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https://www.readbyqxmd.com/read/28611670/identification-of-epigallocatechin-3-gallate-as-an-inhibitor-of-phosphoglycerate-mutase-1
#1
Xiaoguang Li, Shuai Tang, Qian-Qian Wang, Elaine L-H Leung, Hongyue Jin, Yongzhuo Huang, Jia Liu, Meiyu Geng, Min Huang, Shengtao Yuan, Xiao-Jun Yao, Jian Ding
Targeting metabolic enzymes is believed to provide new therapeutic opportunities for cancer therapy. Phosphoglycerate mutase 1 (PGAM1) is a glycolytic enzyme that importantly coordinates glycolysis, pentose phosphate pathway (PPP) flux and serine biosynthesis in cancer cells and hence gains increasing interest of inhibitor discovery. Only few PGAM1 inhibitors have been reported and the molecular potency remains very limited. In an effort to discover new PGAM1 inhibitors, we carried out a biochemical assay-based screen that was focused on natural products derived small molecule compounds...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28592119/tea-polyphenol-inhibits-autophagy-to-sensitize-epirubicin-induced-apoptosis-in-human-bladder-cancer-cells
#2
W Gu, Y Lin, X Gou, W He
Resistance to anticancer agents such as Epirubicin (EPI) becomes a great challenge for treating bladder cancer. However, the mechanism by which chemoresistance arised is still elusive. In the present study, we showed evidence that EPI induced cytoprotective autophagy in bladder cancer cell lines T24 and BIU87. In addition, EPI robustly activated JNK-mediated phosphorylation of Bcl-2 and disruption of Bcl-2/Beclin-1 complex. Furthermore, the green tea derivative tea polyphenol (TP) inhibited EPI-induced autophagy and promoted apoptosis induced by EPI in bladder cancer cells...
June 8, 2017: Neoplasma
https://www.readbyqxmd.com/read/28587181/chronic-inflammatory-diseases-and-green-tea-polyphenols
#3
REVIEW
Helieh S Oz
Chronic inflammatory diseases affect millions of people globally and the incidence rate is on the rise. While inflammation contributes to the tissue healing process, chronic inflammation can lead to life-long debilitation and loss of tissue function and organ failure. Chronic inflammatory diseases include hepatic, gastrointestinal and neurodegenerative complications which can lead to malignancy. Despite the millennial advancements in diagnostic and therapeutic modalities, there remains no effective cure for patients who suffer from inflammatory diseases...
June 1, 2017: Nutrients
https://www.readbyqxmd.com/read/28534346/the-use-of-inexpensive-broad-spectrum-lower-toxicity-therapeutics-in-chronic-lymphocytic-leukemia
#4
Goran Marjanovic
The use of new and highly efficient targeted therapies for chronic lymphocytic leukemia (CLL) is costly and out of reach for many health care systems. On the other hand, in recent years, few inexpensive, broad-spectrum low-toxicity therapeutics have proven to be effective both in the preclinical and clinical settings. In early-stage CLL, the use of 2000 mg of epigallocatechin-3-gallate (EGCG) from the green tea extract twice a day was able to reduce the absolute leukocyte count. Supplementation of >2000 IU/day of Vitamin D in early low-risk CLL patients is able to delay disease progression and postpone the moment of initiation of the first treatment...
March 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28515762/biochemical-and-histopathological-effects-of-green-tea-nanoparticles-in-ironized-mouse-model
#5
Hidayat Sulistyo, Dhadhang Wahyu Kurniawan, Lantip Rujito
Transfusion in the treatment of thalassemia gives rise to iron deposits in many organs. Since there are many obstacles in the use of deferoxamin (DFO) as an iron chelating agent, it is important to find another alternative therapy that can act as iron chelation. The study aims to compare the histopathological pictures of the heart and spleen in iron-induced rats after administration of DFO and nanoparticles of green tea extract. The research used experimental research design with a post-test only control group...
