Effects of urotensin-II on cytokines in early acute liver failure in mice.

Abstract:

AIM:To investigate urotensin-II (UII) and its effects on tumor necrosis factor (TNF)-α and interleukin (IL)-1β in early acute liver failure (ALF). METHODS:We investigated the time-dependent alteration in UII levels and its effects on TNF-α and IL-1β in liver and blood in the early stage of lipopolysaccharide/D-galactosamine-induced ALF. RESULTS:After lipopolysaccharide/D-galactosamine challenge, UII rose very rapidly and reached a maximal level 0.5 h, and the level remained significantly elevated after 2 h (P < 0.05). Six hours after challenge, UII began to degrade, but remained higher than at 0 h (P < 0.05). Pretreatment with urantide, an inhibitor of the UII receptor, suppressed the degree of UII increase in liver and blood at 6 h after challenge (P < 0.05 vs paired controls). In addition, liver and blood TNF-α increased from 1 to 6 h, and reached a peak at 1 and 2 h, respectively; however, IL-1β did not rise until 6 h after challenge. Urantide pretreatment inhibited the degree of TNF-α and IL-1β increase following downregulation of UII post-challenge (all P < 0.05). CONCLUSION:UII plays a role in the pathogenesis and priming of ALF by triggering an inflammatory cascade and driving the early release of cytokines in mice.

journal_name

World J Gastroenterol

authors

Liu LM,Zhao L,Liang DY,Yu FP,Ye CG,Tu WJ,Zhu T

doi

10.3748/wjg.v21.i11.3239

subject

Has Abstract

pub_date

2015-03-21 00:00:00

pages

3239-44

issue

11

eissn

1007-9327

issn

2219-2840

journal_volume

21

pub_type

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