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https://www.readbyqxmd.com/read/29161632/ambient-air-pollution-adipokines-and-glucose-homeostasis-the-framingham-heart-study
#1
Wenyuan Li, Kirsten S Dorans, Elissa H Wilker, Mary B Rice, Itai Kloog, Joel D Schwartz, Petros Koutrakis, Brent A Coull, Diane R Gold, James B Meigs, Caroline S Fox, Murray A Mittleman
OBJECTIVE: To examine associations of proximity to major roadways, sustained exposure to fine particulate matter (PM2.5), and acute exposure to ambient air pollutants with adipokines and measures of glucose homeostasis among participants living in the northeastern United States. METHODS: We included 5958 participants from the Framingham Offspring cohort examination cycle 7 (1998-2001) and 8 (2005-2008) and Third Generation cohort examination cycle 1 (2002-2005) and 2 (2008-2011), who did not have type 2 diabetes at the time of examination visit...
November 18, 2017: Environment International
https://www.readbyqxmd.com/read/29161316/acute-exercise-alters-skeletal-muscle-mitochondrial-respiration-and-h2o2-emission-in-response-to-hyperinsulinemic-euglycemic-clamp-in-middle-aged-obese-men
#2
Adam J Trewin, Itamar Levinger, Lewan Parker, Christopher S Shaw, Fabio R Serpiello, Mitchell J Anderson, Glenn K McConell, David L Hare, Nigel K Stepto
Obesity, sedentary lifestyle and aging are associated with mitochondrial dysfunction and impaired insulin sensitivity. Acute exercise increases insulin sensitivity in skeletal muscle; however, whether mitochondria are involved in these processes remains unclear. The aim of this study was to investigate the effects of insulin stimulation at rest and after acute exercise on skeletal muscle mitochondrial respiratory function (JO2) and hydrogen peroxide emission (JH2O2), and the associations with insulin sensitivity in obese, sedentary men...
2017: PloS One
https://www.readbyqxmd.com/read/29161258/insulin-resistance-and-hyperandrogenism-drive-steatosis-and-fibrosis-risk-in-young-females-with-pcos
#3
Salvatore Petta, Alessandro Ciresi, Jessica Bianco, Vincenzo Geraci, Roberta Boemi, Luigi Galvano, Franco Magliozzo, Giovanni Merlino, Antonio Craxì, Carla Giordano
BACKGROUND AND AIMS: Nonalcoholic fatty liver disease (NAFLD) and polycystic ovary syndrome (PCOS) recognize obesity and insulin resistance (IR) as common pathogenic background. We assessed 1) whether PCOS is a risk factor for steatosis, and 2) the impact, in PCOS patients, of IR and hyperandrogenism on steatosis and fibrosis. METHODS: We considered 202 consecutive Italian PCOS nondiabetic patients and 101 age-matched controls. PCOS was diagnosed applying the Rotterdam diagnostic criteria...
2017: PloS One
https://www.readbyqxmd.com/read/29161233/swimming-but-not-vitamin-e-ameliorates-prothrombotic-state-and-hypofibrinolysis-in-a-rat-model-of-nonalcoholic-fatty-liver-disease
#4
Hussein F Sakr, Amr M Abbas, Mohamed A Haidara
BACKGROUND: Nonalcoholic fatty liver disease (NAFLD) is associated with a systemic procoagulant hypofibrinolysis state that is considered as a risk factor for microangiopathy and peripheral vascular diseases. Swimming exercise ameliorates the metabolic dysfunction in type 2 diabetes. Vitamin E is a natural antioxidant that reduces the risk of endothelial dysfunction in metabolic syndrome. The aim of the present study is to investigate the effect of combined swimming exercise with vitamin E on coagulation as well as blood fibrinolysis markers in rats with NAFLD...
November 21, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/29161075/metabolic-dysregulation-systemic-inflammation-and-pediatric-obesity-related-asthma
#5
Deepa Rastogi, Fernando Holguin
Obesity-related asthma is a distinct pediatric asthma phenotype. It is associated with higher disease burden, lower pulmonary function, and suboptimal response to current asthma medications. Recent studies have made inroads into elucidating its pathophysiology. Systemic immune responses in obese children with asthma are skewed to a nonatopic T-helper cell type 1 (Th1) pattern that correlates with pulmonary function deficits. The prevalence of metabolic dysregulation is also higher among obese children with asthma than among normal-weight children with asthma...
