Does the glucose-dependent insulin secretion mechanism itself cause oxidative stress in pancreatic beta-cells?

abstract：:Optimal immune-based therapies for type 1 diabetes (T1D) should restore self-tolerance without inducing chronic immunosuppression. CD4+Foxp3+ regulatory T cells (Tregs) are a key cell population capable of facilitating durable immune tolerance. However, clinical trials with expanded Tregs in T1D and solid-organ transp...

journal_title：Diabetes

authors： Cabello-Kindelan C,Mackey S,Sands A,Rodriguez J,Vazquez C,Pugliese A,Bayer AL

更新日期：2020-02-01 00:00:00

abstract：:AMPK is a widely expressed intracellular energy sensor that monitors and modulates energy expenditure. Transient receptor potential ankyrin 1 (TRPA1) channel is a widely recognized chemical and thermal sensor that plays vital roles in pain transduction. In this study, we discovered a functional link between AMPK and T...

journal_title：Diabetes

authors： Wang S,Kobayashi K,Kogure Y,Yamanaka H,Yamamoto S,Yagi H,Noguchi K,Dai Y

更新日期：2018-01-01 00:00:00

abstract：OBJECTIVE:To investigate if recurrent autoimmunity explained hyperglycemia and C-peptide loss in three immunosuppressed simultaneous pancreas-kidney (SPK) transplant recipients. RESEARCH DESIGN AND METHODS:We monitored autoantibodies and autoreactive T-cells (using tetramers) and performed biopsy. The function of auto...

journal_title：Diabetes

authors： Vendrame F,Pileggi A,Laughlin E,Allende G,Martin-Pagola A,Molano RD,Diamantopoulos S,Standifer N,Geubtner K,Falk BA,Ichii H,Takahashi H,Snowhite I,Chen Z,Mendez A,Chen L,Sageshima J,Ruiz P,Ciancio G,Ricordi C,Reij

更新日期：2010-04-01 00:00:00

abstract：:A simple method for the elimination of labile glycohemoglobin in the chromatographic quantitation of glycosylated hemoglobin is described. Use is made of the instability of Schiff base adducts in acidic solution. Erythrocytes are lysed with a pH 5 buffer. At this pH dissociation reaches completion during sample prepar...

journal_title：Diabetes

authors： Bissé E,Berger W,Flückiger R

更新日期：1982-07-01 00:00:00

abstract：:To test the general applicability of the hypothesis that diabetes mellitus causes increased polyol pathway activity, decreased tissue free myo-inositol, and resultant pathological changes in tissues susceptible to the ravages of diabetes, we measured glucose, sorbitol, and myo-inositol with quantitative histochemical ...

journal_title：Diabetes

authors： Loy A,Lurie KG,Ghosh A,Wilson JM,MacGregor LC,Matschinsky FM

更新日期：1990-10-01 00:00:00

abstract：:Nerve regeneration in diabetic animals is delayed and qualitatively impaired, but the mechanisms responsible for these defects have not been elucidated. The extracellular matrix protein laminin promotes the extension of neuronal processes, and recent studies have localized neurite-promoting activity to a lysine-contai...

journal_title：Diabetes

authors： Federoff HJ,Lawrence D,Brownlee M

更新日期：1993-04-01 00:00:00

abstract：:Detailed pathophysiological manifestations of early disease in the context of prediabetes are poorly understood. This study aimed to evaluate the extent of early signs of metabolic and cardio-cerebrovascular complications affecting multiple organs in individuals with prediabetes. Subjects without a history of stroke, ...

journal_title：Diabetes

authors： Bamberg F,Hetterich H,Rospleszcz S,Lorbeer R,Auweter SD,Schlett CL,Schafnitzel A,Bayerl C,Schindler A,Saam T,Müller-Peltzer K,Sommer W,Zitzelsberger T,Machann J,Ingrisch M,Selder S,Rathmann W,Heier M,Linkohr B,Meisi

更新日期：2017-01-01 00:00:00

abstract：:Fibroblast growth factor 21 (FGF21) is increasingly recognized as an important metabolic regulator of glucose homeostasis. Here, we conducted an exome-chip association analysis by genotyping 5,169 Chinese individuals from a community-based cohort and two clinic-based cohorts. A custom Asian exome-chip was used to dete...

journal_title：Diabetes

authors： Cheung CYY,Tang CS,Xu A,Lee CH,Au KW,Xu L,Fong CHY,Kwok KHM,Chow WS,Woo YC,Yuen MMA,Cherny SS,Hai J,Cheung BMY,Tan KCB,Lam TH,Tse HF,Sham PC,Lam KSL

更新日期：2017-06-01 00:00:00

abstract：:Evidence in rodents suggests that islet pretreatment to reduce islet immunogenicity will also require some form of immunosuppression of the recipient for islet allograft acceptance in highly reactive donor-recipient pairs. We attempted to ascertain whether outbred dogs would also require treatment of both donor islets...

