Ontology highlight
ABSTRACT: Objective
An elevated insulin resistance index (homeostasis model assessment of insulin resistance [HOMA-IR]) is more commonly seen in the Mexican American population than in European populations. We report quantitative ancestral effects within a Mexican American population, and we correlate ancestral components with HOMA-IR.Research design and methods
We performed ancestral analysis in 1,551 participants of the Cameron County Hispanic Cohort by genotyping 103 ancestry-informative markers (AIMs). These AIMs allow determination of the percentage (0-100%) ancestry from three major continental populations, i.e., European, African, and Amerindian.Results
We observed that predominantly Amerindian ancestral components were associated with increased HOMA-IR (? = 0.124, P = 1.64 × 10(-7)). The correlation was more significant in males (Amerindian ? = 0.165, P = 5.08 × 10(-7)) than in females (Amerindian ? = 0.079, P = 0.019).Conclusions
This unique study design demonstrates how genomic markers for quantitative ancestral information can be used in admixed populations to predict phenotypic traits such as insulin resistance.
SUBMITTER: Qu HQ
PROVIDER: S-EPMC3507582 | biostudies-literature | 2012 Dec
REPOSITORIES: biostudies-literature
Qu Hui-Qi HQ Li Quan Q Lu Yang Y Hanis Craig L CL Fisher-Hoch Susan P SP McCormick Joseph B JB
Diabetes care 20120813 12
<h4>Objective</h4>An elevated insulin resistance index (homeostasis model assessment of insulin resistance [HOMA-IR]) is more commonly seen in the Mexican American population than in European populations. We report quantitative ancestral effects within a Mexican American population, and we correlate ancestral components with HOMA-IR.<h4>Research design and methods</h4>We performed ancestral analysis in 1,551 participants of the Cameron County Hispanic Cohort by genotyping 103 ancestry-informativ ...[more]