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Cytokine content in pleural effusion. Comparison between tuberculous and carcinomatous pleurisy

K Shimokata1, H Saka, T Murate

  • 1First Department of Medicine, Nagoya University School of Medicine, Japan.

Chest
|May 1, 1991
PubMed

Insights

Tuberculous pleurisy fluid shows elevated levels of interleukin-2 (IL-2), interferon-gamma (IFN-gamma), and adenosine deaminase (ADA). These markers suggest active T lymphocyte involvement in local cellular immunity against tuberculosis.

Area of Science:

  • Immunology
  • Infectious Diseases
  • Pulmonology

Background:

  • Tuberculous pleurisy serves as a model for studying local cellular immunity.
  • Pleural effusions in tuberculous pleurisy are expected to contain various cytokines due to immune cell accumulation.

Purpose of the Study:

  • To investigate the levels of interleukin-1 (IL-1), interleukin-2 (IL-2), and interferon-gamma (IFN-gamma) in tuberculous pleural fluid.
  • To compare these cytokine levels and adenosine deaminase (ADA) levels with those found in malignant pleural effusions.

Main Methods:

  • Analysis of pleural fluid from 20 patients with tuberculous pleurisy and 20 with malignant pleurisy.
  • Measurement of IL-1, IL-2, IFN-gamma, and ADA levels in both groups.

Main Results:

  • Tuberculous pleural fluid exhibited significantly higher levels of IL-2, IFN-gamma, and ADA compared to malignant pleural fluid.
  • IL-1 levels were also higher in tuberculous effusions, though the difference was less pronounced.
  • Elevated levels of IL-2, IFN-gamma, and ADA were dominant markers distinguishing tuberculous from malignant pleurisy.

Conclusions:

  • Activated T lymphocytes in tuberculous pleural fluid contribute to lymphokine production at the site of infection.
  • These lymphokines play a crucial role in mediating local cellular immunity against tuberculosis.
  • Elevated ADA levels can serve as a valuable indicator for diagnosing tuberculous pleurisy.

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