April 2017: Research in Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28507011/influence-of-diet-in-multiple-sclerosis-a-systematic-review
#6
REVIEW
M José Bagur, M Antonia Murcia, Antonia M Jiménez-Monreal, Josep A Tur, M Mar Bibiloni, Gonzalo L Alonso, Magdalena Martínez-Tomé
Nutrition is considered to be a possible factor in the pathogenesis of the neurological disease multiple sclerosis (MS). Nutrition intervention studies suggest that diet may be considered as a complementary treatment to control the progression of the disease; a systematic review of the literature on the influence of diet on MS was therefore conducted. The literature search was conducted by using Medlars Online International Literature (MEDLINE) via PubMed and Scopus. Forty-seven articles met the inclusion criteria...
May 2017: Advances in Nutrition
https://www.readbyqxmd.com/read/28492194/comparison-of-the-streptococcus-mutans-and-lactobacillus-colony-count-changes-in-saliva-following-chlorhexidine-0-12-mouth-rinse-combination-mouth-rinse-and-green-tea-extract-0-5-mouth-rinse-in-children
#7
Rahul J Hegde, Shamika Kamath
BACKGROUND: Compounds present in green tea have been shown to inhibit the growth and activity of bacteria associated with oral infections. The purpose of this study was to compare the efficacy of chlorhexidine (0.12%) mouth rinse and combination (chlorhexidine and sodium fluoride) mouth rinse to that of green tea extract (0.5%) mouth rinse in reducing the salivary count of Streptococcus mutans and Lactobacillus in children. MATERIALS AND METHODS: The sample for the study consisted of 75 school children aged 8-12 years with four or more (decay component) of decayed, missing, and filled teeth index...
April 2017: Journal of the Indian Society of Pedodontics and Preventive Dentistry
https://www.readbyqxmd.com/read/28468264/improvement-of-antioxidant-defences-and-mood-status-by-oral-gaba-tea-administration-in-a-mouse-model-of-post-stroke-depression
#8
Maria Daglia, Arianna Di Lorenzo, Seyed Fazel Nabavi, Antoni Sureda, Sedigheh Khanjani, Akbar Hajizadeh Moghaddam, Nady Braidy, Seyed Mohammad Nabavi
Green GABA (GGABA) and Oolong GABA (OGABA) teas are relatively new varieties of tea, whose chemical composition and functional properties are largely under-studied, despite their promising health capacities. Post stroke depression (PSD) is a complication of stroke with high clinical relevance, yielding increasing mortality and morbidity rates, and a lower response to common therapies and rehabilitation. METHODS: Two chemically characterized commercial samples of GGABA and OGABA were investigated for effects on mood following oral administration using a mouse model of PSD, through common validated tests including the Despair Swimming Test and Tail Suspension Test...
April 29, 2017: Nutrients
https://www.readbyqxmd.com/read/28352352/combination-therapy-with-catechins-and-caffeine-inhibits-fat-accumulation-in-3t3-l1-cells
#9
Xiaojuan Zhu, Licong Yang, Feng Xu, Lezhen Lin, Guodong Zheng
Catechins and caffeine, which are green tea components, have a slimming effect; however, the combinational effect of fat metabolism in 3T3-L1 cells remains unclear. In the present study, 3T3-L1 cells were treated with catechins and caffeine in combination, and it was found that combination therapy with catechins and caffeine markedly reduced intracellular fat accumulation, mRNA expression levels of peroxisome proliferator-activated receptor-γ and CCAAT/enhancer-binding protein α in the early stage of cell differentiation were significantly reduced, and mRNA expression of fatty acid synthetase(FAS) andglycerol-3-phosphate dehydrogenase protein expression levels of FAS were downregulated...
