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Updated: Dec 2, 2025

Methods for Detecting Cough and Airway Inflammation in Mice
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Methods for assessing cough sensitivity.

Yonglin Mai1,2, Liman Fang1, Shuxin Zhong1

  • 1State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.

Journal of Thoracic Disease
|November 4, 2020
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Summary

Assessing cough reflex sensitivity using various cough challenge tests is crucial for understanding cough mechanisms and treatment effectiveness. This review details chemical and mechanical methods for measuring cough sensitivity and factors affecting accuracy.

Keywords:
Cough sensitivityassessmentinhalation challengesmechanical challenges

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Area of Science:

  • Respiratory Medicine
  • Neuroscience
  • Pharmacology

Background:

  • Cough sensitivity reflects the vagal afferent nerve response to airway stimuli.
  • Accurate measurement is vital for understanding cough mechanisms and evaluating drug efficacy.
  • Variations in response to cough suppressants suggest cough hypersensitivity, necessitating objective assessment.

Purpose of the Study:

  • To review methodologies for measuring cough reflex sensitivity.
  • To detail chemical and mechanical cough challenge tests.
  • To identify factors influencing the accuracy of experimentally induced cough outcomes.

Main Methods:

  • Review of existing literature on cough sensitivity measurement techniques.
  • Description of chemical cough challenge tests using agents like capsaicin and citric acid.
  • Exploration of emerging mechanical methodologies for assessing cough reflex sensitivity.

Main Results:

  • Chemical challenge tests (capsaicin, citric acid) are validated for assessing sensitivity to irritants.
  • Mechanical methodologies are being developed to measure cough reflex mechanical sensitivity.
  • Methodological selection is critical for accurate cough sensitivity assessment in clinical trials.

Conclusions:

  • Objective assessment of cough sensitivity requires diverse cough challenge tests.
  • Both chemical and mechanical methods contribute to understanding cough reflex pathways.
  • Careful consideration of methodology ensures reliable outcomes in cough research.