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Epigallocatechin-3-gallate Regulates NADPH Oxidase Expression in Human Umbilical Vein Endothelial Cells

The Korean journal of physiology & pharmacology, 2010-01, Vol.14 (5), p.325-329 [Peer Reviewed Journal]

COPYRIGHT(C) KYOBO BOOK CENTRE ALL RIGHTS RESERVED ;ISSN: 1226-4512 ;EISSN: 2093-3827

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  • Title:
    Epigallocatechin-3-gallate Regulates NADPH Oxidase Expression in Human Umbilical Vein Endothelial Cells
  • Author: Ahn, Hee-Yul ; Kim, Chan-Hyung ; Ha, Tae-Sun
  • Is Part Of: The Korean journal of physiology & pharmacology, 2010-01, Vol.14 (5), p.325-329
  • Description: Vascular NADPH oxidase plays a pivotal role in producing superoxide in endothelial cells and thus acts in the initiation and development of inflammatory cardiovascular diseases such as atherosclerosis. Epigallocatechin-3-gallate (EGCG), the major catechin derived from green tea, has multiple beneficial effects for treating cardiovascular disease but the effect of EGCG on the expression of vascular NADPH oxidase remains unknown. In this study, we investigated the mechanism(s) by which EGCG might inhibit the expression of subunits of NADPH oxidase, namely $p47^{phox}$, $p67^{phox}$ and $p22^{phox}$, induced by angiotensin II (Ang II) in human umbilical vein endothelial cells. Ang II increased the expression levels of $p47^{phox}$, $p67^{phox}$, and $p22^{phox}$, but EGCG counteracted this effect on $p47^{phox}$. Moreover, EGCG did not affect the production of reactive oxygen species induced by Ang II. These data suggest a novel mechanism whereby EGCG might provide direct vascular benefits for treating inflammatory cardiovascular diseases.
  • Publisher: 대한생리학회-대한약리학회
  • Language: Korean
  • Identifier: ISSN: 1226-4512
    EISSN: 2093-3827
  • Source: KoreaMed Synapse
    Geneva Foundation Free Medical Journals at publisher websites
    PubMed Central
    KoreaMed Open Access

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