Xiao-Dong Jing1, Xiao-Ming Wei1, Song-Bai Deng1, Jian-Lin Du1, Ya-Jie Liu1, Qiang She2. 1. Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China. 2. Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China. Electronic address: qshe98@hotmail.com.
Abstract
BACKGROUND: High-density lipoprotein (HDL)-associated sphingosine-1-phosphate (S1P) contributed to several beneficial effects in the cardiovascular system. We explored the relationship between the HDL-S1P concentrations and coronary in-stent restenosis (ISR). METHODS: Fifty consecutive patients with ISR and 50 normal control subjects were included. The serum S1P, HDL-S1P and clinical data were collected to explore the relationships between these parameters and ISR. RESULTS: The patients with ISR had significantly lower concentrations of serum S1P (96.10 ± 26.33 vs. 113.40 ± 32.72; P = 0.004) and HDL-S1P (32.81 ± 10.02 vs. 42.72 ± 11.75; P < 0.001). All included patients were divided into four quartiles based on their concentrations of HDL-S1P: Quartile 1 (18.63-28.51 ng/ml), Quartile 2 (28.62-37.28 ng/ml), Quartile 3 (37.35-45.27 ng/ml), and Quartile 4 (45.59-79.36 ng/ml). The rates of ISR were 84%, 48%, 40% and 28%, respectively. The patients in Quartile 1 exhibited significantly higher rates of ISR compared with the other groups (P = 0.001). A multivariate stepwise logistic regression analysis indicated that HDL-S1P (OR = 0.846, 95% CI = 0.767-0.932, P = 0.001) was an independent predictor of ISR. An ROC analysis indicated that HDL-S1P = 30.37 ng/ml and had a 90% sensitivity and a 52% specificity in predicting ISR. CONCLUSIONS: HDL-S1P is an independent predictor of ISR, and patients with higher concentrations of HDL-S1P have a low risk of ISR.
BACKGROUND: High-density lipoprotein (HDL)-associated sphingosine-1-phosphate (S1P) contributed to several beneficial effects in the cardiovascular system. We explored the relationship between the HDL-S1P concentrations and coronary in-stent restenosis (ISR). METHODS: Fifty consecutive patients with ISR and 50 normal control subjects were included. The serum S1P, HDL-S1P and clinical data were collected to explore the relationships between these parameters and ISR. RESULTS: The patients with ISR had significantly lower concentrations of serum S1P (96.10 ± 26.33 vs. 113.40 ± 32.72; P = 0.004) and HDL-S1P (32.81 ± 10.02 vs. 42.72 ± 11.75; P < 0.001). All included patients were divided into four quartiles based on their concentrations of HDL-S1P: Quartile 1 (18.63-28.51 ng/ml), Quartile 2 (28.62-37.28 ng/ml), Quartile 3 (37.35-45.27 ng/ml), and Quartile 4 (45.59-79.36 ng/ml). The rates of ISR were 84%, 48%, 40% and 28%, respectively. The patients in Quartile 1 exhibited significantly higher rates of ISR compared with the other groups (P = 0.001). A multivariate stepwise logistic regression analysis indicated that HDL-S1P (OR = 0.846, 95% CI = 0.767-0.932, P = 0.001) was an independent predictor of ISR. An ROC analysis indicated that HDL-S1P = 30.37 ng/ml and had a 90% sensitivity and a 52% specificity in predicting ISR. CONCLUSIONS: HDL-S1P is an independent predictor of ISR, and patients with higher concentrations of HDL-S1P have a low risk of ISR.
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