RESEARCH PAPER
Anticonvulsant activity of conventional antiepileptic drugs unaltered by vinpocetine in mouse model of epilepsy
More details
Hide details
1
Experimental Neuropathophysiology Unit, Department of Pathophysiology, Lublin
2
Department of Pharmacology and Clinical Pharmacology, Medical University, Lublin, Poland
J Pre Clin Clin Res. 2007;1(1):45-46
KEYWORDS
ABSTRACT
The objective of the study was to determine the effect of combined treatment with vinpocetine (VIN) (a commonly used nootropic drug blocking voltage-gated Na+ channels) and conventional antiepileptic drugs: carbamazepine (CBZ), valproate (VPA), phenobarbital (PB), and phenytoin (PHT) against maximal electroshock-induced convulsions in mice. Vinpocetine (up to 30 mg/kg) did not present either its own anticonvulsant action or have any effect on the protective effect of antiepileptic drugs. This may indicate that not all Na+ channel inhibitors are effective against electroconvulsions. On the other hand, concomitant treatment with vinpocetine and antiepileptics should not require any dose corrections in epileptic patients.
REFERENCES (10)
1.
Van Staveren WCG, Markerink Ittersum M, Steinbusch HW, de Vente J: The effects of phosphodiesterase inhibition on cyclic GMP and cyclic AMP accumulation in the hippocampus of the rat. Brain Res 2001, 888, 275-286.
2.
Molnar P, Erdo SL: Vinpocetine is as potent as phenytoin to block voltage-gated Na+ channels in rat cortical neurons. Eur J Pharmacol 1995, 273, 303-306.
3.
Sitges M, Galvan E, Nekrassov V: Vinpocetine blockade of sodium channels inhibits the rise in sodium and calcium induced by 4-aminopyridine in synaptosomes. Neurochem Int 2005, 46, 533- 540.
4.
Sitges M, Chiu LM, Nekrassov V: Single and combined effects of carbamazepine and vinpocetine on depolarization-induced changes in Na+, Ca2+ and glutamate release in hippocampal isolated nerve endings. Neurochem Int 2006, 49, 55-61.
5.
Abdel Salam OM: Vinpocetine and piracetam exert antinociceptive effect in visceral pain model in mice. Pharmacol Rep 2006, 58, 680-691.
6.
Dutov AA, Tolpyshev BA, Karpov VN, Petrov AP: Effects of Cavinton on convulsions caused by chemical substances. Farmakol Toksykol 1986, 49, 22-25.
7.
Schmidt J: Comparative studies on the anticonvulsant effectiveness of nootropic drugs in kindled rats. Biomed Biochim Acta 1990, 49, 413- 419.
8.
Nekrassov V, Sitges M: Additive effects of antiepileptic drugs and pentylenetetrazole on hearing. Neurosci Lett 2006, 406, 276-280.
9.
Boissier JR, Tardy J, Diverres JC: Une nouvelle methode simple pour explorer l’action tranquilisante: le test de la cheminee. Med. Exp 1960, 3, 81-84.
10.
Litchfield JT, Wilcoxon F: A simplified method of evaluating dose-effect experiments. J Pharmacol Exp Ther 1949, 96, 99-113.