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Nonlinear relationship of mite allergen exposure to mite sensitization and asthma in a birth cohort.
J Allergy Clin Immunol 2008; 122(1):114-8, 118.e1-5JA

Abstract

BACKGROUND

There is uncertainty about the nature of the relationship between mite allergen exposure during infancy and the expression of allergic diseases in childhood.

OBJECTIVE

We sought to explore the relationships between repeated measurements of mite allergen exposure during the first 5 years of life and clinical allergic disease outcomes at age 5 years.

METHODS

In a birth cohort of 516 at-risk children, 13 bed dust samples were collected between birth and 5 years of age and analyzed for mite allergen. At age 5 years, the presence of mite atopy was assessed based on skin prick test results, and clinical assessments for asthma, eczema, and wheeze were conducted. The association of allergen exposure with each clinical outcome was examined by means of logistic regression, with adjustments for potential confounders.

RESULTS

The lowest and highest mite exposure quintiles, expressed as mean allergen concentration averaged over 0 to 5 years, were associated with a lower prevalence of mite atopy and of asthma compared with intermediate levels of exposure. These relationships, when determined by using average allergen concentration over 0 to 18 months, were weaker.

CONCLUSIONS

This study demonstrates a nonlinear relationship between mite allergen exposure and clinical outcomes in this generally high mite allergen environment.

Authors+Show Affiliations

Woolcock Institute of Medical Research, Sydney, Australia. ert@med.usyd.edu.auNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18602569

Citation

Tovey, Euan R., et al. "Nonlinear Relationship of Mite Allergen Exposure to Mite Sensitization and Asthma in a Birth Cohort." The Journal of Allergy and Clinical Immunology, vol. 122, no. 1, 2008, pp. 114-8, 118.e1-5.
Tovey ER, Almqvist C, Li Q, et al. Nonlinear relationship of mite allergen exposure to mite sensitization and asthma in a birth cohort. J Allergy Clin Immunol. 2008;122(1):114-8, 118.e1-5.
Tovey, E. R., Almqvist, C., Li, Q., Crisafulli, D., & Marks, G. B. (2008). Nonlinear relationship of mite allergen exposure to mite sensitization and asthma in a birth cohort. The Journal of Allergy and Clinical Immunology, 122(1), pp. 114-8, 118.e1-5. doi:10.1016/j.jaci.2008.05.010.
Tovey ER, et al. Nonlinear Relationship of Mite Allergen Exposure to Mite Sensitization and Asthma in a Birth Cohort. J Allergy Clin Immunol. 2008;122(1):114-8, 118.e1-5. PubMed PMID: 18602569.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Nonlinear relationship of mite allergen exposure to mite sensitization and asthma in a birth cohort. AU - Tovey,Euan R, AU - Almqvist,Catarina, AU - Li,Qiang, AU - Crisafulli,Daniele, AU - Marks,Guy B, PY - 2007/10/18/received PY - 2008/05/09/revised PY - 2008/05/12/accepted PY - 2008/7/8/pubmed PY - 2008/7/30/medline PY - 2008/7/8/entrez SP - 114-8, 118.e1-5 JF - The Journal of allergy and clinical immunology JO - J. Allergy Clin. Immunol. VL - 122 IS - 1 N2 - BACKGROUND: There is uncertainty about the nature of the relationship between mite allergen exposure during infancy and the expression of allergic diseases in childhood. OBJECTIVE: We sought to explore the relationships between repeated measurements of mite allergen exposure during the first 5 years of life and clinical allergic disease outcomes at age 5 years. METHODS: In a birth cohort of 516 at-risk children, 13 bed dust samples were collected between birth and 5 years of age and analyzed for mite allergen. At age 5 years, the presence of mite atopy was assessed based on skin prick test results, and clinical assessments for asthma, eczema, and wheeze were conducted. The association of allergen exposure with each clinical outcome was examined by means of logistic regression, with adjustments for potential confounders. RESULTS: The lowest and highest mite exposure quintiles, expressed as mean allergen concentration averaged over 0 to 5 years, were associated with a lower prevalence of mite atopy and of asthma compared with intermediate levels of exposure. These relationships, when determined by using average allergen concentration over 0 to 18 months, were weaker. CONCLUSIONS: This study demonstrates a nonlinear relationship between mite allergen exposure and clinical outcomes in this generally high mite allergen environment. SN - 1097-6825 UR - https://www.unboundmedicine.com/medline/citation/18602569/Nonlinear_relationship_of_mite_allergen_exposure_to_mite_sensitization_and_asthma_in_a_birth_cohort_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0091-6749(08)00946-9 DB - PRIME DP - Unbound Medicine ER -