November 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29160922/igf1r-signalling-in-testicular-germ-cell-tumour-cells-impacts-on-cell-survival-and-acquired-cisplatin-resistance
#6
Joanna Selfe, Neil C Goddard, Alan McIntyre, Kathryn R Taylor, Jane Renshaw, Sergey D Popov, Khin Thway, Brenda Summersgill, Robert A Huddart, Duncan C Gilbert, Janet M Shipley
Testicular germ cell tumours (TGCT) are the most frequent malignancy and cause of death from solid tumours in the 20-40 year age group. Although most cases show sensitivity to cis-platinum-based chemotherapy, this is associated with long-term toxicities and chemo-resistance. Roles for receptor tyrosine kinases other than KIT are largely unknown in TGCT. We therefore conducted a phosphoproteomic screen and identified the insulin growth factor receptor-1 (IGF1R) as both highly expressed and activated in TGCT cell lines representing the non-seminomatous subtype...
November 21, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/29160108/effects-of-hepato-preferential-basal-insulin-peglispro-on-nuclear-magnetic-resonance-biomarkers-lipoprotein-insulin-resistance-index-and-glyca-in-patients-with-diabetes
#7
Margery A Connelly, James D Otvos, Qianyi Zhang, Shuyu Zhang, Caryl J Antalis, Annette M Chang, Byron J Hoogwerf
AIM: To characterize the effects of hepato-preferential basal insulin peglispro (BIL) and insulin glargine on insulin resistance (lipoprotein insulin resistance index [LP-IR]) and inflammation (GlycA), and to explore the biological implications. METHODS: This substudy included 847 patients with Type 1 diabetes (T1D) or Type 2 diabetes (T2D) in four cohorts of the BIL development program. LP-IR and GlycA were measured before and after insulin treatment. Correlations between LP-IR, GlycA, clinical parameters and liver biomarkers were assessed...
November 2017: Biomarkers in Medicine
https://www.readbyqxmd.com/read/29160087/glyoxalase-1-modulation-in-obesity-and-diabetes
#8
Naila Rabbani, Paul J Thornalley
SIGNIFICANCE: Obesity and type 2 diabetes mellitus are increasing globally. There is also increasing associated complications, such as non-alcoholic fatty liver disease (NAFLD) and vascular complications of diabetes. There is currently no licensed treatment for NAFLD and no recent treatments for diabetic complications. New approaches are required, particularly addressing mechanism-based risk factors for health decline and disease progression. Recent advances: Dicarbonyl stress is the abnormal accumulation of reactive dicarbonyl metabolites such as methylglyoxal leading to cell and tissue dysfunction...
November 21, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/29160030/dihydromyricetin-enhances-glucose-uptake-by-inhibition-of-mek-erk-pathway-and-consequent-down-regulation-of-phosphorylation-of-ppar%C3%AE-in-3t3-l1-cells
#9
Lei Liu, Min Zhou, Hedong Lang, Yong Zhou, Mantian Mi
Accumulating evidence suggests that inhibition of mitogen-activated protein kinase signalling can reduce phosphorylation of peroxisome proliferator-activated receptor γ (PPARγ) at serine 273, which mitigates obesity-associated insulin resistance and might be a promising treatment for type 2 diabetes. Dihydromyricetin (DHM) is a flavonoid that has many beneficial pharmacological properties. In this study, mouse fibroblast 3T3-L1 cells were used to investigate whether DHM alleviates insulin resistance by inhibiting PPARγ phosphorylation at serine 273 via the MEK/ERK pathway...
November 21, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29159872/the-dark-side-of-glucose-transporters-in-prostate-cancer-are-they-a-new-feature-to-characterize-carcinomas
#10
REVIEW
Pedro Gonzalez-Menendez, David Hevia, Juan C Mayo, Rosa M Sainz
One of the hallmarks of cancer cells is the increased ability to acquire nutrients, particularly glucose and glutamine. Proliferating cells need precursors for cell growth and NADPH reducing equivalents for survival. The principal responsible for glucose uptake is facilitative glucose transporters (GLUTs), which usually are overexpressed in cancer cells. Besides their role in glucose uptake, GLUT transporters are able to transport other compounds such as dehydroascorbic acid or uric acid. They play a major role in tumor progression and cellular processes such as regulated cell death...
