NDLI: Cytisine inhibits the protective activity of various classical and novel antiepileptic drugs against 6 Hz-induced psychomotor seizures in mice

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Psychopharmacology : Volume 234, Issue 1, January 2017

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Cytisine inhibits the protective activity of various classical and novel antiepileptic drugs against 6 Hz-induced psychomotor seizures in mice

Content Provider	Springer Nature Link
Author	Tutka, Piotr Kondrat Wróbel, Maria W. Zaluska, Katarzyna Żółkowska, Dorota Florek Łuszczki, Magdalena Łuszczki, Jarogniew J.
Copyright Year	2016
Abstract	Cytisine (CYT) is a partial agonist of brain α4β2 nicotinic acetylcholine receptors widely used in Central/Eastern Europe for smoking cessation.This study evaluated the effect of CYT on the ability of classical and novel antiepileptic drugs to prevent seizures evoked by the 6-Hz test, a model of psychomotor seizures in mice thought as a model of drug-resistant seizures.CYT administered intraperitoneally (i.p.) in a dose of 2 mg kg−1 significantly inhibited the anticonvulsant activity of lacosamide, levetiracetam, and pregabalin, increasing their median effective doses 50 (ED50) values from 6.88 to 10.52 mg kg−1 (P < 0.05) for lacosamide, from 22.08 to 38.26 mg kg−1 (P < 0.05) for levetiracetam, and from 40.48 to 64.61 mg kg−1 (P < 0.01) for pregabalin, respectively. There were no significant changes in total brain concentrations of lacosamide, levetiracetam, and pregabalin following CYT i.p. administration. CYT administered in a dose of 2 mg kg−1 failed to change the protective action of clobazam, clonazepam, phenobarbital, tiagabine, and valproate in the 6-Hz test. Neither CYT (2 mg kg−1) alone nor its combination with the anticonvulsant drugs (at their ED50 values from the 6-Hz test) affected motor coordination; skeletal muscular strength and long-term memory, as determined in the chimney; and grip strength and passive avoidance tests, respectively.CYT-evoked alterations in the protection provided by some antiepileptic drugs against seizures can be of serious concern for epileptic smokers, who might demonstrate therapeutic failure to lacosamide, levetiracetam, and pregabalin, resulting in possible breakthrough seizure attacks.
Starting Page	281
Ending Page	291
Page Count	11
File Format	PDF
ISSN	00333158
Journal	Psychopharmacology
Volume Number	234
Issue Number	2
e-ISSN	14322072
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-10-25
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cytisine Epilepsy Psychomotor seizures Smoking cessation Neurosciences Pharmacology/Toxicology Psychiatry
Content Type	Text
Resource Type	Article
Subject	Pharmacology

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