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https://www.readbyqxmd.com/read/28804876/insulin-resistance-in-pregnant-women-with-and-without-polycystic-ovary-syndrome-and-measures-of-body-composition-in-offspring-at-birth-and-3-years-of-age
#1
Sara Kristín Finnbogadóttir, Dorte Glintborg, Tina Kold Jensen, Henriette Kyhl, Ellen A Nohr, Marianne Andersen
Polycystic ovary syndrome (PCOS) is associated with obesity and insulin resistance in the non-pregnant state, but little is known about insulin sensitivity in the pregnant state. Our objective was to compare insulin resistance in pregnant women with and without PCOS and explore the impact of PCOS on body composition in offspring at birth and at 3 years of age MATERIAL AND METHODS: A prospective cohort study including 2548 live born singleton mother-child pairs residing in Odense municipality, Denmark, during 2010-2013...
August 14, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28803396/early-regression-of-carotid-intima-media-thickness-after-bariatric-surgery-and-its-relation-to-serum-leptin-reduction
#2
G Lambert, Marcelo Miranda de Oliveira Lima, A C Felici, J C Pareja, A C J Vasques, F S Novaes, S Rodovalho, F F P Hirsch, J R Matos-Souza, Élinton A Chaim, B Geloneze
PURPOSE: Bariatric surgery (BS) promotes carotid intima-media thickness (C-IMT) regression as early as 6 months post-surgery. To verify whether C-IMT regression occurs even earlier, we aimed at the effect of Roux-en-Y gastric bypass (RYGBP) and biliopancreatic diversion (BPD) on C-IMT 1-2 months and 12 months post-surgery. SUBJECTS/METHODS: Prospective trial. BS was performed on 109 patients either with (RYGBP = 42; BDP = 40) or without type 2 diabetes (RYGBP = 27)...
August 12, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28797289/insulin-resistance-and-associated-factors-among-hiv-infected-patients-in-sub-saharan-africa-a-cross-sectional-study-from-cameroon
#3
Steve Raoul Ngongang Noumegni, Jobert Richie Nansseu, Vicky Jocelyne Moor Ama, Jean Joel Bigna, Felix Kembe Assah, Magellan Guewo-Fokeng, Steve Leumi, Jean-Claude Katte, Mesmin Dehayem, Andre Pascal Kengne, Eugene Sobngwi
BACKGROUND: Little is known on the magnitude and correlates of insulin resistance in HIV-infected people in Africa. We determined the prevalence of insulin resistance and investigated associated factors in HIV-infected adult Cameroonians. METHODS: We conducted a cross-sectional study at the Yaoundé Central Hospital, Cameroon; during which we enrolled HIV-infected people aged 30 to 74 years with no previous history of cardiovascular disease. An homeostatic model assessment of insulin resistance (HOMA-IR) like index served to assess insulin sensitivity with insulin resistance defined by values of 2...
August 10, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28797248/the-role-of-bariatric-surgery-to-treat-diabetes-current-challenges-and-perspectives
#4
REVIEW
Chrysi Koliaki, Stavros Liatis, Carel W le Roux, Alexander Kokkinos
Bariatric surgery is emerging as a powerful weapon against severe obesity and type 2 diabetes mellitus (T2DM). Given its role in metabolic regulation, the gastrointestinal tract constitutes a meaningful target to treat T2DM, especially in light of accumulating evidence that surgery with gastrointestinal manipulations may result in T2DM remission (metabolic surgery). The major mechanisms mediating the weight loss-independent effects of bariatric surgery comprise effects on tissue-specific insulin sensitivity, β-cell function and incretin responses, changes in bile acid composition and flow, modifications of gut microbiota, intestinal glucose metabolism and increased brown adipose tissue metabolic activity...
August 10, 2017: BMC Endocrine Disorders
https://www.readbyqxmd.com/read/28795972/acetate-a-diet-derived-key-metabolite-in-energy-metabolism-good-or-bad-in-context-of-obesity-and-glucose-homeostasis
#5
Emanuel E Canfora, Ellen E Blaak
PURPOSE OF REVIEW: To highlight recent research findings on effects of the short-chain fatty acid acetate in the control of body weight, insulin sensitivity, and glucose homeostasis. For this purpose, relevant animal and human in-vivo studies were reviewed and putative mechanisms and pathways were discussed. RECENT FINDINGS: Animal and human in-vivo studies provide strong indications for a beneficial role of orally ingested or colonically derived acetate, in the energy and substrate metabolism, thereby preventing or reversing the obese insulin-resistant phenotype...
