Mechanisms Underlying Absent Training-Induced Improvement in Insulin Action in Lean, Hyperandrogenic Women With Polycystic Ovary Syndrome.

abstract：:Glucose metabolism affects most major signal pathways in pancreatic beta-cells. Multiple protein kinases, including protein kinase C (PKC) isoenzymes, are involved in these effects; however, their role is poorly defined. Moreover, the dynamics of kinase isoenzyme activation in reference to the biphasic insulin secreti...

journal_title：Diabetes

authors： Warwar N,Efendic S,Ostenson CG,Haber EP,Cerasi E,Nesher R

更新日期：2006-03-01 00:00:00

abstract：:NO has been identified recently as the prime islet-toxic product of inflammatory macrophages. The adverse effects of IL-1 on isolated islets also have been reported to involve NO. We now show that exposure of an islet cell suspension to the NO donor nitroprusside or to activated macrophages leads to DNA strand breaks....

journal_title：Diabetes

authors： Fehsel K,Jalowy A,Qi S,Burkart V,Hartmann B,Kolb H

更新日期：1993-03-01 00:00:00

abstract：:In diabetic patients, elevated plasma levels of t-PA and PAI-1 accompany impaired fibrinolysis. To identify mechanisms for these abnormalities, we examined whether vascular endothelial cells exposed to high glucose upregulate t-PA and PAI-1 production and whether ambient PA activity is decreased concomitantly. In 17 c...

journal_title：Diabetes

authors： Maiello M,Boeri D,Podesta F,Cagliero E,Vichi M,Odetti P,Adezati L,Lorenzi M

更新日期：1992-08-01 00:00:00

abstract：OBJECTIVE:Insulin resistance and other features of the metabolic syndrome have been causally linked to adipose tissue macrophages (ATMs) in mice with diet-induced obesity. We aimed to characterize macrophage phenotype and function in human subcutaneous and omental adipose tissue in relation to insulin resistance in obe...

journal_title：Diabetes

authors： Wentworth JM,Naselli G,Brown WA,Doyle L,Phipson B,Smyth GK,Wabitsch M,O'Brien PE,Harrison LC

更新日期：2010-07-01 00:00:00

abstract：:In nonobese diabetic (NOD) mice, a deficiency in the number and function of invariant natural killer T-cells (iNKT cells) contributes to the onset of type 1 diabetes. The activation of CD1d-restricted iNKT cells by alpha-galactosylceramide (alpha-GalCer) corrects these deficiencies and protects against spontaneous and...

journal_title：Diabetes

authors： Mi QS,Ly D,Zucker P,McGarry M,Delovitch TL

更新日期：2004-05-01 00:00:00

abstract：:Glucokinase from rat liver or transplantable, radiation-induced insulinomas was partially purified by ion exchange chromatography using DEAE-Cibacron Blue F3GA agarose. Phosphorylation of alpha,beta-D-mannose by glucokinase occurred with cooperative rate dependence on mannose concentration (nH: 1.50). Half-maximal pho...

journal_title：Diabetes

authors： Meglasson MD,Schinco M,Matschinsky FM

更新日期：1983-12-01 00:00:00

abstract：:The antidiabetic thiazolidinediones, which include troglitazone and rosiglitazone, are ligands for the nuclear receptor peroxisome proliferator-activated receptor (PPAR)-gamma and exert their antihyperglycemic effects by regulation of PPAR-gamma-responsive genes. We report here that PPAR-gamma activation by troglitazo...

journal_title：Diabetes

authors： Camp HS,Li O,Wise SC,Hong YH,Frankowski CL,Shen X,Vanbogelen R,Leff T

更新日期：2000-04-01 00:00:00

abstract：:Insulin receptors from rat hepatoma cells (Fao) and human placenta were partially purified by detergent solubilization and lectin purification. The insulin receptor preparations were subjected to sodium dodecyl sulfate (SDS) polyacrylamide gel electrophoresis under reducing or nonreducing conditions. The proteins were...

