3,4,5-Trimethoxycinnamic acid is a phenylpropanoid isolated from the roots of Polygala tenuifolia WILLD, with anti-stress effect, prolonging the sleeping time in animals [1] [2]. 3,4,5-Trimethoxycinnamic acid increases expression of GAD65 and γ-subunit of GABAA receptor, but shows no effect on the amounts of α-, β-subunits [2].
In Vivo, 3,4,5-Trimethoxycinnamic acid (25-100 mg/kg, i.p.) exhibits sedative effect, and prolongs the sleeping time in rats[1]. 3,4,5-Trimethoxycinnamic acid (10 mg/kg, p.o.) significantly decreases locomotor activity in mice[2].
In Vitro, 3,4,5-Trimethoxycinnamic acid (10 μg/ml) increases expression of GAD65 and γ-subunit of GABAA receptor, but shows no effect on the amounts of α-, β-subunits[2].
References:
[1]. Kawashima K, et al. Anti-stress effects of 3,4,5-trimethoxycinnamic acid, an active constituent of roots of Polygala tenuifolia (Onji). Biol Pharm Bull. 2004 Aug;27(8):1317-9.
[2]. Lee CI, et al. 3,4,5-Trimethoxycinnamic acid (TMCA), one of the constituents of Polygalae Radix enhances pentobarbital-induced sleeping behaviors via GABAAergic systems in mice. Arch Pharm Res. 2013 Oct;36(10):1244-51.
In Vivo, 3,4,5-Trimethoxycinnamic acid (25-100 mg/kg, i.p.) exhibits sedative effect, and prolongs the sleeping time in rats[1]. 3,4,5-Trimethoxycinnamic acid (10 mg/kg, p.o.) significantly decreases locomotor activity in mice[2].
In Vitro, 3,4,5-Trimethoxycinnamic acid (10 μg/ml) increases expression of GAD65 and γ-subunit of GABAA receptor, but shows no effect on the amounts of α-, β-subunits[2].
References:
[1]. Kawashima K, et al. Anti-stress effects of 3,4,5-trimethoxycinnamic acid, an active constituent of roots of Polygala tenuifolia (Onji). Biol Pharm Bull. 2004 Aug;27(8):1317-9.
[2]. Lee CI, et al. 3,4,5-Trimethoxycinnamic acid (TMCA), one of the constituents of Polygalae Radix enhances pentobarbital-induced sleeping behaviors via GABAAergic systems in mice. Arch Pharm Res. 2013 Oct;36(10):1244-51.