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Hepatoprotective effect of propagermanium on Corynebacterium parvum and lipopolysaccharide-induced liver injury in mice.

Abstract：

:Propagermanium is an organic germanium compound with immunopotentiating activity. We examined the hepatoprotective effect of propagermanium and its mechanism in an experimental animal model of acute liver injury induced with Corynebacterium parvum (C. parvum) and lipopolysaccharide (LPS) injection. Oral pretreatment with propagermanium decreased alanine aminotransferase (ALT) and aspartate aminotransferase (AST) activity in a dose-dependent manner. Significant attenuation of ALT and AST activity was obtained at a dose of 3 mg/kg. Administration of propagermanium also inhibited the infiltration of mononuclear cells into the liver of mice induced by C. parvum/LPS. Immunohistochemical examination revealed infiltration of the liver by CD4-, CD8-, CD11b- and Gr-1-positive cells. Propagermanium prevented CD4- and CD11b-positive cells from infiltrating the liver. In this animal model, blood cytokine levels increased rapidly after LPS injection, causing severe hepatitis. Notably, tumour necrosis factor-alpha (TNF-alpha) and interferon-gamma (IFN-gamma) are important mediators of the progress of liver injury. We demonstrated that propagermanium reduced IFN-gamma production by 53% at a dose of 3 mg/kg and also significantly inhibited the production of interleukin-12 (IL-12). These results indicate that propagermanium inhibits cell infiltration in the liver and cytokine production, and improves massive liver injury in C. parvum/LPS mice.

journal_name

Scand J Immunol

journal_title

Scandinavian journal of immunology

authors

Yokochi S,Ishiwata Y,Hashimoto H,Ninomiya F,Suzuki T

doi

10.1046/j.1365-3083.1998.00356.x

subject

Has Abstract

pub_date

1998-08-01 00:00:00

pages

183-91

issue

2

eissn

0300-9475

issn

1365-3083

journal_volume

48

pub_type

杂志文章

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