November 21, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29159583/the-association-between-artificial-sweeteners-and-obesity
#11
REVIEW
Michelle Pearlman, Jon Obert, Lisa Casey
PURPOSE OF REVIEW: The purpose of this paper is to review the epidemiology of obesity and the evolution of artificial sweeteners; to examine the latest research on the effects of artificial sweeteners on the host microbiome, the gut-brain axis, glucose homeostasis, and energy consumption; and to discuss how all of these changes ultimately contribute to obesity. RECENT FINDINGS: Although artificial sweeteners were developed as a sugar substitute to help reduce insulin resistance and obesity, data in both animal models and humans suggest that the effects of artificial sweeteners may contribute to metabolic syndrome and the obesity epidemic...
November 21, 2017: Current Gastroenterology Reports
https://www.readbyqxmd.com/read/29159396/association-of-nonalcoholic-fatty-liver-disease-with-lower-brain-volume-in-healthy-middle-aged-adults-in-the-framingham-study
#12
Galit Weinstein, Shira Zelber-Sagi, Sarah R Preis, Alexa S Beiser, Charles DeCarli, Elizabeth K Speliotes, Claudia L Satizabal, Ramachandran S Vasan, Sudha Seshadri
Importance: Nonalcoholic fatty liver disease (NAFLD) is a common condition that is most often asymptomatic. It is associated with metabolic syndrome, incident diabetes, carotid atherosclerosis, and endothelial dysfunction, conditions that in turn are strongly linked with brain damage and cognitive impairment. However, it is not known whether NAFLD is associated with structural brain measures in humans. Objective: To assess the association between prevalent NAFLD and brain magnetic resonance imaging (MRI) measures...
November 20, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/29159225/data-on-the-effect-of-mir-15b-on-the-expression-of-insr-in-murine-c2c12-myocytes
#13
Won-Mo Yang, Kyung-Ho Min, Se-Whan Park, Wan Lee
The ectopic expression of miR-15b is linked causally to impaired insulin signaling in human HepG2 hepatocytes through the suppression of INSR (Yang et al., 2015) [1]. In this data article, we further examined the effect of miR-15b on insulin signaling in a murine skeletal muscle cells, C2C12 myocytes. Although the 3'UTR of mouse INSR mRNA has an appropriate binding site for miR-15b based on TargetScan analysis, the ectopic expression of miR-15b did not suppress the expression and insulin-stimulated phosphorylation of insulin signaling intermediates in C2C12 myocytes...
December 2017: Data in Brief
https://www.readbyqxmd.com/read/29159216/data-on-the-decreased-expression-of-foxo1-by-mir-1271-in-hepg2-hepatocytes
#14
Won-Mo Yang, Kyung-Ho Min, Se-Whan Park, Wan Lee
Obesity and metabolic diseases are closely associated with insulin resistance. Obesity-induced miRNAs are also considered to be potential contributors to the development of insulin resistance and type 2 diabetes. Previously, the expression of miR-1271 was reported to be upregulated in the liver of diet-induced obese mice (Yang et al., 2016) [1]. In this data article, multiple in silico analysis predicted FOXO1 gene to be a direct target of miR-1271. Dual luciferase reporter gene analysis showed that miR-1271 suppressed FOXO1 expression by direct binding to 3'UTR...
December 2017: Data in Brief
https://www.readbyqxmd.com/read/29159212/data-on-the-expression-of-pepck-in-hepg2-hepatocytes-transfected-with-mir-195
#15
Won-Mo Yang, Kyung-Ho Min, Se-Whan Park, Wan Lee
Dietary fats rich in saturated fatty acid (SFA) increase the risk of metabolic diseases, and certain microRNAs (miRNAs) dysregulated by SFA are associated with the pathogenesis of insulin resistance and type 2 diabetes. A previous study found that miR-195 is increased by SFA and impairs hepatic insulin signaling through the suppression of INSR (Yang et al., 2014) [1]. This article reports accompanying data to determine the effect of miR-195 on the expression of PEPCK, a key player in hepatic gluconeogenesis...