journal_title：Diabetes

authors： Alejandro R,Latif Z,Noel J,Shienvold FL,Mintz DH

更新日期：1987-03-01 00:00:00

abstract：:Arterial stiffness affects cardiac functions, peripheral circulation, and cardiovascular mortality. We examined whether arterial stiffness in different regions is equally affected by diabetes and other factors. The subjects were 161 patients with type 2 diabetes and 129 healthy subjects comparable in age and sex. Arte...

journal_title：Diabetes

authors： Kimoto E,Shoji T,Shinohara K,Inaba M,Okuno Y,Miki T,Koyama H,Emoto M,Nishizawa Y

更新日期：2003-02-01 00:00:00

abstract：:Diabetes is characterized by altered metabolism of key molecules and regulatory pathways. The phenotypic expression of diabetes and associated complications encompasses complex interactions between genetic, environmental, and tissue-specific factors that require an integrated understanding of perturbations in the netw...

journal_title：Diabetes

authors： Sas KM,Karnovsky A,Michailidis G,Pennathur S

更新日期：2015-03-01 00:00:00

abstract：:In early 1988, a colony of GK rats was started in Paris with progenitors issued from F35 of the original colony reported by Goto and Kakisaki. When studied longitudinally up to 8 mo, GK rats showed as early as 1 mo (weaning) significantly higher basal plasma glucose (9 mM) and insulin levels (doubled), altered glucose...

journal_title：Diabetes

authors： Portha B,Serradas P,Bailbé D,Suzuki K,Goto Y,Giroix MH

更新日期：1991-04-01 00:00:00

abstract：:The inhibitory action of insulin and proinsulin on basal and glucagon-activated glycogenolysis was studied in cultured rat hepatocytes containing [14C]glycogen. Insulin or proinsulin given as sole hormones in the presence of 5 mM glucose decreased basal release of [14C]glucose from [14C]glycogen to 20%. Half-maximal e...

journal_title：Diabetes

authors： Hartmann H,Probst I,Jungermann K,Creutzfeldt W

更新日期：1987-05-01 00:00:00

abstract：:This study examined the role of p38 mitogen-activated protein (MAP) kinase in transducing high glucose into deficits in nerve conduction velocity (NCV) that are characteristic of diabetic neuropathy. p38 activation and NCV were measured in streptozocin-induced diabetic rats treated with a p38 inhibitor, an aldose redu...

journal_title：Diabetes

authors： Price SA,Agthong S,Middlemas AB,Tomlinson DR

更新日期：2004-07-01 00:00:00

abstract：:Studies were conducted to clarify the relationship between the external fatty acid concentration and glucagon in the regulation of hepatic fatty acid metabolism. Hepatocytes from fed rats were incubated with increasing concentrations of oleate (up to 1 mM) in the presence and absence of glucagon and the time sequence ...

journal_title：Diabetes

authors： McGarry JD,Foster DW

更新日期：1980-03-01 00:00:00

abstract：:RT6 is a glycosyl-phosphatidylinositol-linked surface molecule present on most mature rat T-cells. RT6+ T-cells can prevent the expression of autoimmune diabetes in the BB rat, but the mechanism is unknown. Because cross-linking of other glycosyl-phosphatidylinositol-linked T-cell proteins is known to activate T-cells...

journal_title：Diabetes

authors： Rigby MR,Bortell R,Greiner DL,Czech MP,Klarlund JK,Mordes JP,Rossini AA

更新日期：1996-10-01 00:00:00

abstract：:The effect of maternal diabetes on teratogenesis was examined utilizing female Chinese hamsters with typical diabetic symptoms from our closed colony (CHA) and F13-F19 of the brother-sister mating generations of a diabetic strain (CHAD). Both groups were mated with nondiabetic males from CHA. Embryologic studies on da...

journal_title：Diabetes

authors： Funaki K,Mikamo K

更新日期：1983-07-01 00:00:00

abstract：:We studied the cross-sectional relationship between HbA1c and cardiovascular disease (CVD) in the survivors of the original cohort of the Framingham Heart Study (n = 1045). HbA1c was significantly related to prevalent CVD among women but not men. HbA1c was also related to hypertension and to the ratio of total to high...

journal_title：Diabetes

authors： Singer DE,Nathan DM,Anderson KM,Wilson PW,Evans JC

更新日期：1992-02-01 00:00:00

abstract：:The objective of the study was to examine the potential differential effect of insulin and acipimox (both of which reduce free fatty acid [FFA] availability) on VLDL apolipoprotein (apo) B metabolism. We studied eight healthy men (age 40 +/- 4 years, BMI 25.8 +/- 0.9 kg/m2, plasma triglycerides 1.30 +/- 0.12 mmol/l) a...

journal_title：Diabetes

authors： Malmström R,Packard CJ,Caslake M,Bedford D,Stewart P,Yki-Järvinen H,Shepherd J,Taskinen MR

