Genetic markers for ancestry are correlated with body composition traits in older African Americans

J. R. Shaffer, C. M. Kammerer, D. Reich, G. McDonald, N. Patterson, B. Goodpaster, D. C. Bauer, J. Li, A. B. Newman, J. A. Cauley, T. B. Harris, F. Tylavsky, R. E. Ferrell, J. M. Zmuda

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Abstract

Summary: Individual-specific percent European ancestry was assessed in 1,277 African Americans. We found significant correlations between proportion of European ancestry and several musculoskeletal traits, indicating that admixture mapping may be a useful strategy for locating genes affecting these traits. Introduction: Genotype data for admixed populations can be used to detect chromosomal regions influencing disease risk if allele frequencies at disease-related loci differ between parental populations. We assessed evidence for differentially distributed alleles affecting bone and body composition traits in African Americans. Methods: Bone mineral density (BMD) and body composition data were collected for 1,277 African and 1,790 European Americans (aged 70-79). Maximum likelihood methods were used to estimate individual-specific percent European ancestry for African Americans genotyped at 37 ancestry-informative genetic markers. Partial correlations between body composition traits and percent European ancestry were calculated while simultaneously adjusting for the effects of covariates. Results: Percent European ancestry (median = 18.7%) in African Americans was correlated with femoral neck BMD in women (r = -0.18, p < 10-5) and trabecular spine BMD in both sexes (r = -0.18, p < 10-5) independently of body size, fat, lean mass, and other covariates. Significant associations of European ancestry with appendicular lean mass (r = -0.19, p < 10 -10), total lean mass (r = -0.12, p < 10-4), and total body fat (r = 0.09, p < 0.002) were also observed for both sexes. Conclusions: These results indicate that some population differences in body composition may be due to population-specific allele frequencies, suggesting the utility of admixture mapping for identifying susceptibility genes for osteoporosis, sarcopenia, and obesity.

Original languageEnglish (US)
Pages (from-to)733-741
Number of pages9
JournalOsteoporosis International
Volume18
Issue number6
DOIs
StatePublished - Jun 1 2007

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Body Composition
Genetic Markers
African Americans
Bone Density
Gene Frequency
Population
Sarcopenia
Femur Neck
Body Size
Genes
Osteoporosis
Adipose Tissue
Spine
Obesity
Fats
Alleles
Genotype
Bone and Bones

All Science Journal Classification (ASJC) codes

  • Endocrinology, Diabetes and Metabolism

Cite this

Shaffer, J. R., Kammerer, C. M., Reich, D., McDonald, G., Patterson, N., Goodpaster, B., ... Zmuda, J. M. (2007). Genetic markers for ancestry are correlated with body composition traits in older African Americans. Osteoporosis International, 18(6), 733-741. https://doi.org/10.1007/s00198-006-0316-6

Genetic markers for ancestry are correlated with body composition traits in older African Americans. / Shaffer, J. R.; Kammerer, C. M.; Reich, D.; McDonald, G.; Patterson, N.; Goodpaster, B.; Bauer, D. C.; Li, J.; Newman, A. B.; Cauley, J. A.; Harris, T. B.; Tylavsky, F.; Ferrell, R. E.; Zmuda, J. M.

In: Osteoporosis International, Vol. 18, No. 6, 01.06.2007, p. 733-741.

Research output: Contribution to journalArticle

Shaffer, JR, Kammerer, CM, Reich, D, McDonald, G, Patterson, N, Goodpaster, B, Bauer, DC, Li, J, Newman, AB, Cauley, JA, Harris, TB, Tylavsky, F, Ferrell, RE & Zmuda, JM 2007, 'Genetic markers for ancestry are correlated with body composition traits in older African Americans', Osteoporosis International, vol. 18, no. 6, pp. 733-741. https://doi.org/10.1007/s00198-006-0316-6
Shaffer, J. R. ; Kammerer, C. M. ; Reich, D. ; McDonald, G. ; Patterson, N. ; Goodpaster, B. ; Bauer, D. C. ; Li, J. ; Newman, A. B. ; Cauley, J. A. ; Harris, T. B. ; Tylavsky, F. ; Ferrell, R. E. ; Zmuda, J. M. / Genetic markers for ancestry are correlated with body composition traits in older African Americans. In: Osteoporosis International. 2007 ; Vol. 18, No. 6. pp. 733-741.
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abstract = "Summary: Individual-specific percent European ancestry was assessed in 1,277 African Americans. We found significant correlations between proportion of European ancestry and several musculoskeletal traits, indicating that admixture mapping may be a useful strategy for locating genes affecting these traits. Introduction: Genotype data for admixed populations can be used to detect chromosomal regions influencing disease risk if allele frequencies at disease-related loci differ between parental populations. We assessed evidence for differentially distributed alleles affecting bone and body composition traits in African Americans. Methods: Bone mineral density (BMD) and body composition data were collected for 1,277 African and 1,790 European Americans (aged 70-79). Maximum likelihood methods were used to estimate individual-specific percent European ancestry for African Americans genotyped at 37 ancestry-informative genetic markers. Partial correlations between body composition traits and percent European ancestry were calculated while simultaneously adjusting for the effects of covariates. Results: Percent European ancestry (median = 18.7{\%}) in African Americans was correlated with femoral neck BMD in women (r = -0.18, p < 10-5) and trabecular spine BMD in both sexes (r = -0.18, p < 10-5) independently of body size, fat, lean mass, and other covariates. Significant associations of European ancestry with appendicular lean mass (r = -0.19, p < 10 -10), total lean mass (r = -0.12, p < 10-4), and total body fat (r = 0.09, p < 0.002) were also observed for both sexes. Conclusions: These results indicate that some population differences in body composition may be due to population-specific allele frequencies, suggesting the utility of admixture mapping for identifying susceptibility genes for osteoporosis, sarcopenia, and obesity.",
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T1 - Genetic markers for ancestry are correlated with body composition traits in older African Americans

