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Health effects of ultraviolet irradiation in asthmatic children's homes

Jonathan A Bernstein1, R Carter Bobbitt, Linda Levin

  • 1Department of Internal Medicine, Division of Immunology, Allergy Section, Cincinnati, Ohio, USA. jonathan.Bernstein@uc.edu

The Journal of Asthma : Official Journal of the Association for the Care of Asthma
|July 1, 2006
PubMed

Insights

Central UV irradiation improved peak expiratory flow rate variability and reduced asthma symptoms in children with mold allergies. Further research is needed to confirm these health benefits for allergic asthma management.

Area of Science:

  • Environmental Health
  • Pediatric Allergy
  • Respiratory Medicine

Background:

  • Mold sensitization is a common trigger for asthma in children.
  • Indoor air quality significantly impacts allergic asthma symptoms and severity.
  • Current interventions focus on allergen avoidance and medication, with a need for novel environmental strategies.

Purpose of the Study:

  • To evaluate the health benefits of centrally installed ultraviolet (UV) irradiation units in mold-sensitized asthmatic children.
  • To assess the impact of UV irradiation on clinical outcomes and indoor environmental parameters.

Main Methods:

  • A 28-week double-blinded placebo-controlled cross-over trial involving 19 mold-sensitized asthmatic children (ages 5-17).
  • Clinical outcomes included peak expiratory flow rates (PEFR), symptom scores, quality-of-life, and medication use.
  • Environmental monitoring assessed temperature, humidity, dew point, and airborne mold/bacterial counts.

Main Results:

  • A statistically significant improvement in PEFR variability was observed with UV irradiation (p < 0.05).
  • UV treatment led to significant reductions in asthma symptom scores and medication use during the first treatment period (p < 0.05).
  • No significant differences were found for other clinical or environmental outcomes between UV and placebo units.

Conclusions:

  • Central UV irradiation shows potential in reducing airway hyperresponsiveness (PEFR variability) and certain clinical symptoms in asthmatic children.
  • UV irradiation may be a viable indoor environmental intervention for allergic asthma.
  • Larger, controlled longitudinal studies are required to validate these findings and confirm clinical health effects.
Abstract

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