ULTRASTRUCTURAL CHANGES OF NEUROHYPOPHYSIS OF RAT AFTER CASTRATION

被引:42
作者
ZAMBRANO, D
DEROBERT.E
机构
[1] Departamento de Anatomía, Fisiología y Farmacología Experimental, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires
[2] Instituto de Anatomía General y Embriología, Facultad de Medicina, Universidad de Buenos Aires
来源
ZEITSCHRIFT FUR ZELLFORSCHUNG UND MIKROSKOPISCHE ANATOMIE | 1968年 / 86卷 / 01期
关键词
D O I
10.1007/BF00340357
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
The infundibular processes of the neurohypophysis of male and female rats were studied after different periods of castration. After seven days an increase in neurosecretory granules was observed. Two types of neurosecretory nerve endings were identified: dark ones, with dense neurosecretory elementary granules of 1600 A, and clear ones, with lighter neurosecretory granules of 1800 A. Protoplasmatic pituicytes showed a large increase in lipid granules together with a general hypertrophy. After one week of castration but with hormonal therapy the protoplasmatic pituicytes appeared normal or even showed less lipid granules than in the controls. With one month of castration the changes already mentioned in the nerve endings and pituicytes were more pronounced and after six months even more accentuated. Two types of neurosecretory nerve endings were clearly identified and the protoplasmatic pituicytes were loaded with lipid granules. The probable significance of the two different neurosecretory axons was discussed in relation to recent studies on the isolation of neurosecretory terminals from the neurohypophysis. The changes in the protoplasmatic pituicytes were considered in relation to the possible significance of the lipid granules. © 1968 Springer-Verlag.
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页码:14 / &
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