The influence of light and dark on the catecholamine content of the retina and choroid.
The influence of light and dark on the catecholamine content of the retina and choroid.
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光和暗对视网膜和脉络膜儿茶酚胺含量的影响。
DOI：
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发表时间：
1967
期刊：
影响因子：
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通讯作者：
M. Hottenstein
中科院分区：
文献类型：
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作者：
C. Nichols;D. Jacobowitz;M. Hottenstein
最近的组织化学研究与荧光法检测含儿茶酚胺的神经元发现了一个系统的多巴胺含无长突细胞toell作为一个丛的去甲肾上腺素含神经末梢在脉络膜。本研究用定量和组织化学方法观察了暗适应和光适应对白化病豚鼠、兔和大鼠眼后段儿茶酚胺含量的影响。在大鼠和家兔中，随着光适应，多巴胺含量显著增加。在豚鼠中，有增加，但这不具有统计学显著性。豚鼠和家兔在光适应后眼后段的去甲肾上腺素含量明显增加。去甲肾上腺素的增加似乎是对脉络膜神经末梢的直接影响，因为在有色豚鼠中未观察到增加。同样地，白化病豚鼠脉络膜的分散化并没有改变光适应的变化。组织化学研究表明，一致增加的荧光无长突细胞的兔和豚鼠与光适应。在大鼠中不可能显示一致的变化。
Recent histochemical studies with the use of a fluorescence method to detect catecholaminecontaining neurons have uncovered a system of dopamine-containing amacrine cells as toell as a plexus of norepinephrine-containing nerve terminals in the choroid. This study examined the effect of dark and light adaptation on the catecholamine content of the posterior segment of the eye of the albino guinea pig, rabbit, and rat by quantitative and histochemical means. In the rat and rabbit, there was a significant increase in the dopamine content with light adaptation. In the guinea pig, there was an increase, but this was not statistically significant. A significant increase in the norepinephrine content was observed in the posterior segment of the guinea pig and rabbit ivith light adaptation. The increase in norepinephrine appeared to be a direct effect on the choroidal nerve terminals, since with pigmented guinea pigs the increase was not observed. Likewise, decentralization of the choroid in albino guinea pigs did not alter the changes seen with light adaptation. Histochemical studies demonstrated a consistent increase in the fluorescence of the amacrine cells of the rabbit and guinea pig with light adaptation. It was not possible to show consistent changes in the rat.