Pathogenesis of hepatic fibrosis in experimental iron overload.

Abstract:

:Significant increases in prolyl hydroxylase activity, a key enzyme in the collagen biosynthetic pathway, were noted in the hepatic homogenates of iron-loaded animals as compared to controls. The increase in prolyl hydroxylase activity was seen without any light microscopic histologic evidence of cell necrosis or accumulation of collagen in the livers from the iron-loaded animals. However, utilizing electron microscopy, collagen fibrils were demonstrated immediately adjacent to the hepatocytes in the iron-loaded animals but not the controls. No fibroblasts or inflammatory cells were noted in this area. There was no evidence of damage to the subcellular organelles of the iron-loaded hepatocytes. The hydroxyproline content of the iron-loaded livers was also shown to be increased. These experimental studies in conjunction with clinical observations described below suggest that in vivo iron overload may have a primary effect on stimulating collagen synthesis by hepatocytes.

journal_name

Br J Haematol

authors

Weintraub LR,Goral A,Grasso J,Franzblau C,Sullivan A,Sullivan S

doi

10.1111/j.1365-2141.1985.tb02997.x

subject

Has Abstract

pub_date

1985-02-01 00:00:00

pages

321-31

issue

2

eissn

0007-1048

issn

1365-2141

journal_volume

59

pub_type

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