松果菊苷对db/db小鼠肝脏脂质代谢的影响

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Abstract [Abstract] Objective To investigate the effect of echinacoside (ECH) on liver lipid metabolism in db/db mice and its mechanism. Methods Twenty-one healthy male db/db mice aged 8 weeks and weighing from 40 to 48 g were divided into db/db+ECH group [n = 11, ECH, 300 mg/(kg·d)] and db/db group (n = 10, given the corresponding volume of saline) by random number table, db/m mice born with same littermates were served as normal control group, that was db/m group (n = 9, given corresponding volume of normal saline). The weight of the mice was measured weekly. The mice were sacrificed 10 weeks after the intervention. The liver tissues were sacrificed and the wet weight of the liver and the weight of the fat around the testes were measured. The total RNA of the liver was extracted and the mRNA of peroxisome proliferator-activated receptor α (PPAR-α) and carnitine palmitoyl transterase-1 (CPT-1) were detected by real-time quantitative PCR. Liver tissue hematoxylin-eosin (HE), oil red O staining were used to evaluate pathologic changes. The levels of alanine aminotransferase (ALT), aspartate transaminase (AST), triglyceride (TG), serum total cholesterol (TC), high density lipoprotein cholesterol (HDL-C) and low density lipoprotein cholesterol (LDL-C) were measured by automatic biochemical analyzer after fasting for 12 hours and 1 d before the rats were sacrificed. Results Compared with db/m group, the body weight, wet weight of liver and testicular fat around the weight in the db/db group were increased, and the levels of ALT, AST, TG, TC, LDL-C in serum were increased and HDL-C in serum was decreased (P ＜ 0.05 or P ＜ 0.01), liver tissue showed liver cell swelling, vacuolar degeneration, a lot of lipid deposition; ECH intervention could reduce body weight, liver wet weight and testicular fat around the weight of db/db mice, decrease the levels of ALT, AST, TG, TC, LDL-C and increase the level of HDL-C (P < 0.05 or P < 0.01), improve the pathological changes of liver tissue and lipid deposition, and up-regulate the expression of PPAR-α and CPT-1 in liver tissue (P ＜ 0.05). Conclusion Echinacoside has protective effect on liver of db/db mice, and its mechanism may be related to up-regulating the expression of PPAR-α and CPT-1 in liver tissue and improving lipid metabolism.

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	TANG Fengjuan1 HAO Yarong1 ZHANG Xue1 QIN Jian2

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TANG Fengjuan1 HAO Yarong1 ZHANG Xue1 QIN Jian2. Effects of echinacoside on liver lipid metabolism in db/db mice[J]. 中国医药导报, 2017, 14(29): 19-23.

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http://www.yiyaodaobao.com.cn/EN/ OR http://www.yiyaodaobao.com.cn/EN/Y2017/V14/I29/19

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