3013364

Autoradiographic localization of high affinity GABA, benzodiazepine, dopaminergic, adrenergic and muscarinic cholinergic receptors in the rat, monkey and human retina.

Article date: 1986/5/21

PubMed ID: 3013364

Journal name: Brain research (ISSN: 0006-8993)

ABSTRACT

High affinity gamma-aminobutyric acid, benzodiazepine, strychnine (glycine), dopamine, spirodecanone, alpha 1-adrenergic, alpha 2-adrenergic, beta-adrenergic and muscarinic cholinergic binding sites were localized by semiquantitative autoradiography in rat and, in some instances, in monkey and human retinae using [3H]muscimol, [3H]flunitrazepam, [3H]strychnine, [3H]spiperone, [3H]prazosin, [3H]para-aminoclonidine, [3H]dihydroalprenolol and [3H]quinuclidinyl benzylate, respectively. In nearly every case, the inner plexiform layer (IP) contained a high receptor density. The distribution of alpha 1 sites was unusual in that binding was concentrated in the outer plexiform layer (OP). Dopaminergic and, to a lesser extent, beta-adrenergic binding was diffusely distributed in the outer nuclear layer, the OP, the inner nuclear layer and the IP. The ganglion cell layer displayed significant benzodiazepine binding. The intraretinal distribution of pre- and postsynaptic markers of these neurotransmitters is discussed.

This document is available from: http://directlinks.cc/files/muscimol/3013364.pdf

Author List: Zarbin M A, Wamsley J K, Palacios J M, Kuhar M J

Publication Types: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.

Substances mentioned in the article: Receptors, Adrenergic; Receptors, Dopamine; Receptors, GABA-A; Receptors, Muscarinic; Receptors, Serotonin; Strychnine;

Mesh terms: Aged; Animals; Autoradiography; Humans; Macaca fascicularis; Male; Photoreceptor Cells/analysis; Radioligand Assay; Rats; Receptors, Adrenergic/analysis; Receptors, Dopamine/analysis; Receptors, GABA-A/analysis; Receptors, Muscarinic/analysis; Receptors, Serotonin/metabolism; Retina/metabolism; Retinal Ganglion Cells/metabolism; Species Specificity; Strychnine/metabolism;

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