Implication of low HDL-c levels in patients with average LDL-c levels: a focus on oxidized LDL, large HDL subpopulation, and adiponectin

Mediators Inflamm. 2013:2013:612038. doi: 10.1155/2013/612038. Epub 2013 Oct 24.

Abstract

To evaluate the impact of low levels of high density lipoprotein cholesterol (HDL-c) on patients with LDL-c average levels, focusing on oxidative, lipidic, and inflammatory profiles. Patients with cardiovascular risk factors (n = 169) and control subjects (n = 73) were divided into 2 subgroups, one of normal HDL-c and the other of low HDL-c levels. The following data was analyzed: BP, BMI, waist circumference and serum glucose Total-c, TGs, LDL-c, oxidized LDL, total HDL-c and subpopulations (small, intermediate, and large), paraoxonase-1 (PON1) activity, hsCRP, uric acid, TNF- α , adiponectin, VEGF, and iCAM1. In the control subgroup with low HDL-c levels, significantly higher values of BP and TGs and lower values of PON1 activity and adiponectin were found, versus control normal HDL-c subgroup. However, differences in patients' subgroups were clearly more pronounced. Indeed, low HDL-c subgroup presented increased HbA1c, TGs, non-HDL-c, Ox-LDL, hsCRP, VEGF, and small HDL-c and reduced adiponectin and large HDL. In addition, Ox-LDL, large-HDL-c, and adiponectin presented interesting correlations with classical and nonclassical markers, mainly in the normal HDL-c patients' subgroup. In conclusion, despite LDL-c average levels, low HDL-c concentrations seem to be associated with a poor cardiometabolic profile in a population with cardiovascular risk factors, which is better evidenced by traditional and nontraditional CV biomarkers, including Ox-LDL, large HDL-c, and adiponectin.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adiponectin / metabolism*
  • Adult
  • Aged
  • Aryldialkylphosphatase / metabolism
  • Biomarkers / metabolism
  • Blood Glucose / analysis
  • Blood Pressure
  • Body Mass Index
  • C-Reactive Protein / metabolism
  • Cardiovascular Diseases / blood
  • Cardiovascular Diseases / diagnosis
  • Case-Control Studies
  • Cholesterol, HDL / blood*
  • Female
  • Gene Expression Regulation*
  • Humans
  • Inflammation / metabolism
  • Intercellular Adhesion Molecule-1 / metabolism
  • Lipid Metabolism
  • Lipoproteins, LDL / blood*
  • Male
  • Middle Aged
  • Oxygen / metabolism
  • Risk Factors
  • Tumor Necrosis Factor-alpha / metabolism
  • Uric Acid / metabolism
  • Vascular Endothelial Growth Factor A / metabolism
  • Waist Circumference

Substances

  • Adiponectin
  • Biomarkers
  • Blood Glucose
  • Cholesterol, HDL
  • Lipoproteins, LDL
  • Tumor Necrosis Factor-alpha
  • Vascular Endothelial Growth Factor A
  • oxidized low density lipoprotein
  • Intercellular Adhesion Molecule-1
  • Uric Acid
  • C-Reactive Protein
  • Aryldialkylphosphatase
  • Oxygen