Identification of subtypes of [3H]prazosin-labelled alpha 1 receptor binding sites in rat brain.

Abstract:

:Detailed antagonist competition curves for [3H]prazosin-labelled binding sites in rat cerebral cortex membranes reveal anomalous binding characteristics. Dihydroergocryptine and indoramine compete in a steep, monophasic manner while WB4101 and phentolamine exhibit shallow competition curves. Computer-assisted analysis of binding data indicate that both WB4101 and phentolamine discriminate identical subpopulations of [3H]prazosin binding sites, which each comprise approximately 50% of specific [3H]prazosin binding. These data suggest the presence of subtypes of [3H]prazosin-labelled alpha 1 adrenergic receptors in rat cerebral cortex.

journal_name

Eur J Pharmacol

authors

Morrow AL,Battaglia G,Norman AB,Creese I

doi

10.1016/0014-2999(85)90432-7

subject

Has Abstract

pub_date

1985-02-26 00:00:00

pages

285-7

issue

2

eissn

0014-2999

issn

1879-0712

pii

0014-2999(85)90432-7

journal_volume

109

pub_type

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