Effects of background color on GnRH and MCH levels in the barfin flounder brain
Effects of background color on GnRH and MCH levels in the barfin flounder brain
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DOI：
10.1016/j.ygcen.2007.03.007
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发表时间：
2008-01-01
影响因子：
2.7
通讯作者：
Takahashi, Akiyoshi
中科院分区：
文献类型：
--
作者：
Amiya, Noriko;Amano, Masafumi;Takahashi, Akiyoshi
研究了不同背景颜色对条斑星鲽脑内促性腺激素释放激素（GnRH）和黑色素浓集激素（MCH）含量的影响，探讨了GnRH和MCH在脑内的相互作用。从孵化后一个月开始，在白色或黑色水箱中饲养鱼约7个月。白色缸鱼脑和垂体中的MCH水平较高。相比之下，鸡GnRH-II（cGnRH-II）在大脑中的水平更高的黑缸鱼。背景颜色之间没有显着差异，在大脑中观察到鲑鱼GnRH和海鸟GnRH水平。此外，将在白色水箱中饲养的六个月龄的鱼转移到另一个白色或黑色水箱中。转移后第2天和第7天，黑缸鱼脑cGnRH-II水平高于白色缸鱼。免疫组化双染显示，下丘脑内有cGnRH-II免疫反应阳性（ir）纤维与MCH免疫反应阳性（ir）胞体紧密接触。这些结果表明，背景颜色不仅影响MCH水平，但也cGnRH-II水平在大脑中，并建议cGnRH-II可能发挥作用，在调节MCH神经功能，食物摄入量，在大脑中的barfin比目鱼。(C)2007年爱思唯尔公司All rights reserved.
Effects of background color on gonadotropin-releasing hormone (GnRH) and melanin-concentrating hormone (MCH) levels in the brain of the barfin flounder Verasper moseri were monitored to investigate the interaction of GnRH and MCH in the brain. Fish were reared in white or black tanks from one month after hatching for about 7 months. MCH levels in the brain and pituitary were higher in the white tank fish. In contrast, chicken GnRH-II (cGnRH-II) levels in the brain were higher in the black tank fish. No significant differences between background colors were observed in the brain concerning salmon GnRH and seabream GnRH levels. Furthermore, six-month-old fish that had been reared in white tank were transferred to another white or black tank. Brain cGnRH-II levels were higher in black tank fish than those in white tank at 2 and 7 days after the transfer. Double-staining immunohistochemistry showed that some cGnRH-II-immunoreactive (ir) fibers were in close contact with MCH-ir cell bodies in the hypothalamus. These results indicate that background color affects not only MCH levels but also cGnRH-II levels in the brain and suggest that cGnRH-II may play a role in the regulation of MCH neural function, food intake, in the brain of the barfin flounder. (C) 2007 Elsevier Inc. All rights reserved.