February 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28289384/theabrownin-inhibits-cell-cycle-progression-and-tumor-growth-of-lung-carcinoma-through-c-myc-related-mechanism
#10
Li Zhou, Feifei Wu, Wangdong Jin, Bo Yan, Xin Chen, Yingfei He, Weiji Yang, Wenlin Du, Qiang Zhang, Yonghua Guo, Qiang Yuan, Xiaoqiao Dong, Wenhua Yu, Jin Zhang, Luwei Xiao, Peijian Tong, Letian Shan, Thomas Efferth
Green tea, the fresh leaves of Camellia sinensis, is not only a health-promoting beverage but also a traditional Chinese medicine used for prevention or treatment of cancer, such as lung cancer. Theabrownin (TB) is the main fraction responsible for the medicinal effects of green tea, but whether it possesses anti-cancer effect is unknown yet. This study aimed to determine the in vitro and in vivo anti-lung cancer effect of TB and explore the underlying molecular mechanism, by using A549 cell line and Lewis lung carcinoma-bearing mice...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28260629/uplc-esi-ms-ms-study-of-the-effect-of-green-tea-extract-on-the-oral-bioavailability-of-erlotinib-and-lapatinib-in-rats-potential-risk-of-pharmacokinetic-interaction
#11
Hadir M Maher, Nourah Z Alzoman, Shereen M Shehata, Ashwag O Abahussain
Green tea (GT) is one of the most consumed beverages worldwide. Tyrosine kinase inhibitors (TKIs) belong to the oral targeted therapy that gained much interest in oncology practice, among which are erlotinib (ERL) and lapatinib (LAP). Since green tea polyphenols (GTP) are known to be inhibitors of receptor tyrosine kinases, GTE could likely potentiate the anticancer effect of TKIs, but with a possibility of pharmacokinetic (PK) interaction with co-administered TKIs. In this study, the effect of GTE on the PK of ERL/LAP in rats was studied...
April 1, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28258675/cancer-chemoprevention-selected-molecular-mechanisms
#12
Katarzyna Walczak, Sebastian Marciniak, Grażyna Rajtar
The effect of diet on cancer formation and prevention of carcinogenesis has attracted considerable attention for years and is the subject of several studies. Some components of the daily diet, such as resveratrol, curcumin, genistein, gingerol, can significantly reduce the risk of cancer or affect the rate of tumor progression. Cancer chemoprevention assumes the use of natural or synthetic biologically active substances in order to prevent, inhibit or reverse the progression of cancer. There are many biologically active compounds in several natural products, i...
March 2, 2017: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/28245081/limited-effectiveness-of-over-the-counter-plant-preparations-used-for-the-treatment-of-urinary-tract-infections-as-inhibitors-of-the-urease-activity-from-staphylococcus-saprophyticus
#13
Charles E Deutch
AIMS: Urease is a key virulence factor for the Gram-positive urinary tract pathogen Staphylococcus saprophyticus and a potential target for antimicrobial therapy. The enzyme from S. saprophyticus is unusual in that it does not contain cysteine at the active site. The aims of this study were to test fourteen over-the-counter plant preparations as inhibitors of this urease and to determine if they can prevent the increase in pH that normally occurs in bacterial cultures containing urea...
February 28, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28181675/a-placebo-controlled-double-blinded-randomized-pilot-study-of-combination-phytotherapy-in-biochemically-recurrent-prostate-cancer
#14
M Diana van Die, Scott G Williams, Jon Emery, Kerry M Bone, Jeremy M G Taylor, Elizabeth Lusk, Marie V Pirotta
BACKGROUND: Men with biochemical recurrence of prostate cancer following local therapies often use natural supplements in an attempt to delay metastases and/or avoid the need for more aggressive treatments with undesirable side-effects. While there is a growing body of research into phytotherapeutic agents in this cohort, with some promising results, as yet no definitive recommendations can be made. This pilot study was undertaken to assess the feasibility of a fully-powered study to examine the effects of this phytotherapeutic intervention (containing turmeric, resveratrol, green tea and broccoli sprouts) on PSA doubling time in men with biochemical recurrence with a moderate PSA rise rate...
May 2017: Prostate
https://www.readbyqxmd.com/read/28160861/antibacterial-activity-of-epigallocatechin-3-gallate-egcg-and-its-synergism-with-%C3%AE-lactam-antibiotics-sensitizing-carbapenem-associated-multidrug-resistant-clinical-isolates-of-acinetobacter-baumannii
#15
Spencer Lee, Ghaida Saleh Al Razqan, Dong H Kwon
BACKGROUND: Infections caused by Acinetobacter baumannii were responsive to conventional antibiotic therapy. However, recently, carbapenem-associated multidrug resistant isolates have been reported worldwide and present a major therapeutic challenge. Epigallocatechin-3-Gallate (EGCG) extracted from green tea exhibits antibacterial activity. PURPOSE: We evaluated the antibacterial activity of EGCG and possible synergism with antibiotics in carbapenem-associated multidrug resistant A...
