PMID- 28461248 OWN - NLM STAT- MEDLINE DCOM- 20180319 LR - 20181113 IS - 1095-953X (Electronic) IS - 0969-9961 (Print) IS - 0969-9961 (Linking) VI - 104 DP - 2017 Aug TI - Simultaneous triple therapy for the treatment of status epilepticus. PG - 41-49 LID - S0969-9961(17)30100-6 [pii] LID - 10.1016/j.nbd.2017.04.019 [doi] AB - Early maladaptive internalization of synaptic GABA(A) receptors (GABA(A)R) and externalization of NMDA receptors (NMDAR) may explain the time-dependent loss of potency of standard anti-epileptic drugs (AED) in refractory status epilepticus (SE). We hypothesized that correcting the effects of changes in GABA(A)R and NMDAR would terminate SE, even when treatment is delayed 40 minutes. SE was induced in adult Sprague-Dawley rats with a high dose of lithium and pilocarpine. The GABA(A)R agonist midazolam, the NMDAR antagonist ketamine and the AED valproate were injected 40 min after SE onset in combination or as monotherapy. The midazolam-ketamine-valproate combination was more efficient than triple-dose midazolam, ketamine or valproate monotherapy or higher-dose dual therapy in reducing several parameters of SE severity. Triple therapy also reduced SE-induced acute neuronal injury and spatial memory deficits. In addition, simultaneous triple therapy was more efficient than sequential triple therapy: giving the three drugs simultaneously was more efficient at stopping seizures than the standard practice of giving them sequentially. Furthermore, midazolam-ketamine-valproate therapy suppressed seizures far better than the midazolam-fosphenytoin-valproate therapy, which follows evidence-based AES guidelines. These results show that a treatment aimed at correcting maladaptive GABA(A)R and NMDAR trafficking can reduce the severity of SE and its long-term consequences. CI - Published by Elsevier Inc. FAU - Niquet, Jerome AU - Niquet J AD - Department of Neurology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA; Epilepsy Research Laboratory (151), Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, CA, USA. Electronic address: jniquet@ucla.edu. FAU - Baldwin, Roger AU - Baldwin R AD - Epilepsy Research Laboratory (151), Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, CA, USA. FAU - Norman, Keith AU - Norman K AD - Epilepsy Research Laboratory (151), Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, CA, USA. FAU - Suchomelova, Lucie AU - Suchomelova L AD - Epilepsy Research Laboratory (151), Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, CA, USA. FAU - Lumley, Lucille AU - Lumley L AD - US Army Medical Research Institute of Chemical Defense (USAMRICD), 2900 Ricketts Point Rd., Aberdeen Proving Ground, MD 21010, USA. FAU - Wasterlain, Claude G AU - Wasterlain CG AD - Department of Neurology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA; Epilepsy Research Laboratory (151), Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, CA, USA; Brain Research Institute, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA. LA - eng GR - I01 BX000273/BX/BLRD VA/United States GR - U01 NS074926/NS/NINDS NIH HHS/United States PT - Journal Article DEP - 20170429 PL - United States TA - Neurobiol Dis JT - Neurobiology of disease JID - 9500169 RN - 0 (Anticonvulsants) RN - 01MI4Q9DI3 (Pilocarpine) RN - 614OI1Z5WI (Valproic Acid) RN - 6158TKW0C5 (Phenytoin) RN - B4SF212641 (fosphenytoin) RN - R60L0SM5BC (Midazolam) SB - IM MH - Animals MH - Anticonvulsants/*therapeutic use MH - Brain Waves/drug effects MH - Combined Modality Therapy MH - Disease Models, Animal MH - Dose-Response Relationship, Drug MH - Drug Therapy, Combination/methods MH - Electroencephalography MH - Male MH - Maze Learning/drug effects MH - Midazolam/therapeutic use MH - Neurons/drug effects/pathology MH - Phenytoin/analogs & derivatives/therapeutic use MH - Pilocarpine/toxicity MH - Rats MH - Rats, Sprague-Dawley MH - Status Epilepticus/*therapy MH - Treatment Outcome MH - Valproic Acid/therapeutic use PMC - PMC5504687 MID - NIHMS874077 OTO - NOTNLM OT - Cholinergic seizures OT - Ketamine OT - Midazolam OT - Refractory status epilepticus OT - Valproate COIS- Disclosure of Conflicts of Interest Jerome Niquet and Claude Wasterlain have a patent pending on polytherapy of cholinergic seizures (UC Case No. 2012-172-2). Other authors have no conflict of interest to disclose. EDAT- 2017/05/04 06:00 MHDA- 2018/03/20 06:00 PMCR- 2018/08/01 CRDT- 2017/05/03 06:00 PHST- 2017/01/12 00:00 [received] PHST- 2017/03/27 00:00 [revised] PHST- 2017/04/27 00:00 [accepted] PHST- 2017/05/04 06:00 [pubmed] PHST- 2018/03/20 06:00 [medline] PHST- 2017/05/03 06:00 [entrez] PHST- 2018/08/01 00:00 [pmc-release] AID - S0969-9961(17)30100-6 [pii] AID - 10.1016/j.nbd.2017.04.019 [doi] PST - ppublish SO - Neurobiol Dis. 2017 Aug;104:41-49. doi: 10.1016/j.nbd.2017.04.019. Epub 2017 Apr 29.