyejin Lee
BACKGROUND: Polycystic ovary syndrome (PCOS) is associated with insulin resistance (IR) and compensatory hyperinsulinemia. IR is recognized as a major risk factor for the development of type 2 diabetes mellitus. However, few studies have investigated IR in women with PCOS and normal glucose tolerance. The objective of this study was to evaluate IR and β-cell function in women with PCOS and normal glucose tolerance. Additionally, we sought to evaluate the usefulness of oral glucose tolerance test (OGTT)-derived IR indices in lean women with PCOS...
2017: PloS One
https://www.readbyqxmd.com/read/28542222/differential-expression-of-islet-glutaredoxin-1-and-5-with-high-reactive-oxygen-species-production-in-a-mouse-model-of-diabesity
#3
Sebastian Friedrich Petry, Fatemeh Sharifpanah, Heinrich Sauer, Thomas Linn
The onset and progression of diabetes mellitus type 2 is highly contingent on the amount of functional beta-cell mass. An underlying cause of beta-cell decay in diabetes is oxidative stress, which markedly affects the insulin producing pancreatic cells due to their poor antioxidant defence capacity. Consequently, disturbances of cellular redox signaling have been implicated to play a major role in beta-cell loss in diabetes mellitus type 2. There is evidence suggesting that the glutaredoxin (Grx) system exerts a protective role for pancreatic islets, but the exact mechanisms have not yet been elucidated...
2017: PloS One
https://www.readbyqxmd.com/read/28539168/effectiveness-of-nutritional-supplementation-on-sarcopenia-and-recovery-in-hip-fracture-patients-a-multi-centre-randomized-trial
#4
Vincenzo Malafarina, Francisco Uriz-Otano, Concetta Malafarina, J Alfredo Martinez, M Angeles Zulet
BACKGROUND AND OBJECTIVES: Functional deterioration and reduced mobility in elderly patients with a hip fracture are associated with a loss of both muscle mass and function (sarcopenia). The aim of this study was to assess whether oral nutritional supplementation (ONS) improves muscle mass and nutritional markers (BMI, proteins) in elderly patients with hip fracture. METHODS: Patients aged 65 years and over with hip fractures admitted to either of two rehabilitation facilities were included...
July 2017: Maturitas
https://www.readbyqxmd.com/read/28533219/obesity-linked-phosphorylation-of-sirt1-by-ck2-inhibits-its-nuclear-localization-and-promotes-fatty-liver
#5
Sung E Choi, Sanghoon Kwon, Sunmi Seok, Zhen Xiao, Kwan-Woo Lee, Yup Kang, Xiaoling Li, Kosaku Shinoda, Shingo Kajimura, Byron Kemper, Jongsook Kim Kemper
Sirtuin1 (SIRT1) deacetylase delays and improves many obesity-related diseases, including non-alcoholic fatty liver disease (NAFLD) and diabetes, and has received great attention as a drug target. SIRT1 function is aberrantly low in obesity, so understanding the underlying mechanisms is important for drug development. Here, we show that obesity-linked phosphorylation of SIRT1 inhibits its function and promotes pathological symptoms of NAFLD. In proteomic analysis, Ser-164 was identified as a major serine phosphorylation site in SIRT1 in obese, but not lean, mice, and this phosphorylation was catalyzed by casein kinase-2 (CK2), the levels of which were dramatically elevated in obesity...
