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Niacin: Does It affect 8-hydroxy-2-deoxyguanosine levels of the patients having low HDL cholesterol levels?

Ece Harman, Serkan Akcay, Yankı Buke, Hakan Er.


We aimed to determine whether niacin improve plasma HDL-cholesterol levels by decreasing 8-Hydroxydeoxyguanosıne (8-OHdG) as a biomarker of oxidative DNA damage or not. Patients (n=32) with low HDL-cholesterol levels (≤ 40 mg/dl) were included in the study. Lipoprotein profiles (total cholesterol, HDL-C, and total triglycerides) were measured in all patients. LDL-C was calculated as described by Friedewald et al. Before and after 16 week of niacin therapy serum 8-OHdG was measured. There were significant difference between pre and post treatment plasma HDL-C and 8-OHdG levels. We concluded that niacin may raise HDL-C levels. The improvement of plasma HDL-C levels may have a protective effect on endothelial dysfunction. By reducing the level of 8-OHdG, niacin may decrease DNA damage. Thus, niacin therapy may be consider as an alternative to statins or fibrates in patients in whom fail to sufficiently correct low HDL-C levels.

Key words: Niacin, 8-OHdG, HDL cholesterol

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