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BCG inoculation and corticosteroid sensitivity.

T Tanaka1, M Shigeta, M Usui

  • 1Department of Ophthalmology, Tokyo Medical College Hospital, Tokyo, Japan. takaoeye@tkh.att.ne.jp

Ocular Immunology and Inflammation
|January 30, 2002
PubMed
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Bacille de Calmette-Guérin (BCG) inoculation affected corticosteroid sensitivity in Lewis rats, but not WKAH rats. This suggests BCG may alter steroid sensitivity depending on the rat strain.

Area of Science:

  • Immunology
  • Pharmacology

Background:

  • Bacille de Calmette-Guérin (BCG) is a widely used vaccine.
  • Corticosteroids are potent anti-inflammatory drugs.
  • Understanding drug sensitivity is crucial for effective treatment.

Purpose of the Study:

  • To investigate the relationship between BCG inoculation and corticosteroid sensitivity.
  • To determine if BCG affects the immune response to corticosteroids.

Main Methods:

  • Lewis and WKAH rats were inoculated with BCG weekly.
  • Spleen cells were cultured with PHA and betamethasone.
  • Interleukin-2 (IL-2) gene expression was measured using real-time PCR.

Main Results:

  • BCG inoculation sensitized Lewis rats to PPD stimulation.

Related Experiment Videos

  • In Lewis rats, BCG increased IL-2 expression, which was suppressed by betamethasone.
  • WKAH rats showed no significant changes in IL-2 expression or betamethasone response after BCG inoculation.

    • Conclusions:

    • BCG inoculation can alter corticosteroid sensitivity in a strain-dependent manner.
    • The findings suggest a complex interaction between BCG and the immune system's response to steroids.