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3,4-methylenedioxymethamphetamine ("Ecstasy") stimulates the expression of alpha1(I) procollagen mRNA in hepatic

M Varela-Rey1, C Montiel-Duarte, G Beitia

  • 1Department of Biochemistry, University of Navarra, Pamplona, Spain.

Biochemical and Biophysical Research Communications
|June 12, 1999
PubMed

Insights

3,4-Methylenedioxymethamphetamine (MDMA) increases collagen production in liver cells by depleting glutathione and increasing oxidative stress. This suggests MDMA contributes to liver fibrosis through these mechanisms.

Area of Science:

  • Hepatology
  • Toxicology
  • Cell Biology

Background:

  • 3,4-Methylenedioxymethamphetamine (MDMA) is known to cause liver damage, including cell necrosis and fibrosis.
  • Hepatic stellate cells (HSC) are the primary collagen-producing cells in the liver and play a key role in liver fibrosis.

Purpose of the Study:

  • To investigate the effect of MDMA on type I collagen production in hepatic stellate cells (HSC).
  • To elucidate the underlying mechanisms of MDMA-induced pro-fibrogenic effects on HSC.

Main Methods:

  • HSC cell line treated with MDMA.
  • Measurement of alpha1(I) procollagen mRNA levels.
  • Assessment of glutathione levels and hydrogen peroxide production.
  • Evaluation of lipid peroxidation.
  • Pre-treatment experiments with antioxidants (glutathione monoethyl ester) and iron chelators (deferoxamine).

Main Results:

  • MDMA significantly increased alpha1(I) procollagen mRNA levels in HSC.
  • This increase was associated with glutathione depletion and enhanced hydrogen peroxide production.
  • MDMA-induced collagen mRNA expression was prevented by pre-treatment with glutathione monoethyl ester or deferoxamine.
  • Lipid peroxidation was not detected in MDMA-treated cells.

Conclusions:

  • MDMA stimulates type I collagen production in hepatic stellate cells.
  • Oxidative stress, mediated by glutathione depletion and increased hydrogen peroxide, is a key mechanism in MDMA's pro-fibrogenic action on HSC.
  • Lipid peroxidation does not appear to be involved in MDMA's pro-fibrogenic effects on HSC.

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