Localization of nNOS in photoreceptor, bipolar and horizontal cells in turtle and rat retinas
作者:
Silke Haverkamp,
William Eldred,
期刊:
NeuroReport
(OVID Available online 1998)
卷期:
Volume 9,
issue 10
页码: 2231-2235
ISSN:0959-4965
年代: 1998
出版商: OVID
关键词: Bipolar cell;Electron microscopy;Horizontal cell;Immunocytochemistry;Neuronal nitric oxide synthase;Photoreceptor;Rat;Retina;Turtle
数据来源: OVID
摘要:
Neuronal nitric oxide synthase (nNOS), an enzyme that synthesizes NO, has been found in the outer retina using light microscopic immunocytochemistry, but its subcellular localization is unknown. We used electron immunocytochemistry to examine nNOS-like immunoreactivity (nNOS-LI) in the outer plexiform layer of turtle and rat retinas. In turtle, nNOS-LI was present in some bipolar and horizontal cell processes at photoreceptor ribbon synapses and at basal junctions between photoreceptors. In rat, nNOS-LI was present in some rod bipolar and B-type horizontal cell axon terminals at rod ribbon synapses. These results indicate that in vertebrates, NO is produced by all of the major nerve cell types in the outer retina at specific synaptic contacts.
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