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Mulberry leaf flavonoids protect against glucotoxicity-induced INS-1 cell apoptosis

Journal of Traditional Chinese Medicine 2019年第2期39卷 153-159页

作者： Wang Ying Li Ming Yu Xuesong He Sheng Wu Xinrong Wang Yan School of Chemistry Engineering Guangdong Pharmaceutical University School of Biosciences and Biopharmaceutics Guangdong Pharmaceutical University Department of Pharmacy General Hospital of Guangzhou Military Command of People's Liberation Army School of Traditional Chinese Medicine Guangdong Pharmaceutical University

OBJECTIVE:To investigate the effect of mulberry leaf flavonoids (MLF) on apoptosis of pancreatic cells induced by high ***:Long exposure to high glucose induces apoptosis of pancreaticβcells, which can lead to diabetes. In this study, we used the rat insulinoma cell line, INS-1. High glucose (33.3 mM) was used to establish a glucotoxicity model. The MTT assay was used to evaluate the MLF effect on cell ***-1 cells were treated with various concentra-tions of MLF (125, 250 and 500 mg/L) for 24 h, and then stimulated with 5.5 or 33.3 mM glucose for 48 ***, the cell supernatants were collected for enzyme-linked immunosorbent assay to determine the level of superoxide dismutase (SOD), catalase(CAT), glutathione peroxidase (GSH-Px), malondialdehyde (MDA), monocyte chemoattractant protein1 (MCP-1), tumor necrosis factor a (TNF-α) and interleukin 6 (IL-6). Western blotting was used to determine the expression of Bcl-2, Bax, caspase-3 and Caspase-9. Cell apoptosis was measured by Annexin V-FITC/propidium iodide double staining and flow ***:MLF (125-500 mg/L) improved cell viability. Furthermore, MLF (250 and 500 mg/L) inhibited apoptosis induced by high glucose. The anti-apoptosis effect of MLF was associated with increased SOD, CAT and GSH-Px expression, as well as reduced MDA levels in high-glucose-treated INS-1cells. Moreover, MLF upregulated Bcl-2 expression,downregulated Bax expression, and reduced the expression of caspase-3 and Caspase-9. Finally, MLF decreased the secretion of inflammatory cytokines and insulin in high-glucose-induced INS-1 ***:MLF is a potential therapeutic agent for preventing diabetes and related disorders.

关键词： Morus Plant leaves In suli no ma Flavon oids Toxicity Apoptosis

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