Perinatal aromatase activity in male and female rats: effect of prenatal alcohol exposure.

Perinatal aromatase activity in male and female rats: effect of prenatal alcohol exposure.
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雄性和雌性大鼠围产期芳香酶活性:产前酒精暴露的影响。

DOI:
10.1111/j.1530-0277.1988.tb01342.x
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发表时间:
1988
期刊:
Alcoholism, clinical and experimental research
影响因子:
--
通讯作者:
Handa,RJ
Handa,RJ
中科院分区:
--
文献类型:
--
作者:
McGivern,RF;Roselli,CE;Handa,RJ

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胎儿酒精暴露已被证明会对雄性大鼠的行为产生长期的女性化和去男性化影响,这些行为在组织上依赖于围产期雄激素水平。此前已证明这种接触可以抑制关键产前时期睾酮的正常激增。由于雄性大鼠行为的去女性化依赖于大脑中睾酮芳香化产生的雌激素,因此从妊娠第 14 天开始测量暴露于酒精的雄性和雌性围产期的大脑芳香酶活性。在妊娠第16天至第20天的胎儿的整个下丘脑以及产后6-12小时的动物的下丘脑视前区和杏仁核中测量芳香酶活性。与对照组相比,在妊娠第 18 天和 19 天以及产后第 1 天,暴露于酒精的胎儿男性的下丘脑芳香酶活性升高。未发现产前酒精暴露对女性有影响。第一天,杏仁核中芳香酶活性的性别影响就很明显,男性的芳香酶活性高于女性。总的来说,这些发现表明,在神经行为性别分化的围产期,胎儿酒精暴露会提高男性的区域大脑芳香酶活性,但不会提高女性的区域大脑芳香酶活性。
Fetal alcohol exposure has been shown to produce long-term feminizing and demasculinizing effects on male rat behaviors which are organizationally dependent upon perinatal androgen levels. Such exposure has previously been shown to suppress the normal surge of testosterone during the critical prenatal period. Since defeminization of male rat behavior is dependent upon estrogen derived from the aromatization of testosterone in brain, brain aromatase activity was measured during the perinatal period in males and females exposed to alcohol beginning on Day 14 of gestation. Aromatase activity was measured in whole hypothalamus of fetuses from Day 16 through 20 of gestation and in the hypothalamic preoptic area and amygdala of animals 6-12 hr postparturition. Hypothalamic aromatase activity was elevated in fetal alcohol exposed males compared to controls on Days 18 and 19 of gestation and on postnatal Day 1. No effect of prenatal alcohol exposure was found in females. A sex effect in aromatase activity in the amygdala was evident on Day 1 when activity was found to be greater in males than females. Overall, these findings indicate that fetal alcohol exposure will elevate regional brain aromatase activity in males, but not females during the perinatal period of neurobehavioral sexual differentiation.
雌性灵长类动物大脑中[3H]睾酮和[3H]雌二醇的核积累:芳香化假说的证据。
DOI: 10.1210/endo-118-5-1935
发表时间: 1986
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影响因子: 4.8
作者:
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产前酒精暴露会改变大鼠成年后性别二态行为的表达。
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发表时间: 1984
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DOI: --
发表时间: 1979
期刊: Metabolism: Clinical and Experimental
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