keyword
MENU ▼
Read by QxMD icon Read
search

Flavonoids

keyword
https://www.readbyqxmd.com/read/28734206/theoretical-investigation-of-the-conformational-space-of-baicalin
#1
Juan J Martínez Medina, Evelina G Ferrer, Patricia A M Williams, Nora B Okulik
Flavonoids are a large group of polyphenolic compounds ubiquitously present in plants. They are important components of human diet. They are recognized as potential drug candidates to be used in the treatment and prevention of a lot of pathological disorders, due to their protective effects. Baicalin (7-glucuronic acid 5, 6-dihydroxyflavone) is one of the main single active constituents isolated from the dried roots of Scutellaria baicalensis Georgi. The great interest on this flavonoid is due to its various pharmacological properties, such as antioxidant, antimicrobial, anti-inflammatory, anticancer and so on, and its high accumulation in the roots of S...
July 11, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28734166/naturally-occurring-immunomodulators-with-antitumor-activity-an-insight-on-their-mechanisms-of-action
#2
REVIEW
Shimaa Ibrahim Abdelmonym Mohamed, Ibrahim Jantan, Md Areeful Haque
Natural products with immunomodulatory activity are widely used in treatment of many diseases including autoimmune diseases, inflammatory disorders in addition to cancer. They gained a great interest in the last decades as therapeutic agents since they provide inexpensive and less toxic products than the synthetic chemotherapeutic agents. Immunomodulators are the agents that have the ability to boost or suppress the host defense response that can be used as a prophylaxis as well as in combination with other therapeutic modalities...
July 19, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28732430/bee-pollen-flavonoids-as-a-therapeutic-agent-in-allergic-and-immunological-disorders
#3
Masoomeh Jannesar, Maryam Sharif Shoushtari, Ahmad Majd, Zahra Pourpak
Bee pollen grains, as the male reproductive part of seed-bearing plants contain considerable concentrations of various phytochemicals and nutrients. Since antiquity, people throughout the world used pollens to cure colds, flu, ulcers, premature aging, anemia and colitis. It is now well-documented that some bee pollen secondary metabolites (e.g. flavonoid) may have positive health effects. In recent years, the flavonoids have attracted much interest because of their wide range of biological properties and their beneficial effects on human health...
June 2017: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/28732370/silibinin-an-old-drug-for-hematological-disorders
#4
REVIEW
Hai Zou, Xing-Xing Zhu, Guo-Bing Zhang, Yuan Ma, Yi Wu, Dong-Sheng Huang
Silibinin (silybin), a non-toxic natural polyphenolic flavonoid, is the principal and the most biologically active component of silymarin. It is efficient in the treatment of acute and chronic liver disorders caused by toxins, drug, alcohol, hepatitis, and gall bladder disorders. Further, in our previous studies, we explored the anti-cancer efficacy in common cancers, such as lung, prostatic, colon, breast, bladder, as well as, hepatocellular carcinoma. Interestingly, silibinin is still not solely limited to the treatment of these diseases...
July 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28731316/phytochemical-analysis-of-myrtus-communis-plant-conventional-versus-microwave-assisted-extraction-procedures
#5
Nadia Bouaoudia-Madi, Lila Boulekbache-Makhlouf, Nabil Kadri, Farid Dahmoune, Hocine Remini, Sofiane Dairi, Sonia Oukhmanou-Bensidhoum, Khodir Madani
Background Myrtle (Myrtus communis L) may constitute an interesting dietary source of health protective compounds. Microwave-assisted extraction (MAE) of total phenolic compounds (TPC) from myrtle leaf, stems, pericarp, and seeds was studied and the results were compared with those of the conventional method extraction (CME) in terms of extraction time. Methods Extraction yield/efficiency and antioxidant activity were measured using radical scavenging assay (DPPH•) and reducing power. Results The results show that the MAE was higher in terms of saving energy, extraction time (62 s) and extraction efficiency of bioactive compound compared to CME (2 h)...