journal_title：Diabetes

authors： Maron R,Kahn CR,Jacobs S,Fujita-Yamaguchi Y

更新日期：1984-10-01 00:00:00

abstract：:Segmental pancreatic allografts with unligated ducts were transplanted intraperitoneally to five diabetic patients who had received renal allografts more than 2 yr earlier. One patient is alive with a functioning graft 10.5 mo later. Two patients rejected their grafts at approximately 2 and 3 mo but are alive 8--9 mo ...

journal_title：Diabetes

authors： Sutherland DE,Goetz FC,Najarian JS

更新日期：1980-01-01 00:00:00

abstract：:Perifused islets from rats infused for 7 days with 40% glucose exhibited an altered secretory response to selected stimuli. Both phases of insulin release were blunted when 20 mM L-leucine was tested; the secretory response to a subsequent leucine stimulation was also blunted compared with the control group. The abili...

journal_title：Diabetes

authors： Bedoya FJ,Jeanrenaud B

更新日期：1991-01-01 00:00:00

abstract：:Glucose sensing is essential for the ability of pancreatic beta-cells to produce insulin in sufficient quantities to maintain blood glucose within the normal range. Stress causes the release of adrenergic hormones that increase circulating glucose by promoting glucose production and inhibiting insulin release. We have...

journal_title：Diabetes

authors： Gibson TB,Lawrence MC,Gibson CJ,Vanderbilt CA,McGlynn K,Arnette D,Chen W,Collins J,Naziruddin B,Levy MF,Ehrlich BE,Cobb MH

更新日期：2006-04-01 00:00:00

abstract：OBJECTIVE:Chronic pancreatitis, characterized by pancreatic exocrine tissue destruction with initial maintenance of islets, eventually leads to insulin-dependent diabetes in most patients. Mice deficient for the transcription factors E2F1 and E2F2 suffer from a chronic pancreatitis-like syndrome and become diabetic. Su...

journal_title：Diabetes

authors： Tessem JS,Jensen JN,Pelli H,Dai XM,Zong XH,Stanley ER,Jensen J,DeGregori J

更新日期：2008-06-01 00:00:00

abstract：:Little is known about the molecular mechanisms underlying age-dependent deterioration in β-cell function. We now demonstrate that age-dependent impairment in insulin release, and thereby glucose homeostasis, is associated with subtle changes in Ca(2+) dynamics in mouse β-cells. We show that these changes are likely to...

journal_title：Diabetes

authors： Li L,Trifunovic A,Köhler M,Wang Y,Petrovic Berglund J,Illies C,Juntti-Berggren L,Larsson NG,Berggren PO

更新日期：2014-12-01 00:00:00

abstract：:We explored the role of reactive oxygen species (ROS) in the pathogenesis of muscle insulin resistance. We assessed insulin action in vivo with a hyperinsulinemic-euglycemic clamp in mice expressing a mitochondrial-targeted catalase (MCAT) that were fed regular chow (RC) or a high-fat diet (HFD) or underwent an acute ...

journal_title：Diabetes

authors： Lee HY,Lee JS,Alves T,Ladiges W,Rabinovitch PS,Jurczak MJ,Choi CS,Shulman GI,Samuel VT

更新日期：2017-08-01 00:00:00

abstract：:Three hundred and seventy-seven children and adolescents aged 5-17 yr from the biracial (black-white) community of Bogalusa, Louisiana, were evaluated for Tanner stage of sexual development, plasma glucose, and insulin levels during an oral glucose tolerance test. Children of the two races were of similar age, weight,...