August 8, 2017: Current Opinion in Clinical Nutrition and Metabolic Care
https://www.readbyqxmd.com/read/28795262/growth-factor-energy-and-nutrient-sensing-signalling-pathways-in-metabolic-ageing
#6
Lucia Bettedi, Lazaros C Foukas
The field of the biology of ageing has received increasing attention from a biomedical point of view over the past decades. The main reason has been the realisation that increases in human population life expectancy are accompanied by late onset diseases. Indeed, ageing is the most important risk factor for a number of neoplastic, neurodegenerative and metabolic pathologies. Advances in the knowledge of the genetics of ageing, mainly through research in model organisms, have implicated various cellular processes and the respective signalling pathways that regulate them in cellular and organismal ageing...
August 9, 2017: Biogerontology
https://www.readbyqxmd.com/read/28794439/maternal-low-intensity-physical-exercise-prevents-obesity-in-offspring-rats-exposed-to-early-overnutrition
#7
Tatiane Aparecida Ribeiro, Laize Peron Tófolo, Isabela Peixoto Martins, Audrei Pavanello, Júlio Cezar de Oliveira, Kelly Valério Prates, Rosiane Aparecida Miranda, Claudinéia Conationi da Silva Franco, Rodrigo Mello Gomes, Flávio Andrade Francisco, Vander Silva Alves, Douglas Lopes de Almeida, Veridiana Mota Moreira, Kesia Palma-Rigo, Elaine Vieira, Gabriel Sergio Fabricio, Marcos Ricardo da Silva Rodrigues, Wilson Rinaldi, Ananda Malta, Paulo Cezar de Freitas Mathias
Low intensity exercise during pregnancy and lactation may create a protective effect against the development of obesity in offspring exposed to overnutrition in early life. To test these hypotheses, pregnant rats were randomly assigned into 2 groups: Sedentary and Exercised, low intensity, on a rodent treadmill at 30% VO2Max /30-minute/session/3x/week throughout pregnancy and the lactation. Male offspring were raised in small litters (SL, 3 pups/dam) and normal litters (NL, 9 pups/dam) as models of early overnutrition and normal feed, respectively...
August 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28794431/macrophage-jak2-deficiency-protects-against-high-fat-diet-induced-inflammation
#8
Harsh R Desai, Tharini Sivasubramaniyam, Xavier S Revelo, Stephanie A Schroer, Cynthia T Luk, Prashanth R Rikkala, Adam H Metherel, David W Dodington, Yoo Jin Park, Min Jeong Kim, Joshua A Rapps, Rickvinder Besla, Clinton S Robbins, Kay-Uwe Wagner, Richard P Bazinet, Daniel A Winer, Minna Woo
During obesity, macrophages can infiltrate metabolic tissues, and contribute to chronic low-grade inflammation, and mediate insulin resistance and diabetes. Recent studies have elucidated the metabolic role of JAK2, a key mediator downstream of various cytokines and growth factors. Our study addresses the essential role of macrophage JAK2 in the pathogenesis to obesity-associated inflammation and insulin resistance. During high-fat diet (HFD) feeding, macrophage-specific JAK2 knockout (M-JAK2(-/-)) mice gained less body weight compared to wildtype littermate control (M-JAK2(+/+)) mice and were protected from HFD-induced systemic insulin resistance...
August 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28793995/transcriptome-profiling-from-adipose-tissue-during-a-low-calorie-diet-reveals-predictors-of-weight-and-glycemic-outcomes-in-obese-nondiabetic-subjects
#9
Claudia Armenise, Gregory Lefebvre, Jérôme Carayol, Sophie Bonnel, Jennifer Bolton, Alessandro Di Cara, Nele Gheldof, Patrick Descombes, Dominique Langin, Wim Hm Saris, Arne Astrup, Jörg Hager, Nathalie Viguerie, Armand Valsesia
Background: A low-calorie diet (LCD) reduces fat mass excess, improves insulin sensitivity, and alters adipose tissue (AT) gene expression, yet the relation with clinical outcomes remains unclear.Objective: We evaluated AT transcriptome alterations during an LCD and the association with weight and glycemic outcomes both at LCD termination and 6 mo after the LCD.Design: Using RNA sequencing (RNAseq), we analyzed transcriptome changes in AT from 191 obese, nondiabetic patients within a multicenter, controlled dietary intervention...
August 9, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28780747/niclosamide-piperazine-prevents-high-fat-diet-induced-obesity-and-diabetic-symptoms-in-mice
#10
Jingjing Guo, Hanlin Tao, Amer Alasadi, Qingrong Huang, Shengkan Jin
PURPOSE: Obesity and type 2 diabetes (T2D) have become the major public health challenges globally. Mitochondrial uncoupling, which reduces intracellular lipid loads and corrects the underlying cause of insulin resistance, has emerged as a promising anti-obese and anti-diabetic intervention. Niclosamide is an anthelmintic drug approved by the US FDA with the mechanism of action that uncouples mitochondria of parasitic worms. Recently, niclosamide ethanolamine salt (NEN) was found to be a safe and effective hepatic mitochondrial uncoupler for the prevention and treatment of obesity and T2D in mouse models...
