PMID- 9079771 OWN - NLM STAT- MEDLINE DCOM- 19970613 LR - 20190826 IS - 0166-4328 (Print) IS - 0166-4328 (Linking) VI - 84 IP - 1-2 DP - 1997 Mar TI - Kainic acid lesions enhance locomotor responses to novelty, saline, amphetamine, and MK-801. PG - 47-55 AB - Intracerebroventricular (i.c.v.) administration of kainic acid (KA) to rats produces neuronal loss in the hippocampus and other areas of the limbic system. The present study demonstrates that i.c.v. KA enhances the locomotor response to novelty and saline injection, as well as to amphetamine and MK-801. Sixteen to 18 days after i.c.v. administration of KA or vehicle, lesioned and control rats were placed in a novel cage, and locomotor activity and grooming were recorded for 30 min prior to and 60 min following a subcutaneous injection of saline, D-amphetamine, or MK-801. In response to the novel cage and after each injection, KA rats exhibited increased locomotor activity relative to controls. Grooming behavior was found to be elevated in the KA rats when compared to controls, but only in response to the novel cage and saline injection. The possibility that damage to the limbic system disrupts dopaminergic regulation of locomotor behavior is discussed, as well as implications for neuropathology in schizophrenia. FAU - Bardgett, M E AU - Bardgett ME AD - Department of Psychiatry, Washington University School of Medicine, St. Louis, MO 63110-1093, USA. bardgetm@medicine.wustl.edu FAU - Jacobs, P S AU - Jacobs PS FAU - Jackson, J L AU - Jackson JL FAU - Csernansky, J G AU - Csernansky JG LA - eng PT - Journal Article PL - Netherlands TA - Behav Brain Res JT - Behavioural brain research JID - 8004872 RN - 0 (Dopamine Uptake Inhibitors) RN - 0 (Excitatory Amino Acid Agonists) RN - 0 (Excitatory Amino Acid Antagonists) RN - 6LR8C1B66Q (Dizocilpine Maleate) RN - SIV03811UC (Kainic Acid) RN - TZ47U051FI (Dextroamphetamine) SB - IM MH - Animals MH - Dextroamphetamine/pharmacology MH - Dizocilpine Maleate/pharmacology MH - Dopamine Uptake Inhibitors/pharmacology MH - *Environment MH - Excitatory Amino Acid Agonists/*toxicity MH - Excitatory Amino Acid Antagonists/pharmacology MH - Grooming/drug effects MH - Hippocampus/cytology/drug effects MH - Injections, Intraventricular MH - Kainic Acid/*toxicity MH - Male MH - Motor Activity/*drug effects MH - Rats MH - Rats, Sprague-Dawley EDAT- 1997/03/01 00:00 MHDA- 1997/03/01 00:01 CRDT- 1997/03/01 00:00 PHST- 1997/03/01 00:00 [pubmed] PHST- 1997/03/01 00:01 [medline] PHST- 1997/03/01 00:00 [entrez] AID - S0166-4328(96)00132-5 [pii] AID - 10.1016/s0166-4328(96)00132-5 [doi] PST - ppublish SO - Behav Brain Res. 1997 Mar;84(1-2):47-55. doi: 10.1016/s0166-4328(96)00132-5.