Abstract
ABSTRACT We investigated possible changes in morphology and immunohistochemistry of the uterus and ovaries of rats caused by nandrolone (ND); we also investigated effects on fertility. We used 30 rats divided into three experimental groups: control (C), control vehicle (CV) and 5 mg/kg ND. Rats treated with ND exhibited loss of estrous cyclicity with predominance of the estrus phase, increased body weight and an organosomatic index that was decreased for the ovaries, but increased for the uterus. In the ovary, we observed a reduction in primary and secondary follicles and an increase in tertiary follicles; no corpora lutea were observed. Estrogen and progesterone levels were reduced. In the uterus, the endometrium was edematous with hyperplasic glands. The cytokines, TNFα and IL6, and the apoptotic index were increased in rats treated with ND. VEGF-A was increased in the ovaries and decreased in the uterus. We conclude that ND disrupts ovarian and uterine histophysiology by establishing an anovulatory and inflammatory condition, which directly affects reproduction.
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