keyword
MENU ▼
Read by QxMD icon Read
search

flavonoid

keyword
https://www.readbyqxmd.com/read/28538688/in-silico-study-and-bioprospection-of-the-antibacterial-and-antioxidant-effects-of-flavone-and-its-hydroxylated-derivatives
#1
Camila de Albuquerque Montenegro, Gregório Fernandes Gonçalves, Abrahão Alves de Oliveira Filho, Andressa Brito Lira, Thays Thyara Mendes Cassiano, Natanael Teles Ramos de Lima, José Maria Barbosa-Filho, Margareth de Fátima Formiga Melo Diniz, Hilzeth Luna Freire Pessôa
Flavonoid compounds are widely used as natural protective species, which can act as anti-inflammatory, antioxidant, anticoagulant, antihypertensive and antitumor agents. This study set out to investigate the probable pharmacological activities, along with the antibacterial and antioxidant effects, of flavone and its hydroxy derivatives: 3-hydroxyflavone, 5-hydroxyflavone and 6-hydroxyflavone. To do so, we investigated their pharmacological characteristics, using in silico tests that indicate likelihood of activity or inactivity, with the PASS online software, and the antimicrobial potential against Gram positive and Gram negative bacteria was also analyzed, including bacteria of clinical importance...
May 24, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28535611/sea-buckthorn-hippophae-rhamnoides-l-leaf-extracts-protect-neuronal-pc-12-cells-from-oxidative-stress
#2
Chi Heung Cho, Ho Lim Jang, Migi Lee, Hee Kang, Ho Jjn Heo, Dae-Ok Kim
The present study was carried out to investigate the antioxidative and neuroprotective effects of sea buckthorn (Hippophae rhamnoides L.) leaves (SBL) harvested at different times. Reversed-phase high-performance liquid chromatography analysis revealed five major phenolic compounds: ellagic acid, gallic acid, isorhamnetin, kaempferol, and quercetin. SBL harvested in August had the highest total phenolic and flavonoid contents and antioxidant capacity. Treatment of neuronal PC-12 cells with the ethyl acetate fraction of SBL harvested in August in increased their viability and membrane integrity and reduced intracellular oxidative stress in a dose-dependent manner...
May 24, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28535111/relative-validity-and-reproducibility-of-an-interviewer-administered-14-item-ffq-to-estimate-flavonoid-intake-among-older-adults-with-mild-moderate-dementia
#3
Katherine Kent, Karen Charlton
There is a large burden on researchers and participants when attempting to accurately measure dietary flavonoid intake using dietary assessment. Minimizing participant and researcher burden when collecting dietary data may improve the validity of the results, especially in older adults with cognitive impairment. A short 14-item food frequency questionnaire (FFQ) to measure flavonoid intake, and flavonoid subclasses (anthocyanins, flavan-3-ols, flavones, flavonols, and flavanones) was developed and assessed for validity and reproducibility against a 24-hour recall...
May 23, 2017: Journal of Nutrition in Gerontology and Geriatrics
https://www.readbyqxmd.com/read/28534695/wound-healing-activity-of-pluchea-indica-leaf-extract-in-oral-mucosal-cell-line-and-oral-spray-formulation-containing-nanoparticles-of-the-extract
#4
Wiphupat Buranasukhon, Sirivan Athikomkulchai, Sarin Tadtong, Chuda Chittasupho
CONTEXT: Pluchea indica (L.) Less (Asteraceae) is an herb used as a traditional medicine for wound healing. The chemical compounds found in Pluchea indica leaves are phenolic acids, flavonoids, anthocyanins and carotenoids. OBJECTIVE: This study investigates the effect of Pluchea indica leaf ethanol extract and its nanoparticles (NPs) on cytotoxicity, cell survival and migration of human oral squamous carcinoma cell line. MATERIALS AND METHODS: Cell viability was measured using MTT assay to assess the effect of Pluchea indica leaf extract and NPs (1-500 μg/mL) on cytotoxicity and cell survival...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28534405/tissue-distribution-excretion-and-metabolic-profile-of-dihydromyricetin-a-flavonoid-from-vine-tea-ampelopsis-grossedentata-after-oral-administration-in-rats
#5
Li Fan, Qing Tong, Weiwei Dong, Guangjie Yang, Xiaolong Hou, Wei Xiong, Chunyang Shi, Jianguo Fang, Wenqing Wang
Dihydromyricetin (DMY), a flavanonol compound found as the most abundant and bioactive constituent in vine tea (Ampelopsis grossedentata), possesses numerous biological activities. In the present study, a HPLC-MS/MS method for the determination of DMY in tissues, urine and feces was developed and applied to the tissue distribution and excretion study after oral administration in rats, and the metabolic profile of DMY was further investigated using UPLC-QTOF-MS. The results indicated that DMY could be distributed rapidly in various tissues and highly in gastrointestinal tract...
