PMID- 11240586 OWN - NLM STAT- MEDLINE DCOM- 20010329 LR - 20190813 IS - 0013-9580 (Print) IS - 0013-9580 (Linking) VI - 42 IP - 2 DP - 2001 Feb TI - An animal model of nonconvulsive status epilepticus: a contribution to clinical controversies. PG - 171-80 AB - PURPOSE: To characterize electroencephalographic and behavioral effects as well as electrophysiologic and morphologic consequences of a subconvulsive dose of pilocarpine in lithium chloride-pretreated rats. METHODS: Pilocarpine (15 mg/kg) was administered intraperitoneally to adult rats pretreated with lithium chloride (3 mEq/kg, i.p.). Behavior was observed for 2 h and videotaped in three consecutive sessions. At the same time, EEG was recorded from the sensorimotor cortex and the dorsal hippocampus. Threshold intensities of currents necessary to elicit hippocampal afterdischarges were determined 24 h and 1 week after the pilocarpine administration. The brains were histologically examined 1 week after pilocarpine administration using Nissl stain. RESULTS: Pilocarpine induced time-limited nonconvulsive status epilepticus (NCSE). Epileptic EEG activity concurrent with prominent behavioral features was observed both in the neocortex and, predominantly, in the hippocampus. No changes in afterdischarge thresholds were observed in the dorsal hippocampus 24 h and 1 week after NCSE. One week after NCSE, seizure-related brain damage was found mainly in the motor neocortical fields. CONCLUSIONS: Pilocarpine-induced NCSE in rats strongly resembles a short-term human complex partial status epilepticus. Our animal model is suitable for studying the possible adverse effects of prolonged nonconvulsive seizures. FAU - Krsek, P AU - Krsek P AD - Institute of Physiology, Academy of Sciences of the Czech Republic, Videnska 1083, CZ-142 20 Prague 4, Czech Republic. FAU - Mikulecka, A AU - Mikulecka A FAU - Druga, R AU - Druga R FAU - Hlinak, Z AU - Hlinak Z FAU - Kubova, H AU - Kubova H FAU - Mares, P AU - Mares P LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Epilepsia JT - Epilepsia JID - 2983306R RN - 01MI4Q9DI3 (Pilocarpine) RN - G4962QA067 (Lithium Chloride) SB - IM MH - Animals MH - Behavior, Animal/*drug effects/physiology MH - *Disease Models, Animal MH - Electroencephalography/*drug effects/statistics & numerical data MH - Hippocampus/drug effects/physiopathology MH - Humans MH - Lithium Chloride/pharmacology MH - Male MH - Motor Activity/drug effects/physiology MH - Neocortex/drug effects/physiopathology MH - Pilocarpine/pharmacology MH - Rats MH - Rats, Wistar MH - Status Epilepticus/*chemically induced/diagnosis/*physiopathology MH - Videotape Recording EDAT- 2001/03/10 10:00 MHDA- 2001/04/03 10:01 CRDT- 2001/03/10 10:00 PHST- 2001/03/10 10:00 [pubmed] PHST- 2001/04/03 10:01 [medline] PHST- 2001/03/10 10:00 [entrez] AID - epi35799 [pii] AID - 10.1046/j.1528-1157.2001.35799.x [doi] PST - ppublish SO - Epilepsia. 2001 Feb;42(2):171-80. doi: 10.1046/j.1528-1157.2001.35799.x.