keyword
MENU ▼
Read by QxMD icon Read
search

TEAC

keyword
https://www.readbyqxmd.com/read/27896020/identification-of-phenolic-secondary-metabolites-from-schotia-brachypetala-sond-fabaceae-and-demonstration-of-their-antioxidant-activities-in-caenorhabditis-elegans
#1
Mansour Sobeh, Esraa ElHawary, Herbenya Peixoto, Rola M Labib, Heba Handoussa, Noha Swilam, Ahmed H El-Khatib, Farukh Sharapov, Tamer Mohamed, Sonja Krstin, Michael W Linscheid, Abdel Nasser Singab, Michael Wink, Nahla Ayoub
BACKGROUND: Schotia brachypetala Sond. (Fabaceae) is an endemic tree of Southern Africa whose phytochemistry and pharmacology were slightly studied. The present work aimed at profiling the major phenolics compounds present in the hydro-alcohol extract from S. brachypetala leaves (SBE) using LC/HRESI/MS/MS and NMR and prove their antioxidant capabilities using novel methods. METHODS: In vitro assays; DPPH, TEAC persulfate decolorizing kinetic and FRAP assays, and in vivo assays: Caenorhabditis elegans strains maintenance, Intracellular ROS in C...
2016: PeerJ
https://www.readbyqxmd.com/read/27882602/the-resveratrol-derivatives-trans-3-5-dimethoxy-4-fluoro-4-hydroxystilbene-and-trans-2-4-5-trihydroxystilbene-decrease-oxidative-stress-and-prolong-lifespan-in-caenorhabditis-elegans
#2
Nadine Fischer, Christian Büchter, Karoline Koch, Sabrina Albert, René Csuk, Wim Wätjen
OBJECTIVES: Resveratrol (trans-3,4',5-trihydroxystilbene (1)) was previously shown to extend the lifespan of different model organisms. However, its pharmacological efficiency is controversially discussed. Therefore, the bioactivity of four newly synthesized stilbenes (trans-3,5-dimethoxy-4-fluoro-4'-hydroxystilbene (3), trans-4'-hydroxy-3,4,5-trifluorostilbene (4), trans-2,5-dimethoxy-4'-hydroxystilbene (5), trans-2,4',5-trihydroxystilbene (6)) was compared to (1) and pterostilbene (trans-3,5-dimethoxy-4'-hydroxystilbene (2)) in the established model organism Caenorhabditis elegans...
November 23, 2016: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/27872932/phytochemical-profiles-of-marine-phytoplanktons-an-evaluation-of-their-in-vitro-antioxidant-and-anti-proliferative-activities
#3
Jim Jun-Hui Huang, Wen-Wen Xu, Shao-Ling Lin, Peter Chi-Keung Cheung
Marine microorganisms such as phytoplanktons are a rich resource of bioactive components with antioxidant and anti-proliferative activities that can act as novel functional food ingredients. In this study, the pigment profiles, total mycosporine-like amino acids (MAAs) and total phenolic contents (TPCs) in solvent extracts including 90% acetone and methanol from five marine phytoplanktons including Nitzschia closterium (Bacillariophyta), Isochrysis zhangjiangensis (Haptophyta), Platymonas subcordiformis (Chlorophyta), Porphyridium cruentum (Rhodophyta) and Synechocystis pevalekii (Cyanobacteria) were analyzed...
November 22, 2016: Food & Function
https://www.readbyqxmd.com/read/27872878/serum-antioxidant-capacity-and-peroxide-level-of-seven-healthy-subjects-after-consumption-of-different-foods
#4
Maura N Laus, Mario Soccio, Michela Alfarano, Antonella Pasqualone, Marcello S Lenucci, Giuseppe Di Miceli, Donato Pastore
This article reports experimental data related to the research article entitled "Different effectiveness of two pastas supplemented with either lipophilic or hydrophilic/phenolic antioxidants in affecting serum as evaluated by the novel Antioxidant/Oxidant Balance approach" (M.N. Laus, M. Soccio, M. Alfarano, A. Pasqualone, M.S. Lenucci, G. Di Miceli, D. Pastore, 2016) [1]. Antioxidant status of blood serum of seven healthy subjects was evaluated during four hours after consumption of two functional pastas, supplemented with either bran oleoresin or bran water extract obtained from durum wheat...
December 2016: Data in Brief
https://www.readbyqxmd.com/read/27865264/changes-in-serum-biomarkers-of-oxidative-stress-after-treatment-for-canine-leishmaniosis-in-sick-dogs
#5
Camila Peres Rubio, Silvia Martinez-Subiela, Asta Tvarijonaviciute, Josefa Hernández-Ruiz, Luis Pardo-Marin, Sergi Segarra, José Joaquín Ceron
Canine leishmaniosis (CanL) is a zoonotic disease being endemic in several parts of the world. In this study we investigated the behavior of a panel of biomarkers of oxidative stress in 12 sick dogs naturally infected by CanL before and at days 30 and 180 of a successful therapy with a standard treatment. The assays total oxidant status (TOS), trolox equivalent antioxidant capacity (TEAC), ferric reducing ability of plasma (FRAP), cupric reducing antioxidant capacity (CUPRAC), serum thiol and paraoxonase 1 (PON1) were included in the panel...
December 2016: Comparative Immunology, Microbiology and Infectious Diseases
https://www.readbyqxmd.com/read/27862315/evaluation-of-salivary-nitric-oxide-levels-and-c-reactive-protein-in-patients-with-oral-lichen-planus-and-burning-mouth-syndrome
#6
Tvarijonaviciute Asta, Aznar Cayuela Cristina, Peres Rubio Camila, Ceron José Joaquin, Pia López-Jornet
OBJECTIVES: The aim of this study was to evaluate oxidative stress factors and C-reactive protein in the saliva of patients with oral lichen planus (OLP) and burning mouth syndrome (BMS). METHODS: This consecutive, cross-sectional study included 20 patients with OLP, 19 with burning mouth syndrome (BMS), and 31 control subjects. The oral cavity of each patient was examined and patients responded to a quality of life questionnaire (OHIP-14) and the Xerostomia Inventory...