May 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28533962/dietary-flavonoids-of-spanish-youth-intakes-sources-and-association-with-the-mediterranean-diet
#6
Rowaedh Ahmed Bawaked, Helmut Schröder, Lourdes Ribas Barba, Gabriela Cárdenas, Luis Peña-Quintana, Carmen Pérez Rodrigo, Montserrat Fíto, Lluis Serra Majem
BACKGROUND: Plant-based diets have been linked to high diet quality and reduced risk of cardiovascular diseases. The health impact of plant-based diets might be partially explained by the concomitant intake of flavonoids. Estimation of flavonoids intake in adults has been important for the development of dietary recommendations and interventions for the prevention of weight gain and its consequences. However, estimation of flavonoids intake in children and adolescents is limited. METHODS: Average daily intake and sources of flavonoids were estimated for a representative national sample of 3,534 children and young people in Spain, aged 2-24 years...
2017: PeerJ
https://www.readbyqxmd.com/read/28533927/antioxidant-and-anti-inflammatory-medicinal-plants-have-potential-role-in-the-treatment-of-cardiovascular-disease-a-review
#7
REVIEW
Peter Adegbola, Ifewumi Aderibigbe, Wasiu Hammed, Tolulope Omotayo
Cardiovascular disease is a compound name for clusters of disorders afflicting the heart and blood vessels; it is assuming an increasing role as a major cause of morbidity and mortality. Unhealthy practices such as smoking, high intake of saturated fat and cholesterol, diabetes and physical inactivity are predisposing factors. The risk factors cause alteration in vascular integrity, compromised membrane integrity, increase free radical generation and reduced endogenous antioxidant system resulting in oxidative stress...
2017: American Journal of Cardiovascular Disease
https://www.readbyqxmd.com/read/28533813/rapid-identification-of-growth-years-and-profiling-of-bioactive-ingredients-in-astragalus-membranaceus-var-mongholicus-huangqi-roots-from-hunyuan-shanxi
#8
Hua-Sheng Peng, Jun Wang, He-Ting Zhang, Hai-Yan Duan, Xiao-Mei Xie, Ling Zhang, Ming-En Cheng, Dai-Yin Peng
BACKGROUND: The content of medicinal bioactive constituents in huangqi is affected by plant age. In this study, we devised a quick and convenient method for determining the age of huangqi, which was cultivated in Hunyuan County (Shanxi Province). METHODS: 1, 2, 3, 4, 5, 8, 10 growth years huangqi had 38 samples, all samples were collected separately. The growth rings in these samples were observed after making paraffin section and freehand-section. The relationship between growth rings and its growth years was analyzed by SPSS 19...
2017: Chinese Medicine
https://www.readbyqxmd.com/read/28532120/ultra-small-silver-nanoparticles-induced-ros-activated-toll-pathway-against-staphylococcus-aureus-disease-in-silkworm-model
#9
Pala Rajasekharreddy, Pathipati Usha Rani, Saidulu Mattapally, Sanjay Kumar Banerjee
The present study investigated the therapeutic action of flavonoids loaded silver nanoparticles (FLV-Ag NPs) on a silkworm, Bombyx mori L., larvae infected by the S. aureus, where an in vivo model system was used. FLV-Ag NPs were synthesized using a Ricinus communis L. leaf extracted flavonoid mixture in various concentrations. The reduction reaction was performed under a simple sunlight exposure condition. In the reduction process, quercetin and kaempferol loadings were also found. They were confirmed by UV-visible, TEM, XRD, XPS, DLS and FTIR spectroscopic techniques...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532071/in-vitro-antibacterial-and-cytotoxic-activities-of-plasma-modified-polyethylene-terephthalate-nonwoven-dressing-with-aqueous-extract-of-rhizome-atractylodes-macrocephala
#10
Yi-Ting Shu, Kuo-Ting Kao, Ching-Sung Weng
In this study, a natural and non-cytotoxic antibacterial dressing containing aqueous extract of Rhizome Atractylodes macrocephala (RAM), which has been widely used in traditional herbal medicine and documented with antibacterial activities in literatures, was developed by aid of the extraction technique, nonwoven substrates and plasma-induced grafting technology. The effectiveness of these herbal antibacterial dressings with different treatment were investigated through the assays of grafting yield, SEM, FTIR, antibacterial activities and cytotoxicity...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531805/troxerutin-txn-potentiated-5-fluorouracil-5-fu-treatment-of-human-gastric-cancer-through-suppressing-stat3-nf-%C3%AE%C2%BAb-and-bcl-2-signaling-pathways
#11
Gui-Yun Xu, Xiao-Jun Tang
Gastric cancer still presents a significant problem for public health worldwide. Troxerutin (TXN), a flavonoid present in tea, coffee, cereal grains, and a variety of fruits and vegetables, exhibits various pharmacological and biological activities in vitro and in vivo. We investigated the ability of TXN to reverse the in vitro and in vivo drug resistance of human gastric cancer cells, which were resistant to treatment of 5-Fluorouracil (5-FU). 5-Fu is a pyrimidine analog, which is widely used in the treatment of cancers...
