کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
34361 | 45019 | 2015 | 8 صفحه PDF | دانلود رایگان |
• We reveal the hypoglycemic mechanisms of GvEx in high-glucose-induced insulin-resistant liver cells.
• Insulin-resistant status was improved by GvEx through modulating the insulin signaling cascade.
• GvEx increases glucose uptake and enhanced glycogen accumulation.
The effects of aqueous guava leaf extract (GvEx) on insulin resistance were evaluated in high glucose-induced insulin-resistant mouse FL83B cells. Glucose uptake and glycogen content were determined and western blot analysis was performed to study the anti-diabetic effects of GvEx. Our results showed that administration of 200 and 400 μg/mL GvEx resulted in a significant increase in glucose uptake in both normal and insulin-resistant cells. Glycogen content in cells was significantly higher after incubation with GvEx (200, 400 μg/mL) than that in control group (p < 0.05). Further, western blot analysis revealed that 200 and 400 μg/mL GvEx significantly enhanced the levels of insulin-related signaling components, including insulin receptor (IR), as well as enhancing the phosphorylation of the insulin receptor (p-IR (Tyr)), insulin receptor substrate (p-IRS (Tyr)), p85 regulatory subunit of phospho-inositide 3 kinase (PI3K (p85)), protein kinase B (p-Akt (Ser)), glucose transporter 2 (Glut 2), and total glycogen synthase. In conclusion, GvEx improved insulin resistance by promoting glucose uptake and enhancing glycogen content via modulation of the insulin signaling pathway in high glucose-induced insulin-resistant mouse FL83B cells.
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Journal: Process Biochemistry - Volume 50, Issue 7, July 2015, Pages 1128–1135