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 Citations (Scopus)

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
Externally publishedYes

Fingerprint

Trichuris
Quantitative Trait Loci
Infection
Population
Genome
Pedigree
Ovum
Odds Ratio
Chromosomes, Human, Pair 18
Chromosomes, Human, Pair 13
Chromosomes, Human, Pair 12
Nepal
Chromosomes, Human, Pair 9
Parasitic Diseases
Helminths
Genetic Predisposition to Disease
Growth and Development
Developing Countries
Soil
Public Health

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Immunology

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

Two quantitative trait loci influence whipworm (Trichuris trichiura) infection in a Nepalese population. / Williams-Blangero, Sarah; VandeBerg, John L.; Subedi, Janardan; Jha, Bharat; Dyer, Tom D.; Blangero, John.

In: Journal of Infectious Diseases, Vol. 197, No. 8, 15.04.2008, p. 1198-1203.

Research output: Contribution to journalArticle

Williams-Blangero, S, VandeBerg, JL, Subedi, J, Jha, B, Dyer, TD & Blangero, J 2008, 'Two quantitative trait loci influence whipworm (Trichuris trichiura) infection in a Nepalese population', Journal of Infectious Diseases, vol. 197, no. 8, pp. 1198-1203. https://doi.org/10.1086/533493
Williams-Blangero, Sarah ; VandeBerg, John L. ; Subedi, Janardan ; Jha, Bharat ; Dyer, Tom D. ; Blangero, John. / Two quantitative trait loci influence whipworm (Trichuris trichiura) infection in a Nepalese population. In: Journal of Infectious Diseases. 2008 ; Vol. 197, No. 8. pp. 1198-1203.
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