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Related Experiment Videos

Caffeic acid attenuates the decrease in cortical BDNF mRNA expression induced by exposure to forced swimming stress

Hiroshi Takeda1, Minoru Tsuji, Tomoko Yamada

  • 1Department of Pharmacology, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan. ht0417@tokyo-med.ac.jp

European Journal of Pharmacology
|February 25, 2006
PubMed
Summary
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Caffeic acid, a compound found in plants, shows antidepressant-like effects by preventing stress-induced decreases in brain-derived neurotrophic factor (BDNF) mRNA in mice.

Area of Science:

  • Neuroscience
  • Pharmacology
  • Molecular Biology

Background:

  • Depression is a complex disorder linked to neurotrophic factor dysfunction.
  • Brain-derived neurotrophic factor (BDNF) and its receptor TrkB are implicated in depression pathophysiology.
  • Previous research indicated caffeic acid possesses antidepressant-like properties in animal models.

Purpose of the Study:

  • To investigate the effect of caffeic acid on BDNF and TrkB mRNA expression in mice under stress.
  • To determine if caffeic acid modulates stress-induced changes in neurotrophic factor gene expression.

Main Methods:

  • Mice were subjected to the forced swimming test, a model for depression.
  • Caffeic acid (4 mg/kg, i.p.) was administered.
  • BDNF and TrkB mRNA levels were quantified in brain regions (frontal cortex, amygdala) using RT-PCR.

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Main Results:

  • Caffeic acid reduced immobility time in the forced swimming test, confirming antidepressant-like effects.
  • Stressful conditions (forced swimming) significantly decreased BDNF mRNA in the frontal cortex and TrkB mRNA in the amygdala.
  • Caffeic acid administration attenuated the stress-induced reduction in frontal cortex BDNF mRNA.
  • Caffeic acid did not alter BDNF or TrkB mRNA levels in naive mice.

Conclusions:

  • Caffeic acid exhibits antidepressant-like effects, potentially mediated by its action on BDNF.
  • Caffeic acid can prevent the down-regulation of BDNF transcription caused by acute stress.
  • These findings suggest a therapeutic role for caffeic acid in stress-related mood disorders.