PMID- 10836492 OWN - NLM STAT- MEDLINE DCOM- 20000925 LR - 20190910 IS - 0278-5846 (Print) IS - 0278-5846 (Linking) VI - 24 IP - 3 DP - 2000 Apr TI - Open field is more sensitive than automated activity monitor in documenting ouabain-induced hyperlocomotion in the development of an animal model for bipolar illness. PG - 455-62 AB - 1. Intracerebroventricular (i.c.v.) administration of ouabain to rats induces motor hyper- and hypoactivity that have been hypothesized to model the mania and depression of bipolar illness, respectively. 2. The extent of ouabain-induced change in activity may vary according to the test environment. 3. To determine the degree of differential response to i.c.v. ouabain in the open field and automated activity monitors, the authors examined a large number of animals (n=40) in both environments. 4. I.c.v. ouabain produced a four-fold increase in open field activity versus i.c.v. artificial cerebrospinal fluid (aCSF) (mean +/- SD: 258.7 +/- 316.61 vs. 84.8 +/- 86.16 squares traversed) (t = 2.648, P = 0.011), but did not alter horizontal activity in automated activity monitors (8193.5 +/- 4902.52 vs. 7088.47 +/- 3046.85 beam interruptions) (t = 0.847, P = 0.4). This increase in activity persisted for at least one week (161.0 +/- 186.35 for i.c.v. ouabain vs. 46.1 +/- 47.46 for i.c.v. aCSF, P = 0.065). 5. Open field is superior to automated activity monitors in capturing ouabain-induced hyperlocomotion response. FAU - Decker, S AU - Decker S AD - Department of Psychiatry and Behavioral Sciences, University of Louisville School of Medicine, Kentucky 40292, USA. FAU - Grider, G AU - Grider G FAU - Cobb, M AU - Cobb M FAU - Li, X P AU - Li XP FAU - Huff, M O AU - Huff MO FAU - El-Mallakh, R S AU - El-Mallakh RS FAU - Levy, R S AU - Levy RS LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Prog Neuropsychopharmacol Biol Psychiatry JT - Progress in neuro-psychopharmacology & biological psychiatry JID - 8211617 RN - 0 (Enzyme Inhibitors) RN - 5ACL011P69 (Ouabain) SB - IM MH - Animals MH - Bipolar Disorder/*physiopathology MH - Disease Models, Animal MH - Enzyme Inhibitors/administration & dosage/*pharmacology MH - Exploratory Behavior/*drug effects MH - Male MH - Movement Disorders MH - Ouabain/administration & dosage/*pharmacology MH - Rats MH - Rats, Sprague-Dawley EDAT- 2000/06/03 09:00 MHDA- 2000/09/30 11:01 CRDT- 2000/06/03 09:00 PHST- 2000/06/03 09:00 [pubmed] PHST- 2000/09/30 11:01 [medline] PHST- 2000/06/03 09:00 [entrez] AID - S0278584699001116 [pii] AID - 10.1016/s0278-5846(99)00111-6 [doi] PST - ppublish SO - Prog Neuropsychopharmacol Biol Psychiatry. 2000 Apr;24(3):455-62. doi: 10.1016/s0278-5846(99)00111-6.