ArticleBioinformation2023
Effect of estradiol on histopathology of brain in unilateral and bilateral ovariectomized rats.
Article in Bioinformation, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Estradiol, a major form of estrogen, plays a crucial role in various aspects of brain function, including neuronal health, synaptic plasticity, and cognitive processes. Therefore, it is of interest to investigate the histopathological changes of the rat brain following estradiol treatment in unilateral and bilateral ovariectomized rats, a commonly used method to induce estrogen deficiency and study the consequences of hormonal changes. Two months old Wistar albino female rats were divided into five experimental groups, each consisting of 6 animals. Unilateral and bilateral ovariectomized rats were treated with estradiol (10 mg/Kg/b.wt) subcutaneously for 30 days. The histopathological analysis of brain revealed normal 5-6 compact layers of small pyramidal cells of CA3 region, most with vesicular nuclei in control rats andan irregular and disturbed thickness of the pyramidal cell layer in the CA3 region, suggesting neuronal loss in unilateral ovariectomized rats. Estradiol therapy to these rats showed dark hyperchromatic layers of pyramidal cells in the CA3 region, most of which displayed vesicular nuclei and less shrinkage. Bilateral ovariectomized rats without estradiol treatment showed irregular and disturbed thickness of the pyramidal cell layer in the CA3 region Similar to Group II, indicating neuronal loss and bilateral ovariectomized rats with estradiol treatment showed no significant changes. These findings highlight the potential role of estradiol in modulating the histopathological changes associated with ovariectomy. Further research is warranted to elucidate the underlying mechanisms through which estradiol exerts its effects on neuronal integrity and to explore potential therapeutic strategies for preventing or reversing these histological changes.
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