Altitude healing effect in severe asthmatic children.

Area of Science:

• Pediatric Pulmonology
• Environmental Medicine
• Immunology

Background:

• The therapeutic benefits of high-altitude climatic therapy for childhood asthma are recognized, but underlying mechanisms remain unclear.
• This study explored the roles of TH2 pathway cytokines, reactive oxygen species (ROS), and reactive nitrogen species (RNS) during high-altitude therapy.

Purpose of the Study:

• To investigate the immunological and physiological changes associated with high-altitude climatic therapy in children with severe asthma.
• To elucidate the mechanisms behind the beneficial effects of this treatment.

Main Methods:

• 67 children with uncontrolled severe asthma underwent a year-long high-altitude climatic therapy in Briançon.
• Assessments included asthma control, lung function (spirometry, peak flow), exhaled nitric oxide (NO), ROS, RNS, and plasma TH2 cytokines (IL-13, IL-10).

Main Results:

• Asthma control and quality of life improved at high altitude, worsening upon return home.
• Peak expiratory flow initially improved but declined upon returning home; spirometry parameters remained unchanged.
• Exhaled NO levels mirrored quality of life scores, while ROS/RNS in exhaled breath condensate showed no significant change.
• A significant decrease in IL-13 and IL-10 levels was observed.

Conclusions:

• High-altitude climatic therapy appears beneficial for children with allergic asthma.
• The therapeutic effect is likely mediated by reduced allergenic stimulation and modulation of TH2 cytokine profiles.