Brain Res. 1990 Jul 16;523(1):127-33.

Ultrastructural evidence for a close relationship between dopamine cell processes and blood capillary walls in Macaca monkey and rat retina.

Favard C, Simon A, Vigny A, Nguyen-Legros J.

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Laboratoire de Neuro-Cytologie Oculaire, I.N.S.E.R.M.U.-86, Paris, France.

Abstract

In the retina, tyrosine-hydroxylase (TH) antiserum specifically labels intrinsic dopamine (DA)-neurons. In order to clarify the relationship between capillaries and DA-processes already observed by light microscopy, we have performed TH-immunocytochemistry on rat and monkey retinas at the electron microscope level. Close contacts were observed between DA-varicosities and the basal lamina of both pericytes and endothelial cells. As in the brain, these anatomical findings suggest that intrinsic DA-neurons could contribute to the regulation of local retinal blood flow and/or permeability.

PMID:: 1976418; [PubMed - indexed for MEDLINE]

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Tyrosine 3-Monooxygenase

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