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雌激素与孕激素联合应用对老龄小鼠乳腺的影响

Effect of estrogen plus interrupted progestin on breast in senile mice
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摘要 以16月龄C57-WT小鼠为研究对象,研究雌激素与孕激素联合应用对老龄小鼠乳腺的影响,并分析了雌、孕激素联合与乳腺癌发生的关系及相应机制。将实验动物随机分为对照组、短期处理组、长期处理组,应用雌二醇联合孕酮灌胃法构建短期和长期模型,对乳腺的形态、乳腺上皮细胞比例及组织学改变进行研究,并通过分析乳腺中雌激素受基因ERα及增殖相关标志物Ki67的表达进行进一步的验证及机制探索。结果表明,雌、孕激素联合应用长期可增加乳腺导管分支及密度,管腔细胞与基底细胞比例下降,增加乳腺导管良性增生比例,促进非典型性增生形成,且导致ERα及Ki67表达上升,具有统计学意义。本研究结果将为老年乳腺癌的预防和治疗提供依据。
出处 《浙江农业科学》 2018年第7期1131-1134,1137,共5页 Journal of Zhejiang Agricultural Sciences
基金 国家自然科学基金面上项目(81572730)
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