A Natural Plant Source-Tea Polyphenols, a Potential Drug for Improving Immunity and Combating Virus

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Abstract

The coronavirus disease 2019 (COVID-19) is still in a global epidemic, which has profoundly affected people’s lives. Tea polyphenols (TP) has been reported to enhance the immunity of the body to COVID-19 and other viral infectious diseases. The inhibitory effect of TP on COVID-19 may be achieved through a series of mechanisms, including the inhibition of multiple viral targets, the blocking of cellular receptors, and the activation of transcription factors. Emerging evidence shows gastrointestinal tract is closely related to respiratory tract, therefore, the relationship between the state of the gut–lung axis microflora and immune homeostasis of the host needs further research. This article summarized that TP can improve the disorder of flora, reduce the occurrence of cytokine storm, improve immunity, and prevent COVID-19 infection. TP may be regarded as a potential and valuable source for the design of new antiviral drugs with high efficiency and low toxicity.

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Hong, M., Cheng, L., Liu, Y., Wu, Z., Zhang, P., & Zhang, X. (2022, February 1). A Natural Plant Source-Tea Polyphenols, a Potential Drug for Improving Immunity and Combating Virus. Nutrients. MDPI. https://doi.org/10.3390/nu14030550

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