Abstract
Background
In patients with type 2 diabetes mellitus (T2DM) the inflammatory and metabolic responses to epigallocatechin-3-gallate (EGCG) are unknown.
Objectives
Evaluate the impacts of EGCG on metabolic factors and some biomarkers of stress oxidative in patients with T2DM.
Methods
In this randomized, double-blind, placebo-controlled trial, 50 patients with T2DM consumed either 2 tablets (300 mg) EGCG (n=25) or wheat flour as placebo (n=25) for 2 months. The total antioxidant capacity (TAC), interleukin-6 (IL-6), lipid profile, mean arterial pressure (MAP), atherogenic index of plasma (AIP) were evaluated before and after the intervention.
Results
The finding of present study exhibited a significant increase in the serum levels of TAC after the EGCG supplementation (p=0.001). Also, in compare with control group, the mean changes of TAC were significantly higher in supplement group (p=0.01). In intervention group, a significant decrease was observed in the mean levels of triglyceride, total cholesterol, diastolic blood pressure (DBP), AIP, and MAP (p<0.05). Taking EGCG resulted in the mean changes of total cholesterol, MAP and DBP were significantly lower in compare with control group (p<0.05).
Conclusions
This study recommended that EGCG supplementation may be improved blood pressure, lipid profile, AIP, and oxidative status in patients with T2DM.
Acknowledgments
Vice-Chancellor for Research Affairs of Ahvaz Jundishapur University of Medical Sciences financially supported this study (NRC-9505).
Research funding: None declared.
Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
Competing interest: Authors state no conflict of interest.
Informed consent: The informed consent was obtained from all participants.
Ethical approval: The Ethics Committee of the Ahvaz Jundishapur University of Medical Science approved this study (No. IR.AJUMS.REC.1395.548).
References
1. Javid, AZ, Hosseini, SA, Gholinezhad, H, Moradi, L, Haghighi-zadeh, MH, Bazyar, H. Antioxidant and anti-inflammatory properties of melatonin in patients with type 2 diabetes mellitus with periodontal disease under non-surgical periodontal therapy: a double-blind, placebo-controlled trial. Diabetes, metabolic syndrome and obesity. Targets and Therapy 2020;13:753–61.10.2147/DMSO.S242208Search in Google Scholar
2. Ogurtsova, K, da Rocha Fernandes, J, Huang, Y, Linnenkamp, U, Guariguata, L, Cho, N, et al.. IDF Diabetes Atlas: global estimates for the prevalence of diabetes for 2015 and 2040. Diabetes Res Clin Pract 2017;128:40–50. https://doi.org/10.1016/j.diabres.2017.03.024.Search in Google Scholar PubMed
3. Bazyar, H, Adibmanesh, A, Javid, AZ, Maghsoumi-Norouzabad, L, Gravand, E, Alipour, M, et al.. The relationship between metabolic factors and anthropometric indices with periodontal status in type 2 diabetes mellitus patients with chronic periodontitis. Obes Med 2019;16:100138. https://doi.org/10.1016/j.obmed.2019.10013.Search in Google Scholar
4. Tiwari, BK, Pandey, KB, Abidi, A, Rizvi, SI. Markers of oxidative stress during diabetes mellitus. J Biomark 2013;2013:378790. https://doi.org/10.1155/2013/378790.Search in Google Scholar PubMed PubMed Central
5. Rehman, K, Akash, MSH. Mechanism of generation of oxidative stress and pathophysiology of type 2 diabetes mellitus: how are they interlinked?. J Cell Biochem 2017;118:3577–85. https://doi.org/10.1002/jcb.26097.Search in Google Scholar PubMed
6. Jeremiah Oshiomame, U, Sogolo Lucky, L. Antioxidant effects and mechanisms of medicinal plants and their bioactive compounds for the prevention and treatment of type 2 diabetes: an updated review. Oxid Med Cell Longev 2020;2020:1356893. https://doi.org/10.1155/2020/1356893.Search in Google Scholar PubMed PubMed Central
