Combination of TS-021 with metformin improves hyperglycemia and synergistically increases pancreatic β-cell mass in a mouse model of type 2 diabetes

Life Sciences ◽  
2011 ◽  
Vol 89 (17-18) ◽  
pp. 662-670 ◽  
Author(s):  
Atsushi Tajima ◽  
Takashi Hirata ◽  
Kazuo Taniguchi ◽  
Yukiko Kondo ◽  
Sota Kato ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Mouse Model ◽  
Cell Mass ◽  
Pancreatic Β Cell ◽  
Β Cell

scholarly journals Early administration of dapagliflozin preserves pancreatic β‐cell mass through a legacy effect in a mouse model of type 2 diabetes

2018 ◽  
Vol 10 (3) ◽  
pp. 577-590 ◽  
Author(s):  
Ayumi Kanno ◽  
Shun‐ichiro Asahara ◽  
Mao Kawamura ◽  
Ayuko Furubayashi ◽  
Shoko Tsuchiya ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Mouse Model ◽  
Cell Mass ◽  
Pancreatic Β Cell ◽  
Β Cell ◽  
Early Administration ◽  
Legacy Effect

scholarly journals Administration of mulberry leaves maintains pancreatic β-cell mass in obese/type 2 diabetes mellitus mouse model

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Patlada Suthamwong ◽  
Manabu Minami ◽  
Toshiaki Okada ◽  
Nonomi Shiwaku ◽  
Mai Uesugi ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Mouse Model ◽  
Cell Mass ◽  
Pancreatic Β Cell ◽  
Β Cell ◽  
Mulberry Leaves

scholarly journals Development of a Nongenetic Mouse Model of Type 2 Diabetes

2011 ◽  
Vol 2011 ◽  
pp. 1-12 ◽  
Author(s):  
Elizabeth R. Gilbert ◽  
Zhuo Fu ◽  
Dongmin Liu
Keyword(s):  
Insulin Resistance ◽  
Type 2 Diabetes ◽  
Mouse Model ◽  
Serum Insulin ◽  
Cell Mass ◽  
Low Fat ◽  
Β Cell ◽  
Islet Mass ◽  
Metabolic Characteristics

Insulin resistance and loss of β-cell mass cause Type 2 diabetes (T2D). The objective of this study was to generate a nongenetic mouse model of T2D. Ninety-six 6-month-old C57BL/6N males were assigned to 1 of 12 groups including (1) low-fat diet (LFD; low-fat control; LFC), (2) LFD with 1 i.p. 40 mg/kg BW streptozotocin (STZ) injection, (3), (4), (5), (6) LFD with 2, 3, 4, or 5 STZ injections on consecutive days, respectively, (7) high-fat diet (HFD), (8) HFD with 1 STZ injection, (9), (10), (11), (12) HFD with 2, 3, 4, or 5 STZ injections on consecutive days, respectively. After 4 weeks, serum insulin levels were reduced in HFD mice administered at least 2 STZ injections as compared with HFC. Glucose tolerance was impaired in mice that consumed HFD and received 2, 3, or 4 injections of STZ. Insulin sensitivity in HFD mice was lower than that of LFD mice, regardless of STZ treatment. Islet mass was not affected by diet but was reduced by 50% in mice that received 3 STZ injections. The combination of HFD and three 40 mg/kg STZ injections induced a model with metabolic characteristics of T2D, including peripheral insulin resistance and reduced β-cell mass.

scholarly journals Islet Inflammation Impairs the Pancreatic β-Cell in Type 2 Diabetes

Physiology ◽  
2009 ◽  
Vol 24 (6) ◽  
pp. 325-331 ◽  
Author(s):  
Marc Y. Donath ◽  
Marianne Böni-Schnetzler ◽  
Helga Ellingsgaard ◽  
Jan A. Ehses
Keyword(s):  
Type 2 Diabetes ◽  
Cell Mass ◽  
Metabolic Stress ◽  
Innate Immune ◽  
Pancreatic Β Cell ◽  
Β Cell ◽  
Amyloid Deposits ◽  
Impaired Insulin ◽  
Islet Inflammation

