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Randomized Controlled Trial
. 2013 Dec 23:2013:927835.
doi: 10.1155/2013/927835. eCollection 2013.

Reducing agents decrease the oxidative burst and improve clinical outcomes in COPD patients: a randomised controlled trial on the effects of sulphurous thermal water inhalation

Marco Contoli  1 , Giulia Gnesini  1 , Giacomo Forini  1 , Brunilda Marku  1 , Alessia Pauletti  1 , Anna Padovani  1 , Paolo Casolari  1 , Liliana Taurino  1 , Andrea Ferraro  1 , Milva Chicca  2 , Adalberto Ciaccia  1 , Alberto Papi  1 , Silvano Pinamonti  2
Affiliations
Randomized Controlled Trial

Reducing agents decrease the oxidative burst and improve clinical outcomes in COPD patients: a randomised controlled trial on the effects of sulphurous thermal water inhalation

Marco Contoli et al. ScientificWorldJournal. .

Abstract

Background: Inhalation of thermal water with antioxidant properties is empirically used for COPD.

Aims: To evaluate the effects of sulphurous thermal water (reducing agents) on airway oxidant stress and clinical outcomes in COPD.

Methods: Forty moderate-to-severe COPD patients were randomly assigned to receive 12-day inhalation with sulphurous thermal water or isotonic saline. Patients were assessed for superoxide anion (O2 (-)) production in the exhaled breath condensate and clinical outcomes at recruitment, the day after the conclusion of the 12-day inhalation treatment, and one month after the end of the inhalation treatment.

Results: Inhalation of reducing agents resulted in a significant reduction of O2 (-) production in exhaled breath condensate of COPD patients at the end of the inhalatory treatment and at followup compared to baseline. A significant improvement in the COPD assessment test (CAT) questionnaire was shown one month after the end of the inhalatory treatment only in patients receiving sulphurous water.

Conclusion: Thermal water inhalation produced an in vivo antioxidant effect and improvement in health status in COPD patients. Larger studies are required in order to evaluate whether inhalation of thermal water is able to modify relevant clinical outcomes of the disease (the study was registered at clinicaltrial.gov-identifier: NCT01664767).

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Figures

Figure 1
Figure 1
Superoxide anion production in COPD patients at the baseline, at the end of the inhalation treatment, and one month after the end of the treatment.
Figure 2
Figure 2
Total sputum cell counts in COPD patients at the baseline, at the end of the inhalation treatment, and one month after the end of the treatment.
Figure 3
Figure 3
Lung function parameters (postbronchodilator FEV1 and residual volume) in COPD patients at the baseline, at the end of the inhalation treatment, and one month after the end of the treatment.
Figure 4
Figure 4
COPD Assessment Test (CAT) questionnaire in COPD patients at the baseline, at the end of the inhalation treatment, and one month after the end of the treatment.
Figure 5
Figure 5
Correlation between changes in COPD Assessment Test (CAT) questionnaire score and superoxide anion production in exhaled breath condensate of COPD treated with sulphurous thermal water at one month after the end of the inhalatory treatment compared to baseline.
See this image and copyright information in PMC

References

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