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The effect of mitomycin C on daily sperm production potential and other spermatogenic parameters in mice
J Fernandez-VanCleve1, B Salim, P M Zavos
1Department of Animal Sciences, University of Kentucky, Lexington 40546-0215.
Abstract:
Thirty CD-1 male mice were randomly allocated to one of three groups and treated daily for five consecutive days via intraperitoneal (IP) injections. Treatments consisted of: 1) control (vehicle), consisting of 0.2 ml dose of phosphate buffered saline, 2) 1.0 mg of Mitomycin C (MC) per kg body weight, and 3) 2.0 mg of MC per kg body weight. All animals were sacrificed 35 days post-initiation of the experiment. Mice administered the higher dose of MC died within the first 19 days after the first injection. Significant differences (P less than 0.001) were observed between the two remaining groups in daily sperm production potential, sperm count per high power field, percent motility and progressive motility. Histological preparation of testicular parenchymal tissue revealed a high degree of seminiferous epithelial destruction and increased vacuolization associated with treatment of MC. These data indicate that MC causes severe pathological changes to spermatogonial cells within the seminiferous tubules, which in turn, induce spermatogenic dysfunctions noted in all parameters measured in this study.
Insights
Mitomycin C (MC) significantly impairs male reproductive health by damaging sperm production and motility. This study highlights MC
Area of Science:
- Reproductive Toxicology
- Spermatogenesis Research
- Drug-induced Pathologies
Background:
- Mitomycin C (MC) is an antineoplastic agent with known cytotoxic effects.
- Potential impacts of MC on male reproductive function require detailed investigation.
Purpose of the Study:
- To evaluate the dose-dependent effects of Mitomycin C (MC) on spermatogenesis in CD-1 male mice.
- To assess histological and functional parameters of testicular damage induced by MC.
Main Methods:
- CD-1 male mice received daily intraperitoneal injections of vehicle, 1.0 mg/kg MC, or 2.0 mg/kg MC for five consecutive days.
- Sperm production, motility, and testicular histology were analyzed 35 days post-injection.
- Mortality rates and time to death were recorded for the higher MC dose group.
Main Results:
- The higher dose (2.0 mg/kg) of MC resulted in mortality within 19 days.
- Significant reductions (P < 0.001) in daily sperm production, sperm count, and motility were observed in the surviving MC-treated group compared to controls.
- Histological examination revealed severe seminiferous epithelial destruction and vacuolization in MC-treated testes.
Conclusions:
- Mitomycin C (MC) induces significant dose-dependent testicular toxicity.
- MC causes severe damage to spermatogonial cells, leading to impaired sperm production and motility.
- These findings underscore the reproductive risks associated with MC exposure.