7. Alipour, M, Malihi, R, Hosseini, SA, Abbasnezhad, A, Ghavami, A, Shahmohammadi, HA, et al.. The effects of catechins on related risk factors with Type 2 diabetes: a review. Prog Nutr 2018;20:12–20.Search in Google Scholar
8. Rasheed, NOA, Ahmed, LA, Abdallah, DM, El-Sayeh, BM. Paradoxical cardiotoxicity of intraperitoneally-injected epigallocatechin gallate preparation in diabetic mice. Sci Rep 2018;8:7880. https://doi.org/10.1038/s41598-018-25901-y.Search in Google Scholar PubMed PubMed Central
9. Hintzpeter, J, Stapelfeld, C, Loerz, C, Martin, H-J, Maser, E. Green tea and one of its constituents, epigallocatechine-3-gallate, are potent inhibitors of human 11β-hydroxysteroid dehydrogenase type 1. PloS One 2014;9:e84468. https://doi.org/10.1371/journal.pone.0084468.Search in Google Scholar PubMed PubMed Central
10. Yang, CS, Zhang, J, Zhang, L, Huang, J, Wang, Y. Mechanisms of body weight reduction and metabolic syndrome alleviation by tea. Mol Nutr Food Res 2016;60:160–74. https://doi.org/10.1002/mnfr.201500428.Search in Google Scholar PubMed PubMed Central
11. Guo, R, Zhou, F-M, Su, C-J, Liu, T-T, Zhou, Y, Fan, L, et al.. Epigallocatechin-3-gallate attenuates acute and chronic psoriatic itch in mice: involvement of antioxidant, anti-inflammatory effects and suppression of ERK and Akt signaling pathways. Biochem Biophys Res Commun 2018;496:1062–8. https://doi.org/10.1016/j.bbrc.2018.01.122.Search in Google Scholar PubMed
12. Higdon, JV, Frei, B. Tea catechins and polyphenols: health effects, metabolism, and antioxidant functions. Crit Rev Food Sci Nutr 2003;43:89–143. https://doi.org/10.1080/10408690390826464.Search in Google Scholar PubMed
13. Guo, Q, Zhou, S, Feng, X, Yang, J, Qiao, J, Zhao, Y, et al.. The sensibility of the new blood lipid indicator—atherogenic index of plasma (AIP) in menopausal women with coronary artery disease. Lipids Health Dis 2020;19:27. https://doi.org/10.1186/s12944-020-01208-8.Search in Google Scholar PubMed PubMed Central
14. Toolsee, NA, Aruoma, OI, Gunness, TK, Kowlessur, S, Dambala, V, Murad, F, et al.. Effectiveness of green tea in a randomized human cohort: relevance to diabetes and its complications. BioMed Res Int 2013;2013. https://doi.org/10.1155/2013/412379.Search in Google Scholar PubMed PubMed Central
15. Bagheri, R, Rashidlamir, A, Ashtary-Larky, D, et al.. Does green tea extract enhance the anti-inflammatory effects of exercise on fat loss? Br J Clin Pharmacol 2020;86:753–62. https://doi.org/10.1111/bcp.14176.Search in Google Scholar PubMed PubMed Central
16. Basu, A, Betts, NM, Mulugeta, A, Tong, C, Newman, E, Lyons, TJ. Green tea supplementation increases glutathione and plasma antioxidant capacity in adults with the metabolic syndrome. Nutr Res 2013;33:180–7. https://doi.org/10.1016/j.nutres.2012.12.010.Search in Google Scholar PubMed PubMed Central
17. Koutelidakis, AE, Rallidis, L, Koniari, K, Panagiotakos, D, Komaitis, M, Zampelas, A, et al.. Effect of green tea on postprandial antioxidant capacity, serum lipids, C-reactive protein and glucose levels in patients with coronary artery disease. Eur J Nutr 2014;53:479–86. https://doi.org/10.1007/s00394-013-0548-0.Search in Google Scholar PubMed
18. Vaz, SR, de Amorim, LMN, de Nascimento, PVF, Veloso, VSP, Nogueira, MS, Castro, IA, et al.. Effects of green tea extract on oxidative stress and renal function in diabetic individuals: a randomized, double-blinded, controlled trial. Journal of Functional Foods 2018;46:195–201. https://doi.org/10.1016/j.jff.2018.04.059.Search in Google Scholar
19. Othman, AI, El-Sawi, MR, El-Missiry, MA, Abukhalil, MH. Epigallocatechin-3-gallate protects against diabetic cardiomyopathy through modulating the cardiometabolic risk factors, oxidative stress, inflammation, cell death and fibrosis in streptozotocin-nicotinamide-induced diabetic rats. Biomed Pharmacother 2017;94:362–73. https://doi.org/10.1016/j.biopha.2017.07.129.Search in Google Scholar PubMed
