Endothelin in perivascular nerves. An electronimmunocytochemical study of rat basilar artery
作者:
Andrzej Loesch,
Pamela Milner,
Geoffrey Burnstock,
期刊:
NeuroReport
(OVID Available online 1998)
卷期:
Volume 9,
issue 17
页码: 3903-3904
ISSN:0959-4965
年代: 1998
出版商: OVID
关键词: Basilar artery;Endothelin;Perivascular nerves;Rat;Ultrastructure
数据来源: OVID
摘要:
THE endothelium is recognized as a major source of endothelin in the vasculature. In this report we show for the first time that endothelin can be demonstrated with immunoelectronmicroscopy in perivascular nerves. About 36% of the axon profiles (varicosity/intervaricosity) examined in the rat basilar artery showed immunolabelling with a polyclonal antibody to endothelin-1. Endothelin-labelled axon varicosities were characterized by the presence of small spherical agranular vesicles (42 ± 1 nm); some varicosities also contained large granular vesicles (++ ±5 nm) with labelled cores. Immunolabelling was mostly distributed in the axoplasm and in association with the membrane of synaptic vesicles (the lumen of the small agranular vesicles was immuno-negative). The presence of endothelin in perivascular nerves of the basilar artery suggests a neuronal as well as endothelial role in the physiological control of the vessel wall.
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