RESUMO
Manganese [Mn] is a naturally occurring essential trace element that present as a solid substance with a water soluble property. In the body Mn is absorbed in the intestine and present with a higher concentration in many tissues; It was reported that manganese, is one of the most used metals in the industry, Recently, several new manganese compounds have been used for fungicides and petrol production, in addition to its use as contrasting agent in magnetic resonance tomography. The manganese chloride solution [8000mg/liter] was orally administered via gastric tubes in a dose of 0.1mL/day to 30 pregnant female mice and this considered as treated group, while the control group was given distilled water only in a same dose and route of administration. The number of the born litters was recorded for both groups. Then from the female offspring; blood was aspirated FSH and LH level was evaluated and the ovaries were excised and processed for histological observations. The recorded results showed significant decrease in the number of the litters of both sexes in the treated group compared to control one. The histological features of the mice ovaries which were born by the treated group exhibited structural changes in comparison to control group. The FSH and LH hormones level also showed significant changes in treated group compared to control group. The recorded results of this study assess the presence of teratogenic effect of manganese chloride on the developing ovaries and the hormonal level of the mice exposed to MncL[2] in utero