Glucocorticoid receptor immunoreactivity in neurons and pituitary cells implicated in reproductive functions in rainbow trout: a double immunohistochemical study.

Glucocorticoid receptor immunoreactivity in neurons and pituitary cells implicated in reproductive functions in rainbow trout: a double immunohistochemical study.
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神经元和垂体细胞中的糖皮质激素受体免疫反应性与虹鳟鱼的生殖功能有关:双重免疫组织化学研究。

DOI:
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发表时间:
1999
影响因子:
3.6
通讯作者:
Olivier Kah
Olivier Kah
中科院分区:
生物学2区
文献类型:
--
作者:
C. Teitsma;I. Anglade;C. Lethimonier;Gwenola Le Dréan;D. Saligaut;B. Ducouret;Olivier Kah

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为了确定表达糖皮质激素受体(GR)的神经元和垂体细胞的性质,这些神经元和垂体细胞可能介导压力对生殖性能的负面影响,对虹鳟鱼(Oncorhynchus mykiss)的大脑和垂体进行了双重免疫组织化学染色。为了避免双染色研究期间可能发生的交叉反应,使用了在不同物种中产生的一抗的组合,我们在此报告了在豚鼠中产生的针对虹鳟糖皮质激素受体(rtGR)的抗体的产生。在卵黄发生雌性中获得的结果表明,尾端端脑/前视前区中的 GnRH 阳性神经元始终表现出 rtGR 免疫反应性。同样,在前腹侧视前区,一组酪氨酸羟化酶阳性神经元(以在卵黄形成过程中抑制促性腺激素(GTH)-2 分泌而闻名)一致显示强烈表达 GR。最后,我们发现垂体的绝大多数 GTH-1(FSH 样)和 GTH-2(LH 样)细胞表现出 rtGR 免疫反应性。这些结果表明皮质醇可能影响虹鳟鱼生殖过程多个部位的神经内分泌控制。
In order to identify the nature of the glucocorticoid receptor (GR)-expressing neurons and pituitary cells that potentially mediate the negative effects of stress on reproductive performance, double immunohistochemical stainings were performed in the brain and pituitary of the rainbow trout (Oncorhynchus mykiss). To avoid possible cross-reactions during the double staining studies, combinations of primary antibodies raised in different species were used, and we report here the generation of an antibody raised in guinea pig against the rainbow trout glucocorticoid receptor (rtGR). The results obtained in vitellogenic females showed that GnRH-positive neurons in the caudal telencephalon/anterior preoptic region consistently exhibited rtGR immunoreactivity. Similarly, in the anterior ventral preoptic region, a group of tyrosine hydroxylase-positive neurons, known for inhibiting gonadotropin (GTH)-2 secretion during vitellogenesis, was consistently shown to strongly express GR. Finally, we show that a large majority of the GTH-1 (FSH-like) and GTH-2 (LH-like) cells of the pituitary exhibit rtGR immunoreactivity. These results indicate that cortisol may affect the neuroendocrine control of the reproductive process of the rainbow trout at multiple sites.
硬骨鱼糖皮质激素受体的克隆表明,它含有与哺乳动物不同的脱氧核糖核酸结合结构域。
DOI: 10.1210/endo.136.9.7649084
发表时间: 1995
期刊: Endocrinology.
影响因子: --
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发表时间: 1994
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发表时间: 1987
影响因子: 11.1
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DOI: 10.1210/edrv-13-1-105
发表时间: 1992
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影响因子: 20.3
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