Description
Protopanaxatriol is a triterpene sapogenin originally found in species of Panax (ginseng) that exhibits antihypertensive, neuromodulatory, and antioxidative activities. Protopanaxatriol prevents breakdown of vitamin D3 and inhibits GABA-A and GABA-C receptors as well as slow-activating delayed rectifier K+ channels. Protopanaxatriol also stimulates production of eNOS and NO, increasing vascular relaxation and decreasing blood pressure. In animal models of isoproterenol-induced myocardial injury, protopanaxatriol decreases levels of maldionaldehyde and increases activity of superoxide dismutase and glutathione peroxidase.
References
Deb S, Chin MY, Adomat H, et al. Ginsenoside-mediated blockade of 1α,25-dihydroxyvitamin D3 inactivation in human liver and intestine in vitro. J Steroid Biochem Mol Biol. 2014 May;141:94-103. PMID: 24486455.
Lee BH, Hwang SH, Choi SH, et al. Inhibitory Effects of Ginsenoside Metabolites, Compound K and Protopanaxatriol, on GABAC Receptor-Mediated Ion Currents. Korean J Physiol Pharmacol. 2013 Apr;17(2):127-32. PMID: 23626474.
Hong SY, Kim JY, Ahn HY, et al. Panax ginseng extract rich in ginsenoside protopanaxatriol attenuates blood pressure elevation in spontaneously hypertensive rats by affecting the Akt-dependent phosphorylation of endothelial nitric oxide synthase. J Agric Food Chem. 2012 Mar 28;60(12):3086-91. PMID: 22380784.
Lee BH, Choi SH, Shin TJ, et al. Effects of Ginsenoside Metabolites on GABAA Receptor-Mediated Ion Currents. J Ginseng Res. 2012 Jan;36(1):55-60. PMID: 23717104
Han B, Meng Q, Li Q, et al. Effect of 20(S)-protopanaxatriol and its epimeric derivatives on myocardial injury induced by isoproterenol. Arzneimittelforschung. 2011;61(3):148-52. PMID: 21528638.
