Passive smoking does not increase hydrogen peroxide (H2O2) levels in exhaled breath condensate in 9-year-old healthy children.

Abstract:

:Environmental tobacco smoke, also called passive smoking, was shown to have adverse effects on the health of children. Hydrogen peroxide (H2O2) is proposed as a sensitive marker of oxidative injury and inflammatory processes in the airways, being increased in adult active cigarette smokers. We tested whether passive smoking had an influence on H2O2 exhalation in healthy children. Thirty healthy passive smoking and 24 nonexposed healthy children aged 9 years were included in the study. Exhaled breath condensate (EBC) was obtained by spontaneous tidal volume breathing with EcoScreen (Jaeger, Germany). All subjects underwent flow-volume measurements immediately after EBC collection. Levels of H2O2 were measured fluorimetrically with the homovanillic acid method. Lung function did not differ between the passive smoking and nonexposed children groups. In the passive smoking group, EBC H2O2 concentration (median and range) was 0.32 (0.00-1.20) microM, and did not differ significantly (P >0.05) from that found in the nonexposed group, i.e., 0,22 (0.00-0.68) microM. Exhaled H2O2 did not correlate with spirometric parameters (FEV1, FEV1%FVC, and MEF50%FVC) in either group. We conclude that passive smoking does not increase H2O2 exhalation in healthy children.

journal_name

Pediatr Pulmonol

journal_title

Pediatric pulmonology

authors

Doniec Z,Nowak D,Tomalak W,Pisiewicz K,Kurzawa R

doi

10.1002/ppul.20129

subject

Has Abstract

pub_date

2005-01-01 00:00:00

pages

41-5

issue

1

eissn

8755-6863

issn

1099-0496

journal_volume

39

pub_type

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