ABSTRACT
Samanea tubulosa is a plant used for medicinal and feeding purposes. However, ingestion of S. tubulosa pods has been associated with bovine abortion. Thus, the aim of this work was to investigate the effects of diet containing 5% of S. tubulosa pod meal on male and female Wistar rats. Diet was administered to male rats (n = 10) for 60 days before mating. Female rats (n = 10) received the treatment for 30 days, during cohabitation and from gestational day (GD) 0 to GD20. Treated animals were mated with untreated rats. In male rats, plant consumption caused decreased food consumption and 20% fertility index reduction. Litters from treated males presented lower body weight and crownrump length. Female rats treated with the plant increased water and food intake and body weight. Decreases in fertility, fecundity and gestation indices and increase of placenta weight and mean number of corpora lutea were found. Thus, owing to the possible general and reproductive toxic effects, long-term consumption of S. tubulosa is not recommended for phytotherapic or food purposes...
Samanea tubulosa é uma planta utilizada na fitoterapia e na alimentação animal. Entretanto, a ingestão de vagens de S. tubulosa tem sido associada à ocorrência de abortos em bovinos. Assim, o objetivo do trabalho foi investigar os efeitos da dieta contendo 5% de vagens de S. tubulosa em ratos machos e fêmeas Wistar. A dieta foi administrada para ratos machos (n = 10) por 60 dias antes do acasalamento. Ratos fêmeas (n = 10) receberam o tratamento por 30 dias, durante a coabitação e do dia gestacional (GD) 0 ao GD 20. As fêmeas tratadas foram acasaladas com ratos não tratados. Em machos, o consumo da planta causou diminuição no consumo de ração e redução de 20% no índice de fertilidade. A prole de machos tratados apresentou menor ganho de peso e comprimento cabeça cauda. Fêmeas tratadas com a planta apresentaram aumento do consumo de ração e água e do peso corporal. Ainda, foram observadas diminuição na fertilidade, fecundidade e no índice de gestação e aumento do peso da placenta e no número médio de corpos lúteos. Desse modo, em decorrência aos possíveis efeitos tóxicos sistêmicos e reprodutivos, o consumo prolongado de S. tubulosa não é recomendado para fins fitoterápicos ou alimentar...
Subject(s)
Animals , Female , Pregnancy , Rats , Abortion, Veterinary/prevention & control , Plants, Medicinal/adverse effects , Plants, Medicinal/chemistry , Animal Feed/toxicity , Rats, Wistar/metabolism , Birth Rate , Spermatogenesis-Blocking Agents/analysis , Estrous Cycle , Fertility , Ovarian Follicle/physiologyABSTRACT
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)
