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Abstract Title:

Suppressive Effects of Ginsenoside Rh1 on HMGB1-Mediated Septic Responses.

Abstract Source:

Am J Chin Med. 2019 Jan 10:1-15. Epub 2019 Jan 10. PMID: 30630344

Abstract Author(s):

Wonhwa Lee, Soo-Hyun Cho, Ji-Eun Kim, Changhun Lee, Jee-Hyun Lee, Moon-Chang Baek, Gyu-Yong Song, Jong-Sup Bae

Article Affiliation:

Wonhwa Lee

Abstract:

High mobility group box 1 (HMGB1) is considered as a late mediator of sepsis and the inhibition of HMGB1-mediated severe inflammatory responses, and restoration of endothelial integrity have emerged as attractive therapeutic strategies for the management of sepsis. Ginsenoside Rh1, a protopanaxatriol type ginsenoside, is one of the major bioactive components of Korean red ginseng, which has been increasingly used for enhancing cognition and physical health worldwide. Ginsenoside Rh1 exhibits potent biological activities such as antistress, anti-oxidant, anti-inflammatory and immunomodulatory effects. We examined the effects of ginsenoside Rh1 on HMGB1-mediated septic responses and survival rate in a mouse model of sepsis. Ginsenoside-Rh1 was administered after the HMGB1 challenge. The antiseptic activity of ginsenoside Rh1 was determined by measuring the permeability, leukocyte adhesion and migration, activation of pro-inflammatory proteins in HMGB1-activated human umbilical vein endothelial cells (HUVECs) and mice, and the survival rate in a sepsis mouse model. Ginsenoside Rh1 significantly reduced HMGB1 release in lipopolysaccharide (LPS)-activated HUVECs. Furthermore, ginsenoside Rh1 suppressed the production of tumor necrosis factor (TNF)-, interleukin (IL)-6, activation of nuclear factor (NF)-B and extracellular signal-regulated kinase (ERK) 1/2 by HMGB1. Ginsenoside Rh1 also inhibited HMGB1-mediated hyperpermeability and leukocyte migration in mice. In addition, treatment with ginsenoside Rh1 reduced the cecal ligation and puncture (CLP)-induced release of HMGB1, sepsis-related mortality and tissue injury in vivo. Our results indicated that ginsenoside Rh1 might be useful in the treatment of sepsis by targeting HMGB1.

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