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  • Title: Recovery of alpha 2-adrenoceptor binding and function after irreversible inactivation by N-ethoxycarbonyl-2-ethoxy-1,2-dihydroquinoline (EEDQ).
    Author: Adler CH, Meller E, Goldstein M.
    Journal: Eur J Pharmacol; 1985 Oct 08; 116(1-2):175-8. PubMed ID: 2865161.
    Abstract:
    Treatment of rats with N-ethoxycarbonyl-2-ethoxy-1,2-dihydroquinoline (EEDQ) resulted in a pronounced loss of alpha 2-adrenoceptor binding ( [3H]RX-781094) and a marked reduction in the ability of the alpha 2-agonist UK-14,304 to inhibit K+-stimulated release of both [3H]NA and [3H]5-HT in cerebral cortex. Repopulation of alpha 2-adrenoceptors was monoexponential with a t1/2 of 4.1 days; functional recovery was also monoexponential, with t1/2 values of 2.4 and 4.6 days for restoration of alpha 2-mediated inhibition of [3H]NA and [3H]5-HT release, respectively. Other studies suggest the difference in functional recovery rate may reflect the presence of a large receptor reserve for autoreceptors relative to heteroreceptors.
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