PMID- 16497295 OWN - NLM STAT- MEDLINE DCOM- 20060607 LR - 20121115 IS - 0014-2999 (Print) IS - 0014-2999 (Linking) VI - 534 IP - 1-3 DP - 2006 Mar 18 TI - Caffeic acid attenuates the decrease in cortical BDNF mRNA expression induced by exposure to forced swimming stress in mice. PG - 115-21 AB - We previously reported that caffeic acid produces antidepressive-like effects in the forced swimming test in mice, an animal model of depression. Increased evidence suggests that brain-derived neurotrophic factor (BDNF), a member of the neurotrophin family that has high affinity for the tyrosine kinase receptor B (TrkB), plays an important role in the pathophysiology and treatment of depression. The present study examined whether caffeic acid affects the expression levels of BDNF and TrkB mRNA in brain regions of mice subjected to a forced swimming test. Caffeic acid (4 mg/kg, i.p.) reduced the duration of immobility of mice in the forced swimming test. The levels of BDNF mRNA in the frontal cortex as well as TrkB mRNA in the amygdala were significantly decreased after the forced swimming test, and the former reduction was significantly inhibited by caffeic acid (4 mg/kg, i.p.). Caffeic acid (4 mg/kg, i.p.) did not modify the levels of BDNF and TrkB mRNA in brain regions of naive mice. These results suggest that caffeic acid can attenuate the down-regulation of BDNF transcription that results from stressful conditions. FAU - Takeda, Hiroshi AU - Takeda H AD - Department of Pharmacology, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan. ht0417@tokyo-med.ac.jp FAU - Tsuji, Minoru AU - Tsuji M FAU - Yamada, Tomoko AU - Yamada T FAU - Masuya, Jiro AU - Masuya J FAU - Matsushita, Kaneaki AU - Matsushita K FAU - Tahara, Masashi AU - Tahara M FAU - Iimori, Makio AU - Iimori M FAU - Matsumiya, Teruhiko AU - Matsumiya T LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060221 PL - Netherlands TA - Eur J Pharmacol JT - European journal of pharmacology JID - 1254354 RN - 0 (Antidepressive Agents) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Caffeic Acids) RN - 0 (RNA, Messenger) RN - U2S3A33KVM (caffeic acid) SB - IM MH - Animals MH - Antidepressive Agents/*pharmacology/therapeutic use MH - Behavior, Animal/drug effects MH - Brain-Derived Neurotrophic Factor/genetics/*metabolism MH - Caffeic Acids/*pharmacology/therapeutic use MH - Cerebral Cortex/*drug effects/metabolism MH - Depression/drug therapy/metabolism MH - Disease Models, Animal MH - Gene Expression Regulation MH - Male MH - Mice MH - Mice, Inbred ICR MH - Models, Animal MH - RNA, Messenger/metabolism MH - Stress, Psychological MH - Swimming MH - Time Factors EDAT- 2006/02/25 09:00 MHDA- 2006/06/08 09:00 CRDT- 2006/02/25 09:00 PHST- 2005/11/09 00:00 [received] PHST- 2005/12/19 00:00 [revised] PHST- 2006/01/18 00:00 [accepted] PHST- 2006/02/25 09:00 [pubmed] PHST- 2006/06/08 09:00 [medline] PHST- 2006/02/25 09:00 [entrez] AID - S0014-2999(06)00038-0 [pii] AID - 10.1016/j.ejphar.2006.01.026 [doi] PST - ppublish SO - Eur J Pharmacol. 2006 Mar 18;534(1-3):115-21. doi: 10.1016/j.ejphar.2006.01.026. Epub 2006 Feb 21.