NDLI: Genome-Wide Linkage Scan for Quantitative Trait Loci Underlying Normal Variation in Heel Bone Ultrasound Measures

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Genome-Wide Linkage Scan for Quantitative Trait Loci Underlying Normal Variation in Heel Bone Ultrasound Measures

Content Provider	PubMed Central
Author	Lee, M. Choh, A. C. Williams, K. D. Schroeder, V. Dyer, T. D. Blangero, J. Cole, S. A. Chumlea, Wm C. Duren, D. L. Sherwood, R. J. Siervogel, R. M. Towne, B. Czerwinski, S. A.
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.
Starting Page	8
File Format	PDF
ISSN	17604788
e-ISSN	17604788
Journal	The journal of nutrition, health & aging
Issue Number	1
Volume Number	16
Language	English
Publisher Date	2012-01-01
Access Restriction	Open
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Nutrition and Dietetics Geriatrics and Gerontology

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