Epigenetic and Drug Response Modulation of Epigalocaten-In-3-Gallate in Staphylococcus aureus with Divergent Resistance Phenotypes
Antibiotics (Basel). 2023 Mar 4;12(3):519. doi:10.3390/antibiotics12030519
“EGCG has a wide range of health benefits, including its use as an antimicrobial agent against Gram-negative and Gram-positive bacteria (e.g., E. coli, Salmonella spp., S. aureus and Enterococcus spp.), some fungi (e.g., Candida albicans) and viruses (e.g., HIV, Herpes simplex and Influenza)”.
“Overall, this study supports the antimicrobial and synergistic potential of EGCG and demonstrates that divergent resistant phenotypes of S. aureus strains are associated with the differential expression of epigenetic and drug-resistance modulator genes as well as divergent molecular profiles.”
Potential Therapeutic Targets of Epigallocatechin Gallate (EGCG), the Most Abundant Catechin in Green Tea, and Its Role in the Therapy of Various Types of Cancer.
Molecules (Basel, Switzerland),09 Jul 2020, 25(14):E3146 https://doi.org/10.3390/molecules25143146
"Epigallocatechin-3-gallate (EGCG), an active compound of green tea and its role in diseases cure and prevention has been proven. Its role in diseases management can be attributed to its antioxidant and anti-inflammatory properties. The anti-cancer role of this green tea compound has been confirmed in various types of cancer and is still being under explored. EGCG has been proven to possess a chemopreventive effect through inhibition of carcinogenesis process such as initiation, promotion, and progression. In addition, this catechin has proven its role in cancer management through modulating various cell signaling pathways such as regulating proliferation, apoptosis, angiogenesis and killing of various types of cancer cells. The additive or synergistic effect of epigallocatechin with chemopreventive agents has been verified as it reduces the toxicities and enhances the anti-cancerous effects. Despite its effectiveness and safety, the implications of EGCG in cancer prevention is certainly still discussed due to a poor bioavailability. Several studies have shown the ability to overcome poor bioavailability through nanotechnology-based strategies such as encapsulation, liposome, micelles, nanoparticles and various other formulation. In this review, we encapsulate therapeutic implication of EGCG in cancer management and the mechanisms of action are discussed with an emphasis on human clinical trials."
Green tea as an effective antimicrobial for urinary tract infections caused by Escherichia coli
Front Microbiol. 2013 Jun 18;4:162. doi:10.3389/fmicb.2013.00162
"Urinary tract infections (UTIs) are a very most common type of infection worldwide, and result in billions of dollars in medical care costs.Escherichia coliis the infective agent for 80–90% of all UTIs. Green tea, derived from leaves of theCamellia sinensisplant has been shown to have various potential health benefits (e.g., cardiovascular disease and cancer). The major beneficial components of green tea have been characterized, and are now known to be polyphenolic catechins. The main catechins in green tea are (-)-epicatechin-3-gallate, (-)-epigallocatechin (EGC), (-)-epicatechin, and (-)-epigallocatechin-3-gallate (EGCG). EGCG and EGC have been shown to have the greatest antimicrobial effects, but only EGC has been shown to be excreted in urine. Isolates ofE. colifrom UTIs collected between 2007 and 2008 were characterized for antimicrobial resistance to standard drugs. Then 80 of these isolates, representing a wide spectrum of antimicrobial susceptibility patterns, were selected for testing using an extract of green tea."