PMID- 18843265 OWN - NLM STAT- MEDLINE DCOM- 20090617 LR - 20240312 IS - 1740-634X (Electronic) IS - 0893-133X (Print) IS - 0893-133X (Linking) VI - 34 IP - 6 DP - 2009 May TI - Effects of topiramate and other anti-glutamatergic drugs on the acute intoxicating actions of ethanol in mice: modulation by genetic strain and stress. PG - 1454-66 LID - 10.1038/npp.2008.182 [doi] AB - Compounds with anti-glutamatergic properties currently in clinical use for various indications (eg Alzheimer's disease, epilepsy, psychosis, mood disorders) have potential utility as novel treatments for alcoholism. Enhanced sensitivity to certain acute intoxicating effects (ataxia, sedative) of alcohol may be one mechanism by which anti-glutamatergic drugs modulate alcohol use. We examined the effects of six compounds (memantine, dextromethorphan, haloperidol, lamotrigine, oxcarbazepine, and topiramate) on sensitivity to acute intoxicating effects of ethanol (ataxia, hypothermia, sedation/hypnosis) in C57BL/6J mice. Analysis of topiramate was extended to determine the influence of genetic background (by comparison of the 129S1, BALB/cJ, C57BL/6J, DBA/2J inbred strains) and prior stress history (by chronic exposure of C57BL/6J to swim stress) on topiramate's effects on ethanol-induced sedation/hypnosis. Results showed that one N-methyl-D-aspartate receptor (NMDAR) antagonist, memantine, but not another, dextromethorphan, potentiated the ataxic but not hypothermic or sedative/hypnotic effects of ethanol. Haloperidol increased ethanol-induced ataxia and sedation/hypnosis to a similar extent as the prototypical NMDAR antagonist MK-801. Of the anticonvulsants tested, lamotrigine accentuated ethanol-induced sedation/hypnosis, whereas oxcarbazepine was without effect. Topiramate was without effect per se under baseline conditions in C57BL/6J, but had a synergistic effect with MK-801 on ethanol-induced sedation/hypnosis. Comparing inbred strains, topiramate was found to significantly potentiate ethanol's sedative/hypnotic effects in BALB/cJ, but not 129S1, C57BL/6J, or DBA/2J strains. Topiramate also increased ethanol-induced sedation/hypnosis in C57BL/6J after exposure to chronic stress exposure. Current data demonstrate that with the exception of MK-801 and haloperidol, the compounds tested had either no significant or assay-selective effects on sensitivity to acute ethanol under baseline conditions in C57BL/6J. However, significant effects of topiramate were revealed as a function of co-treatment with an NMDAR blocker, genetic background, or prior stress history. These findings raise the possibility that topiramate and possibly other anti-glutamatergic drugs could promote the acute intoxicating effects of ethanol in specific subpopulations defined by genetics or life history. FAU - Chen, Yi-Chyan AU - Chen YC AD - Department of Psychiatry, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan. FAU - Holmes, Andrew AU - Holmes A LA - eng GR - Z01 AA000411/ImNIH/Intramural NIH HHS/United States GR - Z01 AA000411-04/ImNIH/Intramural NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, N.I.H., Intramural DEP - 20081008 PL - England TA - Neuropsychopharmacology JT - Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology JID - 8904907 RN - 0 (Central Nervous System Depressants) RN - 0 (Excitatory Amino Acid Agents) RN - 0 (Triazines) RN - 0H73WJJ391 (Topiramate) RN - 30237-26-4 (Fructose) RN - 33CM23913M (Carbamazepine) RN - 3K9958V90M (Ethanol) RN - 7355X3ROTS (Dextromethorphan) RN - J6292F8L3D (Haloperidol) RN - U3H27498KS (Lamotrigine) RN - VZI5B1W380 (Oxcarbazepine) RN - W8O17SJF3T (Memantine) SB - IM MH - Alcoholic Intoxication/*drug therapy/*physiopathology MH - Animals MH - Ataxia/chemically induced/drug therapy MH - Carbamazepine/analogs & derivatives/pharmacology MH - Central Nervous System Depressants/*pharmacology MH - Conscious Sedation MH - Dextromethorphan/pharmacology MH - Ethanol/*toxicity MH - Excitatory Amino Acid Agents/*pharmacology MH - Fructose/*analogs & derivatives/pharmacology MH - Haloperidol/pharmacology MH - Hypothermia/chemically induced/drug therapy MH - Lamotrigine MH - Male MH - Memantine/pharmacology MH - Mice MH - Mice, Inbred BALB C MH - Mice, Inbred C57BL MH - Mice, Inbred DBA MH - Oxcarbazepine MH - Species Specificity MH - Stress, Psychological/physiopathology MH - Topiramate MH - Triazines/pharmacology PMC - PMC2669690 MID - NIHMS69362 EDAT- 2008/10/10 09:00 MHDA- 2009/06/18 09:00 PMCR- 2009/11/01 CRDT- 2008/10/10 09:00 PHST- 2008/10/10 09:00 [pubmed] PHST- 2009/06/18 09:00 [medline] PHST- 2008/10/10 09:00 [entrez] PHST- 2009/11/01 00:00 [pmc-release] AID - npp2008182 [pii] AID - 10.1038/npp.2008.182 [doi] PST - ppublish SO - Neuropsychopharmacology. 2009 May;34(6):1454-66. doi: 10.1038/npp.2008.182. Epub 2008 Oct 8.