Green Tea Catechin Epigallocatechin Gallate Inhibits Vegetative Cell Outgrowth and Expression of Beta-Lactamase Genes in Penicillin-Resistant Bacillus anthracis Strain PCr

The green tea catechin epigallocatechin gallate (EGCg) has antimicrobial effects on many bacteria. In this study, we investigated the inhibitory effects of EGCg on Bacillus anthracis spores and vegetative cells. The B. anthracis spores were insensitive to EGCg, but the growth of vegetative cells der...

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Published inPathogens Vol. 13; no. 8; p. 699
Main Authors Okutani, Akiko, Morikawa, Shigeru, Maeda, Ken
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 19.08.2024
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Abstract The green tea catechin epigallocatechin gallate (EGCg) has antimicrobial effects on many bacteria. In this study, we investigated the inhibitory effects of EGCg on Bacillus anthracis spores and vegetative cells. The B. anthracis spores were insensitive to EGCg, but the growth of vegetative cells derived from germinated spores was inhibited by EGCg. Moreover, EGCg decreased the minimum inhibitory concentration of penicillin and meropenem for penicillin-resistant B. anthracis. In the penicillin-resistant B. anthracis strain, the transcription levels of the beta-lactamase genes (bla1 and bla2) decreased significantly following the treatment with 50 µg/mL EGCg. These results suggest that the appropriate application of EGCg may effectively control the penicillin-resistant B. anthracis growth and beta-lactamase production.
AbstractList The green tea catechin epigallocatechin gallate (EGCg) has antimicrobial effects on many bacteria. In this study, we investigated the inhibitory effects of EGCg on Bacillus anthracis spores and vegetative cells. The B. anthracis spores were insensitive to EGCg, but the growth of vegetative cells derived from germinated spores was inhibited by EGCg. Moreover, EGCg decreased the minimum inhibitory concentration of penicillin and meropenem for penicillin-resistant B. anthracis. In the penicillin-resistant B. anthracis strain, the transcription levels of the beta-lactamase genes (bla1 and bla2) decreased significantly following the treatment with 50 µg/mL EGCg. These results suggest that the appropriate application of EGCg may effectively control the penicillin-resistant B. anthracis growth and beta-lactamase production.The green tea catechin epigallocatechin gallate (EGCg) has antimicrobial effects on many bacteria. In this study, we investigated the inhibitory effects of EGCg on Bacillus anthracis spores and vegetative cells. The B. anthracis spores were insensitive to EGCg, but the growth of vegetative cells derived from germinated spores was inhibited by EGCg. Moreover, EGCg decreased the minimum inhibitory concentration of penicillin and meropenem for penicillin-resistant B. anthracis. In the penicillin-resistant B. anthracis strain, the transcription levels of the beta-lactamase genes (bla1 and bla2) decreased significantly following the treatment with 50 µg/mL EGCg. These results suggest that the appropriate application of EGCg may effectively control the penicillin-resistant B. anthracis growth and beta-lactamase production.
The green tea catechin epigallocatechin gallate (EGCg) has antimicrobial effects on many bacteria. In this study, we investigated the inhibitory effects of EGCg on Bacillus anthracis spores and vegetative cells. The B. anthracis spores were insensitive to EGCg, but the growth of vegetative cells derived from germinated spores was inhibited by EGCg. Moreover, EGCg decreased the minimum inhibitory concentration of penicillin and meropenem for penicillin-resistant B. anthracis. In the penicillin-resistant B. anthracis strain, the transcription levels of the beta-lactamase genes (bla1 and bla2) decreased significantly following the treatment with 50 µg/mL EGCg. These results suggest that the appropriate application of EGCg may effectively control the penicillin-resistant B. anthracis growth and beta-lactamase production.
The green tea catechin epigallocatechin gallate (EGCg) has antimicrobial effects on many bacteria. In this study, we investigated the inhibitory effects of EGCg on spores and vegetative cells. The spores were insensitive to EGCg, but the growth of vegetative cells derived from germinated spores was inhibited by EGCg. Moreover, EGCg decreased the minimum inhibitory concentration of penicillin and meropenem for penicillin-resistant . In the penicillin-resistant strain, the transcription levels of the beta-lactamase genes ( and ) decreased significantly following the treatment with 50 µg/mL EGCg. These results suggest that the appropriate application of EGCg may effectively control the penicillin-resistant growth and beta-lactamase production.
The green tea catechin epigallocatechin gallate (EGCg) has antimicrobial effects on many bacteria. In this study, we investigated the inhibitory effects of EGCg on Bacillus anthracis spores and vegetative cells. The B. anthracis spores were insensitive to EGCg, but the growth of vegetative cells derived from germinated spores was inhibited by EGCg. Moreover, EGCg decreased the minimum inhibitory concentration of penicillin and meropenem for penicillin-resistant B. anthracis . In the penicillin-resistant B. anthracis strain, the transcription levels of the beta-lactamase genes ( bla1 and bla2 ) decreased significantly following the treatment with 50 µg/mL EGCg. These results suggest that the appropriate application of EGCg may effectively control the penicillin-resistant B. anthracis growth and beta-lactamase production.
Author Ken Maeda
Shigeru Morikawa
Akiko Okutani
AuthorAffiliation Department of Veterinary Science, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan; morikawa@niid.go.jp (S.M.); kmaeda@niid.go.jp (K.M.)
AuthorAffiliation_xml – name: Department of Veterinary Science, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan; morikawa@niid.go.jp (S.M.); kmaeda@niid.go.jp (K.M.)
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Snippet The green tea catechin epigallocatechin gallate (EGCg) has antimicrobial effects on many bacteria. In this study, we investigated the inhibitory effects of...
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StartPage 699
SubjectTerms Anthrax
Anti-Bacterial Agents - pharmacology
Antibiotics
Antimicrobial activity
Bacillus anthracis
Bacillus anthracis - drug effects
Bacillus anthracis - genetics
Bacteria
beta-lactamase
beta-Lactamases - genetics
beta-Lactamases - metabolism
Catechin
Catechin - analogs & derivatives
Catechin - pharmacology
Epigallocatechin gallate
Gene Expression Regulation, Bacterial - drug effects
Genes
Genomes
Gram-positive bacteria
Green tea
green tea catechin
Medicine
Meropenem
Meropenem - pharmacology
Microbial Sensitivity Tests
Minimum inhibitory concentration
Penicillin
Penicillin Resistance - genetics
penicillins
Penicillins - pharmacology
R
Spores
Spores, Bacterial - drug effects
Spores, Bacterial - genetics
Staphylococcus infections
Tea - chemistry
Variance analysis
Vegetative cells
β Lactamase
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Title Green Tea Catechin Epigallocatechin Gallate Inhibits Vegetative Cell Outgrowth and Expression of Beta-Lactamase Genes in Penicillin-Resistant Bacillus anthracis Strain PCr
URI https://cir.nii.ac.jp/crid/1870303266600110976
https://www.ncbi.nlm.nih.gov/pubmed/39204299
https://www.proquest.com/docview/3097998761
https://www.proquest.com/docview/3099794886
https://www.proquest.com/docview/3153757645
https://pubmed.ncbi.nlm.nih.gov/PMC11356866
https://doaj.org/article/ba9cbbe5529d4b2fb3543ced44beabbf
Volume 13
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