PMID- 18048953 OWN - NLM STAT- MEDLINE DCOM- 20081118 LR - 20200106 IS - 1734-1140 (Print) IS - 1734-1140 (Linking) VI - 59 IP - 5 DP - 2007 Sep-Oct TI - Effects of some new antiepileptic drugs and progabide on glucocorticoid receptor-mediated gene transcription in LMCAT cells. PG - 531-7 AB - Antiepileptic drugs affect endocrine and immune system activity, however, it is not clear whether these effects are indirect, via interference with neurotransmitters, membrane receptors and ion channels or maybe independent of neuronal mechanisms. In order to shed more light on this problem, in the present study, we evaluated effects of some new-generation antiepileptic drugs and progabide as a GABA-mimetic on the corticosterone-induced chloramphenicol acetyltransferase (CAT) activity in mouse fibroblast cells stably transfected with mouse mammary tumor virus (MMTV)-CAT plasmid. Treatment of cells with felbamate for five days inhibited in a concentration-dependent manner (3-100 microM) the corticosterone-induced reporter gene transcription. Progabide and loreclezole also inhibited the corticosterone-induced CAT activity, but with lower potency, and significant effects were observed at 10 to 100 microM concentration. Tiagabine and stiripentol showed less potent inhibitory effect on functional activity of glucocorticoid receptors (GR). In contrast, topiramate and lamotrigine (3-100 microM) failed to affect the corticosterone-induced gene transcription. These data indicate that some new antiepileptic drugs and progabide may suppress glucocorticoid effects via the inhibition of GR-mediated gene transcription. In turn, attenuation of GR function could influence antiepileptic drug effect on seizures, neuronal degeneration and immune system activity. FAU - Basta-Kaim, Agnieszka AU - Basta-Kaim A AD - Department of Experimental Neuroendocrinology, Institute of Pharmacology, Polish Academy of Sciences, Smetna 12, PL 31-343 Krakow, Poland. FAU - Budziszewska, Boguslawa AU - Budziszewska B FAU - Leskiewicz, Monika AU - Leskiewicz M FAU - Regulska, Magdalena AU - Regulska M FAU - Otczyk, Magdalena AU - Otczyk M FAU - Kubera, Marta AU - Kubera M FAU - Jagla, Grzegorz AU - Jagla G FAU - Nowak, Wojciech AU - Nowak W FAU - Luszczki, Jarogniew J J AU - Luszczki JJ FAU - Czuczwar, Stanislaw J AU - Czuczwar SJ FAU - Lason, Wladyslaw AU - Lason W LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Switzerland TA - Pharmacol Rep JT - Pharmacological reports : PR JID - 101234999 RN - 0 (Anticonvulsants) RN - 0 (Receptors, Glucocorticoid) RN - 38C836J57Z (progabide) RN - 56-12-2 (gamma-Aminobutyric Acid) RN - EC 2.3.1.28 (Chloramphenicol O-Acetyltransferase) RN - W980KJ009P (Corticosterone) SB - IM MH - Animals MH - Anticonvulsants/*pharmacology MH - Cell Line, Tumor MH - Chloramphenicol O-Acetyltransferase/*biosynthesis/genetics MH - Corticosterone/pharmacology MH - Dose-Response Relationship, Drug MH - Fibroblasts/enzymology MH - Genes, Reporter MH - Mammary Tumor Virus, Mouse/genetics MH - Mice MH - Receptors, Glucocorticoid/*physiology MH - Transcription, Genetic/*drug effects MH - Transfection MH - gamma-Aminobutyric Acid/*analogs & derivatives/pharmacology EDAT- 2007/12/01 09:00 MHDA- 2008/11/19 09:00 CRDT- 2007/12/01 09:00 PHST- 2007/08/31 00:00 [received] PHST- 2007/10/05 00:00 [revised] PHST- 2007/12/01 09:00 [pubmed] PHST- 2008/11/19 09:00 [medline] PHST- 2007/12/01 09:00 [entrez] PST - ppublish SO - Pharmacol Rep. 2007 Sep-Oct;59(5):531-7.