Summary
A series of alpha-adrenergic agonists and antagonists having diverse chemical structure was examined for both central and peripheral alpha1-adrenoceptor activity. The agonists tested included several novel aminotetralin derivatives which were potent and selective alpha1-agonists. Peripheral alpha1-activity was determined in the isolated rabbit ear artery; central alpha1-receptor affinity was measured as the ability to inhibit 3H-WB 4101 binding to rat brain homogenates. In the agonist series, an excellent correlation between peripheral alpha1-activity and central alpha1-affinity was obtained, providing that partial agonists were excluded. Likewise, the receptor dissociation constant for blockade of the peripheral alpha1-adrenoceptor correlated well with affinity for the central receptor for all of the alphaantagonists. These data support the conclusion that central and peripheral alpha1-adrenoceptors are similar or identical.
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Hieble, J.P., Sarau, H.M., Foley, J.J. et al. Comparison of central and peripheral alpha1-adrenoceptors. Naunyn-Schmiedeberg's Arch. Pharmacol. 318, 267–273 (1982). https://doi.org/10.1007/BF00501164
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DOI: https://doi.org/10.1007/BF00501164