ArticleThe Journal of nutritional biochemistry2012
Epigallocatechin gallate induces expression of heme oxygenase-1 in endothelial cells via p38 MAPK and Nrf-2 that suppresses proinflammatory actions of TNF-α.
Article in The Journal of nutritional biochemistry, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.
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Who cites it
45 citing papers in PubMed, 104 citations in OpenAlex.
- Low Brain Levels of Dietary Polyphenols and Their Conjugates: Reassessing Mechanisms of Alzheimer's Disease Prevention.Journal of dementia and alzheimer's disease · 2026Article
- Interactions Between Nutraceuticals and α-Synuclein Conformational States: Molecular Mechanisms and Neuroprotective Implications in Parkinson's Disease.International journal of molecular sciences · 2026Review
- Vascular endothelial protective effects of longan (Frontiers in pharmacology · 2026Review
- Cardioprotective and Anti-Hypertensive Effects of Epigallocatechin Gallate: Novel Insights Into Biological Evidence.Journal of clinical hypertension (Greenwich, Conn.) · 2025Review
- Research Progress on Flavonoids in Traditional Chinese Medicine to Counteract Cardiotoxicity Associated with Anti-Tumor Drugs.Reviews in cardiovascular medicine · 2024Review
- Foodomics-Based Approaches Shed Light on the Potential Protective Effects of Polyphenols in Inflammatory Bowel Disease.International journal of molecular sciences · 2023Review
- Green tea polyphenol EGCg induces cell fusionBiochemistry and biophysics reports · 2023Article
- Effect of Purple Sweet Potato Using Different Cooking Methods on Cytoprotection against Ethanol-Induced Oxidative Damage through Nrf2 Activation in HepG2 Cells.Antioxidants (Basel, Switzerland) · 2023Article
- Green Tea Catechins as Therapeutic Antioxidants for Glaucoma Treatment.Antioxidants (Basel, Switzerland) · 2023Review
- Dietary (poly)phenols mitigate inflammatory bowel disease: Therapeutic targets, mechanisms of action, and clinical observations.Current research in food science · 2023Review
- Therapeutic Effects of Green Tea Polyphenol (‒)-Epigallocatechin-3-Gallate (EGCG) in Relation to Molecular Pathways Controlling Inflammation, Oxidative Stress, and Apoptosis.International journal of molecular sciences · 2022Review
- Biological Effects of EGCG@MOF Zn(BTC)Molecules (Basel, Switzerland) · 2022Article
- Green Tea Polyphenol (-)-Epigallocatechin-3-Gallate (EGCG): A Time for a New Player in the Treatment of Respiratory Diseases?Antioxidants (Basel, Switzerland) · 2022Review
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- Banhasasim-Tang Ameliorates Spatial Memory by Suppressing Oxidative Stress through Regulation of ERK/p38 Signaling in Hippocampus of Mice.Oxidative medicine and cellular longevity · 2021Article
- Natural Antioxidant and Anti-Inflammatory Compounds in Foodstuff or Medicinal Herbs Inducing Heme Oxygenase-1 Expression.Antioxidants (Basel, Switzerland) · 2020Review
- The Intrinsic Virtues of EGCG, anMolecules (Basel, Switzerland) · 2020Review
- Preclinical Pharmacological Activities of Epigallocatechin-3-gallate in Signaling Pathways: An Update on Cancer.Molecules (Basel, Switzerland) · 2020Review
- Piceatannol markedly upregulates heme oxygenase-1 expression and alleviates oxidative stress in skeletal muscle cells.Biochemistry and biophysics reports · 2019Article
Corrections and comments
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Authors and funding
9 authors at 3 institutions in 1 country.
Funding
Abstract
Epigallocatechin gallate (EGCG), the major polyphenol in green tea, acutely stimulates production of nitric oxide (NO) from vascular endothelium to reduce hypertension and improve endothelial dysfunction in spontaneously hypertensive rats. Herein, we explored additional mechanisms whereby EGCG may mediate beneficial cardiovascular actions. When compared with vehicle-treated controls, EGCG treatment (2.5 μM, 8 h) of human aortic endothelial cells (HAEC) caused a ~three-fold increase in heme oxygenase-1 (HO-1) mRNA and protein with comparable increases in HO-1 activity. This was unaffected by pretreatment of cells with wortmannin, LY294002, PD98059 or L-NAME (PI 3-kinase, MEK and NO synthase inhibitors, respectively). Pretreatment of HAEC with SB203580 (p38 MAPK inhibitor) or siRNA knockdown of p38 MAPK completely blocked EGCG-stimulated induction of HO-1. EGCG treatment also inhibited tumor-necrosis-factor-α-stimulated expression of vascular cell adhesion molecule (VCAM)-1 and decreased adhesion of monocytes to HAEC. siRNA knockdown of HO-1, p38 MAPK or Nrf-2 blocked these inhibitory actions of EGCG. In HAEC transiently transfected with a human HO-1 promoter luciferase reporter (or an isolated Nrf-2 responsive region), luciferase activity increased in response to EGCG. This was inhibitable by SB203580 pretreatment. EGCG-stimulated expression of HO-1 and Nrf-2 was blocked by siRNA knockdown of Nrf-2 or p38 MAPK. Finally, liver from mice chronically treated with EGCG had increased HO-1 and decreased VCAM-1 expression. Thus, in vascular endothelium, EGCG requires p38 MAPK to increase expression of Nrf-2 that drives expression of HO-1, resulting in increased HO-1 activity. Increased HO-1 expression may underlie anti-inflammatory actions of EGCG in vascular endothelium that may help mediate beneficial cardiovascular actions of green tea.
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