Inhibitory effects of leptin on pancreatic alpha-cell function.

abstract：:Glucagon-like peptide 1 receptor (GLP-1R) imaging with radiolabeled exendin has proven to be a powerful tool to quantify β-cell mass (BCM) in vivo. As GLP-1R expression is thought to be influenced by glycemic control, we examined the effect of blood glucose (BG) levels on GLP-1R-mediated exendin uptake in both murine ...

journal_title：Diabetes

authors： Buitinga M,Cohrs CM,Eter WA,Claessens-Joosten L,Frielink C,Bos D,Sandker G,Brom M,Speier S,Gotthardt M

更新日期：2020-11-01 00:00:00

abstract：:Nonhuman primate models of gestational diabetes have produced fetopathies most similar to those of the human infant of the mother with gestational diabetes (IGDM). Fetal hyperglycemia, hyperinsulinemia, macrosomia, selective organomegaly, intrauterine death, and placental hyperplasia are hallmarks of the fetopathy of ...

journal_title：Diabetes

authors： Susa JB,Schwartz R

更新日期：1985-06-01 00:00:00

abstract：:Some of the actions of leptin depend on cholecystokinin (CCK). However, it is unknown whether leptin modulates the release of CCK. Here, we demonstrate in vitro that leptin induces the phosphorylation of extracellular signal-related kinase (ERK)-1/2 proteins and increases CCK release (EC(50) = 0.23 nmol/l) in CCK-secr...

journal_title：Diabetes

authors： Guilmeau S,Buyse M,Tsocas A,Laigneau JP,Bado A

更新日期：2003-07-01 00:00:00

abstract：:The strategy of positional cloning has been highly successful in identifying a number of single gene disorders that exhibit clear Mendelian patterns of inheritance. Positional cloning of insulin-dependent diabetes mellitus (IDDM) has been assisted by the expansion of molecular genetic tools and highly informative mark...

journal_title：Diabetes

authors： Rich SS

更新日期：1995-02-01 00:00:00

abstract：:The adipocyte hormone adiponectin is negatively correlated with obesity and insulin resistance and may exert an important antidiabetes function. In this study, primary human skeletal muscle cells were cocultured with human fat cells or incubated with adipocyte-conditioned medium in the presence or absence of the globu...

journal_title：Diabetes

authors： Dietze-Schroeder D,Sell H,Uhlig M,Koenen M,Eckel J

更新日期：2005-07-01 00:00:00

abstract：:Our aim was to isolate and determine the contribution of partial pancreatectomy, systemic delivery of pancreatic hormones, and duct obliteration to glucose regulation after segmental pancreas transplantation in dogs. Fasting, postprandial, and intravenous glucose-stimulated glucose, insulin, glucagon, pancreatic polyp...

journal_title：Diabetes

authors： van der Burg MP,Gooszen HG,Guicherit OR,Jansen JB,Frölich M,van Haastert FA,Lamers CB

更新日期：1989-09-01 00:00:00

abstract：:Irs2-deficient mice develop type 2-like diabetes due to a reduction in β-cell mass and a failure of pancreatic islets to undergo compensatory hyperplasia in response to insulin resistance. In order to define the molecular mechanisms, we knocked down Irs2 gene expression in mouse MIN6 insulinoma cells. Insulin receptor...

journal_title：Diabetes

authors： Ren D,Sun J,Mao L,Ye H,Polonsky KS

更新日期：2014-10-01 00:00:00

abstract：:Liver X receptors (LXRs) are important regulators of cholesterol and lipid metabolism and are also involved in glucose metabolism. However, the functional role of LXRs in human skeletal muscle is at present unknown. This study demonstrates that chronic ligand activation of LXRs by a synthetic LXR agonist increases the...

journal_title：Diabetes

authors： Kase ET,Wensaas AJ,Aas V,Højlund K,Levin K,Thoresen GH,Beck-Nielsen H,Rustan AC,Gaster M

更新日期：2005-04-01 00:00:00

abstract：:Activation of the sympathetic nervous system (SNS) constitutes a putative mechanism of obesity-induced insulin resistance. Thus, we hypothesized that inhibiting the SNS by using renal denervation (RDN) will improve insulin sensitivity (SI) in a nonhypertensive obese canine model. SI was measured using euglycemic-hyper...

journal_title：Diabetes

authors： Iyer MS,Bergman RN,Korman JE,Woolcott OO,Kabir M,Victor RG,Clegg DJ,Kolka C

更新日期：2016-11-01 00:00:00

abstract：:It has been proposed that insulin-mediated changes in muscle perfusion modulate insulin-mediated glucose uptake. However, the putative effects of insulin on the microcirculation that permit such modulation have not been studied in humans. We examined the effects of systemic hyperinsulinemia on skin microvascular funct...

journal_title：Diabetes

authors： Serné EH,IJzerman RG,Gans RO,Nijveldt R,De Vries G,Evertz R,Donker AJ,Stehouwer CD

