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Abstract Title:

Luteolin mediates the antidepressant-like effects of Cirsium japonicum in mice, possibly through modulation of the GABAA receptor.

Abstract Source:

Arch Pharm Res. 2014 Feb ;37(2):263-9. Epub 2013 Aug 8. PMID: 23925560

Abstract Author(s):

June Bryan I de la Peña, Chong Ah Kim, Hye Lim Lee, Seo Young Yoon, Hee Jin Kim, Eun Young Hong, Gun Hee Kim, Jong Hoon Ryu, Yong Soo Lee, Kyeong Man Kim, Jae Hoon Cheong

Article Affiliation:

June Bryan I de la Peña

Abstract:

Cirsium japonicum (CJ) has been shown to possess antidepressant-like properties. In the present study, we sought to identify which constituent of CJ might be responsible for its antidepressant effects and determine probable mechanism of action. The ethanol extract of CJ was administered to mice then behavioral changes were evaluated in the forced-swimming test (FST) and open-field test (OFT). In addition, its effects on norepinephrine (NE) reuptake and intracellular chloride (Cl(-)) flux were determined, in vitro. The effects of CJ's major constituents (linarin, pectolinarin, chlorogenic acid, luteolin) were also evaluated. CJ showed antidepressant-like effect by significantly reducing immobile behavior of mice in the FST, without increasing locomotor activity in the OFT. CJ had no effect on monoamine (NE) uptake, but it significantly promoted Cl(-) ion influx in human neuroblastoma cells. This CJ-induced Cl(-) influx was significantly blocked by co-administration of the competitive GABAA receptor antagonist, bicuculline. Among the major constituents of the CJ extract, only luteolin produced similar antidepressant-like effect, in vivo, and Cl(-) ion influx, in vitro. Altogether, the present results suggest that the antidepressant-like effect of CJ was most probably induced by its constituent luteolin, mediated through potentiation of the GABAA receptor-Cl(-) ion channel complex.

Study Type : Animal Study

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