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https://www.readbyqxmd.com/read/28945000/rosmarinic-acid-down-regulates-no-and-pge2-expression-via-mapk-pathway-in-rat-chondrocytes
#1
We-Ping Chen, Guo-Jun Jin, Yan Xiong, Peng-Fei Hu, Jia-Peng Bao, Li-Dong Wu
Rosmarinic acid (RosA) is a water-soluble polyphenol, which can be isolated from many herbs such as orthosiphon diffuses and rosmarinus officinalis. Previous studies have shown that RosA possesses various biological properties. In this study, we investigate the anti-osteoarthritic effects of RosA in rat articular chondrocytes. Chondrocytes were pre-treated with RosA, followed by the stimulation of IL-1β. Real-time PCR and Western blot were performed to detect the expression of matrix metalloproteinase (MMP)-1, MMP-3 and MMP-13...
September 25, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28944599/resveratrol-suppresses-the-alveolar-bone-resorption-induced-by-artificial-trauma-from-occlusion-in-mice
#2
Y Matsuda, T Minagawa, T Okui, K Yamazaki
OBJECTIVE: Besides inflammatory bone loss, trauma from occlusion (TO)-induced alveolar bone loss increases the risk of future tooth loss. We have shown that resveratrol, a polyphenol, possesses anti-inflammatory characteristics and a suppressive effect on osteoclastogenesis. Therefore, we investigated the effects of resveratrol on TO-induced bone loss in mice. MATERIAL AND METHODS: TO was induced by overlaying composite resin onto the maxillary first molar of C57BL/6 mice...
September 25, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28943769/effect-of-lactic-acid-bacteria-fermented-mulberry-leaf-extract-on-the-improvement-of-intestinal-function-in-rats
#3
Hyun-Joo Lee, Hwan Lee, Yang-Il Choi, Jae-Joon Lee
This study examined the laxative effects of mulberry leaf extract (MLE) fermented by lactic acid bacteria (LAB), which contains high levels of polyphenolic and flavonoid compounds, against loperamide-induced constipation in rats. Sprague-Dawley rats were divided into a normal group (N) and three experimental groups; loperamide treated group (C), loperamide and LAB-fermented MLE 300 mg/kg treated group (MLEL), and loperamide and LAB-fermented MLE 600 mg/kg treated group (MLEH). After 33 d, fecal pellet amount, fecal weight, water content of fecal, gastrointestinal transit time and length, and serum lipid profiles were measured...
2017: Korean Journal for Food Science of Animal Resources
https://www.readbyqxmd.com/read/28943490/the-curcumin-induced-vasorelaxation-in-rat-superior-mesenteric-arteries
#4
Han Zhang, Huanhuan Liu, Yulong Chen, Yan Zhang
BACKGROUND: Curcumin (Cur) is a natural lipophilic polyphenol compound extracted from the rhizome of turmeric. Recently, protective effect of Cur on cardiovascular system is pay close attention. Some researches demonstrated that Cur could induce vascular relaxation in many arterial beds. However, relaxant effect of Cur on rat superior mesenteric artery is not clear. OBJECTIVE: The present study will investigate the vasorelaxant effect of Cur on rat superior mesenteric arteries and the mechanisms involved...
September 21, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28943387/cytotoxicity-genotoxicity-and-gene-expression-changes-elicited-by-exposure-of-human-hepatic-cells-to-ginkgo-biloba-leaf-extract
#5
Maria Giuseppa Grollino, Giuseppe Raschellà, Eugenia Cordelli, Paola Villani, Marco Pieraccioli, Irene Paximadas, Salvatore Malandrino, Stefano Bonassi, Francesca Pacchierotti
The use of Ginkgo biloba leaf extract as nutraceutical is becoming increasingly common. As a consequence, the definition of a reliable toxicological profile is a priority for its safe utilization. Recently, contrasting data have been reported on the carcinogenic potential of Ginkgo biloba extract in rodent liver. We measured viability, Reactive Oxygen Species (ROS), apoptosis, colony-forming efficiency, genotoxicity by comet assay, and gene expression changes associated with hepato-carcinogenicity in human cells of hepatic origin (HepG2 and THLE-2) treated with different concentrations (0...
