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首页> 外文期刊>Neuron >Site-specific retinoic acid production in the brain of adult songbirds.
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Site-specific retinoic acid production in the brain of adult songbirds.

机译:成年鸣禽的大脑中特定部位的视黄酸产生。

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摘要

The song system of songbirds, a set of brain nuclei necessary for song learning and production, has distinctive morphological and functional properties. Utilizing differential display, we searched for molecular components involved in song system regulation. We identified a cDNA (zRalDH) that encodes a class 1 aldehyde dehydrogenase. zRalDH was highly expressed in various song nuclei and synthesized retinoic acid efficiently. Brain areas expressing zRalDH generated retinoic acid. Within song nucleus HVC, only projection neurons not undergoing adult neurogenesis expressed zRalDH. Blocking zRalDH activity in the HVC of juveniles interfered with normal song development. Our results provide conclusive evidence for localized retinoic acid synthesis in an adult vertebrate brain and indicate that the retinoic acid-generating system plays a significant role in the maturation of a learned behavior.
机译:鸣禽的鸣叫系统是鸣叫学习和生产所必需的一组脑核,具有独特的形态和功能特性。利用差异显示,我们搜索了涉及歌曲系统调节的分子成分。我们确定了编码1类乙醛脱氢酶的cDNA(zRalDH)。 zRalDH在各种歌曲核中高表达,并有效合成视黄酸。表达zRalDH的大脑区域产生视黄酸。在歌曲核HVC中,仅未经历成年神经发生的投射神经元表达zRalDH。在青少年HVC中阻断zRalDH活性会干扰正常歌曲的发育。我们的结果为成年脊椎动物大脑中局部视黄酸合成提供了确凿的证据,并表明视黄酸生成系统在学习行为的成熟中起着重要作用。

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