The Role of Substance P Receptor Antagonists in Allergic Rhinitis: Ovalbumin‐Induced Rat Model

Author:

Becerik Çağrı1ORCID,Karaca Çiğdem T.2ORCID,Özcan Zühal3ORCID,Kul Selim4ORCID,Toros Sema Z.2ORCID

Affiliation:

1. Department of Otorhinolaryngology Kemalpaşa State Hospital İzmir Turkey

2. Department of Otorhinolaryngology, Haydarpaşa Numune Training and Research Hospital University of Health Sciences İstanbul Turkey

3. Department of Pathology, Haydarpaşa Numune Training and Research Hospital University of Health Sciences İstanbul Turkey

4. Department of Otorhinolaryngology Çerkezköy State Hospital Tekirdağ Turkey

Abstract

ObjectiveSubstance P is a peptide from the tachykinin family, which is found in peripheral and central nervous systems, causing vasodilation and increased secretion in the nasal mucosa. In this study, we aimed to investigate whether the experimental model of allergic rhinitis will cause allergic changes in the larynx and to compare the effects of aprepitant, a substance P antagonist, on nasal symptoms in allergic rhinitis, and histopathological changes in the nasal and laryngeal mucosa with antihistamine and leukotriene receptor antagonists (LTRA).Study DesignAn experimental animal study.MethodThe study was carried out on 34 healthy 8–12 weeks old female Sprague Dawley rats in 5 groups. The rats in which an experimental allergic rhinitis model was created with ovalbumin were scored by observing their nasal symptoms, and nasal and laryngeal mucous membranes included in the study were evaluated histopathologically after medications.ResultsAs a result of the analysis of the data obtained from the study, antihistamine and LTRA significantly reduced the symptoms of nose scratching and sneezing, while aprepitant did not affect nasal symptoms. In the histopathological examination of the larynx, effects that would make a significant difference were found in the allergy group when compared to the control group. On the larynx, aprepitant reduced pseudostratification significantly compared to the allergy group.ConclusionAprepitant provides histopathological changes in the treatment of allergic rhinitis, but does not have sufficient effect on nasal symptoms. The effect of aprepitant on the larynx has not been clearly demonstrated.Level of EvidenceNA Laryngoscope, 133:2891–2897, 2023

Funder

University of Health Sciences Lahore

Publisher

Wiley

Subject

Otorhinolaryngology

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