Effect of clarithromycin on cytokines and chemokines in children with an acute exacerbation of recurrent wheezing: A double-blind, randomized, placebo-controlled trial

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Abstract

Background: Clarithromycin is postulated to possess immunomodulatory properties in addition to its antimicrobial activity. Objective: To evaluate the effect of clarithromycin on serum and nasopharyngeal cytokine and chemokine concentrations in children with an acute exacerbation of recurrent wheezing. Methods: Children with a history of recurrent wheezing or asthma and who presented with an acute exacerbation of wheezing were enrolled in a double-blind, randomized trial of clarithromycin vs placebo. Concentrations of tumor necrosis factor a (TNF-α), interferon-γ (IFN-γ), interleukin-1β (IL-1β), IL-2, IL-4, IL-5, IL-6, IL-8, IL-10, granulocyte-macrophage colony-stimulating factor, RANTES, eotaxin, macrophage inflammatory protein 1α, macrophage inflammatory protein 1β, and monocyte chemoattractant protein 1 were measured in serum and/or nasopharyngeal aspirates before, during, and after therapy. Mycoplasma pneumoniae and Chlamydophila pneumoniae infection were evaluated for by polymerase chain reaction and serologic testing. Results: Nasopharyngeal concentrations of TNF-α, IL-1β, and IL-10 were significantly and persistently lower in children treated with clarithromycin compared with placebo. There tended to be a greater effect of clarithromycin on nasopharyngeal cytokine concentrations in patients with evidence of C pneumoniae or C pneumoniae infection. No significant differences were detected in serum cytokines for children treated with clarithromycin compared with placebo. Conclusion: Clarithromycin therapy reduces mucosal TNF-α, IL-1β, and IL-10 concentrations in children with an acute exacerbation of recurrent wheezing.

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Fonseca-Aten, M., Okada, P. J., Bowlware, K. L., Chavez-Bueno, S., Mejias, A., Rios, A. M., … Hardy, R. D. (2006). Effect of clarithromycin on cytokines and chemokines in children with an acute exacerbation of recurrent wheezing: A double-blind, randomized, placebo-controlled trial. Annals of Allergy, Asthma and Immunology, 97(4), 457–463. https://doi.org/10.1016/S1081-1206(10)60935-0

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