Abstract
Aim Plasma asymmetric dimethylarginine (ADMA) is a novel risk factor for atherosclerosis and has been observed to associate with endothelial function in cross-section studies. In the present study our aim was to investigate whether plasma ADMA levels are predictive of brachial artery endothelial function in a prospective setting. Methods and results Using ultrasound we measured brachial artery flow-mediated dilation (FMD) both in 2001 and 2007 in 1808 healthy subjects aged 24–39 years at baseline. Plasma methylarginines were determined by isocratic high-pressure liquid chromatography in 2001. In a multivariable model adjusted with brachial diameter and conventional cardiovascular risk factors, baseline ADMA levels had a significant inverse association with FMD measured 6 years later ( β ± SE: −1.89 ± 0.69%, P = 0.006). Conclusions We conclude that plasma ADMA can predict brachial artery FMD in subjects without prevalent atherosclerotic disease. These data suggest that plasma ADMA may have a determinative role in predicting endothelial function.
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