[Testicular components volume density alteration associated to cis-platinum: can antioxidants offer protection?]. / Alteración de la densidad del volumen de los componentes testiculares asociada con el cisplatino: ¿pueden los antioxidantes ofrecer protección?

OBJECTIVES: Cis-platinum based chemotherapy agents are widely used in treatment of testicular cancer and its deleterious effects on spermatogenesis are well known. Therefore an extensive survey was undertaken to evaluate the effects of antioxidants in combination with Cis-platinum in an attempt to minimize its effects upon spermatogenic function of adult rats. METHODS: A short-term prospective study (thirteen days) including twenty-four adult male Wistar rats was performed. Animals were assigned into one of three groups (eight per group): GI-control, GII-Cis-platinum treated and GIII-Cis-platinum plus superoxide dismutase and catalase. Histological analyses included germ cell counts, germ to Sertoli cell ratios and estimation of volume density components as well as the determination of the sperm reserves. Data was examined through one-way analysis of variance at 5% level of significance. RESULTS: Germ cell numbers, germ cell to Sertoli cell ratios, organ weights (except body weight) and sperm reserves presented no differences among groups. However, the volumetric proportion of some components (tubular epithelium, tunica propria, Leydig cell nuclei and stroma) were affected (p<0.05) by treatment. The most prominent testicular component, the seminiferous epithelium was reduced (p<0.05) in Cis-platinum treated animals (GII). CONCLUSION: The use of antioxidant in association with Cis-platinum did not affect sperm production (germ cell numbers, germ to Sertoli cell ratios and sperm reserves) of adult rats. However, the deleterious effect of Cis-platinum on the seminiferous tubule epithelium was minimized by antioxidants.

Alteración de la densidad del volumen de los componentes testiculares asociada con el cisplatino: ¿pueden los antioxidantes ofrecer protección? / Testicular components volume density alteration associated to cis-platinum: can antioxidants offer protection?

Objetivos: Los agentes quimioterapéuticos basados en el cisplatino se utilizan ampliamente en el tratamiento del cáncer testicular, y sus efectos perjudiciales sobre la espermatogénesis se conocen bien. En consecuencia, se emprendió un amplio estudio para evaluar los efectos de los antioxidantes en combinación con el cisplatino en un intento de reducir sus efectos sobre la función espermática de ratas adultas. Métodos: Se realizó un estudio prospectivo a corto placo (13 días) sobre 24 ratas Wistar macho adultas. Se asignó a los animales a uno de 3 grupos (8 por grupo): GI-control, GII-tratado con cisplatino y GIII-cisplatino más superóxido dismutasa y catalasa. Los análisis histológicos incluyeron recuentos de células germinales, relaciones entre células germinales y de Sertoli y estimación de la densidad de volumen de los componentes, así como determinación de las reservas de espermatozoides. Los datos se examinaron mediante análisis de la varianza de una vía al nivel de significación del 5%. Resultados: No se hallaron diferencias entre los grupos en el número de células germinales, las relaciones entre células germinales y de Sertoli, el peso de los órganos (excepto el peso corporal) y las reservas de espermatozoides. Sin embargo, el tratamiento afectó (p<0,05) a la proporción volumétrica de algunos componentes (epitelio tubular, túnica propia, núcleos y estroma de células de Leydig). El componente testicular más prominente, el epitelio seminífero, se redujo (p<0,05) en los animales tratados con cisplatino (GII). Conclusión: El uso de antioxidante en asociación con cisplatino no afectó a la producción de espermatozoides (número de células germinales, relaciones entre células germinales y de Sertoli y reservas de espermatozoides) de ratas adultas. Sin embargo, los antioxidantes limitaron el efecto perjudicial del cisplatino sobre el epitelio de los túbulos seminíferos (AU)

Objectives: Cis-platinum based chemotherapy agents are widely used in treatment of testicular cancer and its deleterious effects on spermatogenesis are well known. Therefore an extensive survey was undertaken to evaluate the effects of antioxidants in combination with Cis-platinum in an attempt to minimize its effects upon spermatogenic function of adult rats. Methods: A short-term prospective study (thirteen days) including twenty-four adult male Wistar rats was performed. Animals were assigned into one of three groups (eight per group): GI-control, GII-Cis-platinum treated and GIII-Cis-platinum plus superoxide dismutase and catalase. Histological analyses included germ cell counts, germ to Sertoli cell ratios and estimation of volume density components as well as the determination of the sperm reserves. Data was examined through one-way analysis of variance at 5% level of significance. Results: Germ cell numbers, germ cell to Sertoli cell ratios, organ weights (except body weight) and sperm reserves presented no differences among groups. However, the volumetric proportion of some components (tubular epithelium, tunica propria, Leydig cell nuclei and stroma) were affected (p<0.05) by treatment. The most prominent testicular component, the seminiferous epithelium was reduced (p<0.05) in Cis-platinum treated animals (GII). Conclusion: The use of antioxidant in association with Cis-platinum did not affect sperm production (germ cell numbers, germ to Sertoli cell ratios and sperm reserves) of adult rats. However, the deleterious effect of Cis-platinum on the seminiferous tubule epithelium was minimized by antioxidants (AU)