IMMUNOCYTOCHEMICAL IDENTIFICATION OF THE MESOTOCIN-PRODUCING AND VASOTOCIN-PRODUCING SYSTEMS IN THE BRAIN OF TEMPERATE AND DESERT LIZARD SPECIES AND THEIR MODIFICATIONS BY COLD-EXPOSURE
IMMUNOCYTOCHEMICAL IDENTIFICATION OF THE MESOTOCIN-PRODUCING AND VASOTOCIN-PRODUCING SYSTEMS IN THE BRAIN OF TEMPERATE AND DESERT LIZARD SPECIES AND THEIR MODIFICATIONS BY COLD-EXPOSURE
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DOI：
10.1016/0016-6480(83)90158-2
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发表时间：
1983-01-01
影响因子：
2.7
通讯作者：
BONS, N
中科院分区：
文献类型：
--
作者：
BONS, N
使用免疫荧光技术，中催产素（MT）和催产素（VT）的神经分泌系统中确定了不同的蜥蜴：1温带物种生活在法国南部和3沙漠物种来自阿尔及利亚南部的大脑。在这4种动物中，MT和VT均在前视前区（POA）、视上核（SON）、室旁核（PVN）和腹内侧核（VMN）的特定神经元中合成。POA神经元的神经分泌轴突终止于终板附近;在3个沙漠物种中，几个额外的VT纤维延伸更rostrally，进入嗅球。起源于SON、PVN和VMN的轴突终止于靠近腺垂体门脉血管的嘴侧正中隆起（ME）的外带，或终止于垂体的神经叶。短时间暴露于寒冷（4度）在某些蜥蜴标本中，引起PVN的背侧和腹侧部分的不同反应。而背侧部分保持不变，腹侧部分，而不是似乎基本上是由小神经元的分泌颗粒无效。冷暴露也导致MT和VT在ME的内部区域中的显著积累，但仅VT在外部ME区域中。另一方面，MT在腺垂体细胞中出现显著量。
Using immunofluorescent techniques, mesotocin (MT) and vasotocin (VT) neurosecretory systems were identified in the brain of different lizards: 1 temperate species living in southern France and 3 desert species coming from southern Algeria. In the 4 species, MT and VT were synthesized in specific neurons located in the anterior preoptic area (POA), the suraoptic (SON), paraventricular (PVN), and ventromedial (VMN) nuclei. The neurosecretory axons of the POA neurons terminated in the vicinity of the lamina terminalis; in the 3 desert species, several additional VT fibers extended more rostrally, going into the olfactory bulb. The axons originating in SON, PVN, and VMN ended either in the external zone of the rostral median eminence (ME) near the adenohypophyseal portal vessels, or in the neural lobe of the hypophysis. A short exposure to cold (4.degree.) in some specimens of Lacerta muralis induced a differential response in the dorsal and ventral parts of the PVN. Whereas the dorsal part remained unchanged, the ventral part instead appeared to be essentially composed of small neurons void of secretory granules. Cold exposure also led to a marked accumulation of both MT and VT in the internal zone of the ME, but of only VT in the external ME zone. On the other hand, a conspicuous amount of MT appeared in adenohypophyseal cells.