Abstract
This study investigated the possible mechanisms of antispermatogenic action of Dalbergia sissoo in Parkes male mice. Mice were orally administered aqueous leaf extract of Dalbergia sissoo (50 and 100 mg kg-1 body weight day-1 for 35 days) and various testicular indices such 3β- and 17β-hydroxysteroid dehydrogenase (HSD) activities, Western blot analyses of StAR, cytochrome P450scc and caspase-3, germ cell apoptosis by TUNEL, and lipid peroxidation and antioxidant enzymes activities were assessed. A significant increase in lipid peroxidation level and a marked decrease in activities of superoxide dismutase, catalase, 3β- and 17β-HSD were noted in the testis of Dalbergia-treated mice compared to controls. The treatment also had adverse effect on expression levels of StAR and cytochrome P450scc in the testis. There was an increase in the number of TUNEL-positive germ cells and in expression level of caspase-3 in testes of Dalbergia-treated mice, especially in those treated with 100 mg dose compared to controls. By 56 days of withdrawal therapy, the alterations induced in the above parameters recovered to control levels. Our results thus suggest that Dalbergia treatment interferes with steroidogenesis and produces oxidative stress ...Continue Reading
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