Expression of decorin, transforming growth factor-beta1, tissue inhibitor metalloproteinase 1 and 2, and type IV collagenases in chronic hepatitis

J. Dudás, I. Kovalszky, M. Gallai, J. O. Nagy, Z. Schaff, T. Knittel, M. Mehde, K. Neubauer, F. Szalay, G. Ramadori

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

Decorin is a small extracellular matrix proteoglycan. It binds and modulates transforming growth factor (TGF)-beta1 action, the major stimulator of fibrogenesis. Its role in the pathogenesis of human liver cirrhosis is unknown. Therefore, we studied the relationship of the 2 proteins in normal human liver and in 43 chronic hepatitis and liver cirrhosis specimens. To understand the mechanism that maintains matrix deposition in stage IV hepatitis, we studied expression of tissue inhibitor of metalloproteinase (TIMP)-1 and TIMP-2, as well as the activities of type IV collagenases. Gene expression was analyzed on messenger RNA and protein level by morphologic and biochemical approaches. Decorin proved to be an early marker of fibrogenesis, and its deposition increased parallel to that of TGF-beta1 and to inflammatory activity. Liver fibrosis progressed despite high temporospatial expression of decorin with TGF-beta1. Neither decorin nor TGF-beta1 protein deposition increased further in cirrhosis with low inflammatory activity; suggesting that impaired extracellular matrix catabolism rather than active production plays a role in this stage. This possibility was supported by high message levels of metalloproteinase inhibitors, no 72-kd collagenase activities, and low 92-kd collagenase activities.

Original languageEnglish
Pages (from-to)725-735
Number of pages11
JournalAmerican Journal of Clinical Pathology
Volume115
Issue number5
DOIs
Publication statusPublished - 2001

Fingerprint

Decorin
Transforming Growth Factor beta1
Tissue Inhibitor of Metalloproteinase-2
Tissue Inhibitor of Metalloproteinase-1
Collagenases
Chronic Hepatitis
Liver Cirrhosis
Extracellular Matrix
Proteins
Metalloproteases
Proteoglycans
Hepatitis
Fibrosis
Gene Expression
Messenger RNA
Liver

Keywords

  • Collagenases
  • Decorin
  • Liver cirrhosis
  • TGF-beta1
  • TIMP
  • Tissue inhibitor of metalloproteinase
  • Transforming growth factor-beta1

ASJC Scopus subject areas

  • Pathology and Forensic Medicine

Cite this

Expression of decorin, transforming growth factor-beta1, tissue inhibitor metalloproteinase 1 and 2, and type IV collagenases in chronic hepatitis. / Dudás, J.; Kovalszky, I.; Gallai, M.; Nagy, J. O.; Schaff, Z.; Knittel, T.; Mehde, M.; Neubauer, K.; Szalay, F.; Ramadori, G.

In: American Journal of Clinical Pathology, Vol. 115, No. 5, 2001, p. 725-735.

Research output: Contribution to journalArticle

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AU - Schaff, Z.

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