Esculentoside A inhibits tumor necrosis factor, interleukin-1, and interleukin-6 production induced by lipopolysaccharide in mice.

Abstract:

:Esculentoside A, a kind of saponin isolated from the root of the Chinese herb Phytolaca esculenta, is reported to possess potent anti-inflammatory effects in acute and chronic experimental models. In the present study, we investigated the effects of esculentoside A on the production of tumor necrosis factor (TNF), interleukin-1 (IL-1) and interleukin-6 (IL-6) induced by lipopolysaccharide (LPS) in mice. In vitro experiments demonstrated that esculentoside A (0.1-10 mumol/l) significantly reduced the release of TNF from the peritoneal macrophages derived from mice pretreated with thioglycolate. IL-1 and IL-6 secretion was also obviously inhibited in a concentration-dependent manner by esculentoside A from 0.01 to 10 mumol/l. In vivo experiments demonstrated that detectable TNF was observed 0.25 h after injection, was maximal at 0.5 h, and returned to baseline at 4 h. Maximal production of IL-1 and IL-6 were observed to be 1 and 2 h, respectively, after injection of LPS. Pretreatment of mice with 5, 10, or 20 mg/kg esculentoside A once a day for 7 consecutive days dose-dependently decreased the TNF, IL-1 and IL-6 levels in the sera of mice following LPS challenge. TNF, IL-1, and IL-6 are important cytokines involved in the pathogenesis of inflammatory lesions. Inhibition of inflammatory cytokine production may contribute to the anti-inflammatory effects of esculentoside A.

journal_name

Pharmacology

journal_title

Pharmacology

authors

Ju DW,Zheng QY,Cao X,Fang J,Wang HB

doi

10.1159/000028197

subject

Has Abstract

pub_date

1998-04-01 00:00:00

pages

187-95

issue

4

eissn

0031-7012

issn

1423-0313

pii

pha56187

journal_volume

56

pub_type

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