title: Green tea consumption improves endothelial function but not circulating endothelial progenitor cells in patients with chronic renal failure.
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.
authors: Cardiovascular Center of Gwangju Veterans Hospital, Gwangju, Republic of Korea.
authors: Chung Su
authors: CS
authors: Park
authors: The Division of Cardiovascular of Internal Medicine, Kyung Hee University Medical Center, Seoul, Republic of Korea. Electronic address: mylovekw@hanmail.net.
authors: Weon
authors: W
authors: Kim
authors: The Division of Cardiovascular of Internal Medicine, Kyung Hee University Medical Center, Seoul, Republic of Korea.
authors: Jong Shin
authors: JS
authors: Woo
authors: The Division of Cardiovascular of Internal Medicine, Kyung Hee University Medical Center, Seoul, Republic of Korea.
authors: Sang Jin
authors: SJ
authors: Ha
authors: Cardiovascular Center of Gwangju Veterans Hospital, Gwangju, Republic of Korea.
authors: Won Yu
authors: WY
authors: Kang
authors: Cardiovascular Center of Gwangju Veterans Hospital, Gwangju, Republic of Korea.
authors: Sun Ho
authors: SH
authors: Hwang
authors: Department of Rheumatology, Chonnam National University, Republic of Korea.
authors: Yong Wook
authors: YW
authors: Park
authors: Heart Center, Chonnam National University, Republic of Korea.
authors: Yong Sook
authors: YS
authors: Kim
authors: Heart Center, Chonnam National University, Republic of Korea.
authors: Young Keun
authors: YK
authors: Ahn
authors: Heart Center, Chonnam National University, Republic of Korea.
authors: Myung Ho
authors: MH
authors: Jeong
authors: Cardiovascular Center of Gwangju Veterans Hospital, Gwangju, Republic of Korea.
authors: Wan
authors: W
authors: Kim
mesh_terms: D004730:Endothelium, Vascular / Q000473:pathology / Q000502:physiology*; D005500:Follow-Up Studies; D006801:Humans; D007676:Kidney Failure, Chronic / Q000097:blood* / Q000178:diet therapy* / Q000473:pathology; D018384:Oxidative Stress / Q000502:physiology; D013234:Stem Cells / Q000473:pathology / Q000502:physiology*; D013662:Tea
chemical_list: D013662:Tea