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The ATIC study is a randomised, double- blind, placebo-controlled trial in which the effects of oxidative stress-lowering treatment on vascular function and structure are studied in patients with chronic non-diabetic renal failure who are free from manifest arterial occlusive disease. Participants in the trial were randomised to active treatment consisting of add-on therapy with pravastatin, vitamin E and homocysteine-lowering therapy, or to placebo. Subjects not using angiotensin converting enzyme inhibitors (ACE-inhibitors) or angiotensin receptor blockers (ARBs) at inclusion were put on ACE-inhibitors for at least two weeks before the baseline measurement and randomisation. Those who were on ARBs continued their ARBs. We excluded individuals with diabetes mellitus (ADA criteria), active vasculitis, nephrotic syndrome (>3gr/24hr urine protein), renal transplantation, fasting total cholesterol > 7 mmol/L, cholesterol-lowering therapy within three months prior to inclusion or known ischemic cardiac, cerebrovascular or peripheral arterial disease. Ninety-three patients (out of 118 eligible patients) took part in the study and written informed consent was obtained from all participants.
Background: Patients with mild-to-moderate renal failure have an increased risk of cardiovascular disease (CVD), which is not fully explained by the presence of classical cardiovascular risk factors. Oxidative stress has been proposed to play a major role in the development of CVD among renal failure patients. We investigated, in patients with mild-to-moderate chronic kidney disease (CKD), the effect of an oxidative-stress-lowering therapy with pravastatin, vitamin E and homocysteine-lowering on carotid intima-media thickness and endothelial function (two strong surrogate markers of cardiovascular risk), and renal function.
Methods: 93 patients with CKD (Cockcroft-Gault equation; mean: 41±17 ml / min per 1.73 m2) who were free of manifest arterial occlusive disease and diabetes mellitus were included in the Anti-oxidant Therapy In Chronic renal insufficiency (ATIC) study, a randomized, double-blind, placebo-controlled trial. The active treatment group received pravastatin 40 mg/day to which after 6 months vitamin E 300 mg/day was added and after another 6 months homocysteine-lowering therapy (folic acid 5 mg/day, pyridoxine 100 mg, vitamin B-12 1 mg/day). The placebo group received matching placebos at onset, and 6 and 12 months later. Blood pressure in both groups was managed according to a standard protocol to achieve a blood pressure of < 140/90 mmHg. Patients were followed up for two years. Measurements of common carotid artery intima-media thickness (CCA-IMT) and brachial artery endothelium-dependent, flow-mediated dilatation (BA-FMD) were performed at randomisation and after 6, 12 and 18 months. Plasma oxidized LDL (oxLDL) and plasma malondialdehyde (MDA) were measured as markers of oxidative stress at randomisation and after 6, 12, 18 and 24 months. We used generalized estimating equations (GEE) for data analysis.
Allocation: Randomized, Control: Placebo Control, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double-Blind, Primary Purpose: Treatment
Chronic Kidney Disease
pravastatin, vitamin E
VU University Medical Center
VU University Medical Center
Published on BioPortfolio: 2014-08-27T03:42:13-0400
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