Influence of tissue integrity on pharmacological phenotypes of muscarinic acetylcholine receptors in the rat cerebral cortex.

Abstract excerpt

Distinct pharmacological phenotypes of muscarinic acetylcholine receptors (mAChRs) have been proposed. We compared the pharmacological profiles of mAChRs in intact segments and homogenates of rat cerebral cortex and other tissues by using radioligand binding assays with [(3)H]N-methylscopolamine ([(3)H]NMS). Recombinant M(1) and M(3) mAChRs were also examined. The density of mAChRs detected by [(3)H]NMS binding...

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