Eur J Pharmacol. 1986 Apr 9;123(1):161-5.

The effects of some slow channel blocking drugs on high affinity serotonin uptake by rat brain synaptosomes.

Abstract

The effects of some slow channel blocking drugs were investigated on high affinity serotonin uptake into crude rat brain synaptosomes. Serotonin uptake was sodium-dependent and competitively inhibited by imipramine (IC50 0.6 microM, Ki 0.26 microM). Bepridil, verapamil and diltiazem produced an apparent competitive inhibition of serotonin uptake with respective IC50 of 4.8, 5.2 and 308 microM. Nitrendipine and the sodium channel blocker, lidocaine, were without effect, even at 100 microM. The mechanism of the inhibitory effect is unknown but may involve an allosteric interaction with the sodium-dependent transporter.

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Eur J Pharmacol. 1986 Apr 9 ;123(1):161-5.

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The effects of some slow channel blocking drugs on high affinity serotonin uptake by rat brain synaptosomes.

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