journal_title：Diabetes

authors： Svec F,Nastasi K,Hilton C,Bao W,Srinivasan SR,Berenson GS

更新日期：1992-03-01 00:00:00

abstract：:Diabetes-induced oxidative stress can lead to protein misfolding and degradation by the ubiquitin-proteasome system. This study examined protein ubiquitination in pancreatic sections from Zucker diabetic fatty rats. We observed large aggregates of ubiquitinated proteins (Ub-proteins) in insulin-expressing beta-cells a...

journal_title：Diabetes

authors： Kaniuk NA,Kiraly M,Bates H,Vranic M,Volchuk A,Brumell JH

更新日期：2007-04-01 00:00:00

abstract：:To establish potential effects of glucagon-like peptide I (GLP-I) on blood glucose control in insulin-deficient states, GLP-I [GLP-I(7-36) amide; 10 pmol x kg(-1) x min(-1)] was infused intravenously in six fasting, canine C-peptide-negative, chronically diabetic dogs for 8 h. Blood samples were saved for the analysis...

journal_title：Diabetes

authors： Freyse EJ,Becher T,El-Hag O,Knospe S,Göke B,Fischer U

更新日期：1997-05-01 00:00:00

abstract：:Representative longitudinal muscle strips (6 x 10 mm) from distal small intestine were obtained from rats after 1, 2, and 3 mo of streptozocin-induced diabetes. The strips were stretched to their optimum lengths and subjected to electrical field stimulation (1-ms pulse duration, 30-270 mA, 10 Hz) in the presence of Kr...

journal_title：Diabetes

authors： Nowak TV,Harrington B,Kalbfleisch J

更新日期：1990-08-01 00:00:00

abstract：:This study investigated how maternal overnutrition and obesity regulate expression and activation of proteins that facilitate lipid transport in the placenta. To create a maternal overnutrition and obesity model, primiparous C57BL/6 mice were fed a high-fat (HF) diet throughout gestation. Fetuses from HF-fed dams had ...

journal_title：Diabetes

authors： Qiao L,Guo Z,Bosco C,Guidotti S,Wang Y,Wang M,Parast M,Schaack J,Hay WW Jr,Moore TR,Shao J

更新日期：2015-09-01 00:00:00

abstract：:Recently, a new stage in glucose tolerance, impaired fasting glucose (IFG) (fasting plasma glucose level of 6.1-6.9 mmol/l), was introduced in addition to impaired glucose tolerance (IGT) (2-h glucose level of 7.8-11.0 mmol/l). It is not clear whether IFG and IGT differ with respect to insulin secretion or sensitivity...

journal_title：Diabetes

authors： Tripathy D,Carlsson M,Almgren P,Isomaa B,Taskinen MR,Tuomi T,Groop LC

更新日期：2000-06-01 00:00:00

abstract：:Type 1 diabetes is preceded by islet β-cell dysfunction, but the mechanisms leading to β-cell dysfunction have not been rigorously studied. Because immune cell infiltration occurs prior to overt diabetes, we hypothesized that activation of inflammatory cascades and appearance of endoplasmic reticulum (ER) stress in β-...

journal_title：Diabetes

authors： Tersey SA,Nishiki Y,Templin AT,Cabrera SM,Stull ND,Colvin SC,Evans-Molina C,Rickus JL,Maier B,Mirmira RG

更新日期：2012-04-01 00:00:00

abstract：:Recent evidence highlights the therapeutic potential of peroxisome proliferator-activated receptor-δ (PPARδ) agonists to increase insulin sensitivity in diabetes. However, the role of PPARδ in regulating vascular function is incompletely characterized. We investigate whether PPARδ activation improves endothelial funct...

journal_title：Diabetes

authors： Tian XY,Wong WT,Wang N,Lu Y,Cheang WS,Liu J,Liu L,Liu Y,Lee SS,Chen ZY,Cooke JP,Yao X,Huang Y

更新日期：2012-12-01 00:00:00

abstract：OBJECTIVE:Insulin resistance in skeletal muscle is a major risk factor for type 2 diabetes in women with polycystic ovary syndrome (PCOS). However, the molecular mechanisms underlying skeletal muscle insulin resistance and the insulin-sensitizing effect of thiazolidinediones in PCOS in vivo are less well characterized....

