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Olfaction and Its Correlates in Allergic Rhinitis: A Case Control Study

  • Neelima GuptaEmail author
  • Anshika Harit
  • H. C. Taneja
  • Raj Kumar
  • A. K. Tripathi
Original Article
  • 33 Downloads

Abstract

Olfactory dysfunction is frequent in rhinological disease. It has been attributed to nasal obstruction leading to impairment of transport of odorants to the olfactory epithelium or to inflammation in the olfactory cleft. We assessed olfaction in allergic rhinitis and correlated the olfactory score with other variables; in order to elucidate the pathogenesis of olfactory impairment in allergic rhinitis. Forty patients of allergic rhinitis (skin prick test positive) and forty healthy controls were included. The groups were evaluated for olfactory score, nasal airflow, peripheral eosinophilia, and levels of IgE and IL-5 in nasal secretions. The combined olfactory score in the patients was lower than that in controls. The score was better in patients with a better nasal airflow, but no significant association was found between the two. The peripheral eosinophilia and IgE and IL-5 level in nasal secretions was significantly higher in patients but demonstrated no significant correlation with the olfactory score. Allergic rhinitis patients had a decreased olfactory score; which weakly correlated to the nasal airflow. Local IgE and IL-5 were elevated in allergic rhinitis but did not show a significant correlation with olfactory scores. Our study concludes that both factors exist in allergic rhinitis but which factor is significantly responsible for hyposmia is not clear.

Keywords

Olfaction Allergic rhinitis Hyposmia Inflammatory markers 

Notes

Acknowledgements

Professor P P Singh, Head of the department provided infrastructure support and research support. The study was funded by an Intramural Grant from the University College of Medical Sciences, University of Delhi. Since it was an internal Grant provided to postgraduate students for research it did not have a Grant number.

Compliance with Ethical Standards

Conflict of interest

All authors declare that they have no conflict of interest.

Ethical Approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Informed Consent

Informed consent was obtained from all individual participants included in the study.

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Copyright information

© Association of Otolaryngologists of India 2017

Authors and Affiliations

  • Neelima Gupta
    • 1
    Email author
  • Anshika Harit
    • 1
  • H. C. Taneja
    • 1
  • Raj Kumar
    • 2
  • A. K. Tripathi
    • 3
  1. 1.Department of Otorhinolaryngology, University College of Medical Sciences and GTB HospitalUniversity of DelhiDelhiIndia
  2. 2.Department of Respiratory Allergy and Applied Immunology, V P Chest InstituteUniversity of DelhiDelhiIndia
  3. 3.Department of Biochemistry, University College of Medical Sciences and GTB HospitalUniversity of DelhiDelhiIndia

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