June 10, 2017: Journal of Complementary & Integrative Medicine
https://www.readbyqxmd.com/read/28731287/tricetin-suppresses-human-oral-cancer-cell-migration-by-reducing-matrix-metalloproteinase-9-expression-through-the-mitogen-activated-protein-kinase-signaling-pathway
#6
Tsung-Te Chung, Chun-Yi Chuang, Ying-Hock Teng, Ming-Ju Hsieh, Ji-Ching Lai, Yi-Ting Chuang, Mu-Kuan Chen, Shun-Fa Yang
Tricetin is a flavonoid derivative and a potent anti-inflammatory and anticancer agent. However, the molecular mechanism underlying the effects of tricetin on human oral cancer cell migration remains unclear. The cell migration and invasion abilities of three oral cancer cell lines (SCC-9, HSC-3, and OECM-1) were analyzed using Boyden chamber migration assays. Our results demonstrated that tricetin attenuates 12-O-tetradecanoylphorbol-13-acetate-induced SCC-9, HSC-3, and OECM-1 cell invasiveness and migration by reducing matrix metalloproteinase (MMP)-9 enzyme activity...
July 21, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28731170/isorhamnetin-inhibits-il%C3%A2-1%C3%AE-%C3%A2-induced-expression-of-inflammatory-mediators-in-human-chondrocytes
#7
Jin Li, Ruishan Wu, Xiaoping Qin, Dongyang Liu, Fenjie Lin, Qinglu Feng
Isorhamnetin (ISH) is a flavonoid primarily obtained from the fruit of Hippophae rhamnoides L., which possesses anti‑inflammatory properties. However, the effect of ISH on the expression of inflammatory mediators in response to interleukin (IL)‑1β stimulation has not been elucidated. The present study investigated the effects of ISH on the expression of inflammatory mediators in human chondrocytes, induced by IL‑1β. The results of the present study demonstrated that pretreatment with ISH inhibited the expression of stromelysin‑1 and collagenase 3 in chondrocytes, induced by IL‑1β...
July 20, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28730980/validation-of-spectrophotometric-methods-for-the-determination-of-total-polyphenol-and-total-flavonoid-content
#8
Petra Matić, Marija Sabljić, Lidija Jakobek
The aim of this study was to validate spectrophotometric methods for the measurement of total polyphenol (TP;via the Folin–Ciocalteu method) and total flavonoid (TF) content [via the aluminum chloride (AlCl₃) method]. Validation parameters of these methods were determined, including linearity, sensitivity, precision (intra-assay and intermediate), accuracy, LOD, and LOQ. For the validation process, groups of polyphenol standards were used, including phenolic acids (gallic, p-coumaric, caffeic, and chlorogenic acids), flavan-3-ols [(+)-catechin and procyanidins B1 and B2], flavonols (quercetin and quercetin-3-rutinoside), and dihydrochalcones (phloretin and phloretin-2-glucoside)...
July 20, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28730309/a-simple-and-rapid-infrared-assisted-self-enzymolysis-extraction-method-for-total-flavonoid-aglycones-extraction-from-scutellariae-radix-and-mechanism-exploration
#9
Liping Wang, Haotian Duan, Jiebing Jiang, Jiakun Long, Yingjia Yu, Guiliang Chen, Gengli Duan
A new, simple, and fast infrared-assisted self enzymolysis extraction (IRASEE) approach for the extraction of total flavonoid aglycones (TFA) mainly including baicalein, wogonin, and oroxylin A from Scutellariae Radix is presented to enhance extraction yield. Extraction enzymolysis temperature, enzymolysis liquid-to-solid ratio, enzymolysis pH, enzymolysis time and infrared power, the factors affecting IRASEE procedure, were investigated in a newly designed, temperature-controlled infrared-assisted extraction (TC-IRAE) system to acquire the optimum analysis conditions...
