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Med Arch. 2018; 72(3): 197-201

Esterification of HDL cholesterol is Decreased in Diabetes Mellitus and CAD and Enhanced Following Treatment with Statins

Babak Bagheri, Asal Alikhani, Hossein Mokhtari, Mehdi Rasouli.

Background: The main goal of using statins is to reduce the level of plasma cholesterol, meanwhile they have a wide spectrum of actions. Objectives: To identify the effect of statins on fractional cholesterol esterification (FCE) as well as the complete profile of lipids and (apo)lipoproteins. Design and methods: In an age and sex matched case-control study, 400 subjects who were referred for coronary angiography were divided into two groups according using statins. Results: Total cholesterol was decreased significantly following treatment with statins (165.6 ± 38.0 mg/dL vs. 205.3 ± 48.4, pŁ0.001). About 90% of the reduction was occurred in nonHDL and 10% in HDL fraction. Reduction of nonHDL cholesterol (125.2 ± 35.2 mg/dL vs. 162.8 ± 45.2, pŁ0.001) occurred on both unesterified (52.4 ± 21.5 mg/dL vs. 65.2 ± 25.5, pŁ0.001) and esterified cholesterol (74.7 ± 27.3 mg/dL vs. 96.6 ± 34.1, pŁ0.001). But the decrease in HDL cholesterol (40.4 ± 10.0 mg/dL vs. 42.3 ± 9.9, pŁ0.079) happened exclusively in unesterified fraction (10.9 ± 3.4 vs. 15.2 ± 5.1, pŁ0.001) and was counterbalanced with a significant increase in esterified portion (29.5 ± 8.2 mg/dL vs. 27.2 ± 9.5, pŁ0.020). The ratio of esterified- per total- cholesterol in HDL was 67.5 ± 8.1% in the control group and was decreased to 58.0 ± 14.9% (pŁ0.01) in diabetes and CAD and increased to 73.5 ± 6.9 (pŁ0.01) after using statins. Conclusions: The results suggest that the percent of esterified cholesterol in HDL fraction is decreased in diabetes and CAD patients and increased by using statins.

Key words: Cholesterol, Esterification, HDLc, Statin, Unesterified.

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