Roles for oestrogen receptor β in adult brain function.

Roles for oestrogen receptor β in adult brain function.
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DOI:
10.1111/j.1365-2826.2011.02206.x
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发表时间:
2012-01
影响因子:
3.2
通讯作者:
Herbison AE
Herbison AE
中科院分区:
医学3区
文献类型:
--
作者:
Handa RJ;Ogawa S;Wang JM;Herbison AE

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雌二醇对多个脑回路产生深远的影响。在大多数情况下,这些作用由雌激素受体(ER)α介导。我们在此综述雌激素受体β,另一种雌激素受体亚型,在介导啮齿动物雌激素调节的焦虑,攻击和性行为,促性腺激素分泌的控制,以及成年神经发生中的作用。有证据表明:(i)ERβ位于室旁核,支持雌二醇对应激轴和焦虑样行为的抑制作用;(ii)ERβ表达于促性腺激素释放激素神经元,有助于雌激素负反馈控制促性腺激素分泌;(iii)ERβ控制脊柱前凸行为的偏移;(iv)ERβ抑制男性的攻击行为;(v)ERβ调节对社会刺激的反应;(vi)ERβ在控制成体神经发生中的作用。这篇综述强调了两个主要主题:首先,ERβ和ERα通常在特定脑功能的雌二醇依赖性控制中紧密相关。例如,尽管雌二醇反馈控制生殖主要通过ERα依赖性机制发生,但ERβ的调节作用也存在。第二,ERα和ERβ在特定神经网络中的作用可能是协同的或拮抗的。后者的例子包括ERα增强和ERβ抑制焦虑样和攻击性行为的作用。剪接变异体如ERβ2作为显性负性受体,由于其表达水平可能反映了与雌二醇替代治疗相关的先前雌二醇暴露,因此受到特别关注。总之,这篇综述强调了ERβ在介导雌二醇对成人脑功能的许多影响中的主要调节作用,但仍然很重要。
Oestradiol exerts a profound influence upon multiple brain circuits. For the most part, these effects are mediated by oestrogen receptor (ER)α. We review here the roles of ERβ, the other ER isoform, in mediating rodent oestradiol-regulated anxiety, aggressive and sexual behaviours, the control of gonadotrophin secretion, and adult neurogenesis. Evidence exists for: (i) ERβ located in the paraventricular nucleus underpinning the suppressive influence of oestradiol on the stress axis and anxiety-like behaviour; (ii) ERβ expressed in gonadotrophin-releasing hormone neurones contributing to oestrogen negative-feedback control of gonadotrophin secretion; (iii) ERβ controlling the offset of lordosis behaviour; (iv) ERβ suppressing aggressive behaviour in males; (v) ERβ modulating responses to social stimuli; and (vi) ERβ in controlling adult neurogenesis. This review highlights two major themes; first, ERβ and ERα are usually tightly inter-related in the oestradiol-dependent control of a particular brain function. For example, even though oestradiol feedback to control reproduction occurs principally through ERα-dependent mechanisms, modulatory roles for ERβ also exist. Second, the roles of ERα and ERβ within a particular neural network may be synergistic or antagonistic. Examples of the latter include the role of ERα to enhance, and ERβ to suppress, anxiety-like and aggressive behaviours. Splice variants such as ERβ2, acting as dominant negative receptors, are of further particular interest because their expression levels may reflect preceeding oestradiol exposure of relevance to oestradiol replacement therapy. Together, this review highlights the predominant modulatory, but nonetheless important, roles of ERβ in mediating the many effects of oestradiol upon adult brain function.
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发表时间: 2003-06-01
影响因子: --
作者:
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