Abstract:
BACKGROUND:The diagnosis of allergic reactions to drugs is difficult. Most skin tests are not standardized, and in vitro tests are needed to avoid provocation tests. Cross-linking of IgE on basophils is known to cause the release of both cysteinyl leukotriene (Cys-LT) and histamine. We aimed to evaluate the diagnostic utility (sensitivity, specificity, and efficiency) of measurement of sulfidoleukotrienes in drug allergy. METHODS:We performed a prospective study in 55 patients with proven immediate adverse reactions to drugs (30 to beta-lactams, six to acetaminophen, and 19 to aspirin) and 64 drug-exposed nonallergic controls. Positive diagnosis was established by history, skin tests, and, if needed, oral provocation tests. Cys-LT release was determined after drug-allergen stimulation by the cellular antigen stimulation test (CAST(R)) technique. Histamine release was also assessed on the same samples by enzyme immunoassay. Spontaneous and anti-FcepsilonRIalpha-induced mediator release was also studied in all subjects. Sensitivity, specificity, and efficiency were calculated. RESULTS:Net Cys-LT release was over the maximal threshold given by the manufacturer in 19/55 patients and in 9/64 controls. Net histamine release was over 5% of total histamine content in 28/55 patients and 34/64 controls. The efficiency of both tests was low. CONCLUSION:Thus, in most cases, the in vitro Cys-LT test has little or no diagnostic utility and is not superior to histamine release.
journal_name
Allergyjournal_title
Allergyauthors
Lebel B,Messaad D,Kvedariene V,Rongier M,Bousquet J,Demoly Pdoi
10.1034/j.1398-9995.2001.00103.xkeywords:
subject
Has Abstractpub_date
2001-07-01 00:00:00pages
688-92issue
7eissn
0105-4538issn
1398-9995pii
all103journal_volume
56pub_type
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