更新日期：1998-05-01 00:00:00

abstract：:One of the unique features of beta-cells is their relatively low expression of many antioxidant enzymes. This could render beta-cells susceptible to oxidative damage but may also provide a system that is sensitive to reactive oxygen species as signals. In isolated mouse islets and INS-1(832/13) cells, glucose increase...

journal_title：Diabetes

authors： Pi J,Bai Y,Zhang Q,Wong V,Floering LM,Daniel K,Reece JM,Deeney JT,Andersen ME,Corkey BE,Collins S

更新日期：2007-07-01 00:00:00

abstract：:Aldose reductase (AR) was purified from rat seminal vesicles. Specific antibodies to this enzyme were prepared in rabbits and were used in the unlabeled antibody-enzyme (PAP) technique to localize AR in a number of tissues known to be sites of diabetic lesions. AR was localized in the following structures in the eye: ...

journal_title：Diabetes

authors： Ludvigson MA,Sorenson RL

更新日期：1980-06-01 00:00:00

abstract：:Both the coding and control regions of mitochondrial DNA (mtDNA) play roles in the generation of diabetes; however, no studies have thoroughly reported on the combined diabetogenic effects of variants in the two regions. We determined the mitochondrial haplogroup and the mtDNA sequence of the control region in 859 sub...

journal_title：Diabetes

authors： Liou CW,Chen JB,Tiao MM,Weng SW,Huang TL,Chuang JH,Chen SD,Chuang YC,Lee WC,Lin TK,Wang PW

更新日期：2012-10-01 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：:The association between clinical autonomic dysfunction and myocardial MIBG accumulation was investigated. The study groups comprised 6 male diabetic patients with autonomic neuropathy (ANP+ group), 6 male diabetic patients without autonomic neuropathy (ANP-group), and 6 male nondiabetic control subjects. The mean age ...

journal_title：Diabetes

authors： Mäntysaari M,Kuikka J,Mustonen J,Tahvanainen K,Vanninen E,Länsimies E,Uusitupa M

更新日期：1992-09-01 00:00:00

abstract：:The gene for insulin-degrading enzyme (IDE) represents a strong positional and biological candidate for type 2 diabetes susceptibility. IDE maps to chromosome 10q23.3, a region linked to diabetes in several populations; the rat homolog has been directly implicated in diabetes susceptibility; and known functions of IDE...

journal_title：Diabetes

authors： Groves CJ,Wiltshire S,Smedley D,Owen KR,Frayling TM,Walker M,Hitman GA,Levy JC,O'Rahilly S,Menzel S,Hattersley AT,McCarthy MI

更新日期：2003-05-01 00:00:00

abstract：:We assessed our speculation that 2-cyclohexen-1-one (CHX) impairs glucose-induced insulin secretion through inactivation of glucokinase. Treatment of pancreatic islets with CHX at concentrations (0-5 mM) that caused a dose-dependent inactivation of glucokinase activity similarly inhibited glucose-induced insulin secre...

journal_title：Diabetes

authors： Miwa I,Murata T,Mitsuyama S,Okuda J

更新日期：1990-10-01 00:00:00

abstract：:Insulin resistance and type 2 diabetes are associated with elevated circulating levels of insulin, nonesterified fatty acids (NEFAs), and lipoprotein remnants. Extracellular matrix proteoglycan (PG) alterations are also common in macro- and microvascular complications of type 2 diabetes. In liver, extracellular hepara...

journal_title：Diabetes

authors： Olsson U,Egnell AC,Lee MR,Lundén GO,Lorentzon M,Salmivirta M,Bondjers G,Camejo G

更新日期：2001-09-01 00:00:00

abstract：:Embryo-culture techniques were used to study the effects of exposure to glucose-deficient culture media on rat embryos during organogenesis. Embryos and their extraembryonic membranes (explants) were cultured either in control media or in media with low or very low glucose concentrations. At the start of the culture t...

journal_title：Diabetes

authors： Ellington SK

更新日期：1987-12-01 00:00:00

abstract：:Sera from rats inoculated with in vitro glucosylated rat skin acid-soluble collagen were evaluated for specific antibody response using the enzyme-linked immunosorbent assay. The data indicate that the altered protein is capable of eliciting the production of antibodies, but unmodified collagen is not. The specificity...

journal_title：Diabetes

authors： Bassiouny AR,Rosenberg H,McDonald TL

更新日期：1983-12-01 00:00:00

abstract：:Myo-Inositol depletion as a result of hyperglycemia is considered one of the leading contributors to chronic diabetic complications. We investigated the possible mechanisms through which elevated extracellular glucose levels affect the loss of intracellular myo-inositol in rat lens. Short-term incubation (up to 4 h) i...

journal_title：Diabetes

authors： Mistry KP,Beyer-Mears A,Diecke FP

更新日期：1993-12-01 00:00:00