The effects of type 2 diabetes on lipoprotein composition and arterial stiffness in male youth

Scott M. Gordon, W. Sean Davidson, Elaine M. Urbina, Lawrence M. Dolan, Anna Heink, Huaiyu Zang, L. Jason Lu, Amy S. Shah

Research output: Contribution to journalArticlepeer-review

61 Scopus citations

Abstract

Recent studies suggest HDL exists as numerous subpopulations with distinct protein/lipid compositions that are not reflected in the HDL cholesterol (HDL-C) number. In this study, we sought to evaluate HDL subpopulations in adolescents with type 2 diabetes (T2D) to determine if changes in HDL composition are associated with early vascular disease. T2D (n = 10), lean (n = 9), and obese (n = 11) youth were recruited. Plasma was fractionated using gelfiltration chromatography, and lipid-Associated proteins were identified using mass spectrometry. Concurrently, vascular stiffness was assessed using pulse wave velocity (PWV). We found youth with T2D exhibited decreased phospholipid content in fractions containing large HDL particles that was inversely associated with PWV (P < 0.001). No association was noted between HDL-C and PWV. Proteomic analysis revealed changes in 7 of 45 identified proteins in the T2D group, including apolipoprotein (apo) A-2, apoE, and paraoxonase-1 (P < 0.05). Our data demonstrate early changes in the lipid and protein compositions of specific HDL subspecies in adolescents with T2D that are related to early markers of arterial disease. These findings suggest that analyzing the composition of HDL, rather than HDL-C, may be useful in assessing cardiovascular risk in this population.

Original languageEnglish
Pages (from-to)2958-2967
Number of pages10
JournalDiabetes
Volume62
Issue number8
DOIs
StatePublished - Aug 2013

ASJC Scopus subject areas

  • Internal Medicine
  • Endocrinology, Diabetes and Metabolism

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