Abstract
To evaluate the correlation between endothelial dysfunction and multiple target organ damage (TOD), we measured endothelial function using high-resolution ultrasonography in hypertensive patients with or without TOD. Two hundred and eighty patients with hypertension were divided into four groups as follows: no TOD (Group I, n=61); 1 TOD (Group II, n=113); 2 TOD (Group III, n=59); and ⩾3 TOD (Group IV, n=47). Endothelial function was assessed by endothelium-dependent flow-mediated dilatation (FMD) and -independent vasodilation (after sublingual administration of nitroglycerin) of the brachial artery using high-resolution vascular ultrasound. We also assessed the intima–media thickness (IMT) of the common carotid, carotid to femoral pulse wave velocity (cf-PWV) and left ventricular mass index (LVMI). FMD was inversely associated with the number of affected organs. FMD was lower in the patient groups with ⩾3 TOD (Group IV: 6.85±4.70% vs Group II: 10.00±6.15%, P<0.01), 2 TOD (Group III: 7.37±5.02% vs Group II, P<0.01) and 1 TOD as compared with patients with no TOD (Group I: 11.88±7.11% vs Group II, P<0.05). In univariate correlation analysis, there was a significant relationship between FMD and IMT, serum creatinine, LVMI and cf-PWV. In stepwise multivariate regression analysis, FMD still correlated with waist size (β=−0.283, P<0.01), age (β=−0.231, P<0.05) and IMT (β=−0.197, P=0.05). These findings suggested that reduced FMD was associated with the number of TOD and may be considered an indicator for evaluating TOD.
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Acknowledgements
This study was supported by National Natural Science Foundation of China (30670832 and 30870941), National Key Project for Basic Research (2004CB518603, 2006CB503804 and 2009CB521905), National High-tech R&D Program (2006AA02Z179) and a grant from the Shanghai Science and Technology Committee (08JC1417400, 08DZ2200400, 08410702400).
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Xu, JZ., Zhang, Y., Wu, SN. et al. Impaired endothelial function in hypertensive patients with target organ damage. J Hum Hypertens 23, 751–757 (2009). https://doi.org/10.1038/jhh.2009.10
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DOI: https://doi.org/10.1038/jhh.2009.10
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