AU - Shaffer, J. R.

AU - Kammerer, C. M.

AU - Reich, D.

AU - McDonald, G.

AU - Patterson, N.

AU - Goodpaster, B.

AU - Bauer, D. C.

AU - Li, J.

AU - Newman, A. B.

AU - Cauley, J. A.

AU - Harris, T. B.

AU - Tylavsky, F.

AU - Ferrell, R. E.

AU - Zmuda, J. M.

PY - 2007/6/1

Y1 - 2007/6/1

N2 - Summary: Individual-specific percent European ancestry was assessed in 1,277 African Americans. We found significant correlations between proportion of European ancestry and several musculoskeletal traits, indicating that admixture mapping may be a useful strategy for locating genes affecting these traits. Introduction: Genotype data for admixed populations can be used to detect chromosomal regions influencing disease risk if allele frequencies at disease-related loci differ between parental populations. We assessed evidence for differentially distributed alleles affecting bone and body composition traits in African Americans. Methods: Bone mineral density (BMD) and body composition data were collected for 1,277 African and 1,790 European Americans (aged 70-79). Maximum likelihood methods were used to estimate individual-specific percent European ancestry for African Americans genotyped at 37 ancestry-informative genetic markers. Partial correlations between body composition traits and percent European ancestry were calculated while simultaneously adjusting for the effects of covariates. Results: Percent European ancestry (median = 18.7%) in African Americans was correlated with femoral neck BMD in women (r = -0.18, p < 10-5) and trabecular spine BMD in both sexes (r = -0.18, p < 10-5) independently of body size, fat, lean mass, and other covariates. Significant associations of European ancestry with appendicular lean mass (r = -0.19, p < 10 -10), total lean mass (r = -0.12, p < 10-4), and total body fat (r = 0.09, p < 0.002) were also observed for both sexes. Conclusions: These results indicate that some population differences in body composition may be due to population-specific allele frequencies, suggesting the utility of admixture mapping for identifying susceptibility genes for osteoporosis, sarcopenia, and obesity.

AB - Summary: Individual-specific percent European ancestry was assessed in 1,277 African Americans. We found significant correlations between proportion of European ancestry and several musculoskeletal traits, indicating that admixture mapping may be a useful strategy for locating genes affecting these traits. Introduction: Genotype data for admixed populations can be used to detect chromosomal regions influencing disease risk if allele frequencies at disease-related loci differ between parental populations. We assessed evidence for differentially distributed alleles affecting bone and body composition traits in African Americans. Methods: Bone mineral density (BMD) and body composition data were collected for 1,277 African and 1,790 European Americans (aged 70-79). Maximum likelihood methods were used to estimate individual-specific percent European ancestry for African Americans genotyped at 37 ancestry-informative genetic markers. Partial correlations between body composition traits and percent European ancestry were calculated while simultaneously adjusting for the effects of covariates. Results: Percent European ancestry (median = 18.7%) in African Americans was correlated with femoral neck BMD in women (r = -0.18, p < 10-5) and trabecular spine BMD in both sexes (r = -0.18, p < 10-5) independently of body size, fat, lean mass, and other covariates. Significant associations of European ancestry with appendicular lean mass (r = -0.19, p < 10 -10), total lean mass (r = -0.12, p < 10-4), and total body fat (r = 0.09, p < 0.002) were also observed for both sexes. Conclusions: These results indicate that some population differences in body composition may be due to population-specific allele frequencies, suggesting the utility of admixture mapping for identifying susceptibility genes for osteoporosis, sarcopenia, and obesity.

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