August 5, 2017: Eating and Weight Disorders: EWD
https://www.readbyqxmd.com/read/28780627/primary-pediatric-hypertension-current-understanding-and-emerging-concepts
#11
REVIEW
Andrew C Tiu, Michael D Bishop, Laureano D Asico, Pedro A Jose, Van Anthony M Villar
The rising prevalence of primary pediatric hypertension and its tracking into adult hypertension point to the importance of determining its pathogenesis to gain insights into its current and emerging management. Considering that the intricate control of BP is governed by a myriad of anatomical, molecular biological, biochemical, and physiological systems, multiple genes are likely to influence an individual's BP and susceptibility to develop hypertension. The long-term regulation of BP rests on renal and non-renal mechanisms...
September 2017: Current Hypertension Reports
https://www.readbyqxmd.com/read/28777914/resveratrol-improves-high-fat-diet-induced-fatty-liver-and-insulin-resistance-by-concomitant-inhibiting-proteolytic-cleavage-of-srebps-ffas-oxidation-and-intestinal-tgs-absorption
#12
Eman F Khaleel, Ghada Ahmed Abdel-Aleem, Dalia Gamal Eldin Mostafa
Resveratrol (RES) has the ability to ameliorate non-alcoholic fatty liver disease (NAFLD) and the mechanism remains unclear. Hence, using high-fat diet (HFD) obese rat model, we investigated the effect of low dose of RES (20 mg/kg) on hepatic Sterol regulatory element-binding proteins (SREBPs)-lipogenesis pathway, enzymes involved in β-oxidation and activity of pancreatic lipase. 4 groups of rats (n=8) of either control (12 % of calories as fat) or HFD (40 % of calories as fat), both were administered with either normal saline as vehicle or RES as a concomitant treatment for 8 weeks on a daily basis, orally...
August 4, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28776958/transgenic-mice-with-ectopic-expression-of-constitutively-active-tlr4-in-adipose-tissues-do-not-show-impaired-insulin-sensitivity
#13
Kikumi D Ono-Moore, Ling Zhao, Shurong Huang, Jeonga Kim, Jennifer M Rutkowsky, Ryan G Snodgrass, Dina A Schneider, Michael J Quon, James L Graham, Peter J Havel, Daniel H Hwang
INTRODUCTION: Chronic low-grade inflammation is associated with obesity and diabetes. However, what causes and mediates chronic inflammation in metabolic disorders is not well understood. Toll-like receptor 4 (TLR4) mediates both infection-induced and sterile inflammation by recognizing pathogen-associated molecular patterns and endogenous molecules, respectively. Saturated fatty acids can activate TLR4, and TLR4-deficient mice were protected from high fat diet (HFD)-induced obesity and insulin resistance, suggesting that TLR4-mediated inflammation may cause metabolic dysfunction, such as obesity and insulin resistance...
August 4, 2017: Immunity, Inflammation and Disease
https://www.readbyqxmd.com/read/28776381/insulin-resistance-and-the-metabolic-syndrome-are-related-to-the-severity-of-steatosis-in-the-pediatric-population-with-obesity
#14
Esther Ubiña-Aznar, Leopoldo Tapia-Ceballos, José Miguel Rosales-Zabal, Rocío Porcel-Chacón, Francisco Poveda-Gómez, Carmen Lozano-Calero, Carmen Ortiz-Cuevas, Francisco Rivas-Ruiz, Andrés Sánchez Cantos, José María Navarro Jarabo
BACKGROUND: To determine the factors associated with an increased risk for severe steatosis (SS) and establish the Homeostatic Model Assessment-Insulin Resistance (HOMA-IR) as a screening tool. METHODS: A cross-sectional study was performed in obese children to assess the relationship between the metabolic syndrome (MetS) and glucose metabolism alterations (GMA) and the risk for severe steatosis. RESULTS: A total of 94 children (51 males) aged from six to 14 years were included...
August 4, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28772334/myocardial-glucose-clearance-by-aspalathin-treatment-in-young-mature-and-obese-insulin-resistant-rats
#15
Sybrand Engelbrecht Smit, Rabia Johnson, Mignon Alberta Van Vuuren, Barbara Huisamen
Rooibos, an indigenous South African plant ingested as herbal tea, is well known for its antioxidant effects. This in vitro study investigated aspalathin (C21H24O11), a dihydrochalcone unique to rooibos, for hypoglycemic effects in the context of age- and obesity-induced insulin resistance and the mechanisms involved. Male Wistar rats were allocated into three groups: 16 - 30 weeks feeding with either standard rat chow or a high-caloric diet, or 6 - 10 weeks feeding with standard rat chow. Ventricular cardiomyocytes were isolated by collagenase perfusion digestion, and glucose uptake was determined by 2-[(3)H]-deoxyglucose accumulation...
