Abstract
In order to test the hypothesis that pretreatment with gonadotropin-releasing hormone (GnRH) analogs might ameliorate cytotoxic drug-induced testicular damage, mature male Wistar rats were pretreated for 2 weeks with a GnRH superactive agonist or a pure GnRH antagonist prior to, and for 1 week after, a 5 mg/kg intraperitoneal dose of cis-platinum. Despite inhibition of testicular function by both GnRH analogs prior to cis-platinum administration, there was no evidence of protection or enhanced recovery of spermatogenesis at 6 and 12 weeks after cis-platinum treatment, and spermatogenesis was significantly further depressed at both time-points by both GnRH agonist and antagonist pretreatment. This suggests that pretreatment with GnRH analogs in the rat does not protect spermatogenesis from cis-platinum-induced testicular damage within up to two spermatogenic cycles and that hypogonadism at the time of cytotoxic drug treatments may aggravate testicular damage.
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