Koe BK, Koch SW, Lebel LA, Minor KW, Page MG. Sertraline, a selective inhibitor of serotonin uptake, induces subsensitivity of beta-adrenoceptor system of rat brain.
Eur J Pharmacol 1987;
141:187-94. [PMID:
2824215 DOI:
10.1016/0014-2999(87)90262-7]
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Abstract
Subacute administration (b.i.d. for 4 days) of sertraline, a potent and selective inhibitor of serotonin uptake, was found to reduce cyclic AMP generation by the norepinephrine receptor-coupled adenylate cyclase in rat limbic forebrain slices and decrease the number of beta-adrenoceptors in rat cerebral cortex without affecting the affinity of [3H]dihydroalprenolol binding. Co-administration of sertraline and the serotonin agonist, quipazine, at doses at which neither agent had an effect, resulted in desensitization of norepinephrine receptor-coupled adenylate cyclase and down-regulation of beta-adrenoceptors. These findings suggest that increased serotonergic activity may be involved in the induction of subsensitivity of the beta-adrenoceptor system of rat brain by sertraline.
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