September 21, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28942726/screening-of-plant-resources-with-anti-ice-nucleation-activity-for-frost-damage-prevention
#6
Shingo Suzuki, Satoshi Fukuda, Yukiharu Fukushi, Keita Arakawa
Previous studies have shown that some polyphenols have anti-ice nucleation activity (anti-INA) against ice-nucleating bacteria that contribute to frost damage. In the present study, leaf disk freezing assay, a test of in vitro application to plant leaves, was performed for the screening of anti-INA, which inhibits the ice nucleation activity of an ice-nucleating bacterium Erwinia ananas in water droplets on the leaf surfaces. The application of polyphenols with anti-INA, kaempferol 7-O-β-glucoside and (-)-epigallocatechin gallate, to the leaf disk freezing assay by cooling at -4--6 °C for 3 h, revealed that both the compounds showed anti-INAs against E...
September 25, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/28942652/polyphenols-from-blossoms-of-citrus-aurantium-l-var-amara-engl-show-significant-anti-complement-and-anti-inflammatory-effects
#7
Chun-Yan Shen, Jian-Guo Jiang, Chun-Ling Huang, Wei Zhu, Chao-Yang Zheng
Citrus aurantium L. var. amara Engl. (CAVA) was traditionally used as a digestant or expectorant in China. Crude polyphenols (CAVAP-W) extracted from blossoms of CAVA were mainly composed of eriocitrin/neoeriocitrin, eriocitrin/neoeriocitrin, rhoifolin, hesperidin, naringin, rutin, veronicastroside, neohesperidin and hesperetin by LC-MS analysis. CAVAP-W showed significant anti-complement and anti-inflammatory effects. Due to the close relationship between anti-complement and anti-inflammatory activity, the anti-inflammatory effect was further investigated and the results showed that CAVAP-W significantly suppressed production of interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-α), interleukin-1beta (IL-1β), and mRNA expression of inducible nitric oxide synthase (iNOS), IL-6, TNF-α, IL-1β and cyclooxygenase-2 (COX-2) in lipopolysaccharides-stimulated RAW264...
September 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28942133/bush-mint-hyptis-suaveolens-and-spreading-hogweed-boerhavia-diffusa-medicinal-plant-extracts-differentially-affect-activities-of-cyp1a2-cyp2d6-and-cyp3a4-enzymes
#8
Nicholas Ekow Thomford, Kevin Dzobo, Faustina Adu, Shadreck Chirikure, Ambroise Wonkam, Collet Dandara
ETHNO-PHARMACOLOGICAL RELEVANCE: Hyptis suaveolens (L) Poit and Boerhavia diffusa Linn are medicinal herbal plants commonly found in the tropics and sub-tropics. They are used to treat various conditions among them boils, dyslipidaemia, eczema, malaria, jaundice and gonorrhoea. Thus, the herbal medicinal extracts are now found as part of some commercial herbal formulations. There has not been adequate characterisation of these medicinal herbs on their effects on drug metabolising enzymes...
September 20, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28941474/resolving-inflammation-by-targeting-an-ancient-innate-immune-sensor-with-a-bacterial-metabolite
#9
Andrew Johnston
Bacterial, fungal, and plant metabolites are promising sources of small molecules for drug discovery. Smith et al. show that tapinarof, a bacteria-derived polyphenol, is an aryl hydrocarbon receptor ligand that attenuated inflammatory responses and shows therapeutic potential for inflammatory skin diseases. This work adds to the growing literature stemming from the renewed interest in the discovery and development of novel small molecules with anti-inflammatory activity.
October 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28939421/theaflavin-ameliorates-ionizing-radiation-induced-hematopoietic-injury-via-the-nrf2-pathway
#10
Xiaodan Han, Junling Zhang, Xiaolei Xue, Yu Zhao, Lu Lu, Ming Cui, Weimin Miao, Saijun Fan
It has been well established that reactive oxygen species (ROS) play a critical role in ionizing radiation (IR)-induced hematopoietic injury. Theaflavin (TF), a polyphenolic compound from black tea, has been implicated in the regulation of endogenous cellular antioxidant systems. However, it remains unclear whether TF could ameliorate IR-induced hematopoietic injury, particularly the hematopoietic stem cell (HSC) injury. In this study, we explored the potential role of TF in IR-induced HSC injury and the underlying mechanism in a total body irradiation (TBI) mouse model...
