Two quantitative trait loci influence whipworm (Trichuris trichiura) infection in a Nepalese population

Sarah Williams-Blangero, John L. VandeBerg, Janardan Subedi, Bharat Jha, Tom D. Dyer, John Blangero

    Research output: Contribution to journalArticle

    24 Scopus citations

    Abstract

    Background. Whipworm (Trichuris trichiura) infection is a soil-transmitted helminth infection that affects >1 billion people. It is a serious public health problem in many developing countries and can result in deficits in growth and cognitive development. In a follow-up study of significant heritability for whipworm infection, we conducted the first genome scan for quantitative trait loci (QTL) influencing the heritability of susceptibility to this important parasitic disease. Methods. Whipworm egg counts were determined for 1253 members of the Jirel population of eastern Nepal. All individuals in the study sample belonged to a single pedigree including >26,000 pairs of relatives that are informative for genetic analysis. Results. Linkage analysis of genome scan data generated for the pedigree provided unambiguous evidence for 2 QTL influencing susceptibility to whipworm infection, one located on chromosome 9 (logarithm of the odds ratio [LOD] score, 3.35; genomewide P = .0138) and the other located on chromosome 18 (LOD score, 3.29; genomewide P = .0159). There was also suggestive evidence that 2 loci located on chromosomes 12 and 13 influenced whipworm infection. Conclusion. The results of this first genome scan for T. trichiura egg counts provides new information on the determinants of genetic predisposition to whipworm infection.

    Original languageEnglish (US)
    Pages (from-to)1198-1203
    Number of pages6
    JournalJournal of Infectious Diseases
    Volume197
    Issue number8
    DOIs
    StatePublished - Apr 15 2008

      Fingerprint

    ASJC Scopus subject areas

    • Immunology and Allergy
    • Infectious Diseases

    Cite this

    Williams-Blangero, S., VandeBerg, J. L., Subedi, J., Jha, B., Dyer, T. D., & Blangero, J. (2008). Two quantitative trait loci influence whipworm (Trichuris trichiura) infection in a Nepalese population. Journal of Infectious Diseases, 197(8), 1198-1203. https://doi.org/10.1086/533493