Testicular Cytotoxicity of Intraperitoneal Thio-TEPA in Mice

Jun, Ban Whan; Cho, Yong Hyun

Abstract

Mice were used to evaluate the adverse testicular effects of anticancer agents. Testicular cytotoxicity of many chemotherapeutic drugs has been evaluated in mice. In this report, we described thio-TEPA induced testicular toxicity in mature male I. C. R. mice. On day o, mice in the treatment groups were given different single intraperitoneal doses of thio-TEPA(0.1 to 25mg/kg). On day 56, all surviving mice were killed and necropsied. Testicular toxicity was evaluated qualitatively by histology and quantitatively by testicular weight(testis weight/body weight), repopulation index and epididymal index. Progressive dose dependent testicular atrophy and oligospermia occurred at low and intermediate doses of thio-TEPA(0.1 to 5mg/kg). Marked testicular atrophy, oligospermia and germinal aplasia were observed at high dose of thio-TEPA(10mg/kg). LD50 for animal mortality at day 56 for thio-TEPA appears to be 25mg/kg. In this report, we described the quantitative relationship between thio-TEPA dosage and testicular cytotoxicity in mature male I. C. R. mice.