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[Pulmonary disorders in indium-processing workers].

Hiroko Nogami1, Terufumi Shimoda, Shunsuke Shoji

  • 1Department of Respiratory Medicine, National Hospital Organization, Fukuoka National Hospital.

Nihon Kokyuki Gakkai Zasshi = the Journal of the Japanese Respiratory Society
|February 12, 2008
PubMed
Summary
This summary is machine-generated.

Inhaled indium compounds may cause lung damage, including emphysema and elevated KL-6 levels, in workers. Higher serum indium concentrations correlate with longer exposure and increased risk of pulmonary disorders.

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Area of Science:

  • Occupational Medicine
  • Toxicology
  • Pulmonary Medicine

Context:

  • Increased production of indium-tin oxide for liquid-crystal panels has raised concerns about worker exposure.
  • Medical surveillance is crucial for individuals working in indium processing plants.

Purpose:

  • To investigate the pulmonary health effects of occupational exposure to indium compounds.
  • To assess the correlation between serum indium levels and pulmonary biomarkers.

Summary:

  • Forty male workers in an indium plant underwent medical evaluations, including high-resolution CT (HRCT), pulmonary function tests, and biomarker analysis (KL-6, SP-D, serum indium).
  • Emphysematous changes were observed in four smokers, and one non-smoker had lung cancer. Elevated serum KL-6 levels were found in 22.5% of subjects.
  • Workers with higher serum indium concentrations (>3 ng/ml) exhibited longer exposure durations and elevated KL-6 and SP-D levels, with serum indium positively correlating with KL-6.

Impact:

  • Findings suggest inhaled indium compounds can lead to pulmonary disorders, highlighting the need for workplace safety measures.
  • This study underscores the importance of monitoring serum indium levels as a potential indicator of lung damage risk.