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Updated: Jun 18, 2026

Assessment of Vascular Function in Patients With Chronic Kidney Disease
Published on: June 16, 2014
Green tea consumption improves endothelial function but not circulating endothelial progenitor cells in patients with
Chung Su Park1, Weon Kim2, Jong Shin Woo2
1Cardiovascular Center of Gwangju Veterans Hospital, Gwangju, Republic of Korea.
Abstract:
This study was designed to determine the effect of green tea consumption in patients with chronic kidney disease (CKD) on flow-mediated endothelium-dependent vasodilation (FMD) and the number of circulating endothelial progenitor cells (EPCs). Forty patients with CKD requiring chronic dialysis were enrolled. The patients were divided into two groups: the catechin group that consumed green tea (5 g/day for 1 month) and the control group that consumed water. The number of EPCs, inflammatory markers, oxidative stress, and FMD were determined at baseline and 4 weeks after green tea consumption. Clinical characteristics, oxidative stress, inflammatory markers, and circulating EPCs number were not significantly different. FMD was significantly improved after 4 weeks in the catechin group (from 5.68±2.67% to 8.66±3.46%, p=0.002). Short-term green tea consumption induced a rapid improvement in FMD, but did not improve circulating EPC levels in patients with CKD.
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