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- Johansson, Ewa-LenaGothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för hälsa och rehabilitering,Institute of Neuroscience and Physiology, Department of Health and Rehabilitation (author)
Small and large airways' reactions to inhaled capsaicin in patients with chronic idiopathic cough, or asthma and in healthy control subjects
- Article/chapterEnglish2019
Publisher, publication year, extent ...
- 2019-05-15
- Informa UK Limited,2019
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- LIBRIS-ID:oai:gup.ub.gu.se/281826
- https://gup.ub.gu.se/publication/281826URI
- https://doi.org/10.1080/01902148.2019.1611971DOI
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- Language:English
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- Aims: Cough is a common medical problem, and when it persists for more than 8 weeks it is arbitrarily defined as chronic. While spirometry assesses the large airways, impulse oscillometry system (IOS) measures peripheral airway function. The present study investigated whether provocation with inhaled capsaicin affects the large and small airways in patients with chronic idiopathic cough (CIC) or asthma and in healthy controls. Materials and methods: Twenty-one patients with CIC, 18 patients with asthma, and 22 healthy controls were subjected to a provocation with capsaicin, and lung function was assessed by IOS and spirometry. Results: At baseline, before the capsaicin provocation, the CIC group had significantly increased airway resistance compared to the controls. After capsaicin provocation, the CIC group exhibited a significant increase in total airway resistance. The asthma group showed a small but significant reduction in spirometry, increased airway resistance, and reactance after capsaicin provocation. Capsaicin inhalation affected neither the spirometry nor the IOS of the healthy controls. Conclusions: The present study demonstrates that inhaled capsaicin induces changes in lung function, both in patients with CIC and in patients with asthma, when IOS, which measures changes also in the peripheral airways, is used. IOS appears to be a more sensitive tool than spirometry for the detection of airway impairment in airway provocation studies. In patients with CIC, higher peripheral resistance at baseline may have clinical significance.
Subject headings and genre
- MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Lungmedicin och allergi hsv//swe
- MEDICAL AND HEALTH SCIENCES Clinical Medicine Respiratory Medicine and Allergy hsv//eng
- Asthma
- Capsaicin
- Cough
- Lung function
- Impulse oscillometry system
- forced oscillation technique
- impulse oscillometry
- responsiveness
- methacholine
- expression
- receptor
- adults
- standardization
- provocation
- sensitivity
- Respiratory System
- erk pj
- 1993
- european respiratory journal
- v6
- p53
Added entries (persons, corporate bodies, meetings, titles ...)
- Gustafsson, P. (author)
- Millqvist, Eva,1949Gothenburg University,Göteborgs universitet,Institutionen för medicin,Institute of Medicine(Swepub:gu)xmilev (author)
- Ternesten-Hasséus, Ewa,1956Gothenburg University,Göteborgs universitet,Institutionen för medicin,Institute of Medicine(Swepub:gu)xterew (author)
- Göteborgs universitetInstitutionen för neurovetenskap och fysiologi, sektionen för hälsa och rehabilitering (creator_code:org_t)
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- In:Experimental Lung Research: Informa UK Limited45:3-40190-21481521-0499
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