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[Superoxide production by neutrophils in patients with recurrent tonsillitis]

Y Yokoyama1, Y Harabuchi, Y Kukuminato

  • 1Department of Otolaryngology, School of Medicine, Sapporo Medical University.

Nihon Jibiinkoka Gakkai Kaiho
|December 1, 1994
PubMed

Insights

Superoxide anion production by polymorphonuclear leukocytes (PMNs) is lower in patients with recurrent tonsillitis, particularly those with high anti-streptolysin-O titers. Streptococcus pyogenes may inhibit this crucial immune response, contributing to recurring infections.

Area of Science:

  • Immunology
  • Microbiology

Context:

  • Recurrent tonsillitis is a common condition often associated with bacterial infections, primarily Streptococcus pyogenes.
  • Polymorphonuclear leukocytes (PMNs) play a critical role in the innate immune response through the production of superoxide anions (O2-).
  • The relationship between PMN superoxide production and the severity or frequency of tonsillitis, particularly in relation to streptococcal titers, requires further elucidation.

Purpose:

  • To investigate the production of superoxide anion by peripheral blood PMNs in patients with recurrent tonsillitis.
  • To determine the correlation between superoxide production, clinical parameters (acute episodes, CRP, WBC count), and serum anti-streptolysin-O (ASO) titers.
  • To examine the in vitro effect of Streptococcus pyogenes on PMN superoxide production.

Summary:

  • Superoxide anion production by PMNs was measured in 57 patients with recurrent tonsillitis.
  • No significant correlation was found with acute tonsillitis episodes, CRP, or WBC count.
  • However, superoxide production was inversely correlated with serum ASO titers and was significantly lower in patients with high ASO titers and in vitro when PMNs were exposed to Streptococcus pyogenes supernatant, suggesting an inhibitory effect.

Impact:

  • Findings suggest that reduced superoxide production by PMNs, potentially due to frequent or persistent streptococcal infections, may contribute to recurrent tonsillitis.
  • This highlights a potential mechanism linking streptococcal load to impaired immune function in recurrent tonsillitis.
  • Further research could explore therapeutic strategies targeting PMN function in managing recurrent tonsillitis.

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