The LINA cohort: indoor chemical exposure, circulating eosinophil/basophil (Eo/B) progenitors and early life skin manifestations
Article first published online: 28 AUG 2012
© 2012 Blackwell Publishing Ltd
Clinical & Experimental Allergy
Volume 42, Issue 9, pages 1337–1346, September 2012
How to Cite
K. Weisse, I. Lehmann, D. Heroux, T. Kohajda, G. Herberth, S. Röder, M. von Bergen, M. Borte, J. Denburg, Clinical & Experimental Allergy, 2012 (42) 1337–1346.
- Issue published online: 28 AUG 2012
- Article first published online: 28 AUG 2012
- Accepted manuscript online: 30 APR 2012 03:23AM EST
- Manuscript Accepted: 12 APR 2012
- Manuscript Revised: 28 MAR 2012
- Manuscript Received: 6 FEB 2012
- Helmholtz Centre for Environmental Research – UFZ
- German Academic Exchange Service (DAAD)
- AllerGen NCE Inc
- atopic dermatitis;
- cradle cap;
- eosinophil/basophil progenitors;
- indoor chemical exposure;
- LINA ;
- 1-year-old children;
Hematopoietic progenitor cells, especially those committed to the Eo/B lineage, are known to contribute to allergic inflammation.
The aim of the present study was to investigate whether environmental factors are associated with changes in numbers of circulating Eo/B progenitors at 1 year of age.
Peripheral blood from 60 1-year-old children enrolled in the LINA (Lifestyle and environmental factors and their Influence on Newborns Allergy risk) birth cohort was assessed for Eo/B progenitor cells (Eo/B CFU) using standardized and validated methylcellulose assays. Frozen peripheral blood mononuclear cells (PBMC) were cultured in the presence of IL-3, IL-5 or GM-CSF, and Eo/B CFUs enumerated. Clinical outcomes and exposure to environmental tobacco smoke (ETS) were documented by standardized questionnaires, and indoor volatile organic compound (VOC) concentrations were assessed by passive sampling.
Children with skin manifestations (atopic dermatitis or cradle cap) within the first year of life had higher numbers of circulating IL-3-, IL-5- or GM-CSF-stimulated Eo/B CFUs (P < 0.05) at 1 year. In children with cradle cap, a positive correlation was found between Eo/B CFUs and exposure to ETS-related VOCs during pregnancy or at 1 year of age (P < 0.05).
Conclusions and Clinical Relevance
This is the first demonstration that environmental exposures are positively associated with levels of circulating Eo/B progenitors. The recruitment and differentiation of Eo/B progenitors in response to environmental triggers may play a role in the development of skin manifestations during the first year of life.