20. Zhou, J, Mao, L, Xu, P, Wang, Y. Effects of (−)-Epigallocatechin gallate (EGCG) on energy expenditure and microglia-mediated hypothalamic inflammation in mice fed a high-fat diet. Nutrients 2018;10:E1681. https://doi.org/10.3390/nu10111681.Search in Google Scholar PubMed PubMed Central
21. Li, Y, Zhao, S, Zhang, W, Zhao, P, He, B, Wu, N, et al.. Epigallocatechin-3-O-gallate (EGCG) attenuates FFAs-induced peripheral insulin resistance through AMPK pathway and insulin signaling pathway in vivo. Diabetes Res Clin Pract 2011;93:205–14. https://doi.org/10.1016/j.diabres.2011.03.036.Search in Google Scholar PubMed
22. Ni, W, Zhou, Z, Liu, T, Wang, H, Deng, J, Liu, X, et al.. Gender-and lesion number-dependent difference in “atherogenic index of plasma” in Chinese people with coronary heart disease. Sci Rep 2017;7:13207. https://doi.org/10.1038/s41598-017-13267-6.Search in Google Scholar PubMed PubMed Central
23. El-Missiry, MA, Amer, MA, Hemieda, FA, Othman, AI, Sakr, DA, Abdulhadi, HL. Cardioameliorative effect of punicalagin against streptozotocin-induced apoptosis, redox imbalance, metabolic changes and inflammation. Egypt J basic appl sci 2015;2:247–60. https://doi.org/10.1016/j.ejbas.2015.09.004.Search in Google Scholar
24. Vogiatzi, G, Tousoulis, D, Stefanadis, C. The role of oxidative stress in atherosclerosis. Hellenic J Cardiol 2009;50:402–9.Search in Google Scholar
25. Yuan, F, Dong, H, Fang, K, Gong, J, Lu, F. Effects of green tea on lipid metabolism in overweight or obese people: a meta‐analysis of randomized controlled trials. Mol Nutr Food Res 2018;62. https://doi.org/10.1002/mnfr.201601122.Search in Google Scholar PubMed
26. Legeay, S, Rodier, M, Fillon, L, Faure, S, Clere, N. Epigallocatechin gallate: a review of its beneficial properties to prevent metabolic syndrome. Nutrients 2015;7:5443–68. https://doi.org/10.3390/nu7075230.Search in Google Scholar PubMed PubMed Central
27. Goto, T, Saito, Y, Morikawa, K, Kanamaru, Y, Nagaoka, S. Epigallocatechin gallate changes mRNA expression level of genes involved in cholesterol metabolism in hepatocytes. Br J Nutr 2012;107:769–73. https://doi.org/10.1017/s0007114511003758.Search in Google Scholar PubMed
28. Mortazavi, F, Paknahad, Z, Hasanzadeh, A. Effect of green tea consumption on the metabolic syndrome indices in women: a clinical trial study. J Res Med Sci 2013;18:1080–6.10.1108/NFS-03-2018-0091Search in Google Scholar
29. Tong, X, Taylor, AW, Giles, L, Wittert, GA, Shi, Z. Tea consumption is inversely related to 5-year blood pressure change among adults in Jiangsu, China: a cross-sectional study. Nutr J 2014;13:98. https://doi.org/10.1186/1475-2891-13-98.Search in Google Scholar PubMed PubMed Central
30. Chow, HS, Cai, Y, Hakim, IA, Crowell, JA, Shahi, F, Brooks, CA, et al.. Pharmacokinetics and safety of green tea polyphenols after multiple-dose administration of epigallocatechin gallate and polyphenon E in healthy individuals. Clin Canc Res 2003;9:3312–9.Search in Google Scholar
31. Jung, U, Choi, M-S. Obesity and its metabolic complications: the role of adipokines and the relationship between obesity, inflammation, insulin resistance, dyslipidemia and nonalcoholic fatty liver disease. Int J Mol Sci 2014;15:6184–223. https://doi.org/10.3390/ijms15046184.Search in Google Scholar PubMed PubMed Central
32. Oz, HS, Chen, T, de Villiers, WJ. Green tea polyphenols and sulfasalazine have parallel anti-inflammatory properties in colitis models. Front Immunol 2013;4:132. https://doi.org/10.3389/fimmu.2013.00132.Search in Google Scholar PubMed PubMed Central
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