THE INFLUENCE OF LEVETIRACTEAM AND DIAZEPAM ON PENICILLIN-INDUCED FOCAL EPILEPTIC ACTIVITY
DOI:
https://doi.org/10.14739/2310-1210.2014.6.35861Keywords:
Diazepam, Penicillin G, Anticonvulsants, EpilepsyAbstract
Aim. The power of epileptic foci and their life-span in Wistar rats (44 animals) were investigated under conditions of levetiracetam (30,0 and 130,0 mg/kg, i.p.) and diazepam (0,5 and 1,5 mg/kg, i.p.) treatment in acute experiments.
Methods and results. Penicillin – induced (15.000 IU/ml) epileptic foci in rat’s cortex were suppressed by levetiracetam (30,0 and 130 mg/kg, i.p.) with the net reduction of focal epileptic power registered in 120 (by 26,8%) and 30 min (by 48,4 %) from the moment of epileptogen application correspondently. Diazepam (0,5 and 1,5 mg/kg, i.p.) being administered at the height of focal epileptoigenesis, reduced focal activity in 15,0 and 5,0 min by 41,4 and 46,8% correspondently. In 5,0 min from the moment of diazepam administration (1,5 mg/kg, i.p.), which was made after preliminary (in 30 min) treatment with LVR (30,0 mg/kg, i.p.) was followed by 3,7 times reduction of power of focal epileptic activity, when compared with control group (P<0,05).
Conclusion. The life-span of focal activity under conditions of combined usage of LVR and diazepam was reduced up to 110,5+11,2 min from 270,5+ 24,5 min in control group (P<0,05).
References
- Zenkov, L. R. (2012) Generalizovannye e`pilepsii: sovremennye koncepcii i terapevticheskie podkhody [Generalized epilepsy: contemporary conceptions and therapeutical approaches]. Nevrologiya, nejropsikhiatriya, psikhosomatika, 1, 72–82. [in Russian].
- Mazarati, A. M., Baldwin, R., Klitgaard, H., et al. (2004) Anticonvulsant effects of levetiracetam and levetiracetam-diazepam combinations in experimental status epilepticus. Epilepsy Res., 58 (2–3), 167–174.
- Czapinski, P., Blaszczyk, B., & Czuczwar, S. J. (2005) Mechanisms of Action of Antiepileptic Drugs. Current Topics in Medicinal Chemistry, 5, 3–14.
- De Smedt, T., Raedt, R., Vonck, K., & Boon, P. (2007) Levetiracetam: the profile of a novel anticonvulsant drug-part I: preclinical data. CNS Drug Rev., 13, 3–56.
- Arık, A. E., Bağırıcı, F., Sefil, F., & Marangoz, C. (2014) Effect of levetiracetam on penicillin induced epileptic activity in rats. Acta Neurobiol. Exp, 74, 266–275.
- Rigo, J. M., Hans, G., Nquyen, L., et al. (2002) The antiepileptic drug levetiracetam reverses the inhibition by negative allosteric modulators of neuronal GABA- and glycine-gated currents. Br. J. Pharmacol., 136, 659–672. doi: 10.1038/sj.bjp.0704766.
- Castel-Branco, M. M., Alves, G. L., Figueiredo, I. V. et al. (2009) The maximal electroshock seizures (MES) model in the preclinical assesment of potential new antiepileptic drugs. Methods Find. Exp. Clin. Pharmacol., 31(2), 101–106. doi: 10.1358/mf.2009.31.2.1338414.
- Vogl, C., Mochida, S., Wolff, C. et al. (2012) The synaptic vesicle glycoprotein 2A ligand levetiracetam inhibits presynaptic Ca2+ channels through an intracellular pathway. Mol. Pharmacol., 82, 199–208. doi: 10.1124/mol.111.076687.
- Loescher, W. (2011) Critical review of current animal models of seizures and epilepsy used in the discovery and development of new antiepileptic drugs. Seizure, 20, 359–368. doi: 10.1016/j.seizure.2011.01.003.
- Lukyanetz, E. A. Shkryl, V. M., & Kostyuk, P. G. (2002) Selective blockade of N-type calcium channels by levetiracetam. Epilepsia, 43, 9–18. doi: 10.1046/j.1528-1157.2002.24501.x.
- Modur, P. N., Miller, W. E., & Zhang, S. (2010) Sequential intrarectal diazepam and intravenous levetiracetam in treating acute repetitive and prolonged seizures. Epilepsia, 51(6), 1078–1082. doi: 10.1111/j.1528-1167.2009.02385.x.
- Nagarkatti, N., Deshpande, L. S., & DeLorenzo, R. J. (2008) Levetiracetam inhibits both ryanodine and IP3 receptor activated calcium induced calcium release in hippocampal neurons in culture. Neurosci. Lett., 436, 289–293. doi: 10.1016/j.neulet.2008.02.076.
- Meador, K. J., Gevin, A., Leese, P. T., et al. (2011) Neurocognitive effects of brivaracetam, levetiracetam, and lorazepam. Epilepsia, 52(2), 264–272. doi: 10.1111/j.1528-1167.2010.02746.x.
Downloads
How to Cite
Issue
Section
License
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal. 