December 2017: Data in Brief
https://www.readbyqxmd.com/read/29158964/ginsenoside-rk1-bioactivity-a-systematic-review
#16
Abdelrahman Elshafay, Ngo Xuan Tinh, Samar Salman, Yara Saber Shaheen, Eman Bashir Othman, Mohamed Tamer Elhady, Aswin Ratna Kansakar, Linh Tran, Le Van, Kenji Hirayama, Nguyen Tien Huy
Ginsenoside Rk1 (G-Rk1) is a unique component created by processing the ginseng plant (mainly Sung Ginseng (SG)) at high temperatures. The aim of our study was to systematically review the pharmacological effects of G-Rk1. We utilized and manually searched eight databases to select in vivo and in vitro original studies that provided information about biological, pharmaceutical effects of G-Rk1 and were published up to July 2017 with no restriction on language or study design. Out of the 156 papers identified, we retrieved 28 eligible papers in the first skimming phase of research...
2017: PeerJ
https://www.readbyqxmd.com/read/29158827/long-term-effect-of-biomineralized-insulin-nanoparticles-on-type-2-diabetes-treatment
#17
Yun Xiao, Xiaoyu Wang, Ben Wang, Xueyao Liu, Xurong Xu, Ruikang Tang
Intracellular insulin may exhibit a long-term effect in regulating protein synthesis, DNA synthesis, and gene transcription. However, the intracellular delivery of insulin is a great challenge. Here, we describe how a simple biomineralization modification of insulin can transport it into intact cells on a large scale, leading to a long-term therapeutic effect on diabetes mellitus. Using insulin-resistant HepG2 cell and diabetic KKAy mice as models, in vitro and in vivo assessments have demonstrated that biomineralized insulin nanoparticles can trigger glucose metabolism, and this improvement extends after the treatment...
2017: Theranostics
https://www.readbyqxmd.com/read/29158735/correlation-between-insulin-resistance-and-thyroid-nodule-in-type-2-diabetes-mellitus
#18
Yunzhao Tang, Tiantian Yan, Gang Wang, Yijun Chen, Yanjuan Zhu, Zhenhuan Jiang, Min Yang, Chenguang Li, Zhu Li, Ping Yu, Shanshan Wang, Nannan Zhu, Qiuyue Ren, Changlin Ni
Objective: The present study explored the association between insulin resistance (IR) and the clinical characteristics of thyroid nodules in patients with type 2 diabetes mellitus (T2DM). Methods: All the patients were newly diagnosed with T2DM. 201 patients with thyroid nodule disease and 308 patients without the nodular thyroid disease. The participants were evaluated by relevant examination. Correlation analyses and regression analyses were performed to examine the relationships between the two groups...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/29158535/the-triglycerides-and-glucose-index-rather-than-homa-ir-is-more-associated-with-hypogonadism-in-chinese-men
#19
Kun Zhang, Yi Chen, Lijie Liu, Meng Lu, Jing Cheng, Fengbin Gao, Ningjian Wang, Zhoujun Shen, Yingli Lu
Previous studies have reported that insulin resistant and low testosterone are related. The triglyceride and glucose index (TyG) well mirrors insulin sensitivity. No study investigated the application of TyG in male hypogonadism. We aimed to explore whether TyG was associated with hypogonadism, and also evaluate the ability of TyG compared to HOMA-IR as a possible hypogonadism predictor. A total of 4299 male subjects were enrolled from 22 sites in East China. Hypogonadism was defined as total testosterone <11...
November 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29158249/objectively-measured-physical-activity-and-sedentary-time-are-associated-with-cardiometabolic-risk-factors-in-adults-with-prediabetes-the-preview-study
#20
Nils Swindell, Kelly Mackintosh, Melitta McNarry, Jeffrey W Stephens, Diewertje Sluik, Mikael Fogelholm, Mathijs Drummen, Ian MacDonald, J Alfredo Martinez, Teodora Handjieva-Darlenska, Sally D Poppitt, Jennie Brand-Miller, Thomas M Larsen, Anne Raben, Gareth Stratton
OBJECTIVE: The aim of the present cross-sectional study was to examine the association among physical activity (PA), sedentary time (ST), and cardiometabolic risk in adults with prediabetes. RESEARCH DESIGN AND METHODS: Participants (n = 2,326; 25-70 years old, 67% female) from eight countries, with a BMI >25 kg ⋅ m(-2) and impaired fasting glucose (5.6-6.9 mmol ⋅ L(-1)) or impaired glucose tolerance (7.8-11.0 mmol ⋅ L(-1) at 2 h), participated. Seven-day accelerometry objectively assessed PA levels and ST...
November 20, 2017: Diabetes Care
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