Greater susceptibility of girls to airborne Benzo[a]pyrene for obesity-associated childhood asthma

0495271 - ÚEM 2019 RIV US eng J - Journal Article
Choi, H. - Dostál, Miroslav - Pastorková, Anna - Rössner ml., Pavel - Šrám, Radim - Ho, S. M.
Greater susceptibility of girls to airborne Benzo[a]pyrene for obesity-associated childhood asthma.
Environment International. Roč. 121, dec. (2018), s. 308-316. ISSN 0160-4120. E-ISSN 1873-6750
R&D Projects: GA MŠMT(CZ) 2B08005
Institutional support: RVO:68378041
Keywords : air pollution * asthma * obesity
OECD category: Public and environmental health
Impact factor: 7.943, year: 2018

Background: Sexually dimorphic risk of obesity-associated asthma is posited to accelerate around puberty. Yet, the role of air pollution on the lean and obese asthmatic children has never been examined.

Objective: To compare whether a unit exposure to airborne benzo[a]pyrene (B[a]P) is associated with altered risks of asthma across the overweight/obese (OV/OB) control, lean asthmatic, and OV/OB asthmatic children, respectively, compared to the lean controls, before and after adjusting for oxidant stress markers (i.e. 15-F2t-IsoP, 8-oxo-dG, and Carbonyl).

Methods: Asthmatic and healthy control children, recruited from polluted urban and rural areas, were matched to ambient concentration of B[a]P. A unit increase in B[a]P and multinomial logistic regression on OV/OB control, lean asthmatic, and OV/OB asthma were compared across the sex- and age-groups.

Results: The median B[a]P was associated with a linear increase among the female children, according to OV/OB and asthma, respectively, and together, compared to the lean control girls (p = 0.001). While B[a]P was associated with positive relationship with 15-F2t-IsoP level among the OV/OB boys, the same exposure-outcome association was inverse among the OV/OB girls. One natural log-unit increase in ambient B[a]P was associated with 10.5-times greater odds (95% CI, 2.6-39.6, p = 0.001) the adolescent OV/OB boys, compared to the unit odds among the lean controls. In contrast, the adolescent OV/OB girls were associated with highest adjusted odds of the asthma (aOR = 15.4, 95% CI, 2.9-29.1, p < 0.001) compared to the lean control girls. An adjustment for 15-F2t-IsoP, and Carbonyls was associated with greater odds of asthma per unit exposure for the adolescent OV/OB girls (aOR = 16.2, 95% CI, 1.4-181.8, p = 0.024).

Conclusions: B[a]P exposure was associated with a leap in the odds of asthma among the OV/OB adolescents, particularly the girls, after adjusting for 15-F2t-IsoP and Carbonyls.
Permanent Link: http://hdl.handle.net/11104/0288270