The effect of different hormones and antibiotics on activity of ast enzyme and its isozymes in Wistar rats

Background: One of the valuable tests for diagnosis of cardiovascular and liver diseases is measuring of AST activity. One of the main enzymes of transaminases group is aspartate aminotransferase. Previous Studies have shown that some alteration may occur in mitochondria function as the result of different disease or taking different medication; these changes in mitochondrial and cytosolic AST isozymes can be the sign of disorders. According to the role of steroid hormone in induction of its effects on protein synthesis genes, this study is conducted to shed some light on mechanisms and the interference of steroid hormones and antibiotics.Materials, Methods & Results: In this study, male Wistar rats were injected intramuscularly with Testosterone, progesterone and estradiol; while tetracycline and streptomycin injections were intraperitoneal. Testosterone, progesterone and estradiol injections were carried out in a short-term (15 days) and long-term (45 days) periods. Steroid hormones were dissolved in sesame in a way that by each injection, 0.2 mL sesame oil (containing specific amount of hormone) was injected to the rat. Control group was kept in the same condition except that their sesame oil injection contained no hormone. Tetracycline and Streptomycin injection was carried out for 5 days at 7 am and pm, at 50 mg/kg dosage intraperitoneally. In short- and long-term periods, rats were divided into four groups of 6-member. The concentrations were the same in the periods and 0.2 mL sesame oil was injected intramuscularly. 1 mg testosterone, 12 mg progesterone and 0.2 mg estradiol were intramuscularly injected to rats in group 2, 3 and 4, respectively [10]. Rats were divided into 9 six-member groups as follows:[...]

The effect of different hormones and antibiotics on activity of ast enzyme and its isozymes in Wistar rats

Background: One of the valuable tests for diagnosis of cardiovascular and liver diseases is measuring of AST activity. One of the main enzymes of transaminases group is aspartate aminotransferase. Previous Studies have shown that some alteration may occur in mitochondria function as the result of different disease or taking different medication; these changes in mitochondrial and cytosolic AST isozymes can be the sign of disorders. According to the role of steroid hormone in induction of its effects on protein synthesis genes, this study is conducted to shed some light on mechanisms and the interference of steroid hormones and antibiotics.Materials, Methods & Results: In this study, male Wistar rats were injected intramuscularly with Testosterone, progesterone and estradiol; while tetracycline and streptomycin injections were intraperitoneal. Testosterone, progesterone and estradiol injections were carried out in a short-term (15 days) and long-term (45 days) periods. Steroid hormones were dissolved in sesame in a way that by each injection, 0.2 mL sesame oil (containing specific amount of hormone) was injected to the rat. Control group was kept in the same condition except that their sesame oil injection contained no hormone. Tetracycline and Streptomycin injection was carried out for 5 days at 7 am and pm, at 50 mg/kg dosage intraperitoneally. In short- and long-term periods, rats were divided into four groups of 6-member. The concentrations were the same in the periods and 0.2 mL sesame oil was injected intramuscularly. 1 mg testosterone, 12 mg progesterone and 0.2 mg estradiol were intramuscularly injected to rats in group 2, 3 and 4, respectively [10]. Rats were divided into 9 six-member groups as follows:[...](AU)