Beyond anti-microbial properties: The role of cathelicidin in allergic rhinitis

Allergologia et immunopathologia
F DilekErkan Cakir

Abstract

Cathelicidin, an anti-microbial peptide, is a component of the innate immune system. Cathelicidin has anti-microbial, anti-inflammatory and immunoregulatory functions. Knowledge about the role of the innate immune system in the pathogenesis of allergic diseases has expanded in recent years. We measured levels of the LL-37 peptide in the nasal fluids of children with allergic rhinitis (AR) and investigated the possible role of this peptide in the pathogenesis of AR. The study population included 46 children who were newly diagnosed with AR and not taking any medication. Thirty-three healthy control subjects were also enrolled. Nasal secretions were collected from the study and control groups using a polyurethane sponge nasal secretion collector, and nasal fluid LL-37 levels were determined using the ELISA method. The levels of LL-37 in the nasal fluid of the AR patients were lower than those of the control group (median of 2.3ng/ml [minimum-maximum, 2.1-3.2] vs. 2.6ng/ml [2.1-5.4], respectively; p<0.001), and they were significantly reduced in patients with moderate/severe AR compared with those of patients with mild AR (2.2ng/ml [2.1-2.4] vs. 2.5ng/ml [2.1-3.1], respectively; p<0.001). Our results show that children with AR hav...Continue Reading

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Citations

Nov 24, 2021·Immunity, Inflammation and Disease·Annabelle M WattsAmanda J Cox

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