کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10768777 | 1050814 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Gastric inhibitory polypeptide modulates adiposity and fat oxidation under diminished insulin action
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
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چکیده انگلیسی
Gut hormone gastric inhibitory polypeptide (GIP) stimulates insulin secretion from pancreatic β-cells upon ingestion of nutrients. Inhibition of GIP signaling prevents the onset of obesity and consequent insulin resistance induced by high-fat diet. In this study, we investigated the role of GIP in accumulation of triglycerides into adipocytes and in fat oxidation peripherally using insulin receptor substrate (IRS)-1-deficient mice and revealed that IRS-1â/âGIPRâ/â mice exhibited both reduced adiposity and ameliorated insulin resistance. Furthermore, increased gene expression of CD36 and UCP2 in liver, and increased expression and enzyme activity of 3-hydroxyacyl-CoA dehydrogenase in skeletal muscle of IRS-1â/âGIPRâ/â mice might contribute to the lower respiratory quotient and the higher fat oxidation in light phase. These results suggest that GIP plays a crucial role in switching from fat oxidation to fat accumulation under the diminished insulin action as a potential target for secondary prevention of insulin resistance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochemical and Biophysical Research Communications - Volume 335, Issue 3, 30 September 2005, Pages 937-942
Journal: Biochemical and Biophysical Research Communications - Volume 335, Issue 3, 30 September 2005, Pages 937-942
نویسندگان
Heying Zhou, Yuichiro Yamada, Katsushi Tsukiyama, Kazumasa Miyawaki, Masaya Hosokawa, Kazuaki Nagashima, Kentaro Toyoda, Rei Naitoh, Wataru Mizunoya, Tohru Fushiki, Takashi Kadowaki, Yutaka Seino,