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Diab Vasc Dis Res. 2010 Oct;7(4):296-9. doi: 10.1177/1479164110376206. Epub 2010 Jul 28.

Niacin improves small artery vasodilatory function and compliance in statin-treated type 2 diabetic patients.

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1
School of Medicine and Pharmacology, University of Western Australia, Perth, Australia.

Abstract

We investigated the effect of niacin (nicotinic acid prolonged release) on forearm vasodilatory function and arterial compliance in statin-treated type 2 diabetic patients with endothelial dysfunction. In a parallel group study, we randomised 15 subjects, with LDL-cholesterol ≤2.5 mmol/L, to niacin (dose titrated to 1500 mg/day over 8 weeks, then maintained for a further 12 weeks) or no additional treatment. Niacin increased maximal post-ischaemic forearm blood flow (mean ± SEM 6.4±2.4 vs. -2.3±1.2 ml/100 ml/min, p = 0.001) and small artery compliance (1.3±0.8 vs. -2.3±1.1 ml/mmHg, p = 0.01) compared with no additional treatment, but did not alter large artery compliance, blood pressure nor heart rate. Niacin decreased serum triglycerides by 47% (p = 0.04), with no change in LDL-cholesterol, HDL-cholesterol, apolipoprotein (Apo) B-100 nor ApoA-I (p > 0.05). Adding niacin to statin therapy improves small artery vasodilatory function and compliance in type 2 diabetes. This may relate to a decrease in serum triglycerides and/or a direct benefit of niacin on vascular biology.

PMID:
20667937
DOI:
10.1177/1479164110376206
[Indexed for MEDLINE]
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