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脑芳香化酶的表达特点及其生物学意义 被引量:6

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摘要 目的芳香化酶为催化雄激素转化为雌激素的最后一步限速酶。在脑内其主要表达于下丘脑和边缘系统。表达高峰在出生前后,性成熟后降至最低,雄激素对脑芳香化酶的表达具有调节作用。正常情况下,芳香化酶的表达主要见于特定脑区的神经元内,而脑损伤后,其表达出现在各损伤脑区的反应性星形胶质细胞中,且具有活性。脑内雌激素的有效质量浓度主要取决于脑局部芳香化酶表达水平,由此产生的雌激素能调节靶细胞的形态学、突触发生和树突棘密度、神经营养因子和(或)其受体的表达等,从而影响脑的性别分化并发挥其神经营养和神经保护作用。
作者 沈凌 李占魁
出处 《实用儿科临床杂志》 CAS CSCD 北大核心 2006年第22期1586-1588,共3页 Journal of Applied Clinical Pediatrics
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参考文献20

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