更新日期：2002-05-01 00:00:00

abstract：:The role of interferons, either pathogenic or protective, during autoimmune diabetes remains controversial. Herein, we examine the progression of diabetes in NOD mice lacking the type I (IFNAR) or type II (IFNGR) interferon receptor and, for the first time, in mice deficient in both receptors (double knockout [DKO]). ...

journal_title：Diabetes

authors： Carrero JA,Benshoff ND,Nalley K,Unanue ER

更新日期：2018-09-01 00:00:00

abstract：:To define the mechanisms involved in the evolution of diabetes in the Zucker diabetic fatty (ZDF) rat, beta-cell mass and replication rates were determined by immunochemistry, point-counting morphometry, and 6-h 5-bromo-2'-deoxyuridine (BrdU) incorporation. The beta-cell mass in 5- to 7-week-old prediabetic ZDF rats (...

journal_title：Diabetes

authors： Pick A,Clark J,Kubstrup C,Levisetti M,Pugh W,Bonner-Weir S,Polonsky KS

更新日期：1998-03-01 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：:Dysfunctional T cells can mediate autoimmunity, but the inaccessibility of autoimmune tissues and the rarity of autoimmune T cells in the blood hinder their study. We describe a method to enrich and harvest autoimmune T cells in vivo by using a biomaterial scaffold loaded with protein antigens. In model antigen system...

journal_title：Diabetes

authors： Thelin MA,Kissler S,Vigneault F,Watters AL,White D,Koshy ST,Vermillion SA,Mooney DJ,Serwold T,Ali OA

更新日期：2017-08-01 00:00:00

abstract：:Protein kinase C (PKC) has been suggested as a mediator of insulin's effect on glucose transport, and PKC-mediated modulation of tyrosine kinase activity in the insulin receptor has been implicated in regulating the insulin sensitivity of tissues. Because skeletal muscle is a major target of insulin action, we examine...

journal_title：Diabetes

authors： Sowell MO,Treutelaar MK,Burant CF,Buse MG

更新日期：1988-05-01 00:00:00

abstract：:The enzyme activities of mitochondrial glycerol phosphate dehydrogenase (mGPD) (EC 1.1.99.5) and pyruvate carboxylase (PC) (EC 6.4.1.1) have been reported to be low in the pancreatic islet of several rodent models of NIDDM. The present study was undertaken to discern whether mGPD is abnormal in the Zucker diabetic fat...

journal_title：Diabetes

authors： MacDonald MJ,Tang J,Polonsky KS

更新日期：1996-11-01 00:00:00

abstract：:The transcription factor nuclear factor-κB (NF-κB) mediates inflammation and stress signals in cells. To test NF-κB in the control of hepatic insulin sensitivity, we inactivated NF-κB in the livers of C57BL/6 mice through deletion of the p65 gene, which was achieved by crossing floxed-p65 and Alb-cre mice to generate ...

journal_title：Diabetes

authors： Ke B,Zhao Z,Ye X,Gao Z,Manganiello V,Wu B,Ye J

更新日期：2015-10-01 00:00:00

abstract：:Hypothalamic "metabolic-sensing" neurons sense glucose and fatty acids (FAs) and play an integral role in the regulation of glucose, energy homeostasis, and the development of obesity and diabetes. Using pharmacologic agents, we previously found that ~50% of these neurons responded to oleic acid (OA) by using the FA t...

journal_title：Diabetes

authors： Le Foll C,Dunn-Meynell A,Musatov S,Magnan C,Levin BE

更新日期：2013-08-01 00:00:00

abstract：:Ghrelin, an endogenous ligand for growth hormone secretagogue (GHS) receptor originally isolated from the stomach, occurs in the hypothalamic arcuate nucleus and may play a role in energy homeostasis. Synthetic GHSs have activated the hypothalamic arcuate neurons containing neuropeptide Y (NPY), suggesting the involve...

journal_title：Diabetes

authors： Shintani M,Ogawa Y,Ebihara K,Aizawa-Abe M,Miyanaga F,Takaya K,Hayashi T,Inoue G,Hosoda K,Kojima M,Kangawa K,Nakao K

更新日期：2001-02-01 00:00:00

abstract：:Cryopreservation of islets of Langerhans offers a number of important benefits for attempts to cure diabetes by transplantation. In the published literature, a variety of cooling rates, ranging from 0.25 to 75 degrees C/min, in conjunction with warming rates of 4-200 degrees C/min have been proposed to give optimal pr...

journal_title：Diabetes

authors： Taylor MJ,Benton MJ

更新日期：1987-01-01 00:00:00

abstract：OBJECTIVE:The ATP-binding cassette transporter A1 (ABCA1) R230C variant is associated with low HDL cholesterol levels, obesity, and the metabolic syndrome in Mexican-Mestizos. Because a pivotal role for ABCA1 in pancreatic beta-cell function was recently observed in the mouse model, we assessed the association of this ...

