PMID- 23151611 OWN - NLM STAT- MEDLINE DCOM- 20131126 LR - 20130422 IS - 1461-7285 (Electronic) IS - 0269-8811 (Linking) VI - 27 IP - 5 DP - 2013 May TI - Antidepressant-like effect of oleanolic acid in mice exposed to the repeated forced swimming test. PG - 459-68 LID - 10.1177/0269881112467090 [doi] AB - The study aimed to explore the antidepressant-like effect of oleanolic acid and its possible mechanism related to the monoaminergic system and neurotrophin in mice exposed to the repeated forced swimming test (FST). Both the duration and the latency of immobility affected by oleanolic acid (10, 20 and 40 mg/kg) were evaluated in the FST repeated at intervals on days 1, 7 and 14, followed by neurochemical and brain-derived neurotrophic factor (BDNF) analyses in the mouse brain regions of frontal cortex and whole hippocampus. A repeated analysis of variance (ANOVA) indicated that over retesting the immobility time increased, whereas latency to immobility tended to decrease. Minute-by-minute analysis showed that immobility time also increased during the 4-min course of the test. In addition, post-hoc Dunnett's test demonstrated that sub-chronic and chronic, but not acute, oleanolic acid treatment reduced the immobility time (sub-chronic: 20 mg/kg, 43.5%; chronic: 10 mg/kg, 19.3%; 20 mg/kg, 31.8%) and increased the latency to immobility (sub-chronic: 10 mg/kg, 60.6%; 20 mg/kg, 80.1%; chronic: 10 mg/kg, 121.8%; 20 mg/kg, 140.8%; 40 mg/kg, 80.0%). Furthermore, chronic administration of oleanolic acid significantly increased serotonin (5-HT) levels (frontal cortex: 44.5%, 41.9%, 27.5% for 10, 20, 40 mg/kg; hippocampus: 57.2%, 80.9% for 10, 20 mg/kg), decreased 5-hydroxyindoleacetic acid (5-HIAA)/5-HT ratio (frontal cortex: 31.6%, 30.1%, 23.5%; hippocampus: 40.6%, 47.7%, 29.2% for 10, 20, 40 mg/kg) and elevated norepinephrine (NE) levels (hippocampus: 20 mg/kg, 45.4%) but did not alter dopamine (DA) levels. Moreover, BDNF levels in the two brain regions were also elevated by chronic oleanolic acid treatment (frontal cortex: 20 mg/kg, 67.2%; hippocampus: 10 mg/kg, 36.4%; 20 mg/kg, 55.1%). Taken together, these findings imply that functions of 5-HT, NE and BDNF may be involved in the antidepressant-like effect of oleanolic acid. FAU - Yi, Li-Tao AU - Yi LT AD - Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, PR China. litao.yi@yahoo.com FAU - Li, Jing AU - Li J FAU - Liu, Qing AU - Liu Q FAU - Geng, Di AU - Geng D FAU - Zhou, Ya-Fei AU - Zhou YF FAU - Ke, Xiao-Qing AU - Ke XQ FAU - Chen, Huan AU - Chen H FAU - Weng, Lian-Jin AU - Weng LJ LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20121113 PL - United States TA - J Psychopharmacol JT - Journal of psychopharmacology (Oxford, England) JID - 8907828 RN - 0 (Antidepressive Agents) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 333DO1RDJY (Serotonin) RN - 54-16-0 (Hydroxyindoleacetic Acid) RN - 6SMK8R7TGJ (Oleanolic Acid) RN - VTD58H1Z2X (Dopamine) RN - X4W3ENH1CV (Norepinephrine) SB - IM MH - Analysis of Variance MH - Animals MH - Antidepressive Agents/*pharmacology MH - Brain-Derived Neurotrophic Factor/metabolism MH - Dopamine/metabolism MH - Frontal Lobe/drug effects/metabolism MH - Hippocampus/drug effects/metabolism MH - Hydroxyindoleacetic Acid/metabolism MH - Male MH - Mice MH - Mice, Inbred ICR MH - Motor Activity/*drug effects MH - Norepinephrine/metabolism MH - Oleanolic Acid/*pharmacology MH - Serotonin/metabolism MH - Stress, Physiological/*drug effects MH - *Swimming EDAT- 2012/11/16 06:00 MHDA- 2013/12/16 06:00 CRDT- 2012/11/16 06:00 PHST- 2012/11/16 06:00 [entrez] PHST- 2012/11/16 06:00 [pubmed] PHST- 2013/12/16 06:00 [medline] AID - 0269881112467090 [pii] AID - 10.1177/0269881112467090 [doi] PST - ppublish SO - J Psychopharmacol. 2013 May;27(5):459-68. doi: 10.1177/0269881112467090. Epub 2012 Nov 13.