September 19, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28938517/green-tea-camellia-sinensis-and-l-theanine-medicinal-values-and-beneficial-applications-in-humans-a-comprehensive-review
#11
REVIEW
Muhammad Saeed, Muhammad Naveed, Muhammad Arif, Mohib Ullah Kakar, Robina Manzoor, Mohamed Ezzat Abd El-Hack, Mahmoud Alagawany, Ruchi Tiwari, Rekha Khandia, Ashok Munjal, Kumaragurubaran Karthik, Kuldeep Dhama, Hafiz M N Iqbal, Maryam Dadar, Chao Sun
Green tea (Camellia sinensis) is a famous herb, and its extract has been extensively used in traditional Chinese medicinal system. In this context, several studies have revealed its health benefits and medicinal potentialities for several ailments. With ever increasing scientific knowledge, search for safer, potential and novel type of health-related supplements quest, scientists are re-directing their research interests to explore natural resources i.e. medicinal herbs/plant derived compounds. Green tea consumption has gained a special attention and popularity in the modern era of changing lifestyle...
September 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28938495/polyphenol-enriched-fractions-of-cyclopia-intermedia-selectively-affect-lipogenesis-and-lipolysis-in-3t3-l1-adipocytes
#12
Babalwa U Jack, Christiaan J Malherbe, Elize L Willenburg, Dalene de Beer, Barbara Huisamen, Elizabeth Joubert, Christo J F Muller, Johan Louw, Carmen Pheiffer
Cyclopia species are increasingly investigated as sources of phenolic compounds with potential as therapeutic agents. Recently, we demonstrated that a crude polyphenol-enriched organic fraction (CPEF) of Cyclopia intermedia, currently forming the bulk of commercial production, decreased lipid content in 3T3-L1 adipocytes and inhibited body weight gain in obese db/db mice. The aim of the present study was to determine whether a more effective product and/or one with higher specificity could be obtained by fractionation of the CPEF by purposely increasing xanthone and benzophenone levels...
September 22, 2017: Planta Medica
https://www.readbyqxmd.com/read/28937798/dual-effects-of-resveratrol-on-cell-death-and-proliferation-of-colon-cancer-cells
#13
Álvaro San Hipólito-Luengo, Antonio Alcaide, Mariella Ramos-González, Elena Cercas, Susana Vallejo, Alejandra Romero, Elena Talero, Carlos F Sánchez-Ferrer, Virginia Motilva, Concepción Peiró
Colorectal cancer remains a main cause of deaths worldwide, and novel agents are being searched to treat this disease. Polyphenols have emerged as promising therapeutic tools in cancer. Resveratrol (3,5,4'-trihydoxy-trans-stilbene) induces cell death in different tumor cell lines, and it also stimulates the proliferation of specific breast and prostate cancer cell lines. Here, we studied the impact of resveratrol over a 100-fold concentration range on cell death and proliferation of HT-29 colorectal adenocarcinoma cells...
September 22, 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/28937626/aspalathin-reverts-doxorubicin-induced-cardiotoxicity-through-increased-autophagy-and-decreased-expression-of-p53-mtor-p62-signaling
#14
Rabia Johnson, Samukelisiwe Shabalala, Johan Louw, Abidemi Paul Kappo, Christo John Frederick Muller
Doxorubicin (Dox) is an effective chemotherapeutic agent used in the treatment of various cancers. Its clinical use is often limited due to its potentially fatal cardiotoxic side effect. Increasing evidence indicates that tumour protein p53 (p53), adenosine monophosphate-activated protein kinase (AMPK), nucleoporin p62 (p62), and the mammalian target of rapamycin (mTOR) are critical mediators of Dox-induced apoptosis, and subsequent dysregulation of autophagy. Aspalathin, a polyphenolic dihydrochalcone C-glucoside has been shown to activate AMPK while decreasing the expression of p53...
September 22, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28936721/a-novel-resveratrol-derivative-selectively-inhibits-the-proliferation-of-colorectal-cancer-cells-with-kras-mutation
#15
Haruna Okamoto, Taiji Matsukawa, Satoshi Doi, Toshiyuki Tsunoda, Yuuga Sawata, Madoka Naemura, Koichiro Ohnuki, Senji Shirasawa, Yojiro Kotake
Resveratrol is a polyphenolic compound in many edible foods including grapes, peanuts, and berries. Several studies have revealed the beneficial effects of resveratrol against various diseases such as heart disease, diabetes, obesity, neurological disorders, and cancer. A recent study showed that resveratrol inhibits the proliferation of HCT116 human colorectal cancer cells in three-dimensional culture (3DC) via induction of luminal apoptosis in HCT116 cell spheroids. In this study, we showed that a novel compound, caffeic acid-adducted resveratrol, has a stronger inhibitory effect on the growth of HCT116 cell spheroids in 3DC than resveratrol...
