Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0040425 (tonsillitis)
 1,594 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Superoxide anion (O2-) production by peripheral blood polymorphonuclear leukocytes (PMNs) stimulated with phorbol myristate acetate (PMA) was measured by the cytochrome C method in 57 patients with recurrent tonsillitis. There was no significant correlation between superoxide production and episodes of acute tonsillitis, serum C-reactive protein levels, or peripheral white blood cell count. However, the superoxide production by PMNs was inversely correlated with serum anti-streptolysin-O titers (r = -.38, p = .008). Furthermore, the mean +/- SD superoxide levels produced by PMNs from patients with high serum ASO titers (> 71 U/ml), 69.58 +/- 30.56 nM/10(6) cells, was significantly lower than that of patients with low serum ASO titers (< 71 U/ml), 89.83 +/- 38.90 nM/10(6) cells (p = 0.037), and that of healthy adult controls, 102.27 +/- 44.67 nM/10(6) cells (p = 0.012). In addition, the effect of Streptococcus pyogenes on superoxide production by PMNs was studied in vitro. Superoxide production by PMNs preincubated with 600 micrograms/ml culture supernatant of Streptococcus pyogenes T4 (not detected) and T12 (34.82 +/- 31.40 nM/10(6) cells) was significantly lower than that of PMNs preincubated with culture medium (136.09 +/- 70.41 nM/10(6) cells; p < 0.05, each). Inhibition of superoxide production by PMNs by preincubation with culture supernatant of Streptococcus was increased by the protein in the culture supernatant in a concentration-dependent manner. These findings suggest that frequent and/or persistent streptococcal infections may reduce the superoxide production by PMNs, leading to recurrent episodes of tonsillitis.
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PMID:[Superoxide production by neutrophils in patients with recurrent tonsillitis]. 786 Dec 98

Superoxide radicals generated in the palatal tonsils by recurrent local infections cause an organic response consistent in synthesis of superoxide dismutase. Tonsillar concentrations of this enzyme correlate with the incidence of tonsillitis. Moreover, superoxide dismutase levels in erythrocytes rise in children proportional to tonsillar concentration in a statistically significant way (y = 0.2356x - 64.918; R2 = 0.9266). The similarities in local and systemic changes in recurrent tonsillitis suggest that the determination of superoxide dismutase in peripheral blood could be a good screening method for determining who should undergo tonsillectomy.
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PMID:[The measurement of superoxide dismutase levels in recurrent tonsillitis. Its practical use]. 1050 8