Effect of 'Nourishing Yin and Qi, Promoting Blood Circulation and Detoxification' on Endoplasmic Reticulum Stress CHOP Apoptotic Bypass in Diabetic Atherosclerosis

摘要

To explore the mechanism of Huoxue Jiedu Jiangtang Recipe (HJJR) in alleviating endoplasmic reticulum stress (ERS) - inflammation, inhibiting ERS apoptotic bypass of CHOP and alleviating diabetic atherosclerosis (AS). Diabetic AS rats were duplicated by feeding of high lipid diet and intraperitoneal injection of streptozotocin. After diabetes modeled successfully, the rats were randomly divided into model group, low-dose HJJR group (HJJR_1), high-dose HJJR group (HJJR_2) and western medicine group (Gliquidone+ Benazepril), and accepted corresponding drugs for 2 months respectively. The same batch of rats were taken as normal control group and fed with common diet. The levels of glycosylated hemoglobin (GHb), blood lipid, fasting serum insulin (FINS) and insulin resistance index (IRI) were measured in each group. The contents of inflammatory factors TNF-α and IL-6 were detected by immunohistochemistry. The mRNA transcription of GRP78 and caspase-12 were tested by reverse- transcription polymerase chain reaction (RT-PCR). The apoptotic level of aortic cells was checked by TUNEL. Compared with the model group, all drug groups could significantly reduce GHb, IRI, TG and LDL-C (P0.05), increase FINS and HDL-C (P0.05), down-regulate transcription of CHOP and GRP78 (P0.05), reduce inflammatory factors TNF-a, IL-6, and decreased aortic apoptosis index (AI) (P0.05). Compared with the western medicine group, the effect of HJJR2 group was more significant (P0.05). HJJR could alleviate insulin resistance, correct lipid metabolism disorder, depress endoplasmic reticulum stress-induced inflammatory reaction, and inhibit endoplasmic reticulum stress-induced apoptotic bypass of CHOP in arterial cells. The therapeutic effect is dose dependent.