August 3, 2017: Planta Medica
https://www.readbyqxmd.com/read/28771628/exploring-factors-related-to-changes-in-body-composition-insulin-sensitivity-and-aerobic-capacity-in-response-to-a-12-week-exercise-intervention-in-overweight-and-obese-women-with-and-without-polycystic-ovary-syndrome
#16
David Scott, Cheryce L Harrison, Samantha Hutchison, Barbora de Courten, Nigel K Stepto
OBJECTIVE: To determine factors associated with differential changes in body fat, insulin resistance and aerobic capacity following a 12-week exercise intervention in overweight and obese women with and without polycystic ovary syndrome (PCOS). METHODS: 16 overweight and obese women (9 PCOS; 7 without PCOS) completed a supervised progressive 12-week exercise program. Primary outcomes included changes in indicators of insulin sensitivity (including glucose infusion rate relative to fat-free mass [GIR/FFM]), body composition, and aerobic capacity (VO2 peak; 12 participants only)...
2017: PloS One
https://www.readbyqxmd.com/read/28771179/leptin-receptor-gene-variant-rs11804091-is-associated-with-bmi-and-insulin-resistance-in-spanish-female-obese-children-a-case-control-study
#17
Josune Olza, Azahara I Rupérez, Mercedes Gil-Campos, Rosaura Leis, Ramón Cañete, Rafael Tojo, Ángel Gil, Concepción M Aguilera
Leptin is an endocrine hormone that has a critical role in body weight homoeostasis and mediates its effects via the leptin receptor (LEPR). Common polymorphisms in the genes coding leptin receptors have been associated with metabolic abnormalities. We assessed the association of 28 LEPR polymorphisms with body mass index (BMI) and their relationship with obesity-related phenotypes, inflammation and cardiovascular disease risk biomarkers. A multicentre case-control study was conducted in 522 children (286 with obesity and 236 with normal-BMI)...
August 3, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28770230/effects-of-exercise-training-and-weight-loss-on-plasma-fetuin-a-levels-and-insulin-sensitivity-in-overweight-older-men
#18
Jacob B Blumenthal, Anna Gitterman, Alice S Ryan, Steven J Prior
Aerobic exercise training and weight loss (AEX+WL) improves insulin sensitivity in overweight adults; however, the underlying pathways are incompletely understood. Fetuin-A, a hepatokine that inhibits insulin signaling, may be involved in the salutary effects of AEX+WL. Therefore, we examined the effects of 6-month AEX+WL on plasma fetuin-A levels (36-48 hours after the last bout of exercise), aerobic capacity (VO2max), body composition, glucose tolerance, and insulin sensitivity (M) in 16 sedentary, overweight-obese older men (age = 60 ± 2 years, BMI = 31 ± 1 kg/m(2)) with no history of cardiovascular disease or diabetes...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28769819/substantial-inter-subject-variability-in-blood-pressure-responses-to-glucose-in-a-healthy-non-obese-population
#19
Cathriona R Monnard, Benoît Fellay, Isabelle Scerri, Erik K Grasser
Aim: A large inter-subject variability in the blood pressure (BP) response to glucose drinks has been reported. However, the underlying factors remain elusive and we hypothesized that accompanying changes in glucose metabolism affect these BP responses. Methods: Cardiovascular and glycemic changes in response to a standard 75 g oral-glucose-tolerance-test were investigated in 30 healthy, non-obese males. Continuous cardiovascular monitoring, including beat-to-beat BP, electrocardiographically deduced heart rate and impedance cardiography, was performed during a 30 min baseline and continued up to 120 min after glucose ingestion...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28769122/modulation-of-gr1-low-monocytes-subset-impacts-insulin-sensitivity-and-weight-gain-upon-high-fat-diet-in-female-mice
#20
S Béliard, W Le Goff, F Saint-Charles, L Poupel, V Deaswerte, L Boucharechas, T Huby, P Lesnik
BACKGROUND/OBJECTIVES: Blood monocytes are expanded during obesity. However, the differential contribution of monocytes subsets in obesity-related metabolic disorders remains unknown. The aim of the study was to define the role of the Gr1(low) monocytes subset upon high-fat-diet (HFD). METHODS: We used transgenic female mouse models allowing the modulation of circulating Gr1(low) monocytes number (decreased number in CX3CR1(-/-) mice, increased number in CD11c-hBcl2 mice) and studied obesity upon HFD...
August 3, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
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