January 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28097041/effect-of-catechins-green-tea-extract-and-methylxanthines-in-combination-with-gentamicin-against-staphylococcus-aureus-and-pseudomonas-aeruginosa-combination-therapy-against-resistant-bacteria
#16
Bibi Sedigheh Fazly Bazzaz, Sahar Sarabandi, Bahman Khameneh, Hossein Hosseinzadeh
OBJECTIVES: Bacterial resistant infections have become a global health challenge and threaten the society's health. Thus, an urgent need exists to find ways to combat resistant pathogens. One promising approach to overcoming bacterial resistance is the use of herbal products. Green tea catechins, the major green tea polyphenols, show antimicrobial activity against resistant pathogens. The present study aimed to investigate the effect of catechins, green tea extract, and methylxanthines in combination with gentamicin against standard and clinical isolates of Staphylococcus aureus (S...
December 2016: Journal of Pharmacopuncture
https://www.readbyqxmd.com/read/27983622/effect-of-tea-polyphenol-compounds-on-anticancer-drugs-in-terms-of-anti-tumor-activity-toxicology-and-pharmacokinetics
#17
REVIEW
Jianhua Cao, Jie Han, Hao Xiao, Jinping Qiao, Mei Han
Multidrug resistance and various adverse side effects have long been major problems in cancer chemotherapy. Recently, chemotherapy has gradually transitioned from mono-substance therapy to multidrug therapy. As a result, the drug cocktail strategy has gained more recognition and wider use. It is believed that properly-formulated drug combinations have greater therapeutic efficacy than single drugs. Tea is a popular beverage consumed by cancer patients and the general public for its perceived health benefits...
December 14, 2016: Nutrients
https://www.readbyqxmd.com/read/27935974/epigallocatechin-3-gallate-upregulates-mir-221-to-inhibit-osteopontin-dependent-hepatic-fibrosis
#18
M L Arffa, M A Zapf, A N Kothari, V Chang, G N Gupta, X Ding, M M Al-Gayyar, W Syn, N M Elsherbiny, P C Kuo, Z Mi
Osteopontin (OPN) promotes hepatic fibrosis, and developing therapies targeting OPN expression in settings of hepatic injury holds promise. The polyphenol epigallocatechin-3-gallate (EGCG), found in high concentrations in green tea, downregulates OPN expression through OPN mRNA degradation, but the mechanism is unknown. Previous work has shown that microRNAs can decrease OPN mRNA levels, and other studies have shown that EGCG modulates the expression of multiple microRNAs. In our study, we first demonstrated that OPN induces hepatic stellate cells to transform into an activated state...
2016: PloS One
https://www.readbyqxmd.com/read/27930925/effects-of-green-tea-and-bisphosphonate-association-on-dental-socket-repair-of-rats
#19
Edson Yoshihiro Mada, Alana Claro Cunha Santos, Angelica Cristina Fonseca, Claudia Cristina Biguetti, Fernando Tozze Alves Neves, Patrícia Pinto Saraiva, Mariza Akemi Matsumoto
OBJECTIVES: To evaluate the effects of green tea intake and zoledronic acid intravenous therapy on teeth socket repair. DESIGN: Sixty male albinus Wistar rats were divided into 4 groups: C-Control, intravenous (IV) 0.9% saline solution (SS), GT-1% green tea in drinking water and IV SS, BP-IV zoledronic acid (BP), and BP+GT-IV BP and 1% green tea. 0.035mg/kg of BP was administered every two weeks. After ten weeks, right upper molars were extracted and the green tea started to be offered for GT and BP+GT...
December 5, 2016: Archives of Oral Biology
https://www.readbyqxmd.com/read/27886147/emerging-phytochemicals-for-the-prevention-and-treatment-of-head-and-neck-cancer
#20
REVIEW
Santosh K Katiyar
Despite the development of more advanced medical therapies, cancer management remains a problem. Head and neck squamous cell carcinoma (HNSCC) is a particularly challenging malignancy and requires more effective treatment strategies and a reduction in the debilitating morbidities associated with the therapies. Phytochemicals have long been used in ancient systems of medicine, and non-toxic phytochemicals are being considered as new options for the effective management of cancer. Here, we discuss the growth inhibitory and anti-cell migratory actions of proanthocyanidins from grape seeds (GSPs), polyphenols in green tea and honokiol, derived from the Magnolia species...
November 24, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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