journal_title：Diabetes

authors： Villarreal-Molina MT,Flores-Dorantes MT,Arellano-Campos O,Villalobos-Comparan M,Rodríguez-Cruz M,Miliar-García A,Huertas-Vazquez A,Menjivar M,Romero-Hidalgo S,Wacher NH,Tusie-Luna MT,Cruz M,Aguilar-Salinas CA,Canizales-Quintero

更新日期：2008-02-01 00:00:00

abstract：:Decreased retinal blood flow has been measured in streptozotocin (STZ)-induced diabetes of 1 week's duration, and primary insulin intervention was effective in maintaining normal retinal blood flow in diabetic rats. Retinal blood-flow abnormalities precede clinical diabetic retinopathy in both diabetic animals and pat...

journal_title：Diabetes

authors： Higashi S,Clermont AC,Dhir V,Bursell SE

更新日期：1998-04-01 00:00:00

abstract：:It is unknown whether and to what extent changes in various endothelial functions and adrenergic responsiveness are related to the development of microvascular complications in type 1 diabetes. Therefore, endothelium-dependent and endothelium-independent vasodilatation, endothelium-dependent hemostatic factors, and on...

journal_title：Diabetes

authors： Huvers FC,De Leeuw PW,Houben AJ,De Haan CH,Hamulyak K,Schouten H,Wolffenbuttel BH,Schaper NC

更新日期：1999-06-01 00:00:00

abstract：:PTPN22 encodes the lymphoid tyrosine phosphatase (LYP) and is the second strongest non-HLA genetic risk factor for type 1 diabetes. The PTPN22 susceptibility allele generates an LYP variant with an arginine-to-tryptophan substitution at position 620 (R620W) that has been reported by several studies to impart a gain of...

journal_title：Diabetes

authors： Zheng P,Kissler S

更新日期：2013-03-01 00:00:00

abstract：:The monoclonal antibodies 2H4 (anti-CD45RA) and UCHL1 (anti-CD45RO) were used to subdivide the CD4 and CD8 T-cell subsets into naive and memory cells. The peripheral blood lymphocytes of 34 patients with recent-onset IDDM, 21 patients with long-standing IDDM, and healthy control subjects of similar age and sex were an...

journal_title：Diabetes

authors： Smerdon RA,Peakman M,Hussain MJ,Alviggi L,Watkins PJ,Leslie RD,Vergani D

更新日期：1993-01-01 00:00:00

abstract：:Activation of the receptor for advanced glycation end products (RAGE) reportedly triggers a variety of proinflammatory responses. However, our previous work revealed that RAGE-binding AGEs free of endotoxin were incapable of inducing vascular cell adhesion molecule-1 (VCAM-1) or tumor necrosis factor-alpha (TNF-alpha)...

journal_title：Diabetes

authors： Valencia JV,Mone M,Zhang J,Weetall M,Buxton FP,Hughes TE

更新日期：2004-03-01 00:00:00

abstract：:Chronic hyperglycemia causes near-total disappearance of glucose-induced insulin secretion. The etiology has been suggested to be a nonsustainable stimulation of insulin release that causes beta-cells to become unresponsive to glucose through an undefined mechanism. We used an inhibitor of insulin secretion, diazoxide...

journal_title：Diabetes

authors： Leahy JL,Bumbalo LM,Chen C

更新日期：1994-02-01 00:00:00

abstract：:Peptide-YY (PYY) is secreted from endocrine L-cells of the gastrointestinal tract in response to caloric ingestion and may mediate postprandial satiety through the hypothalamic neuropeptide Y2 receptor (Y2R). We examined whether variants in the genes encoding PYY and Y2R might be associated with obesity-related phenot...

journal_title：Diabetes

authors： Hung CC,Pirie F,Luan J,Lank E,Motala A,Yeo GS,Keogh JM,Wareham NJ,O'Rahilly S,Farooqi IS

更新日期：2004-09-01 00:00:00

abstract：:Patient-derived progenitor cell (PC) dysfunction is severely impaired in diabetes, but the molecular triggers that contribute to mechanisms of PC dysfunction are not fully understood. Methylglyoxal (MGO) is one of the highly reactive dicarbonyl species formed during hyperglycemia. We hypothesized that the MGO scavenge...

journal_title：Diabetes

authors： Li H,O'Meara M,Zhang X,Zhang K,Seyoum B,Yi Z,Kaufman RJ,Monks TJ,Wang JM

更新日期：2019-06-01 00:00:00

abstract：:Growth medium containing serum from young diabetic subjects caused a significant stimulation both of cell proliferation and of the outgrowth in cultures of rabbit aortic medial cells above that noted with normal human sera. The addition to the sera of guinea-pig human growth hormones antibody caused a marked inhibitio...

journal_title：Diabetes

authors： Ledet T

更新日期：1977-08-01 00:00:00