TGF-β isoforms in alcoholic liver disease

Rui M. Santos, Pamela Norton, Silvia Degli Esposti, Mark A Zern

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

The increased deposition of extracellular matrix proteins in the liver is a key factor in the morbidity and mortality of alcoholic liver disease (ALD). This increased fibrosis may be due to a superabundance of profibrogenic factors such as transforming growth factor-β (TGF-β). The original peptide is now called TGF-β1, and two other isoforms have been recognized in humans (TGF-β2 and TGF-β3). It was the aim of the present study to determine the expression of the TGF-β isoforms in different stages of ALD. Thirty patients with ALD had percutaneous liver biopsies performed for diagnostic purposes. They were grouped by clinical findings and by liver histology into four groups: I, steatosis; II, fibrosis; III, hepatitis; and IV, cirrhosis. An unused portion of each biopsy sample was used to evaluate the gene expression of TGF-β1, TGF-β2, and TGF-β3 by reverse transcription polymerase chain reaction (RT-PCR). The expression of all isoforms from patients was significantly greater than their expression in controls. No significant correlation was determined between TGF-β isoform expression and liver function test results. When the different isoforms were grouped by histology, increased expression with more severe disease was found; however, differences existed among the isoforms. In ALD, all TGF-β isoforms were increased and their expression was significantly greater in patients with more active and advanced disease. RT-PCR is an effective method for evaluating gene expression in clinical samples which often provide a limited amount of tissue.

Original languageEnglish (US)
Pages (from-to)383-389
Number of pages7
JournalJournal of Gastroenterology
Volume33
Issue number3
DOIs
StatePublished - Jun 1998
Externally publishedYes

Keywords

  • Alcoholic liver disease
  • Gene expression
  • Liver fibrosis
  • Transforming growth factor-β

ASJC Scopus subject areas

  • Gastroenterology

Fingerprint Dive into the research topics of 'TGF-β isoforms in alcoholic liver disease'. Together they form a unique fingerprint.

  • Cite this

    Santos, R. M., Norton, P., Degli Esposti, S., & Zern, M. A. (1998). TGF-β isoforms in alcoholic liver disease. Journal of Gastroenterology, 33(3), 383-389. https://doi.org/10.1007/s005350050100