Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0042109 (urticaria)
 6,569 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Although rare, anaphylactic reactions induced by proton pump inhibitors have been reported. The presence of cross-reactivity between different members of the group is not clear. We studied 9 patients with adverse reactions to omeprazole. Clinical symptoms appeared immediately in 8 patients and after 4 hours in 1. Symptoms ranged from urticaria/angioedema in 7 cases to anaphylaxis in 2 cases. Skin prick tests and oral controlled challenge tests with omeprazole, lansoprazole, and pantoprazole were performed. Skin prick or intradermal tests with omeprazole were positive in 8 patients. Four were also positive to pantoprazole. Prick tests with lansoprazole were always negative. Lansoprazole was administered to all 9 patients, with good tolerance in 8. Only 3 patients were challenged with pantoprazole and developed widespread urticaria. We present 9 patients with immunoglobulin E-mediated allergy to omeprazole. In most of our cases, lansoprazole proved to be a good alternative treatment.
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PMID:Nine cases of omeprazole allergy: cross-reactivity between proton pump inhibitors. 1927 31

Although rare, anaphylactic reactions induced by PPIs have been reported. The presence of cross-reactivity between different members of the group is not clear. We analyzed all cases of allergic skin reactions to PPIs notified in regional pharmacovigilance center of Sfax during a 12 years period and assessed the possibility of cross-reactions between different molecules of this class. An enquiry of pharmacovigilance was conducted for each case according to the French imputation method. We called then, all patients who developed an allergic reaction to a PPI with a plausible or credible imputation. A patch test to all the molecules was carried out to study the possibility of cross-reactivity between PPIs. Thirty-seven patients have developed skin disease, with a total of 1 172 cutaneous adverse effects (3%) notified in our regional pharmacovigilance center. The skin disease most frequently observed was maculopapular rash (19 cases or 51%), followed by urticaria in 9 cases (24%). The omeprazole was the most implicated in the genesis of these adverse events (in 31 cases: 83.78%). Lansoprazole was administered to 5 patients having allergy to omeprazole with good tolerance. Patch tests were realized for6 patients having allergy to omeprazole. They were positive with omeprazole at 72 h in all cases and negative with lansoprazole in 5 cases. In one third of cases, lansoprazole was a good alternative at patients developing allergy to omeprazole, esomeprazole or pantoprazole. In one case we have contraindicated all PPIs. In the other cases we have preconized surveillance for the use of lansoprazole.
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PMID:[Study of cross reactivity between proton pump inhibitors]. 2435 87