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https://www.readbyqxmd.com/read/28352352/combination-therapy-with-catechins-and-caffeine-inhibits-fat-accumulation-in-3t3-l1-cells
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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...
February 9, 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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
https://www.readbyqxmd.com/read/27879653/ellagic-acid-inhibits-bladder-cancer-invasiveness-and-in-vivo-tumor-growth
#13
Claudia Ceci, Lucio Tentori, Maria Grazia Atzori, Pedro M Lacal, Elena Bonanno, Manuel Scimeca, Rosella Cicconi, Maurizio Mattei, Maria Gabriella de Martino, Giuseppe Vespasiani, Roberto Miano, Grazia Graziani
Ellagic acid (EA) is a polyphenolic compound that can be found as a naturally occurring hydrolysis product of ellagitannins in pomegranates, berries, grapes, green tea and nuts. Previous studies have reported the antitumor properties of EA mainly using in vitro models. No data are available about EA influence on bladder cancer cell invasion of the extracellular matrix triggered by vascular endothelial growth factor-A (VEGF-A), an angiogenic factor associated with disease progression and recurrence, and tumor growth in vivo...
November 22, 2016: Nutrients
https://www.readbyqxmd.com/read/27863907/evidence-of-epigenetic-tags-in-cardiac-fibrosis
#14
REVIEW
Vincenzo Grimaldi, Maria Rosaria De Pascale, Alberto Zullo, Andrea Soricelli, Teresa Infante, Francesco Paolo Mancini, Claudio Napoli
In cardiac fibrosis, following an injury or a stress, non-functional fibrotic tissue substitutes normal myocardium, thus leading to progressive heart failure. Activated fibroblasts are principal determinants of cardiac fibrosis by producing excessive fibrotic extracellular matrix and causing hypertrophy of cardiomyocytes. Epigenetic changes, such as DNA methylation, histone modifications, and miRNAs have been involved in these mechanisms. Therefore, there is a strong interest in reverting such epigenetic transformations in order to arrest myocardial fibrotic degeneration...
February 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/27852126/traditional-chinese-medicine-food-therapy-and-hypertension-control-a-narrative-review-of-chinese-literature
#15
REVIEW
Ping Zou
Despite the lack of English literature about Traditional Chinese Medicine (TCM) food therapy, there is abundant Chinese literature about the application of food therapy for hypertension control. This paper summarizes basic concepts of TCM, the principles of food therapy and its application for hypertension control according to Chinese literature. In TCM, food is conceptualized according to both nutritional and functional aspects, and can be used to treat illnesses. Four principles of TCM food therapy including light eating, balancing the "hot" and "cold" nature of food, the harmony of the five flavors of food, and consistency between dietary intake and different health conditions, can be used to facilitate hypertension control...
2016: American Journal of Chinese Medicine
https://www.readbyqxmd.com/read/27844057/combined-treatment-with-environmental-enrichment-and-epigallocatechin-3-gallate-ameliorates-learning-deficits-and-hippocampal-alterations-in-a-mouse-model-of-down-syndrome
#16
Silvina Catuara-Solarz, Jose Espinosa-Carrasco, Ionas Erb, Klaus Langohr, Juan Ramon Gonzalez, Cedric Notredame, Mara Dierssen
Intellectual disability in Down syndrome (DS) is accompanied by altered neuro-architecture, deficient synaptic plasticity, and excitation-inhibition imbalance in critical brain regions for learning and memory. Recently, we have demonstrated beneficial effects of a combined treatment with green tea extract containing (-)-epigallocatechin-3-gallate (EGCG) and cognitive stimulation in young adult DS individuals. Although we could reproduce the cognitive-enhancing effects in mouse models, the underlying mechanisms of these beneficial effects are unknown...
September 2016: ENeuro
https://www.readbyqxmd.com/read/27833893/thermoreversible-gel-for-intrapocket-delivery-of-green-tea-catechin-as-a-local-drug-delivery-system-an-original-research
#17
M Yuvaraja, N Raghavendra Reddy, P Mohan Kumar, K S Ravi, Nabeeh Alqahtani
The periodontal therapies along with systemic antibiotic therapy aim at eliminating the subgingival microbiota to arrest the progression of periodontal diseases. The complete elimination is often difficult, and thus the probability of repopulation after periodontal therapy is also high. The objectives of the study are to develop in situ thermoreversible gelling system of green tea catechins suitable for periodontal pocket administration, which would act as an adjunct to mechanical periodontal therapy. Gel is prepared on a weight basis using a cold process...
October 2016: Journal of Advanced Pharmaceutical Technology & Research
https://www.readbyqxmd.com/read/27815860/phase-2-trial-of-daily-oral-epigallocatechin-gallate-in-patients-with-light-chain-amyloidosis
#18
Sohsuke Meshitsuka, Sumito Shingaki, Masatoshi Hotta, Miku Goto, Makoto Kobayashi, Yuuichi Ukawa, Yuko M Sagesaka, Yasuyo Wada, Masanori Nojima, Kenshi Suzuki
Previous studies have suggested that an increase in mitochondrial reactive oxygen species may cause organ damage in patients with light-chain (AL) amyloidosis; however, this damage can be decreased by antioxidant-agent treatment. Epigallocatechin gallate (EGCG), the major natural catechin in green tea, has potent antioxidant activity. Because EGCG has recently been reported to have a favorable toxicity profile for treating amyloidosis, we sought to examine the clinical efficacy and toxicity of EGCG in patients with AL amyloidosis...
November 4, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/27771921/catechins-and-its-role-in-chronic-diseases
#19
Yohei Shirakami, Hiroyasu Sakai, Takahiro Kochi, Mitsuru Seishima, Masahito Shimizu
The mechanisms of action of polyphenols have attracted much attention. Catechins are generally known as tea polyphenols. Researchers have extensively investigated the molecular mechanisms of these substances, especially (-)-epigallocatechin gallate of green tea catechin, and have provided new insights in the prevention and therapy for chronic diseases. This chapter summarizes catechins and their effects on chronic diseases, including metabolic syndromes, cardiovascular diseases, neurodegenerative diseases, and cancer, focusing on the effects of green tea catechins...
2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27748172/herb-drug-interactions-an-insight-into-cardiovascular-diseases-based-on-case-reports
#20
Maria Campos, C Batista, N R Jesus, C M Silva, T P Silva
Cardiovascular patients frequently use herbal medicinal products, in order to contribute to the improvement of their chronic condition without medical intervention. However, they are likely to suffer from adverse effects from natural products and herb-drug interactions. This work aimed to alert cardiovascular patients and healthcare providers of the potential of occurrence of herb-drug interactions with cardiovascular therapy. Information obtained from the campaign "Aprender Saúde Entre as Plantas e os Medicamentos", carried out by the Observatory of Herb-Drug Interactions (www...
October 7, 2016: Cardiovascular & Hematological Agents in Medicinal Chemistry
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