Abstract
Objective:To investigate improvement effect of osthol(OST)on inflammatory response in gestational diabetes mel-litus(GDM)rats by regulating cGAS-STING signaling pathway.Methods:GDM rat model was established by intraperitoneal injection of 35 mg/kg streptozotocin on the fifth day of pregnancy,and randomly grouped into GDM group,OST-L group(1 mg/kg),OST-M group(10 mg/kg),OST-H group(50 mg/kg),OST-H+DMXAA group(50 mg/kg OST solution+25 mg/kg DMXAA),positive control group(200 mg/kg metformin hydrochloride),with 10 rats in each group,another 10 rats with 5-day pregnancy were regarded as con-trol group.After intervention,glucose meter was applied to detect fasting blood sugar;ELISA was applied to detect insulin and TNF-α,IL-6,IL-1β levels;automatic biochemical analyzer was applied to detect contents of total cholesterol(TC),triglyceride(TG)and high-density lipoprotein(HDL);pancreatic tissues were separated and Western blot was applied to detect cGAS and STING proteins expressions in pancreatic tissue;HE staining was applied to detect pathological changes in pancreatic tissue.Results:Compared with control group,pathological damage in GDM group was severe,cGAS and STING protein expressions,pathological score,TNF-α,IL-6,IL-1β,TC,TG,insulin and fasting blood sugar levels were increased obviously,HDL level was decreased obviously(P<0.05);compared with GDM group,pathological damage in OST-L group,OST-M group and OST-H group was improved,cGAS and STING protein expressions,pathological score,TNF-α,IL-6,IL-1β,TC,TG,insulin and fasting blood sugar levels were decreased obviously,HDL level was increased obviously(P<0.05);compared with OST-H group,pathological damage in OST-H+DMXAA group was aggravated,cGAS and STING protein expressions,pathological score,TNF-α,IL-6,IL-1β,TC,TG,insulin and fasting blood sugar levels were increased obviously,HDL level was decreased obviously(P<0.05),however,there was no difference in posi-tive control group(P>0.05).Conclusion:OST can alleviate inflammatory response in GDM rats by inhibiting cGAS-STING signaling pathway.关键词
蛇床子素/cGAS-STING信号通路/妊娠糖尿病/炎症反应Key words
Osthol/cGAS-STING signaling pathway/Gestational diabetes mellitus/Inflammatory response分类
医药卫生
