SUBSTANCE-P IN RAT CORNEAL AND IRIDAL NERVES - AN ULTRASTRUCTURAL IMMUNOHISTOCHEMICAL STUDY

被引:33
作者
BECKERS, HJM [1 ]
KLOOSTER, J [1 ]
VRENSEN, GFJM [1 ]
LAMERS, WPMA [1 ]
机构
[1] UNIV LIMBURG,DEPT OPHTHALMOL,6200 MD MAASTRICHT,NETHERLANDS
关键词
SUBSTANCE-P; CALCITONIN GENE-RELATED PEPTIDE; CORNEA; IRIS; IMMUNOHISTOCHEMISTRY;
D O I
10.1159/000267291
中图分类号
R77 [眼科学];
学科分类号
100212 ;
摘要
The distribution of substance P (SP) within the nerve fibers of the rat cornea and iris was studied using electron microscopic immunohistochemistry. Numerous SP-immunoreactive fibers were found throughout the corneal and iridal stroma. The most intense staining was found within varicosities containing numerous vesicles. Similar SP-immunoreactive varicosities were found in fibers in close proximity to the iris sphincter and dilator muscles. On account of previous ultrastructural work the SP-containing fibers and varicosities must be assumed to be of trigeminal origin. Additionally, the distribution of SP and calcitonin gene-related peptide (CGRP) in corneal and iridal fibers of rats is similar, suggesting that CGRP and SP are colocalized and may be coreleased from the same varicosities.
引用
收藏
页码:192 / 200
页数:9
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