May 22, 2017: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/28518147/survivin-a-key-player-in-cancer-progression-increases-in-obesity-and-protects-adipose-tissue-stem-cells-from-apoptosis
#6
Miriam Ejarque, Victòria Ceperuelo-Mallafré, Carolina Serena, Gisela Pachón, Yaiza Núñez-Álvarez, Margarida Terrón-Puig, Enrique Calvo, Catalina Núñez-Roa, Wilfredo Oliva-Olivera, Francisco J Tinahones, Miguel Angel Peinado, Joan Vendrell, Sonia Fernández-Veledo
Adipose tissue (AT) has a central role in obesity-related metabolic imbalance through the dysregulated production of cytokines and adipokines. In addition to its known risk for cardiovascular disease and diabetes, obesity is also a major risk for cancer. We investigated the impact of obesity for the expression of survivin, an antiapoptotic protein upregulated by adipokines and a diagnostic biomarker of tumor onset and recurrence. In a cross-sectional study of 111 subjects classified by body mass index, circulating levels of survivin and gene expression in subcutaneous AT were significantly higher in obese patients and positively correlated with leptin...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28512155/functional-high-intensity-training-improves-pancreatic-%C3%AE-cell-function-in-adults-with-type-2-diabetes
#7
Stephan Nieuwoudt, Ciarán E Fealy, Julie A Foucher, Amanda R Scelsi, Steven K Malin, Mangesh R Pagadala, Michael Rocco, Bartolome Burguera, John P Kirwan
Type 2 diabetes (T2D) is characterized by reductions in β-cell function and insulin secretion on the background of elevated insulin resistance. Aerobic exercise has been shown to improve β-cell function, despite a subset of T2D patients displaying "exercise resistance". Further investigations into the effectiveness of alternate forms of exercise on β-cell function in the T2D patient population are needed. We examined the effect of a novel 6-week CrossFit™ Functional High Intensity Training (F-HIT) intervention on β-cell function in 12 sedentary adults with clinically diagnosed T2D (54±2 years, 166±16 mg/dL fasting glucose)...
May 16, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28508677/ketonuria-may-be-associated-with-low-serum-amylase-independent-of-body-weight-and-glucose-metabolism
#8
Kei Nakajima, Eiji Oda
CONTEXT: Ketonuria, which reflects a preferential combustion of lipids relative to carbohydrates, is often observed in lean rather than obese people. Clinical studies have shown that individuals with diabetes and/or obesity predispose to have low serum amylase (LSA). OBJECTIVE: To investigate the association between ketonuria and LSA. METHODS: We examined ketonuria assessed by dipstick urinalysis and clinical parameters including serum amylase in 3638 Japanese people aged 25-79 years who underwent a health-screening checkup...
May 16, 2017: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28508444/increased-adipose-tissue-expression-of-il-18r-and-its-ligand-il-18-associates-with-inflammation-and-insulin-resistance-in-obesity
#9
Rasheed Ahmad, Reeby Thomas, Shihab Kochumon, Sardar Sindhu
INTRODUCTION: The proinflammatory cytokine IL-18 is involved in the pathogenesis of metabolic syndrome. While the changes in IL-18 are known, IL-18R expression and relationship with IL-18 and other inflammatory markers in the adipose tissue in obesity/type-2 diabetes (T2D) remain unclear. METHODS: We, therefore, determined the adipose tissue expression of IL-18R and IL-18 mRNA/protein in lean, overweight, and obese individuals with and without T2D, 15 each, using qRT-PCR, immunohistochemistry, and confocal microscopy...
May 15, 2017: Immunity, Inflammation and Disease
https://www.readbyqxmd.com/read/28507015/preserving-healthy-muscle-during-weight-loss
#10
REVIEW
Edda Cava, Nai Chien Yeat, Bettina Mittendorfer
Weight loss is the cornerstone of therapy for people with obesity because it can ameliorate or completely resolve the metabolic risk factors for diabetes, coronary artery disease, and obesity-associated cancers. The potential health benefits of diet-induced weight loss are thought to be compromised by the weight-loss-associated loss of lean body mass, which could increase the risk of sarcopenia (low muscle mass and impaired muscle function). The objective of this review is to provide an overview of what is known about weight-loss-induced muscle loss and its implications for overall physical function (e...
May 2017: Advances in Nutrition
https://www.readbyqxmd.com/read/28502112/sglt2-inhibitor-luseogliflozin-added-to-glucagon-like-peptide-1-receptor-agonist-liraglutide-improves-glycemic-control-with-bodyweight-and-fat-mass-reductions-in-japanese-patients-with-type-2-diabetes-a-52-week-open-label-single-arm-study
#11
Yutaka Seino, Daisuke Yabe, Takashi Sasaki, Atsushi Fukatsu, Hisae Imazeki, Hidekazu Ochiai, Soichi Sakai
AIMS/INTRODUCTION: To evaluate the safety and efficacy of luseogliflozin added to liraglutide monotherapy in Japanese individuals with type 2 diabetes (T2D). MATERIALS AND METHODS: This 52-week, multicenter, open-label, single-arm clinical study enrolled Japanese patients who had inadequate glycemic control with diet/exercise and liraglutide monotherapy. Major efficacy endpoints included the changes from baseline in HbA1c, fasting plasma glucose (FPG), and bodyweight...
