Streptozotocin ile indüklenen diyabetik sıçanlarda oksidatif stres, histopatolojik ve bazı biyokimyasal parametrelere kafeik asit fenetil esterin etkileri

Abstract

Objective: Diabetes mellitus (DM) is a significant health problem and its treatmet has taken herbal and syntetic remedies as well as insulin therapy. The aim of this study was to evaluate the therapeutic effects of caffeic acid phenil ester (CAPE) in rats with streptozotocin (STZ)-induced diabetes using hystopathological and biochemical methods. Methods: 22 adult Wistar Albino strain male rats were divided into three groups: control group (n=8), diabetic group (n=6) and the diabetic+CAPE group (n=8). Two groups were injected intraperitoneally (i.p.) with 50 mg/kg STZ to induce DM. Rats with blood glucose levels of 270 mg/dL or greater and with siagns of polyuria and polydipsia after 3 days were considered to be diabetic. Diabetic+CAPE group was given ip CAPE (10 ?mol/kg/during 60 days) for treatment. Results: Liver malondialdehyde (MDA) level was significantly higher in the diabetic group. The higher liver MDA was supported by higher enzyme levels, alanine aminotransferase (ALT) and aspartate aminotransferase (AST). MDA levels in kidney were not significantly different between groups and superoxide dismutase (SOD) levels were increased in CAPE group. Additionally, blood urea nitrogen (BUN) and creatinine enzyme levels were mostly stable in serum samples. At the end of the experiment, pancreatic tissue MDA in the experimental groups decreased compared with the control group. The kidney, liver and pancreas had almost normal histological structure in the CAPE group when compared to the diabetic group. Considering blood glucose levels, CAPE treatment maintained blood glucose at the same level with controls, compared to diabetic group. Conclusion: Liver tissue might be the most affected by oxidative stress caused DM. A single injection of STZ decreased the level of MDA in pancreatic tissue at the end of experiment. This decrease might be exhausting MDA due to disruption in tissue integrity. Consequently, it was observed that CAPE suppressed oxidative stress and decreased glucose levels in STZ-induced diabetic rats. Thus, it may be useful to use as remedies, the antioxidant properties, in addition to anti-diabetic drugs in DM. © TurkJBiochem.com.