Feasibility Study of Green Tea Extract as a Relief of Urinary Tract Inflammation

Lin, Wen-Hung; Lin, Yen-Ling; Liu, Yu-Chi; Cheng, Li-Chiu

doi:10.6763/IJTCMA.202011_4(2).0003

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医药卫生 > 中医药学

DOI： 10.6763/IJTCMA

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Feasibility Study of Green Tea Extract as a Relief of Urinary Tract Inflammation

探讨绿茶提取物作为缓解尿道炎症之可行性研究

林文宏(Lin, Wen-Hung) ；林彦伶(Lin, Yen-Ling) ；刘育奇(Liu, Yu-Chi) ；郑丽秋(Cheng, Li-Chiu)

中医本草芳香疗法期刊； 4 卷 2 期 (2020 / 11 / 15) ， P47 - 61

英文 DOI： 10.6763/IJTCMA.202011_4(2).0003

green tea extract ； tea polyphenols ； urinary tract infection ； anti-inflammatory ；绿茶提取物；茶多酚；泌尿道感染；抗发炎

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摘要 │ 参考文献 (21) │ 被引用文献 (2) │ 国际计量

摘要〈TOP〉

For many years, polyphenols are rich in antioxidant substances and has been promoted as a type of food which has been used to alleviate urinary tract infection (UTI). Since it has been considered as one of the non-antibiotic preventive choices, and be mostly used by the public. Studies have found that women have a 50% UTI risk in their lifetime, and even up to 20-30% experience subsequent UTI recurrence. Therefore, the purpose of this study is to use green tea extract to inhibit nitric oxide (NO), cytokine interleukin 6 (IL-6), and tumor necrosis factor-α (tumor necrosis factor ; TNF-α), research on alleviating urinary tract inflammation factors, and conduct research on alleviating inflammation factors in the urinary tract. The results have shown that the green tea extracts can significantly inhibit the inflammatory NO response which has been stimulated by bacterial lipopolysaccharide (LPS). The low dose (2.5% in cell culture medium), medium dose (5% in cell culture medium), and high dose (10% in cell culture solution) would often result in NO inducted inhibition of 5.5%, 16.8%, and 27.6% respectively. The extract of Green Tea can significantly inhibit the inflammatory IL-6 response which is stimulated by bacterial lipopolysaccharide. The low dose (2.5% in cell culture medium), medium dose (5% in cell culture medium), and high dose (10% in cell culture solution) would result in IL-6 inducted inhibition of 28.7%, 42.3%, and 50.3%, respectively. Yet, there was no inhibitory response to TNF-α within the same time. These extractions of Green Tea do not contain cytotoxicity within the tested cells. Nevertheless, Green tea extract has anti-inflammatory effects. However, there is no direct evidence to prove the test results that can reduce inflammation of the urethra. Therefore, the results of this cell test could provide to relevant experts and scholars for reference for direct evidence research. This is worthy of further research and discussion in the future. At the same time, more clinical trials and higher-quality research are needed.

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参考文献 ( 21 ) 〈TOP〉

Noormandi, Afsaneh(2014).Effects of Green Tea on Escherichia Coli as a Uropathogen.J Tradit Complement Med.,5(1),15-20.
连结：
Basso, B.,Giménez, F.,López, C.(2005).IL-1beta, IL-6 and IL-8 levels in gyneco-obstetric infections.Infect Dis Obstet Gynecol,13(4),207-11.
Deutch, C. E.(2017).Limited Effectiveness of Over-The-Counter Plant Preparations Used for the Treatment of Urinary Tract Infections as Inhibitors of the Urease Activity From Staphylococcus Saprophyticus.Appl Microbiol,122(5),1380-1388.
Gadzhieva, Z.K.,Kazilov, Y.B.(2016).The features in preventing recurrent lower urinary tract infection.Urologiia,3(3),65-76.
Gonçalves, B.,Ferreira, C.,Alves, C. T.,Henriques, M.,Azeredo, J.,Silva, S.(2016).Vulvovaginal candidiasis: epidemiology, microbiology and risk factors.Critical Reviews in Microbiology,42(6),2016-905 927.

被引用文献 ( 2 ) 〈TOP〉

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