the improvement effects of gordonia bronchialis on male fertility of rats with diabetes mellitus induced by streptozotocin

Background: this study evaluated the possible protective effects of gordonia bronchialis (gb) on oxidative stress and some subsequent alterations on testis from rats undergoing an experimentally induced type 1 diabetes. methods: a total of 40 male rats were randomly divided into four groups of ten. diabetes was induced by injection of 55 mg/kg streptozotocin in 30 rats. oral administration of gb at dose of 105 (low dose) and 10^7 (high dose) cfu/rat was performed in two groups continuously for 14 days. the third and fourth groups received normal saline as the diabetic and healthy control groups, respectively. the blood and testicular tissue samples were taken on the 14th and 21st days post treatment for biochemical and histopathological evaluations. results: significant differences were found in blood glucose level, insulin, il-6 and tnf-α values together with catalase and superoxide dismutase activities and malondialdehyde level in the diabetic group in comparison with healthy and gb recipient groups. moreover, the histopathological lesions were observed in the diabetic rats mainly included basement membrane thickening, decreased number of sertoli cells, and severe reduction of spermatogenesis markedly attenuated in gb-treated rats. conclusion: taken together, it seems that oral administration of gb could ameliorate testicular damage associated with some related parameters in the diabetic animal model.