ABSTRACT
Objective: To explore the effects of hydroxy-methyl-glutaryl coenzymeA reductase inhibitor (HMG-CoA RI) simvastatin on renal expression of apoptosis related gene Fas/Fas-L in aged diabetic rats after uninephrectomy. Methods: Elderly uninephrectomized SD rats were randomly divided into uninephrectomized control group (group C), streptozocin(STZ)-induced diabetic model group(group D), and diabetes + simvastatin group (group S). The apoptosis indices in renal tisses of three groups were detected by terminal deoxynucleotide mediated nick end labeling 12 weeks later. Immunofluorescence and real-time quantitative PCR were employed to observe the expression changes of Fas/Fas-L genes at the transcription and translation levels. Results: Compared with group C, group D had significantly higher apoptosis index and expression level of Fas/Fas-L; the above parameters were lower in group S compared with those in group D (P<0.05). The expression of Fas/Fas-L protein was mainly in the renal tubules. Conclusion: Both Fas and Fas-L genes are associated with the development and progression of diabetic nephropathy in aged rats. Simvastatin can down-regulate the translation and transcription of the genes, inhibit cell apoptosis and protect the kidney.
ABSTRACT
Objective: To investigate effects of Erbie Decoction on the hepatocyte apoptosis-related factors Fas/Fas-L in rat with liver fi brosis,and to explore its anti-fi brosis mechanism. Methods: To Induce immune Liver fibrosis of rat model were established by intraperitoneal injection of pig serum. 48 rats were randomly divided into normal group, model group, pretreatment groups(high, middle and low dose groups of Erbie Decoction, and Fufang Biejia Ruangan Pills group. One week after the feeding adaptation, in addition to the normal group, other groups were given intraperitoneal injection of pig serum, each rat with 0.5ml, twice a week. At the same time, pretreatment groups were given intragastric administration daily. After 9 weeks, the expression of TGF-?1 and Fas/Fas-L were detected with immunohistochemistry assay. Results: Compared with normal group, in model group, TGF-?1 and Fas/Fas-L increased obviously(P
ABSTRACT
Aim To investigate the effects of pumpkin polysaccharide(PP) on Fas、Fas-L、Bcl-2 and Bax expression in the pancreas of diabetic rats.Methods Rats were injected intraperitoneally(ip) with streptozocin(STZ) 60 mg?kg-1 to induce diabetic model.The diabetic rats were given PP 150 mg?kg-1,300 mg?kg-1,600 mg?kg-1.The blood sample were taken after three weeks.Blood glucose was measured by glucose oxidase method;The expression of the Fas and Fas-L have been determined by using immunohistochemistry(S-P method);The expression of Bax mRNA and Bcl-2 mRNA were checked up by Reverse transcription PCR(RT-PCR).Results PP could decrease the level of blood glucose in streptozotocin-induced diabetic rats;After three weeks,The expressions of the Fas and FasL in ? cell of streptozotocin-induced diabetic rats were obviously lower;The expression of Bax mRNA was obviously down-regulated,the expression of Bcl-2 mRNA was obviously up-regulated,and the ratio of Bcl-2/Bax was advanced after the diabetic rats were given PP.Conclusions PP could decrease the level of blood glucose of the diabetic rats.The mechanism was related to decreasing the expressions of the Fas and FasL and regulating the expressions of Bcl-2 and Bax in the pancreas of diabetic rats.