Formula: see text], a Rare Protopanaxatriol-Type Ginsenoside Fraction from Black Ginseng, Suppresses Inflammatory Gene iNOS via the Iinhibition of p-STAT-1 and NF-[Formula: see text]B

The American Journal of Chinese Medicine
So Yeon JeongJong-Sup Bae

Abstract

Black ginseng (BG), which is ginseng that has been steamed and dried nine times, and its main protopanaxatriol-type ginsenosides Rg4, Rg6, Rh4, and Rg2 have been reported to exhibit various forms of biological activity, including antiseptic, antidiabetic, wound-healing, immune-stimulatory, and anti-oxidant activity. The aim of the this study was to examine the effects of [Formula: see text] (a rare protopanaxatriol-type ginsenoside fraction; Rg2, Rg4, Rg6, Rh1, and Rh4) on heme oxygenase-1 (HO-1) induction and on the expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX-)2 in lipopolysaccharide (LPS)-activated human pulmonary artery endothelial cells (HPAECs). [Formula: see text] was tested to determine its effect on iNOS protein expression and inflammatory markers (interleukin [IL]-1[Formula: see text] and tumor necrosis factor [TNF]-[Formula: see text] in the lung tissue of LPS-treated mice. The results showed that [Formula: see text] induced the expression of HO-1, reduced LPS-activated NF-[Formula: see text]B-luciferase activity, and inhibited iNOS/NO and COX-2/PGE2, which contributed to the inhibition of STAT-1 phosphorylation. In particular, [Formula: see text] induced the translocation of Nrf2 from...Continue Reading

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