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Effect of Tea Catechins on Influenza Infection and the Common Cold with a Focus on Epidemiological/Clinical Studies

Molecules (Basel, Switzerland), 2018-07, Vol.23 (7), p.1795 [Peer Reviewed Journal]

2018. This work is licensed under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;2018 by the authors. 2018 ;ISSN: 1420-3049 ;EISSN: 1420-3049 ;DOI: 10.3390/molecules23071795 ;PMID: 30037024

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Title:
Effect of Tea Catechins on Influenza Infection and the Common Cold with a Focus on Epidemiological/Clinical Studies
Author: Furushima, Daisuke ; Ide, Kazuki ; Yamada, Hiroshi
Subjects: Antiviral activity ; Antiviral Agents - chemistry ; Antiviral Agents - pharmacology ; bioactivity ; Catechin ; Catechin - chemistry ; Catechin - pharmacology ; Common cold ; Common Cold - epidemiology ; Common Cold - prevention & control ; Common Cold - virology ; Encephalitis ; epidemiological study ; Epidemiology ; Exo-a-sialidase ; Green tea ; Humans ; Hygiene ; Immunity ; Infections ; Infectious diseases ; Influenza ; influenza infection ; Influenza, Human - epidemiology ; Influenza, Human - prevention & control ; Influenza, Human - virology ; Masks ; Orthomyxoviridae - drug effects ; Plant Extracts - chemistry ; Plant Extracts - pharmacology ; Prophylaxis ; Respiratory tract ; Respiratory tract diseases ; Review ; Tea ; Tea - chemistry ; tea catechins ; Viral infections ; Virus Replication - drug effects ; Viruses
Is Part Of: Molecules (Basel, Switzerland), 2018-07, Vol.23 (7), p.1795
Description: Influenza and the common cold are acute infectious diseases of the respiratory tract. Influenza is a severe disease that is highly infectious and can progress to life-threating diseases such as pneumonia or encephalitis when aggravated. Due to the fact that influenza infections and common colds spread easily via droplets and contact, public prevention measures, such as hand washing and facial masks, are recommended for influenza prophylaxis. Experimental studies have reported that tea catechins inhibited influenza viral adsorption and suppressed replication and neuraminidase activity. They were also effective against some cold viruses. In addition, tea catechins enhance immunity against viral infection. Although the antiviral activity of tea catechins has been demonstrated, the clinical evidence to support their utility remains inconclusive. Since the late 1990s, several epidemiological studies have suggested that the regular consumption of green tea decreases influenza infection rates and some cold symptoms, and that gargling with tea catechin may protect against the development of influenza infection. This review briefly summarizes the effect of tea catechins on influenza infection and the common cold with a focus on epidemiological/clinical studies, and clarifies the need for further studies to confirm their clinical efficacy.
Publisher: Switzerland: MDPI AG
Language: English
Identifier: ISSN: 1420-3049
EISSN: 1420-3049
DOI: 10.3390/molecules23071795
PMID: 30037024
Source: Geneva Foundation Free Medical Journals at publisher websites
MEDLINE
PubMed Central
Directory of Open Access Journals
Alma/SFX Local Collection
ProQuest Central

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Effect of Tea Catechins on Influenza Infection and the Common Cold with a Focus on Epidemiological/Clinical Studies

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