July 20, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28729836/an-overview-of-herbal-products-and-secondary-metabolites-used-for-management-of-type-two-diabetes
#10
REVIEW
Ajda Ota, Nataša P Ulrih
Diabetes mellitus is a common effect of uncontrolled high blood sugar and it is associated with long-term damage, dysfunction, and failure of various organs. In the adult population, the global prevalence of diabetes has nearly doubled since 1980. Without effective prevention and management programs, the continuing significant rise in diabetes will have grave consequences on the health and lifespan of the world population, and also on the world economy. Supplements can be used to correct nutritional deficiencies or to maintain an adequate intake of certain nutrients...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28729835/uplc-esi-ms-ms-and-hptlc-method-for-quantitative-estimation-of-cytotoxic-glycosides-and-aglycone-in-bioactivity-guided-fractions-of-solanum-nigrum-l
#11
Karishma Chester, Sarvesh Paliwal, Washim Khan, Sayeed Ahmad
Solanum nigrum L., is traditionally used for the management of the various liver disorders. Investigating the effect of polarity based fractionation of S. nigrum for its hepatoprotective effect on Hep G2 cells in vitro to provide base of its activity by quantifying in steroidal glycosides responsible for hepatoprotective potential. A new UPLC-ESI-MS/MS method following a high performance thin layer chromatography (HPTLC) has been developed and validated for quantification of steroidal glycosides and aglycone (solasonine, solamargine, and solasodine, respectively)...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28728925/potential-anti-cancer-activity-of-7-o-pentyl-quercetin-efficient-membrane-targeted-kinase-inhibition-and-pro-oxidant-effect
#12
Nicola Sassi, Andrea Mattarei, Virginia Espina, Lance Liotta, Mario Zoratti, Cristina Paradisi, Lucia Biasutto
Quercetin is a redox-active plant-derived flavonoid with potential anticancer effects, stemming largely from its interaction with a number of proteins, and in particular from inhibition of pro-life kinases. To improve efficacy, we reasoned that a local increase in concentration of the compound at the level of cell membranes would result in a more efficient interaction with membrane-associated signaling kinases. We report here the synthesis of all five isomeric quercetin derivatives in which an n-pentyl group was linked via an ether bond to each hydroxyl of the flavonoid kernel...
July 17, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28728492/the-bioactivity-of-hedysarum-coronarium-extracts-on-skin-enzymes-and-cells-correlates-with-phenolic-content
#13
Bruno Burlando, Giulia Pastorino, Annalisa Salis, Gianluca Damonte, Marco Clericuzio, Laura Cornara
CONTEXT: The search for bioactive compounds from botanical sources is attracting much interest. However, differences in chemical composition may occur within the same species depending on different geographical origins. OBJECTIVES: We evaluated the properties on skin enzymes and cells of extracts from sulla legume crop Hedysarum coronarium L. (Fabaceae), collected at two Italian sites near Pisa and Ventimiglia, for possible dermatological and cosmetic applications...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28728357/effects-of-dietary-alfalfa-flavonoids-on-the-performance-meat-quality-and-lipid-oxidation-of-growing-rabbits
#14
Sihem Dabbou, Laura Gasco, Luca Rotolo, Luisa Pozzo, Jian Ming Tong, Xiao Fang Dong, Patrizia Rubiolo, Achille Schiavone, Francesco Gai
Objective: The present experiment has tested the effect of the dietary alfalfa flavonoids (AAF) supplementation on the productive performances, carcass characteristics,meat quality and lipid oxidation of growing rabbits. Methods: One hundred and sixty crossbred rabbits (42 days old) were divided into four groups of forty animals each and were fed either acontrol diet (AAF0) or an AAF0 diet supplemented with 400, 800 or 1200 mg of AAF/kg per diet (AAF4,AAF8 and AAF12, respectively) from weaning to slaughtering (102days old)...
June 27, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28726775/oroxylin-a-activates-pkm1-hnf4-alpha-to-induce-hepatoma-differentiation-and-block-cancer-progression
#15
Libin Wei, Yuanyuan Dai, Yuxin Zhou, Zihao He, Jingyue Yao, Li Zhao, Qinglong Guo, Lin Yang
Liver cancer is the second cause of death from cancer worldwide, without effective treatment. Traditional chemotherapy for liver cancer has big side effects for patients, whereas targeted drugs, such as sorafenib, commonly have drug resistance. Oroxylin A (OA) is the main bioactive flavonoids of Scutellariae radix, which has strong anti-hepatoma effect but low toxicity to normal tissue. To date, no differentiation-inducing agents have been reported to exert a curative effect on solid tumors. Here our results demonstrated that OA restrained the proliferation and induced differentiation of hepatoma both in vitro and in vivo, via inducing a high PKM1 (pyruvate kinase M1)/PKM2 (pyruvate kinase M2) ratio...
