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Effect green tea on mrsa

Amani F Abaza, Osama N Mohamed, Fathy K El-Fiky, Khaled A Ahmed
OBJECTIVES: This study aimed to determine the occurrence of methicillin-resistant Staphylococcus aureus (MRSA) nasal carriage among patients, healthcare workers (HCWs), and community individuals, as well as to test the effect of tea extracts on detected S. aureus isolates. MATERIALS AND METHODS: This cross-sectional study that was followed by an experimental study included a total of 1021 nasal swab samples that were collected from 470 community cases, 191 HCWs, and 360 patients...
September 2016: Journal of the Egyptian Public Health Association
J Steinmann, J Buer, T Pietschmann, E Steinmann
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...
March 2013: British Journal of Pharmacology
M Nakata, W Tang
The Japan-China Joint Medical Workshop on Drug Discoveries and Therapeutics 2008 (JCMWDDT 2008) was held from September 29 to October 1, 2008 at The University of Tokyo, Tokyo, Japan. JCMWDDT is an international workshop that is mainly organized by Asian editorial members of Drug Discoveries & Therapeutics (<a href="" class="blue"></a>) for the purpose of promoting research exchanges in the field of drug discovery and therapeutic. This year's JCMWDDT is the second workshop and focused particularly on novel development and technological innovation of anti-influenza agents...
October 2008: Drug Discoveries & Therapeutics
Yun-Seok Cho, Neal L Schiller, Kye-Heon Oh
The antibacterial effects of tea polyphenols (TPP) extracted from Korean green tea (Camellia sinensis) against clinical isolates of methicillin-resistant Staphylococcus aureus (MRSA) were evaluated. Characterization of the minimal inhibitory concentration (MIC) of oxacillin for 30 S. aureus strains isolated from patients treated with oxacillin identified 13 strains with an oxacillin MIC >or= 4 microg/mL as methicillin-resistant Staphylococcus aureus (MRSA) (range: 8 to 512 microg/mL), while 17 strains were methicillin-susceptible Staphylococcus aureus (MSSA) (range: 0...
December 2008: Current Microbiology
T S Yam, J M Hamilton-Miller, S Shah
Extracts of tea (Camellia sinensis) can reverse methicillin resistance in methicillin-resistant Staphylococcus aureus (MRSA) and also, to some extent, penicillin resistance in beta-lactamase-producing S. aureus. These phenomena are explained by prevention of PBP2' synthesis and inhibition of secretion of beta-lactamase, respectively. Synergy between beta-lactams and tea extracts were demonstrated by disc diffusion, chequerboard titration and growth curves. Partition chromatography of an extract of green tea on Sephadex LH-20 yielded several fractions, one of which contained a virtually pure compound that showed the above-mentioned activities, at concentrations above about 2 mg/L...
August 1998: Journal of Antimicrobial Chemotherapy
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