Onset of Type 2 diabetes occurs when the pancreatic β-cell fails to adapt to the increased insulin demand caused by insulin resistance. Morphological and therapeutic intervention studies have uncovered an inflammatory process in islets of patients with Type 2 diabetes characterized by the presence of cytokines, immune cells, β-cell apoptosis, amyloid deposits, and fibrosis. This insulitis is due to a pathological activation of the innate immune system by metabolic stress and governed by IL-1 signaling. We propose that this insulitis contributes to the decrease in β-cell mass and the impaired insulin secretion observed in patients with Type 2 diabetes.

scholarly journals Pancreatic β-Cell Proliferation in Obesity1,2

2014 ◽  
Vol 5 (3) ◽  
pp. 278-288 ◽  
Author(s):  
Amelia K. Linnemann ◽  
Mieke Baan ◽  
Dawn Belt Davis
Keyword(s):  
Type 2 Diabetes ◽  
Cell Proliferation ◽  
Cell Mass ◽  
Pancreatic Β Cell ◽  
Β Cell ◽  
Extracellular Signals ◽  
Secreted Factors ◽  
And Function ◽  
Hepatocyte Growth

Abstract Because obesity rates have increased dramatically over the past 3 decades, type 2 diabetes has become increasingly prevalent as well. Type 2 diabetes is associated with decreased pancreatic β-cell mass and function, resulting in inadequate insulin production. Conversely, in nondiabetic obesity, an expansion in β-cell mass occurs to provide sufficient insulin and to prevent hyperglycemia. This expansion is at least in part due to β-cell proliferation. This review focuses on the mechanisms regulating obesity-induced β-cell proliferation in humans and mice. Many factors have potential roles in the regulation of obesity-driven β-cell proliferation, including nutrients, insulin, incretins, hepatocyte growth factor, and recently identified liver-derived secreted factors. Much is still unknown about the regulation of β-cell replication, especially in humans. The extracellular signals that activate proliferative pathways in obesity, the relative importance of each of these pathways, and the extent of cross-talk between these pathways are important areas of future study.

scholarly journals Clinical Potential of Extracellular Vesicles in Type 2 Diabetes

2021 ◽  
Vol 11 ◽  
Author(s):  
Jie Liu ◽  
Xin Sun ◽  
Fu-Liang Zhang ◽  
Hang Jin ◽  
Xiu-Li Yan ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Extracellular Vesicles ◽  
Sedentary Lifestyle ◽  
Cell Mass ◽  
Pancreatic Β Cell ◽  
Β Cell ◽  
Peripheral Tissues ◽  
And Function ◽  
Clinical Potential

Type 2 diabetes (T2D) is a major public health disease which is increased in incidence and prevalence throughout the whole world. Insulin resistance (IR) in peripheral tissues and insufficient pancreatic β-cell mass and function have been recognized as primary mechanisms in the pathogenesis of T2D, while recently, systemic chronic inflammation resulting from obesity and a sedentary lifestyle has also gained considerable attention in T2D progression. Nowadays, accumulating evidence has revealed extracellular vesicles (EVs) as critical mediators promoting the pathogenesis of T2D. They can also be used in the diagnosis and treatment of T2D and its complications. In this review, we briefly introduce the basic concepts of EVs and their potential roles in the pathogenesis of T2D. Then, we discuss their diagnostic and therapeutic potentials in T2D and its complications, hoping to open new prospects for the management of T2D.

scholarly journals Islet Insulin Secretion, β-Cell Mass, and Energy Balance in a Polygenic Mouse Model of Type 2 Diabetes With Obesity

2014 ◽  
Vol 2 ◽  
pp. 232640981452815 ◽  
Author(s):  
Xia Mao ◽  
Kristy D. Dillon ◽  
Michael F. McEntee ◽  
Arnold M. Saxton ◽  
Jung Han Kim
Keyword(s):  
Type 2 Diabetes ◽  
Insulin Secretion ◽  
Energy Balance ◽  
Mouse Model ◽  
Cell Mass ◽  
Β Cell

Pancreatic β-cell mass in European subjects with type 2 diabetes

2008 ◽  
Vol 10 ◽  
pp. 32-42 ◽  
Author(s):  
J. Rahier ◽  
Y. Guiot ◽  
R. M. Goebbels ◽  
C. Sempoux ◽  
J. C. Henquin
Keyword(s):  
Type 2 Diabetes ◽  
Cell Mass ◽  
Pancreatic Β Cell ◽  
Β Cell
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