July 20, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28726396/the-potent-anti-inflammatory-and-anti-adipogenic-properties-of-bamboo-sasa-coreana-nakai-leaves-extract-and-its-major-constituent-flavonoids
#16
Ji Hye Yang, Moon-Hee Choi, Seung Hwa Yang, Sam Seok Cho, Su Jung Park, Hyun-Jae Shin, Sung Hwan Ki
The pro-inflammatory response and recruitment of macrophages into adipose tissue contribute to metabolic dysfunction. Here, we reported the anti-inflammatory and anti-adipogenic effects of the methanol (MeOH) extract and ethylacetate (EtOAc) fraction of bamboo leaf and its molecular mechanism in RAW264.7 cells and 3T3-L1 adipocytes, respectively. Functional macrophage migration assays also were performed. Surprisingly, EtOAc fraction of MeOH extracts from native Korean plant species Sasa coreana Nakai (SCN) has shown potent anti-inflammatory properties; SCN pretreatment inhibited nitric oxide (NO) production (p<0...
July 20, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28726198/anti-inflammatory-and-analgesic-activities-of-the-complex-of-flavonoids-from-lychnis-chalcedonica-l
#17
Yu V Nesterova, T N Povet'eva, L N Zibareva, N I Suslov, E P Zueva, S G Aksinenko, O G Afanas'eva, S G Krylova, E N Amosova, O Yu Rybalkina, K A Lopatina
Anti-inflammatory and analgesic activities of the complex of flavonoids from Lychnis chalcedonica L. were studied in the models of acute aseptic inflammation induced by carrageenan, histamine, and serotonin and acetic acid-induced painful chemical stimulation. It is demonstrated that course treatment with flavonoids derived from Lychnis chalcedonica L. produced a stable pharmacological effect comparable with that of the reference anti-inflammatory drug diclofenac.
July 18, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28725626/evaluation-of-anticancer-activity-of-cordia-dichotoma-leaves-against-a-human-prostate-carcinoma-cell-line-pc3
#18
Md Azizur Rahman, Sahabjada, Juber Akhtar
Mechanisms of antioxidant and apoptosis induction may be involved in the management of cancer by medicinal plants. Aim of the study was designed to evaluate anticancer activity of the methanolic extract of Cordia dichotoma leaves (MECD) against a human prostate carcinoma cell line, PC3. Flavonoid content was determined by colorimetric principle and antioxidant activity by various in vitro assays. MTT, DCFH-DA and DAPI staining assays were performed for the evaluation of cytotoxicity, analysis of induction of apoptosis and intracellular reactive oxygen species (ROS) activity level by MECD against human prostate carcinoma cell line, PC3...
July 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/28725625/evaluation-of-effect-of-alcoholic-extract-of-heartwood-of-pterocarpus-marsupium-on-in%C3%A2-vitro-antioxidant-anti-glycation-sorbitol-accumulation-and-inhibition-of-aldose-reductase-activity
#19
Pankaj Gupta, Vivek Jain, Ashutosh Pareek, Preeti Kumari, Randhir Singh, Priyanka Agarwal, Veena Sharma
Rising popularity of phytomedicines in various diseased conditions have strengthened the significance of plant-research and evaluation of phytoextracts in clinical manifestations. Pterocarpus marsupium Roxb., a medicinal plant, known for its anti-oxidant and anti-diabetic activity is a rich source of phytochemicals with antihyperglycemic and antihyperlipidemic activities. However, its possible role in diabetic complications is not evaluated yet. The present study explores the possible role of alcoholic extract of heartwood of P...
July 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/28725146/lc-esi-ms-ms-profiling-of-phenolics-from-eleutherococcus-spp-inflorescences-structure-activity-relationship-as-antioxidants-inhibitors-of-hyaluronidase-and-acetylcholinesterase
#20
Daniel Załuski, Marta Olech, Rafał Kuźniewski, Robert Verpoorte, Renata Nowak, Helena D Smolarz
Nature is a source of many plant-based molecules used as pro- or drugs. Eleutherococcus species are native to Asia and the North Russia, and are traditionally used to treat various diseases. In turn, neither secondary metabolites of the species cultivated in the West Europe nor the bioactivity is known. No differences in the phenols and flavonoids content in the inflorescences were found. The richest in polyphenols was E. giraldii (5.18 mg/g), while in flavonoids it was E. gracilistylus (1.80 mg/g). Using LC-ESI-MS/MS, protocatechuic and trans-caffeic acids have been identified as the most abundant compounds in E...
July 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
keyword
keyword
4689
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"