Genetic correlations between lipoprotein phenotypes and indicators of sex hormone levels in Mexican Americans

Cashell E. Jaquish, Michael C. Mahaney, John Blangero, Steven M. Haffner, Michael P. Stern, Jean W. MacCluer

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Previous studies have shown that the inverse relationship between HDL cholesterol (HDL-C) and triglyceride (TG) levels, risk factors for cardiovascular disease, is due largely to the effects of shared genes. HDL-C and TG are also known to be related to endogenous sex hormone levels, however,the nature of the relationships is unclear. The objective of this study is to ascertain the extent to which these relationships are determined by shared genes. We conducted a multivariate quantitative genetic analysis of HDL-C, TG, dehydroepiandrosterone sulfate (DHEAS) and sex hormone-binding globulin (SHBG) in 635 people from 27 pedigrees participating in the San Antonio Family Heart Study. Heritabilities (h2) and genetic and environmental correlations (ρ(G) and ρ(E)) were estimated simultaneously by maximum likelihood methods. All four traits showed significant (P < 0.05) heritabilities: h2(HDL-C) = 0.38, h2(TG) = 0.54, h2(DHEAS) = 0.43 and h2(SHBG) = 0.26. Significant genetic correlations were detected between HDL and each of the other traits: ρ(G(HDL-TG)) = -0.56, ρ(G(HDL-DHEAS)) = 0.23 and ρ(G(HDL-SHBG) = -0.56. However, there were no significant genetic correlations between TG and either measure of sex hormones. Thus, at least three separate groups of genes influence HDL-C levels in Mexican Americans: one group that has pleiotropic effects on HDL and TG, one group influences both HDL-C and SHBG and a third influences both HDL-C and DHEAS.

Original languageEnglish (US)
Pages (from-to)117-125
Number of pages9
JournalAtherosclerosis
Volume122
Issue number1
DOIs
StatePublished - Apr 26 1996
Externally publishedYes

Keywords

  • Dehydroepiandrosterone sulfate
  • Genetics
  • High-density lipoprotein cholesterol
  • Sex hormone-binding globulin
  • Triglycerides

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Fingerprint

Dive into the research topics of 'Genetic correlations between lipoprotein phenotypes and indicators of sex hormone levels in Mexican Americans'. Together they form a unique fingerprint.

Cite this