The journal of nutrition, health & aging

, Volume 16, Issue 1, pp 8–13

Genome-wide linkage scan for quantitative trait loci underlying normal variation in heel bone ultrasound measures

Authors

    • Lifespan Health Research CenterWright State University Boonshoft School of Medicine
    • Lifespan Health Research Center, Voice: 1-937-775-1448, Department of Community HealthWright State University, Boonshoft School of Medicine
  • A. C. Choh
    • Lifespan Health Research CenterWright State University Boonshoft School of Medicine
  • K. D. Williams
    • Department of AnthropologyTemple University
  • V. Schroeder
    • Lifespan Health Research CenterWright State University Boonshoft School of Medicine
  • T. D. Dyer
    • Department of GeneticsSouthwest Foundation for Biomedical Research
  • J. Blangero
    • Department of GeneticsSouthwest Foundation for Biomedical Research
  • S. A. Cole
    • Department of GeneticsSouthwest Foundation for Biomedical Research
  • W. M. C. Chumlea
    • Lifespan Health Research CenterWright State University Boonshoft School of Medicine
  • D. L. Duren
    • Lifespan Health Research CenterWright State University Boonshoft School of Medicine
  • R. J. Sherwood
    • Lifespan Health Research CenterWright State University Boonshoft School of Medicine
  • R. M. Siervogel
    • Lifespan Health Research CenterWright State University Boonshoft School of Medicine
  • B. Towne
    • Lifespan Health Research CenterWright State University Boonshoft School of Medicine
  • S. A. Czerwinski
    • Lifespan Health Research CenterWright State University Boonshoft School of Medicine
Genome-Wide Linkage Scan for Quantitative Trait Loci Underlying Normal Variation

DOI: 10.1007/s12603-011-0080-y

Cite this article as:
Lee, M., Choh, A.C., Williams, K.D. et al. J Nutr Health Aging (2012) 16: 8. doi:10.1007/s12603-011-0080-y

Abstract

Quantitative ultrasound (QUS) traits are correlated with bone mineral density (BMD), but predict risk for future fracture independent of BMD. Only a few studies, however, have sought to identify specific genes influencing calcaneal QUS measures. The aim of this study was to conduct a genome-wide linkage scan to identify quantitative trait loci (QTL) influencing normal variation in QUS traits. QUS measures were collected from a total of 719 individuals (336 males and 383 females) from the Fels Longitudinal Study who have been genotyped and have at least one set of QUS measurements. Participants ranged in age from 18.0 to 96.6 years and were distributed across 110 nuclear and extended families. Using the Sahara ® bone sonometer, broadband ultrasound attenuation (BUA), speed of sound (SOS) and stiffness index (QUI) were collected from the right heel. Variance components based linkage analysis was performed on the three traits using 400 polymorphic short tandem repeat (STR) markers spaced approximately 10 cM apart across the autosomes to identify QTL influencing the QUS traits. Age, sex, and other significant covariates were simultaneously adjusted. Heritability estimates (h2) for the QUS traits ranged from 0.42 to 0.57. Significant evidence for a QTL influencing BUA was found on chromosome 11p15 near marker D11S902 (LOD = 3.11). Our results provide additional evidence for a QTL on chromosome 11p that harbors a potential candidate gene(s) related to BUA and bone metabolism.

Key words

Genetic linkagequantitative ultrasoundcalcaneusfamily studiesbone

Copyright information

© Serdi and Springer Verlag France 2012