Journal of Hypertension

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Journal of Hypertension:
doi: 10.1097/HJH.0b013e32834a509a
Original papers: Oxidative stress

Effects of statin treatment on endothelial function, oxidative stress and inflammation in patients with arterial hypertension and normal cholesterol levels

Schneider, Markus P.a,b; Schmidt, Bernhard M.c; John, Stefana; Schmieder, Roland E.a

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Objective: Patients with arterial hypertension are characterized by impaired endothelial function and increased cardiovascular risk. Statins have been proposed as a potential treatment option in hypertension, even in those with normal low-density lipoprotein (LDL)-cholesterol levels. We tested whether fluvastatin reduces oxidative stress and inflammation, and improves endothelial function in patients with arterial hypertension and normal LDL-cholesterol.

Methods: In a cross-over designed, double-blind randomized trial, 26 patients with arterial hypertension and LDL-cholesterol below 160 mg/dl were treated for 2 weeks with either placebo or fluvastatin 80 mg/day. Endothelium-dependent vasodilation (EDV) was assessed as the forearm blood flow (FBF) response to intra-arterial infusion of acetylcholine (ACH, 12 and 48 μg/min), and endothelium-independent vasodilation (EIV) as the FBF response to nitroprusside (3.2 and 12.8 μg/min). Furthermore, we measured reduced to oxidized glutathione (GSH/GSSG) ratio in red blood cells, total antioxidant capacity in plasma (TAC) and high-sensitivity C-reactive protein (hs-CRP) levels.

Results: Fluvastatin lowered LDL-cholesterol from 118 ± 16 to 90 ± 25 mg/dl (P < 0.0001), but had no effect on blood pressure, high-density lipoprotein (HDL)-cholesterol or triglycerides. EDV and EIV were unaffected by fluvastatin treatment (e.g. increase of FBF 48 μg/min: 339 ± 285% during placebo versus 268 ± 194% during fluvastatin, n.s.). Finally, GSH/GSSG ratio, TAC and hs-CRP levels were similar between fluvastatin and placebo treatment.

Conclusion: Fluvastatin treatment did not improve endothelial function, oxidative stress or inflammation in patients with arterial hypertension and normal LDL-cholesterol levels. These data argue against the usefulness of statins in patients with arterial hypertension in the absence of hypercholesterolemia or other additional risk factors.

© 2011 Lippincott Williams & Wilkins, Inc.


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