Correlation between high density lipoprotein and monocyte subpopulations among stable coronary atherosclerotic heart disease patients.

High density lipoprotein (HDL) is a structurally and functionally heterogeneous molecular particle whose function is unclear in atherosclerosis at present. Studies show that small HDL functional imbalance may exist in Coronary Atherosclerotic Heart Disease (CAD) patients. Monocyte is considered to play an important role in atherosclerosis, in accordance with the expression of superficial CD14 and CD16, it can be divided into three subpopulations. The purpose of this study was to explore the relation between HDL and monocyte subpopulations among CAD patients. We report 90 cases of stable CAD patients and define the monocyte subpopulations as classical monocyte (CD14++CD16-; CM), intermediate monocyte (CD14+CD16+; IM), and non-classical monocyte (CD14+CD16++; NCM); HDL group is measured by polyacrylamide gel electrophoresis. The results indicated that the small HDL in blood serum has a correlation with proinflammatory NCM in circulation but a negative correction with CM and no relationship with diabetes, saccharify hemoglobin, hypertension, smoking history and taking dose of statins drugs and severity of disease. In conclusion, this study primarily confirms that micromolecule HDL level correlates with the increase of non-classical monocyte subpopulations and decrease of classical monocyte quantity. Thus demonstrates the proinflammatory correlation between micromolecule HDL and internal immunity in the development of stable atherosclerosis.