LABELING OF RETINA AND OPTIC TECTUM PHOSPHOLIPIDS IN CHICKENS EXPOSED TO LIGHT OR DARK

被引:22
作者
GUIDO, ME [1 ]
CAPUTTO, BL [1 ]
机构
[1] NATL UNIV CORDOBA,CONSEJO NACL INVEST CIENTIF & TECN,FAC CIENCIAS QUIM,CIQUIBIC,RA-5016 CORDOBA,ARGENTINA
关键词
Chick retina ganglion cells; Light perception and phospholipid metabolism; Phospholipids; Phospholipids and light stimulation; Sensorial stimulation;
D O I
10.1111/j.1471-4159.1990.tb05768.x
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Abstract: The labeling of retina ganglion cell and optic tectum phospholipids was determined in chickens given an intraocular injection of 32P and then either exposed to light or maintained in the dark. Significantly higher labeling was found in the optic tectum phospholipids of light‐exposed compared with dark‐maintained animals after 3–24 h of labeling. In the ganglion cells, the labeling of phospholipids increased in dark with respect to light at 15 and 30 min of labeling; from 60 min to 24 h, the labeling of phospholipids was significantly higher in light with respect to dark, even if the precursor pool showed a higher labeling in dark at all times studied. When labeling was allowed to proceed in the dark for 30 min and then half of the animals were exposed to light for 15 min, the labeling of ganglion cell phospholipids of light‐exposed animals was significantly higher than those of animals kept in the dark. No individual phospholipid accounted for the differences observed in the labeling of the total phospholipid pool. These results are interpreted as an increase in the biosynthesis of phospholipids in the ganglion cell somas in light with respect to dark. Copyright © 1990, Wiley Blackwell. All rights reserved
引用
收藏
页码:1855 / 1860
页数:6
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