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Paper-Based Preconcentration and Isolation of Microvesicles and Exosomes
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W J Fokkens1

  • 1Department of Otorhinolaryngology, Amsterdam University Medical Centres Location AMC, The Netherlands.

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Summary
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Local allergic rhinitis (LAR) impacts quality of life. Identifying LAR patients through medical history is crucial, as they differ significantly from non-allergic rhinitis (NAR) patients, impacting asthma risk and treatment.

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Area of Science:

  • Allergy and Immunology
  • Otorhinolaryngology
  • Respiratory Medicine

Background:

  • Non-allergic rhinitis (NAR) encompasses various phenotypes, including local allergic rhinitis (LAR), with significant impact on quality of life.
  • The prevalence of LAR is highly variable in existing literature, necessitating clearer diagnostic criteria.
  • Immunoglobulin E (IgE) in nasal secretions is a key factor in understanding allergic responses within the nasal cavity.

Purpose of the Study:

  • To review the existing literature on local allergic rhinitis (LAR) and its prevalence.
  • To investigate the role of IgE in nasal secretions for diagnosing LAR.
  • To differentiate LAR patients from the broader non-allergic rhinitis (NAR) population.

Main Methods:

  • Systematic review of studies reporting on the prevalence and diagnosis of LAR.
  • Analysis of IgE levels in nasal secretions as a diagnostic marker for LAR.
  • Comparison of clinical characteristics and patient history between LAR and NAR populations.

Main Results:

  • Overall prevalence of IgE in nasal secretions was 10.2%.
  • Prevalence of IgE in nasal secretions increased to 19.8% in patients with a history of aeroallergen triggers or seasonal symptoms.
  • Patients without suggestive allergy history or negative systemic tests showed 0% probability of detectable nasal IgE.

Conclusions:

  • Medical history taking is a simple yet effective method for identifying potential LAR patients within the NAR population.
  • LAR patients exhibit distinct clinical features and symptom profiles compared to other NAR phenotypes.
  • Accurate identification of LAR is important due to differences in asthma development likelihood and treatment responsiveness.