May 14, 2017: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/28486003/placental-lipoprotein-lipase-dna-methylation-alterations-are-associated-with-gestational-diabetes-and-body-composition-at-5%C3%A2-years-of-age
#12
Valérie Gagné-Ouellet, Andrée-Anne Houde, Simon-Pierre Guay, Patrice Perron, Daniel Gaudet, Renée Guérin, Jean-Patrice Baillargeon, Marie-France Hivert, Diane Brisson, Luigi Bouchard
Gestational diabetes mellitus (GDM) is associated with obesity in childhood. This suggests that consequences of in utero exposure to maternal hyperglycemia extend beyond the fetal development, possibly through epigenetic programming. The aims of this study were to assess whether placental DNA methylation (DNAm) marks were associated with maternal GDM status and to offspring body composition at 5 years old in a prospective birth cohort. DNAm levels were measured in the fetal side of the placenta in 66 samples (24 from GDM mothers) using bisDNA-pyrosequencing...
May 9, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/28481965/polypharmacy-as-a-risk-factor-for-clinically-relevant-sarcopenia-results-from-the-berlin-aging-study-ii
#13
Maximilian König, Dominik Spira, Ilja Demuth, Elisabeth Steinhagen-Thiessen, Kristina Norman
Background: Sarcopenia affects more than 10% of older adults. Next to age-associated physiologic changes, diseases like diabetes or inflammatory, neurological, malignant and endocrine disorders may contribute to the development of sarcopenia. Likewise, polypharmacy, i.e., multiple drug use, is common among older adults. Although the two conditions frequently co-occur, the association of polypharmacy with sarcopenia has not yet been examined. We investigated the association of polypharmacy and sarcopenia in a large cohort of community-dwelling older adults (60-84 years)...
May 6, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28481907/relationship-between-anthropometric-parameters-and-open-angle-glaucoma-the-korea-national-health-and-nutrition-examination-survey
#14
Jae Yeun Lee, Tae-Woo Kim, Hyun Tae Kim, Mi Yeon Lee, Hye Won Min, Yu Sam Won, Hyun Seok Kwon, Ki Ho Park, Joon Mo Kim
AIMS: To evaluate the relationships between open-angle glaucoma (OAG) and various anthropometric measurements. DESIGN: Korea National Health and Nutrition Examination Survey (KNHANES), a population-based cross-sectional study using a complex, stratified, multistage, probability-cluster survey. METHODS: A total of 5,255 participants including 247 glaucoma patients, aged ≥ 19 years were included from the KNHANES V database. Glaucoma diagnosis was based on International Society of Geographical and Epidemiological Ophthalmology criteria...
2017: PloS One
https://www.readbyqxmd.com/read/28474364/pancreatic-%C3%AE-cell-mass-in-obesity
#15
Johanne H Ellenbroek, Hendrica A M Töns, Maaike A J Hanegraaf, Ton J Rabelink, Marten A Engelse, Françoise Carlotti, Eelco J P de Koning
While it is well recognized that obesity is associated with an increased β-cell mass, it is less clear with respect to α-cell mass. Type 2 diabetes associated with obesity is a bihormonal disease characterized by inadequate insulin secretion and hyperglucagonemia. We examined β- and α-cell mass of obese and lean human subjects throughout the pancreas. Pancreatic tissue of the head-, body- and tail-region of the pancreas was examined from 15 obese subjects (Body Mass Index (BMI) ≥ 27 kg/m2) and 15 age-matched lean subjects (BMI ≤ 25 kg/m2) without diabetes...