May 19, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28530596/phytochemicals-content-and-antioxidant-properties-of-sea-buckthorn-hippophae-rhamnoides-l-as-affected-by-heat-treatment-quantitative-spectroscopic-and-kinetic-approaches
#12
Florentina-Mihaela Ursache, Ioana Otilia Ghinea, Mihaela Turturică, Iuliana Aprodu, Gabriela Râpeanu, Nicoleta Stănciuc
The effect of thermal processing (50-100°C) on the degradation of the phytochemicals in sea buckthorn extract was investigated using chromatographic, fluorescence and FT-IR spectroscopy techniques and degradation kinetics. Heating the sea buckthorn extract resulted in structural changes that led to red- or blue-shifts in maximum emission, depending on temperature and excitation wavelengths. The attenuated total reflectance analysis of the sea buckthorn extract revealed a satisfactory thermostability of compounds at high temperatures...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28530577/impact-of-apple-cultivar-ripening-stage-fermentation-type-and-yeast-strain-on-phenolic-composition-of-apple-ciders
#13
Oskar Laaksonen, Rain Kuldjärv, Toomas Paalme, Mira Virkki, Baoru Yang
Hydroxycinnamic acids and flavonoids in apple juices and ciders were studied using liquid chromatography. Samples were produced from four different Estonian apple cultivars using unripe, ripe and overripe apples, and six different commercial yeasts including Saccharomyces cerevisiae, Saccharomyces bayanus, and Torulaspora delbrueckii strains. Part of the samples was additionally inoculated with malolactic bacteria, Oenococcus oeni. The most notable difference among the samples was the appearance of phloretin in malolactic ciders in comparison to conventional ciders and the juices...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28530567/using-combined-optimization-gc-ms-and-analytical-technique-to-analyze-the-germination-effect-on-phenolics-dietary-fibers-minerals-and-gaba-contents-of-kodo-millet-paspalum-scrobiculatum
#14
Seema Sharma, Dharmesh C Saxena, Charanjit S Riar
A central composite rotatable design was applied to study the effects of soaking time, germination time and temperature on the responses; total phenolics, total flavonoids and antioxidant activity for the biochemical enhancement of bioactive components of Kodo millet. The optimum conditions for producing germinated Kodo millet flour of highest TPC (83.01mgGAE/100g), TFC (87.53mgRUE/g) and AoxA (91.34%), were soaking time (13.81h), germination temperature (38.75°C) and germination time (35.82h). Protein increased significantly form, 6...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28530194/solvent-effect-in-the-synthesis-of-hydrophobic-drug-loaded-polymer-nanoparticles
#15
Sandip Pal, Chabita Saha
Quercetin is an abundant flavonoid in fruits, vegetables such as onion, tea leaves, cranberry, radish leaves etc. with numerous biological activities and widely used as an effective antioxidant. Its low solubility in water and chemical decomposition in intestinal environment are predicaments in delivery through dietary or oral intake. Noble polymeric nanoparticles are of particular interest today because of their applications in many areas. Polymer nanoparticles have attracted the interest of many research groups and have been utilised in an increasing number of fields such as site targeted drug delivery in cancer research during the last decades...
