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Nutrients
Volume 14
Issue 5
10.3390/nu14050972
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Article

Chinese Tea Alleviates CCl4-Induced Liver Injury through the NF-κBorNrf2Signaling Pathway in C57BL-6J Mice

by
Zhaoyu Wu
1,2,†,
Lingli Sun
1,†,
Ruohong Chen
1,
Shuai Wen
1,
Qiuhua Li
1,
Xingfei Lai
1,
Zhenbiao Zhang
1,
Fanrong Cao
2,* and
Shili Sun
1,*
1
Tea Research Institute, Guangdong Academy of Agricultural Sciences, Guangdong Key Laboratory of Tea Resources Innovation & Utilization, Guangzhou 510640, China
2
Department of Tea Science, College of Horticulture, South China Agricultural University, Guangzhou 510641, China
*
Authors to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Nutrients 2022, 14(5), 972; https://doi.org/10.3390/nu14050972
Submission received: 10 January 2022 / Revised: 14 February 2022 / Accepted: 20 February 2022 / Published: 24 February 2022
(This article belongs to the Section Nutrigenetics and Nutrigenomics)
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Abstract

Liver injury is a life-threatening condition that is usually caused by excessive alcohol consumption, improperdiet, and stressful lifestyle and can even progress to liver cancer. Tea is a popular beverage with proven health benefits and is known to exert a protective effect on the liver, intestines, and stomach. In this study, we analyzed the therapeutic effects of six kinds of tea on carbon tetrachloride (CCl4)-induced liver injury in a mouse model. The mice were injected with 10 mL/kg 5% CCl4 to induce liver injury and then given oral gavage of green tea, yellow tea, oolong tea, white tea, black tea, and dark tea, respectively. The serum levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were measured, and the expression levels of inflammation and oxidative stress-related proteins in the liver tissues were quantified. All six kinds of tea partly reduced the liver index, restored the size of the enlarged liver in the CCl4 model, and decreased the serum levels of ALT and AST. Furthermore, the highly fermented dark tea significantly reduced the expression levels of NF-κB and the downstream inflammatory factors, whereas the unfermented green tea inhibited oxidative stress by activating the antioxidant Nrf2 pathway. Taken together, tea can protect against liver inflammation, and unfermented tea can improve antioxidant levels. Further studies are needed on the bioactive components of tea to develop drugs against liver injury.
Keywords: tea; liver injury; anti-inflammation; NF-κB pathway; Nrf2 pathway tea; liver injury; anti-inflammation; NF-κB pathway; Nrf2 pathway

Share and Cite

MDPI and ACS Style

Wu, Z.; Sun, L.; Chen, R.; Wen, S.; Li, Q.; Lai, X.; Zhang, Z.; Cao, F.; Sun, S. Chinese Tea Alleviates CCl4-Induced Liver Injury through the NF-κBorNrf2Signaling Pathway in C57BL-6J Mice. Nutrients 2022, 14, 972. https://doi.org/10.3390/nu14050972

AMA Style

Wu Z, Sun L, Chen R, Wen S, Li Q, Lai X, Zhang Z, Cao F, Sun S. Chinese Tea Alleviates CCl4-Induced Liver Injury through the NF-κBorNrf2Signaling Pathway in C57BL-6J Mice. Nutrients. 2022; 14(5):972. https://doi.org/10.3390/nu14050972

Chicago/Turabian Style

Wu, Zhaoyu, Lingli Sun, Ruohong Chen, Shuai Wen, Qiuhua Li, Xingfei Lai, Zhenbiao Zhang, Fanrong Cao, and Shili Sun. 2022. "Chinese Tea Alleviates CCl4-Induced Liver Injury through the NF-κBorNrf2Signaling Pathway in C57BL-6J Mice" Nutrients 14, no. 5: 972. https://doi.org/10.3390/nu14050972

APA Style

Wu, Z., Sun, L., Chen, R., Wen, S., Li, Q., Lai, X., Zhang, Z., Cao, F., & Sun, S. (2022). Chinese Tea Alleviates CCl4-Induced Liver Injury through the NF-κBorNrf2Signaling Pathway in C57BL-6J Mice. Nutrients, 14(5), 972. https://doi.org/10.3390/nu14050972

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