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      Effect of Epigallocatechin Gallate on Viability of Kudoa septempunctata

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          Abstract

          Kudoa septempunctata have been reported as a causative agent for acute transient gastrointestinal troubles after eating raw olive flounder ( Paralichthys olivaceus). It raised public health concerns and quarantine control in several countries. Quantitative evaluation on viability of K. septempunctata is crucial to develop effective chemotherapeutics against it. A cytometry using fluorescent stains was employed to assess effect of three compounds on viability of K. septempunctata. Epigallocatechin gallate reduced markedly viability of K. septempunctata at 0.5 mM or more, and damaged K. septempunctata spores by producing cracks.

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          Anti-infective properties of epigallocatechin-3-gallate (EGCG), a component of green tea.

          J Steinmann, J Buer, T Pietschmann … (2013)
          The consumption of green tea (Camellia sinensis) has been shown to have many physiological and pharmacological health benefits. In the past two decades several studies have reported that epigallocatechin-3-gallate (EGCG), the main constituent of green tea, has anti-infective properties. Antiviral activities of EGCG with different modes of action have been demonstrated on diverse families of viruses, such as Retroviridae, Orthomyxoviridae and Flaviviridae and include important human pathogens like human immunodeficiency virus, influenza A virus and the hepatitis C virus. Furthermore, the molecule interferes with the replication cycle of DNA viruses like hepatitis B virus, herpes simplex virus and adenovirus. Most of these studies demonstrated antiviral properties within physiological concentrations of EGCG in vitro. In contrast, the minimum inhibitory concentrations against bacteria were 10-100-fold higher. Nevertheless, the antibacterial effects of EGCG alone and in combination with different antibiotics have been intensively analysed against a number of bacteria including multidrug-resistant strains such as methicillin-resistant Staphylococcus aureus or Stenotrophomonas maltophilia. Furthermore, the catechin EGCG has antifungal activity against human-pathogenic yeasts like Candida albicans. Although the mechanistic effects of EGCG are not fully understood, there are results indicating that EGCG binds to lipid membranes and affects the folic acid metabolism of bacteria and fungi by inhibiting the cytoplasmic enzyme dihydrofolate reductase. This review summarizes the current knowledge and future perspectives on the antibacterial, antifungal and antiviral effects of the green tea constituent EGCG. © 2012 The Authors. British Journal of Pharmacology © 2012 The British Pharmacological Society.
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            A review on the application of herbal medicines in the disease control of aquatic animals

            Fei Zhu (2020)
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              Myxobolus cerebralis, a Worldwide Cause of Salmonid Whirling Disease

              G. L. Hoffman (1990)
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                Author and article information

                Journal
                Journal ID (nlm-ta): Korean J Parasitol
                Journal ID (iso-abbrev): Korean J Parasitol
                Title: The Korean Journal of Parasitology
                Publisher: The Korean Society for Parasitology and Tropical Medicine
                ISSN (Print): 0023-4001
                ISSN (Electronic): 1738-0006
                Publication date (Print): October 2020
                Publication date (Electronic): 22 October 2020
                Volume: 58
                Issue: 5
                Pages: 593-597
                Affiliations
                [1 ]Department of Marine Life Sciences & Marine Science Institute, Jeju National University, Jeju Self-Governing Province 63243, Korea
                [2 ]Department of Marine Life Science (BK FOUR) and Marine Science Institute, Jeju National University, Jeju Self-Governing Province 63243, Korea
                Author notes
                [* ]Corresponding author ( jehee@ 123456jejunu.ac.kr )
                Author information
                https://orcid.org/0000-0001-9677-4526
                https://orcid.org/0000-0001-9144-3648
                Article
                Publisher ID: kjp-58-5-593
                DOI: 10.3347/kjp.2020.58.5.593
                PMC ID: 7672230
                SO-VID: 23b65ed9-d3cc-4634-9aa5-ad979234cf50
                Copyright © Copyright © 2020 by The Korean Society for Parasitology and Tropical Medicine
                License:

                This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( https://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                Date received : 5 May 2020
                Date revision received : 8 September 2020
                Date accepted : 12 September 2020
                Categories
                Subject: Brief Communication

                ScienceOpen disciplines: Parasitology
                Keywords: kudoa septempunctata,olive flounder,flow cytometry,epigallocatechin gallate
                Data availability:
                ScienceOpen disciplines: Parasitology
                Keywords: kudoa septempunctata, olive flounder, flow cytometry, epigallocatechin gallate

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