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  • Title: Application of leucocyte migration tests to detection of allergenic drugs in patients with hypersensitivity to beta-lactam antibiotics.
    Author: Uno K, Yamasaku F.
    Journal: J Antimicrob Chemother; 1989 Aug; 24(2):241-50. PubMed ID: 2793647.
    Abstract:
    In 90 suspected cases of beta-lactam hypersensitivity manifesting exanthema, pyrexia and hepatopathic symptoms, the identities of the allergenic drugs were investigated by immediate type skin reactions, sensitized erythrocyte agglutination tests and leucocyte migration inhibition tests (LMIT). In addition 30 control patients were tested for hypersensitivity to ampicillin, cephalexin and latamoxef. The control patients manifested the same symptoms as the patients with suspected hypersensitivity to beta-lactam but had not been treated with beta-lactam antibiotics. In the immediate type skin reaction, all the control cases as well as all the suspected beta-lactam hypersensitive patients displayed negative reactions to each of the antibiotics tested. In the sensitized erythrocyte agglutination tests, no antibodies to any of the three drugs were detected in the control group, while antibodies with a titre of 1:2 or more were detected in only 7% (6/90) of the suspected beta-lactam hypersensitive patients. On the other hand, in the LMIT, only 4% (4/90) of the control patients displayed positive reactions to the three test antibiotics, whereas the suspected sensitizing drugs elicited a high rate of positive responses (68/90; 76%) in the group of suspected beta-lactam hypersensitive patients. Broken down into symptomatic categories, response to the LMIT was positive in 41 of 58 cases of suspected drug rash (71%), 26 of 26 cases of suspected drug fever (96%), and 20 of 24 cases of suspected drug-induced hepatopathy (83%). Thus, the pyrexial group exhibited a particularly high ratio of positive reactions, and in fact exanthemic cases with concomitant symptoms (eosinophilia, pyrexia, hepatopathy, etc.) also displayed a notably high ratio of positives (19/20; 95%). The overall results indicated that delayed type hypersensitivity (DTH) is largely involved in exanthema, pyrexia and hepatopathy induced by beta-lactam antibiotics, and that the LMIT constitutes an effective means of detecting allergenic drugs in patients with beta-lactam hypersensitivity.
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