September 21, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28935809/intake-of-chocolate-liquor-increases-vascular-lesions-in-apoe-knockout-mice
#16
Narges Yazdekhasti, Corinna Brandsch, Frank Hirche, Julia Kühn, Anke Schloesser, Tuba Esatbeygolu, Patricia Huebbe, Sigfried Wolffram, Gerald Rimbach, Gabriele I Stangl
Cocoa polyphenols are thought to reduce the risk of cardiovascular diseases. Thus, cocoa-containing foods may have significant health benefits. Here, we studied the impact of chocolate liquor on vascular lesion development and plaque composition in a mouse model of atherosclerosis. Apolipoprotein E (apoE)-knockout mice were assigned to two groups and fed a Western diet that contained 250 g/kg of either chocolate liquor or a polyphenol-free isoenergetic control paste for 16 weeks. In addition to fat, protein and fibers, the chocolate liquor contained 2 g/kg of polyphenols...
September 21, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28935150/mediterranean-diet-and-colorectal-cancer-a-systematic-review
#17
REVIEW
Alberto Farinetti, Valeria Zurlo, Antonio Manenti, Francesca Coppi, Anna Vittoria Mattioli
Colorectal cancer is the third most common cancer worldwide, especially in developed countries where an estimated 60% of all cases occur. There is evidence of a higher risk for CRC in Western society, where people tend to eat more red and processed meat than those living along the Mediterranean coast, who have a decreased overall cancer mortality, which is correlated to their eating habits, such as Mediterranean diet. The aim of this review was to evaluate the correlation between three components of the Mediterranean diet (olive oil, red wine, and tomatoes) and incidence and progression of colorectal cancer...
November 2017: Nutrition
https://www.readbyqxmd.com/read/28935149/molecular-aspects-of-cancer-chemopreventive-and-therapeutic-efficacies-of-tea-and-tea-polyphenols
#18
REVIEW
Subhayan Sur, Chinmay Kumar Panda
The natural dietary product tea (Camellia sinensis) and its bioactive polyphenols such as epigallocatechin gallate (EGCG) and theaflavin (TF) demonstrated potential anticancer effects in different preclinical and clinical studies. The aim of the present review was to understand the molecular mechanisms of the tea and tea polyphenol-mediated cancer prevention and therapy. In the setting of in vivo cancer prevention studies, administration of the tea and tea polyphenols at preinitiation stages only showed partial prevention, whereas continuous administration showed potential effect in restriction of carcinogenesis in the body's multiple organs at early premalignant stages throughout the experiment...
November 2017: Nutrition
https://www.readbyqxmd.com/read/28935146/effect-of-chocolate-and-mate-tea-on-the-lipid-profile-of-individuals-with-hiv-aids-on-antiretroviral-therapy-a-clinical-trial
#19
Suelen J Souza, Aline A Petrilli, Andrea M Teixeira, Patricia M Pontilho, Antonio A Carioca, Liania A Luzia, José M Souza, Nágila R Damasceno, Aluisio A Segurado, Patricia H Rondó
OBJECTIVE: HIV/AIDS is generally associated with dyslipidemia and oxidative imbalance, which are caused by the infection itself and by antiretroviral therapy (ART). The flavonoids, found in cocoa and yerba mate, have antioxidant and hypolipidemic properties. The aim of this study was to evaluate the effects of the consumption of dark chocolate and mate tea on the lipid profiles of individuals with HIV/AIDS who are undergoing ART. METHODS: A randomized, double-blind, placebo-controlled crossover clinical trial was conducted with 92 patients receiving ART for ≥6 mo and with viral suppression...
November 2017: Nutrition
https://www.readbyqxmd.com/read/28934870/a-bioanalytical-approach-of-chemical-composition-bioactivity-and-cytotoxicity-of-berteroa-incana-l-herb
#20
Oana Ungureanu, Florentina Gatea, Ana Maria Seciu, Eugenia Dumitra Teodor, Isabela Madalina Nicorescu, Gabriel Lucian Radu
Berteroa incana is a wild herb widespread in temperate zones which was practically not studied for its biological effects. Methanolic and aqueous extracts of B. incana were assessed for the content in polyphenols and the related antioxidant and antimicrobial activities and the polysaccharide extract for the content in saccharides and the associated cytostatic effect. The results obtained highlighted that the methanolic extracts of B. incana contain moderate amounts of polyphenols, the most representative been isoquercitrin 4...
September 21, 2017: Natural Product Research
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