June 2017: IET Nanobiotechnology
https://www.readbyqxmd.com/read/28529177/senecio-brasiliensis-impairs-eclosion-rate-and-induces-apoptotic-cell-death-in-larvae-of-drosophila-melanogaster
#16
Giulianna Echeverria Macedo, Karen Kich Gomes, Nathane Rosa Rodrigues, Illana Kemmerich Martins, Gabriel da Luz Wallau, Nélson Rodrigues de Carvalho, Litiele Cezar da Cruz, Dennis Guilherme da Costa Silva, Aline Augusti Boligon, Jeferson Luis Franco, Thaís Posser
Senecio brasilienis (Spreng) Less., is a species native from Brazil, popularly known as "maria mole", and known to induce hepatotoxicity due to its high content of Pyrrolizidine alkaloids. Despite its toxicity, this plant is widely used in Brazilian folk medicine. Considering the antagonizing effects described for S. brasiliensis, we describe here molecular markers involved in the toxicity of hydroalcoholic extract from leaves of S. brasiliensis (HESB) in Drosophila melanogaster. Phytochemical analysis of HESB revealed the presence of phenolic acids and flavonoids...
May 18, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/28528971/regulatory-effects-of-4-methoxychalcone-on-adipocyte-differentiation-through-ppar%C3%AE-activation-and-reverse-effect-on-tnf-%C3%AE-in-3t3-l1-cells
#17
Younho Han, Sung Ho Lee, Ik-Soo Lee, Kwang Youl Lee
Chalcones, the biosynthetic precursors of flavonoids and isoflavonoids abundant in edible plants, possess a number of pharmacological properties, and there is growing evidence that chalcone derivatives inhibit TNF-α mediated insulin resistance. The aim of the present study was to define the effects of 4-methoxychalcone (4-MC) on adipocyte differentiation and to determine the underlying molecular mechanism. We investigated the effects of 4-MC on adipocyte differentiation and lipid accumulation, and expression of adipogenic genes in 3T3-L1 cells...
May 18, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28528955/potential-therapeutic-activity-of-phlogacanthus-thyrsiformis-hardow-mabb-flower-extract-and-its-biofabricated-silver-nanoparticles-against-chemically-induced-urolithiasis-in-male-wistar-rats
#18
Poppy Das, Kiran Kumar, Arunai Nambiraj, Reshma Rajan, Rajendra Awasthi, Kamal Dua, Himaja M
Urolithiasis is a painful disorder in which stones are formed in the kidney, bladder or urethra. There are no proper therapeutic treatments available for kidney stones and people suffering from larger stones have to undergo surgery which has many side effects. A natural remedy with therapeutic effects that can dissipate and remove even the larger stones would eliminate the need of a surgery and the risks associated with it. The flowers of Phlogacanthus thyrsiformis used in culinary recipes in the north eastern India are also widely used as a folklore medicine for the treatment of kidney stones and liver disorders...
May 18, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28528948/multi-functional-activities-of-citrus-flavonoid-narirutin-in-alzheimer-s-disease-therapeutics-an-integrated-screening-approach-and-in-vitro-validation
#19
Sandipan Chakraborty, Soumalee Basu
Alzheimer's disease (AD) is a complex disorder and the disease mechanism is yet to be properly characterized. Over the years, "amyloid cascade" emerges as principal pathogenic event in AD. β-Secretase 1 (BACE1) controls the rate-limiting step in amyloid beta (Aβ) generation and Aβ rapidly aggregates to form neurotoxic amyloid fibrils. Oxidative stress is one of the principal mediators of the observed neurotoxicity of amyloid fibril. The disease pathogenesis involves induction of multiple signaling cascades and the cross-talk therein...
May 18, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28528183/effects-of-quercetin-on-proliferation-and-migration-of-human-glioblastoma-u251-cells
#20
Yue Liu, Zhen-Gang Tang, Yi Lin, Xin-Guo Qu, Wei Lv, Guo-Bin Wang, Cai-Li Li
Quercetin is a flavonoid that has been shown to have anti-oxidation, anti-inflammation, anti-allergic, anti-viral, and anti-cancer activities. Here, we examined the effects of quercetin on cell viability, cell cycle progression, and migration in U251 cells, a human glioblastoma cell line. We found that quercetin inhibited cell proliferation after treating cells for 24 (IC50 of 113.65μg/ml) or 48h (IC50 of 48.61μg/ml). Quercetin treatment also induced apoptosis via deregulating the expression of apoptotic genes, including Bax and Bcl-2, and arrested cell cycle at G2/M phases...
May 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
keyword
keyword
21237
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"