| Literature DB >> 7737339 |
Abstract
The effects of vinpocetine and phenytoin on voltage-gated Na+ channels were examined on cultured cerebrocortical neurones of the rat using a conventional whole-cell patch-clamp method. Vinpocetine and phenytoin decreased Na+ currents in a concentration-dependent manner, with IC50 values of 44.2 +/- 14.6 and 50.5 +/- 17.4 microM, respectively. Both compounds shifted the voltage dependence of the steady-state inactivation of the channel in the hyperpolarising direction. This pronounced Na+ channel blocking activity may contribute to the neuroprotective and anticonvulsant effects of vinpocetine.Entities:
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Year: 1995 PMID: 7737339 DOI: 10.1016/0014-2999(94)00755-v
Source DB: PubMed Journal: Eur J Pharmacol ISSN: 0014-2999 Impact factor: 4.432