JOURNAL ARTICLE

Safety of the new selective cyclooxygenase type 2 inhibitors rofecoxib and celecoxib in patients with anaphylactoid reactions to nonsteroidal anti-inflammatory drugs

Joaquin Quiralte, Julio Delgado, Blanca Sáenz de San Pedro, Esperanza López-Pascual, Maria Angustias Nieto, Nancy Ortega, Jose Fernando Florido, José Conde
Annals of Allergy, Asthma & Immunology 2004, 93 (4): 360-4
15521372

BACKGROUND: Controlled oral challenge with nonsteroidal anti-inflammatory drugs (NSAIDs) is the only definite way to detect safe NSAIDs in patients with NSAID-induced anaphylactoid reactions.

OBJECTIVE: To evaluate the safety of the selective cyclooxygenase (COX) type 2 inhibitors rofecoxib and celecoxib in patients with single-reactive, NSAID-induced anaphylactoid reactions.

METHODS: We prospectively conducted single-blind, placebo-controlled oral challenges (SBPCOCs) with rofecoxib and celecoxib in 33 patients with single-reactive, NSAID-induced anaphylactoid reactions.

RESULTS: Nineteen women and 14 men (age range, 20-78 years; mean age, 44.8 years) exhibited anaphylactoid reactions on emergency department admission. Symptoms involved the skin (100%), laryngeal edema (73%), systolic hypotension (39%), and the gastrointestinal system (15%). The NSAIDs most frequently involved in the episodes were dipyrone (64%), propyphenazone (12%), and diclofenac (12%). In all patients, tolerance to a potent, nondiscriminatory COX inhibitor (except those reported as being responsible for the reaction) was noted. The SBPCOCs with the selective COX-2 inhibitors celecoxib and rofecoxib were well tolerated in all cases. Twenty-three patients who had an anaphylactoid reaction involving dipyrone and propyphenazone showed good tolerance to celecoxib (which contains a pyrazole group in its structure) on challenge.

CONCLUSIONS: The SBPCOCs with highly selective COX-2 inhibitors were safe in patients with single-reactive, NSAID-induced anaphylactoid reactions, even in cases that involved pyrazole derivatives.

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