journal_title：Diabetes

authors： Højlund K,Glintborg D,Andersen NR,Birk JB,Treebak JT,Frøsig C,Beck-Nielsen H,Wojtaszewski JF

更新日期：2008-02-01 00:00:00

abstract：:Vascular complications are the leading causes of morbidity and mortality in diabetic patients. The contribution of platelets to thromboembolic complications is well documented, but their involvement in the initiation of the atherosclerotic process is of rising interest. Thus, the aim of the present study was to evalua...

journal_title：Diabetes

authors： Véricel E,Januel C,Carreras M,Moulin P,Lagarde M

更新日期：2004-04-01 00:00:00

abstract：:Repeated large-volume blood withdrawals started at a young age previously appeared to correct lymphopenia and prevent diabetes in Ottawa diabetes-prone BB (BBdp) rats. Therefore, we sought an early effect 24 h after withdrawal of 25% of estimated blood volume and then reexamined the long-term effects in BBdp rats. The...

journal_title：Diabetes

authors： Marliss EB,Métroz-Dayer MD,Montambault M,Faucher M,Grose M

更新日期：1990-09-01 00:00:00

abstract：:Diabetes complications are caused by hyperglycemia. Hyperglycemia results in increased concentrations of glucose degradation products. The study of peritoneal dialysis solution biocompatibility has highlighted the adverse effects of glucose degradation products. Recently, 3,4-dideoxyglucosone-3-ene (3,4-DGE) has been ...

journal_title：Diabetes

authors： Justo P,Sanz AB,Egido J,Ortiz A

更新日期：2005-08-01 00:00:00

abstract：:NADPH facilitates glucose-stimulated insulin secretion (GSIS) in pancreatic islets (PIs) of β-cells through an as yet unknown mechanism. We found NADPH oxidase isoform 4 (NOX4) to be the main producer of cytosolic H2O2, which is essential for GSIS; an increase in ATP alone was insufficient for GSIS. The fast GSIS phas...

journal_title：Diabetes

authors： Plecitá-Hlavatá L,Jabůrek M,Holendová B,Tauber J,Pavluch V,Berková Z,Cahová M,Schröder K,Brandes RP,Siemen D,Ježek P

更新日期：2020-07-01 00:00:00

abstract：:Previously studied inhibitors of aldose reductase were largely from two chemical classes, spirosuccinamide/hydantoins and carboxylic acids. Each class has its own drawbacks regarding selectivity, in vivo potency, and human safety; as a result, the pathogenic role of aldose reductase in diabetic retinopathy remains con...

journal_title：Diabetes

authors： Sun W,Oates PJ,Coutcher JB,Gerhardinger C,Lorenzi M

更新日期：2006-10-01 00:00:00

abstract：:Diabetic nephropathy is characterized by hypertension and a relentless decline in kidney function. Angiotensin-converting enzyme inhibitors have been claimed to preserve kidney function better than an equal blood pressure (BP) reduction with conventional antihypertensive treatment (renoprotection). We compared the eff...

journal_title：Diabetes

authors： Nielsen FS,Rossing P,Gall MA,Skøtt P,Smidt UM,Parving HH

更新日期：1994-09-01 00:00:00

abstract：:Alterations in dopaminergic circuitry play a critical role in food reward and may contribute to susceptibility to obesity. Ingestion of sweets releases dopamine in striatum, and both sweet preferences and striatal D2 receptors (D2R) decline with age and may be altered in obesity. Understanding the relationships betwee...

journal_title：Diabetes

authors： Pepino MY,Eisenstein SA,Bischoff AN,Klein S,Moerlein SM,Perlmutter JS,Black KJ,Hershey T

更新日期：2016-09-01 00:00:00