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2013 ; 16
(6
): 518-28
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Resolution of liver fibrosis by isoquinoline alkaloid berberine in
CCl?-intoxicated mice is mediated by suppression of oxidative stress and
upregulation of MMP-2 expression
#MMPMID23734997
Domitrovi? R
; Jakovac H
; Marchesi VV
; Bla?ekovi? B
J Med Food
2013[Jun]; 16
(6
): 518-28
PMID23734997
show ga
Liver fibrosis is the result of chronic liver injury, and it represents a
widespread medical problem. The aim of this study is to investigate the
antifibrotic activity of isoquinoline alkaloid berberine in carbon tetrachloride
(CCl?)-induced damage in mice. Hepatic fibrosis was induced by intraperitoneal
(i.p.) administration of CCl? (2?mL/kg, 20% v/v in olive oil) twice a week for 8
weeks. Berberine at the doses of 3 and 9?mg/kg and silymarin at the dose of
50?mg/kg were given i.p. once daily for the next 2 weeks. CCl? intoxication
increased the levels of serum transaminases and induced oxidative stress in the
liver. Hepatic fibrosis was evidenced by a massive deposition of collagen, which
coincided with increased expression of tumor necrosis factor (TNF)-? and
transforming growth factor (TGF)-?1 and the activation of hepatic stellate cells.
The high-dose berberine (9?mg/kg) ameliorated oxidative stress, decreased TNF-?
and TGF-?1 expression, increased the levels of matrix metalloproteinase (MMP)-2,
and stimulated the elimination of fibrous deposits. Berberine at the dose of
9?mg/kg exhibited stronger therapeutic activity against hepatic fibrosis than
silymarin at the dose of 50?mg/kg. In vitro analyses show an important scavenging
activity of berberine against oxygen and nitrogen reactive species. The results
of this study suggest that berberine could ameliorate liver fibrosis through the
suppression of hepatic oxidative stress and fibrogenic potential, concomitantly
stimulating the degradation of collagen deposits by MMP-2.