Roman chamomile inhalation combined with clomipramine treatment improves treatment-resistant depression-like behavior in mice

Biomedicine & Pharmacotherapy = Biomédecine & Pharmacothérapie
Narumi Hashikawa-HobaraNaoya Hashikawa

Abstract

It is well known that chamomile is one of the oldest known medicinal herbs and has been used to treat various disorders, but it is mainly German chamomile. The effects of Roman chamomile on depression still unclear. In this study, we used chronically stressed mice to investigate whether inhalation of Roman chamomile essential oil affects depression-like behavior. We previously reported that restraint and water immersion stress produce depression-like behavior and a blunted response to the tricyclic antidepressant clomipramine. Each mouse was exposed to restraint and water immersion stress for 15 days, and resistance to the effect of clomipramine was induced in a behavioral despair paradigm. In the present study, we found that cotreatment with clomipramine and inhalation of Roman chamomile attenuated depression-like behavior in a forced swim test. Next, we examined the hippocampal mRNA levels of two cytokines, tumor necrosis factor (TNF) alpha and interleukin-6 (IL-6); a neurotrophic factor, brain derived-neurotrophic factor (BDNF); and nerve growth factor (NGF). TNF alpha, IL-6 and BDNF mRNA levels did not change in the hippocampus of stressed mice. However, the NGF mRNA level was significantly decreased, and this decrease was ...Continue Reading

Citations

Mar 28, 2021·Scientific Reports·Narumi Hashikawa-HobaraNaoya Hashikawa
May 1, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Yoshinori MasuoKazuo Koike

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