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Evidence of link between acetaminophen use in pregnancy and childhood asthma, researchers say

Date:
November 11, 2010
Source:
Queen Mary, University of London
Summary:
Evidence suggesting that the risk of childhood asthma associated with prenatal acetaminophen exposure may depend on antioxidant genes in the mother has been found by a team of UK scientists. The results of their study strengthen the argument for a causal link between acetaminophen exposure in early life and later childhood asthma.

Evidence suggesting that the risk of childhood asthma associated with prenatal exposure to acetaminophen (also known as paracetamol) may depend on antioxidant genes in the mother has been found by a team of UK scientists.

The results of their study, which strengthens the argument for a causal link between acetaminophen exposure in early life and later childhood asthma, are published online Nov. 10 in the Journal of Allergy and Clinical Immunology.

Led by Seif Shaheen, Professor of Respiratory Epidemiology at Barts and The London School of Medicine and Dentistry, the team examined data from the British Avon Longitudinal Study of Parents and Children (ALSPAC) which has followed 14,000 children since birth -- beginning with their mothers' pregnancies and continuing into the children's 8th year. Researchers looked for evidence of interaction between acetaminophen use during pregnancy or infancy and antioxidant genes in the mother or child. Variants in such genes may influence the toxicity of acetaminophen.

Participating mothers reported on their use of acetaminophen during pregnancy, as well as their child's exposure to the drug during infancy. Histories of wheezing and any asthma and allergy symptoms and diagnoses in the children were recorded, along with details of environmental exposures and family lifestyles. Between ages 7 and 8 the children had allergy skin and blood tests and lung function tests. Both mothers and children had genetic testing performed.

Professor Shaheen and researchers found evidence suggesting that the risk of childhood asthma associated with prenatal acetaminophen exposure depended on which variants of various antioxidant genes were present in the mother. In contrast, interactions between infant acetaminophen use and similar gene variants in the child were not seen. Shaheen added; "Our latest findings add further weight to the evidence implicating prenatal acetaminophen exposure in the development of childhood asthma. However, ultimately a cause and effect relationship can only be confirmed through randomised clinical trials."


Story Source:

The above story is based on materials provided by Queen Mary, University of London. Note: Materials may be edited for content and length.


Journal Reference:

  1. Seif O. Shaheen, Roger B. Newson, Susan M. Ring, Matthew J. Rose-Zerilli, John W. Holloway, A. John Henderson. Prenatal and infant acetaminophen exposure, antioxidant gene polymorphisms, and childhood asthma. Journal of Allergy and Clinical Immunology, 2010; DOI: 10.1016/j.jaci.2010.08.047

Cite This Page:

Queen Mary, University of London. "Evidence of link between acetaminophen use in pregnancy and childhood asthma, researchers say." ScienceDaily. ScienceDaily, 11 November 2010. <www.sciencedaily.com/releases/2010/11/101110101317.htm>.
Queen Mary, University of London. (2010, November 11). Evidence of link between acetaminophen use in pregnancy and childhood asthma, researchers say. ScienceDaily. Retrieved July 25, 2014 from www.sciencedaily.com/releases/2010/11/101110101317.htm
Queen Mary, University of London. "Evidence of link between acetaminophen use in pregnancy and childhood asthma, researchers say." ScienceDaily. www.sciencedaily.com/releases/2010/11/101110101317.htm (accessed July 25, 2014).

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