Human cholesteryl ester transfer protein measured by enzyme-linked immunosorbent assay with two monoclonal antibodies against rabbit cholesteryl ester transfer protein: plasma cholesteryl ester transfer protein and lipoproteins among Japanese hypercholesterolemic patients

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Abstract
Plasma cholesteryl ester transfer protein (CETP) concentrations were measured in Japanese subjects by an ELISA with two different monoclonal antibodies that were raised against rabbit CETP and cross-reacted against human CETP. Among 63 patients who consecutively underwent coronary angiography, the plasma CETP of 37 patients with luminal stenosis ≥50% in their coronary arteries was not significantly different from that of the 26 patients with luminal stenosis <50%. No other lipoprotein-related measurement except HDL-cholesterol differentiated the two groups. Among 40 hypercholesterolemic patients, no lipoprotein-related measurement other than LDL-cholesterol was found to positive correlate with the CETP. Before and after the treatment of 23 patients with simvastatin 5 mg a day for 4 weeks, plasma CETP markedly decreased in those whose pretreatment CETP was ≥3 mg/L; no change was observed for those with lower pretreatment CETP. In the former group, negative correlation between CETP and HDL-cholesterol was demonstrated only in the posttreatment plasma.

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