Clinical and genetic correlates of soluble P-selectin in the community

  • D. S. Lee
  • , M. G. Larson
  • , K. L. Lunetta
  • , J. Dupuis
  • , J. Rong
  • , J. F. Keaney
  • , I. Lipinska
  • , C. T. Baldwin
  • , R. S. Vasan
  • , Emelia J. Benjamin

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

Background: P-selectin is a cell adhesion molecule that is involved in atherogenesis, and soluble concentrations of this biomarker reflect cardiovascular risk. However, the clinical correlates and genetic characterization of soluble P-selectin have not been clearly elucidated. Objective: To describe clinical and genetic correlates of circulating P-selectin in the community. Methods: In Framingham Heart Study Offspring (European descent) and Omni (ethnic/racial minority) participants, we examined the association of cardiovascular risk factors with soluble P-selectin concentrations. In Offspring participants, we evaluated heritability, linkage and association of 29 SELP single-nucleotide polymorphisms (SNPs) with adjusted P-selectin concentrations. Rasults: In multivariable analysis of 3690 participants (54% women, mean age 60±10years), higher log-transformed P-selectin concentrations were inversely associated with female sex and hormone replacement therapy, and positively associated with age, ethnic/racial minority status, cigarette smoking, waist circumference, systolic blood pressure, fasting glucose, and total/high-density lipoprotein cholesterol and triglyceride concentrations. Clinical factors explained 10.4% of the interindividual variability in P-selectin concentrations. In 571 extended pedigrees (n = 1841) with ≥2 phenotyped members per family, multivariable-adjusted heritability was 45.4±5.8%. Among the SELP SNPs examined, a non-synonymous SNP (rs6136) encoding a threonine-to-proline substitution at position 715 was highly significantly associated with decreased P-selectin concentrations (P = 5.2×10-39), explaining 9.7% of variation after adjustment for clinical factors. Conclusion: Multiple clinical factors and an SNP in the SELP gene were significantly associated with circulating P-selectin concentrations. One SNP in SELP explained significant variation in circulating P-selectin concentrations, even after accounting for known clinical correlates.

Original languageEnglish (US)
Pages (from-to)20-31
Number of pages12
JournalJournal of Thrombosis and Haemostasis
Volume6
Issue number1
DOIs
StatePublished - Jan 2008
Externally publishedYes

Keywords

  • Epidemiology
  • Genetics
  • Inflammation
  • P-selectin
  • Polymorphism single nucleotide
  • Risk factors

ASJC Scopus subject areas

  • Hematology

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