May 4, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28470119/acute-effects-of-morning-light-on-plasma-glucose-and-triglycerides-in-healthy-men-and-men-with-type-2-diabetes
#16
Ruth I Versteeg, Dirk J Stenvers, Dana Visintainer, Andre Linnenbank, Michael W Tanck, Gooitzen Zwanenburg, Age K Smilde, Eric Fliers, Andries Kalsbeek, Mireille J Serlie, Susanne E la Fleur, Peter H Bisschop
Ambient light intensity is signaled directly to hypothalamic areas that regulate energy metabolism. Observational studies have shown associations between ambient light intensity and plasma glucose and lipid levels, but human data on the acute metabolic effects of light are scarce. Since light is the main signal indicating the onset of the diurnal phase of physical activity and food intake in humans, we hypothesized that bright light would affect glucose and lipid metabolism. Therefore, we determined the acute effects of bright light on plasma glucose and lipid concentrations in 2 randomized crossover trials: (1) in 8 healthy lean men and (2) in 8 obese men with type 2 diabetes...
April 2017: Journal of Biological Rhythms
https://www.readbyqxmd.com/read/28467785/association-of-lower-body-mass-index-with-increased-glycemic-variability-in-patients-with-newly-diagnosed-type-2-diabetes-a-cross-sectional-study-in-china
#17
Jian Wang, Rengna Yan, Juan Wen, Xiaocen Kong, Huiqin Li, Peihua Zhou, Honghong Zhu, Xiaofei Su, Jianhua Ma
Previous studies have indicated that the pathogenesis of diabetes differs between obese and lean patients. We investigated whether newly diagnosed Chinese diabetic patients with different body mass indices (BMIs) have different glycemic variability, and we assessed the relationship between BMI and glycemic variability. This was a cross-sectional study that included 169 newly diagnosed and drug-naïve type 2 diabetic patients (mean age, 51.33 ± 9.83 years; 110 men). The clinical factors and results of the 75-g oral glucose tolerance test were all recorded...
April 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28460190/exercise-improves-femoral-whole-bone-and-tissue-level-biomechanical-properties-in-hyperphagic-oletf-rats
#18
Laura C Ortinau, Melissa A Linden, R Scott Rector, Pamela S Hinton
An often-overlooked comorbidity of type 2 diabetes (T2D) is increased fracture risk. Since traditional T2D therapies focus solely on glucose homeostasis, there is an increased need for effective treatment strategies that improve both metabolic and bone health. The current study evaluated if previously reported protective effects of exercise (EX) on cortical bone geometry and biomechanical properties are due to the prevention of obesity compared to obese Otsuka Long-Evans Tokushima Fatty (OLETF) rats or the unique skeletal effects of exercise...
May 1, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28458353/the-sodium-glucose-cotransporter-2-inhibitor-ipragliflozin-promotes-preferential-loss-of-fat-mass-in-non-obese-diabetic-goto-kakizaki-rats
#19
Toshiyuki Takasu, Yuka Hayashizaki, Jiro Hirosumi, Hideaki Minoura, Nobuaki Amino, Eiji Kurosaki, Shoji Takakura
Sodium glucose cotransporter 2 (SGLT2) inhibitors improve hyperglycemia in patients with type 2 diabetes mellitus (T2DM) by increasing urinary glucose excretion. In addition to their antihyperglycemic effect, SGLT2 inhibitors also reduce body weight and fat mass in obese and overweight patients with T2DM. However, whether or not SGLT2 inhibitors similarly affect body composition of non-obese patients with T2DM remains unclear. In this study, we investigated the effect of the SGLT2 inhibitor ipragliflozin on body composition in a Goto-Kakizaki (GK) rat model of non-obese T2DM...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28448447/factors-associated-with-decreased-lean-tissue-index-in-patients-with-chronic-kidney-disease
#20
Yi-Wen Wang, Ting-Yun Lin, Ching-Hsiu Peng, Jui-Lin Huang, Szu-Chun Hung
Muscle wasting is common and is associated with increased morbidity and mortality in patients with chronic kidney disease (CKD). However, factors associated with decreased muscle mass in CKD patients are seldom reported. We performed a cross-sectional study of 326 patients (age 65.8 ± 13.3 years) with stage 3-5 CKD who were not yet on dialysis. Muscle mass was determined using the Body Composition Monitor (BCM), a multifrequency bioimpedance spectroscopy device, and was expressed as the lean tissue index (LTI, lean tissue mass/height²)...
April 27, 2017: Nutrients
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