Sulfonamide-reactive lymphocytes detected at very low frequency in the peripheral blood of patients with drug-induced eruptions.
J Allergy Clin Immunol
; 94(3 Pt 1): 465-72, 1994 Sep.
Article
em En
| MEDLINE
| ID: mdl-8083451
ABSTRACT
BACKGROUND:
The role of T lymphocytes in mediating drug eruptions is uncertain.METHODS:
Twenty-four patients with eruptions induced by sulfonamide-related drugs were studied to detect lymphocyte reactivity to drugs. Both the lymphocyte transformation test and limiting dilution analysis were used as assays for drug-reactive lymphocytes. Peripheral blood lymphocytes were expanded in interleukin-2 and tested for reactivity to sulfamethoxazole and furosemide.RESULTS:
The lymphocyte transformation test results to sulfamethoxazole, sulfisoxazole, and furosemide were found to be generally unreliable with a high rate of false-negative and false-positive results. However, as determined by limiting dilution analysis, sulfamethoxazole-reactive lymphocytes were detected in the peripheral blood of one patient at a frequency of 1/172,000. This is within the lower range of frequencies of urushiol-reactive T cells in the peripheral blood of patients with allergic contact dermatitis to urushiol (poison ivy). Two sulfonamide-reactive lymphocyte lines were cultured from two patients. Both lines proliferated in response to sulfamethoxazole but not in response to furosemide, suggesting that furosemide does not cross-react with the sulfonamides.CONCLUSIONS:
Lymphocytes reactive to sulfamethoxazole were detected at low frequencies in the peripheral blood of three patients with drug eruptions secondary to administration of sulfamethoxazole.
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Base de dados:
MEDLINE
Assunto principal:
Sulfisoxazol
/
Linfócitos T
/
Combinação Trimetoprima e Sulfametoxazol
/
Toxidermias
/
Furosemida
Idioma:
En
Ano de publicação:
1994
Tipo de documento:
Article