testicular sperm expiration

In the present study, animals with a genetic defect in copper metabolism were used as a model organism to study the role of copper in reproduction and to determine whether the disturbances in copper and zinc metabolism affect the testicular tissue and gamete quality in males. Mice with an X-linked mosaic mutation (Atp7a(mo-ms)) exhibit pathological features characteristic of affected copper metabolism. This mutation usually leads to lethality of the mutant males which generally expire on about day 16. Only 4% of mutant animals survive the critical period, achieve maturity, and become fertile...

The sub-chronic effect of Hibiscus sabdariffa (HS) calyx aqueous extract on the rat testes was investigated with a view to evaluate the pharmacological basis for the use of HS calyx extract as an aphrodisiac. Three test groups received different doses of 1.15, 2.30, and 4.60 g/kg based on the LD(50). The extracts were dissolved in the drinking water. The control group was given equivalent volume of water only. The animals were allowed free access to drinking solution during the 12-week period of exposure. At the expiration of the treatment period, animals were sacrificed, testes excised and weighed, and epididymal sperm number recorded...

OBJECTIVES: This investigation was set out to determine whether mercury at a very low dose (4ppm) induces testicular damage on murine testis, and if so whether the toxic effects of mercury could be prevented by zinc. STUDY DESIGN: One of the following solutions was administered in the drinking water of CD-1 male mice: (1) 4ppm HgCl(2); (2) 800ppm ZnCl(2); (3) 4ppm HgCl(2)+800ppm ZnCl(2); or (4) deionised water; for 12 weeks. At the expiration of the treatment period, animals were sacrificed, testes excised and weighed, and epididymal sperm number taken...