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Related Experiment Videos

Is occupational organic solvent exposure a risk factor for scleroderma?

P J Nietert1, S E Sutherland, R M Silver

  • 1Medical University of South Carolina, Charleston 29425-8060, USA.

Arthritis and Rheumatism
|June 17, 1998
PubMed
Summary

Occupational exposure to organic solvents may increase the risk of systemic sclerosis (SSc), particularly in men and those with specific autoantibodies. Further research is needed to confirm this association.

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Area of Science:

  • Environmental health
  • Rheumatology
  • Occupational medicine

Background:

  • Systemic sclerosis (SSc), or scleroderma, is a chronic autoimmune disease characterized by hardening of the skin and connective tissues.
  • The etiology of SSc is complex, involving genetic and environmental factors.
  • Occupational exposures, particularly to organic solvents, have been investigated as potential environmental triggers.

Purpose of the Study:

  • To investigate the association between occupational exposure to organic solvents and the risk of developing systemic sclerosis (SSc).

Main Methods:

  • A case-control study involving 178 SSc patients and 200 controls.
  • Occupational histories were collected for all participants.
  • Job exposure matrices were used to compute cumulative and maximum intensity scores for solvent exposure, validated by an industrial expert.

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Main Results:

  • Men with SSc showed higher cumulative and maximum intensity scores for solvent exposure compared to controls (ORs 2.9).
  • A higher maximum intensity score for trichloroethylene exposure was also associated with SSc in men (OR 3.3).
  • Significant associations were observed in SSc patients positive for anti-Scl-70 autoantibodies, but not in those negative for this marker.

Conclusions:

  • Occupational exposure to organic solvents appears to be associated with an increased risk of systemic sclerosis.
  • The findings suggest a potential role for specific solvent exposures in SSc pathogenesis, particularly in anti-Scl-70 positive individuals.