November 8, 2016: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/27859283/impact-of-pecan-nut-shell-aqueous-extract-on-the-oxidative-properties-of-margarines-during-storage
#7
Paula Cristina Engler Ribeiro, Priscila de Britto Policarpi, Andrea Dal Bo, Pedro Alberto Barbetta, Jane Mara Block
BACKGROUND: The oxidative properties of margarines supplemented with pecan nut shell extracts, rosemary extract and butylated hydroxytoluene (BHT) were investigated RESULTS: The extracts of pecan nut shell and rosemary showed a high content of total phenolics and condensed tannins (93 and 102.9 mg GAE g(-1) and 46 and 38.9 mg CE g(-1) , respectively) as well as a high antioxidant activity (1257 and 2306 µmol TEAC g(-1) , and 293 and 856 mg TEAC g(-1) for ABTS and DPPH methods, respectively)...
November 17, 2016: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/27854274/the-potential-exploitation-of-the-mediterranean-invasive-alga-caulerpa-cylindracea-can-the-invasion-be-transformed-into-a-gain
#8
Loredana Stabili, Simonetta Fraschetti, Maria Immacolata Acquaviva, Rosa Anna Cavallo, Sandra Angelica De Pascali, Francesco Paolo Fanizzi, Carmela Gerardi, Marcella Narracci, Lucia Rizzo
Recently, there is a growing interest towards the development of strategies for invasive seaweed control and exploitation as source of secondary metabolites. Here, we investigated the potential of exploitation in biotechnology and recycling options in eradication programs of the lipidic extract of the Mediterranean invasive seaweed Caulerpa cylindracea (Chlorophyta). The chemical characterization was carried out by means of multinuclear and multidimensional NMR spectroscopy. The fatty acid profile of C. cylindracea assessed the presence of several types of molecules known for antioxidant activity such as carotenoids, chlorophylls, pheophytins, and sterols...
November 15, 2016: Marine Drugs
https://www.readbyqxmd.com/read/27844321/possible-antioxidant-effect-of-lycium-barbarum-polysaccharides-on-hepatic-cadmium-induced-oxidative-stress-in-rats
#9
Maria Vittoria Varoni, Valeria Pasciu, Sergio Domenico Gadau, Elena Baralla, Elisa Serra, Domenico Palomba, Maria Piera Demontis
The aim of this study was to investigate the potential protective effect of Lycium barbarum polysaccharides (LBP) pretreatment against cadmium (Cd)-induced hepatotoxicity in rats. Wistar rats were divided into control group, LBP group (300 mg/kg orally, once a day, for 30 days), Cd group (CdCl2 4 mg/kg i.p. once), and LBP + Cd group (LBP 300 mg/kg orally, once a day, for 30 days + CdCl2 4 mg/kg i.p. 24 h after the last treatment). Cd liver injury was examined by morphological/histological changes, transaminases, total protein concentration, and oxidative stress evaluated by MDA, 3NT, GSH, SOD, and TEAC activities...
November 14, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27822337/on-the-anticataractogenic-effects-of-l-carnosine-is-it-best-described-as-an-antioxidant-metal-chelating-agent-or-glycation-inhibitor
#10
Hamdy Abdelkader, Michael Longman, Raid G Alany, Barbara Pierscionek
Purpose. L-Carnosine is a naturally occurring dipeptide which recently gained popularity as an anticataractogenic agent due to its purported antioxidant activities. There is a paucity of research and conclusive evidence to support such claims. This work offers compelling data that help clarify the mechanism(s) behind the anticataract properties of L-carnosine. Methods. Direct in vitro antioxidant free radical scavenging properties were assayed using three different antioxidant (TEAC, CUPRAC, and DPPH) assays...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27814716/the-inhibitory-activity-of-herbal-medicines-on-the-keys-enzymes-and-steps-related-to-carbohydrate-and-lipid-digestion
#11
Weerachat Sompong, Nuttapat Muangngam, Artitaya Kongpatpharnich, Chadakarn Manacharoenlarp, Chanatkarn Amorworasin, Tanyawan Suantawee, Thavaree Thilavech, Sirichai Adisakwattana
BACKGROUND: Obesity and overweight are consistently associated with metabolic disorders including hyperglycemia and hyperlipidemia. Herbal medicines have been currently suggested as an alternative source of potentially useful antihyperglycemic, antihyperlipidemic, antioxidant activities. The objective of this study was to assess the in vitro inhibitory effects of eleven herbal medicines on carbohydrate and lipid digestive enzymes and the key steps of lipid digestion including the inhibition of micelle formation and the ability to bind bile acid...
November 4, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27802575/antioxidative-effects-of-a-glucose-cysteine-maillard-reaction-product-on-the-oxidative-stability-of-a-structured-lipid-in-a-complex-food-emulsion
#12
Molly J Sproston, Casimir C Akoh
A glucose-cysteine Maillard reaction product (MRP) was produced and its antioxidant effects on lipid oxidation were determined for a structured-lipid enriched with polyunsaturated fatty acids in a complex emulsion. Trolox equivalent antioxidant capacities (TEAC) were determined for MRP heating intervals of 2, 4, and 6 h and were compared to α-tocopherol (TOC), MRP with TOC (TOC-MRP), and TOC with ascorbyl palmitate (TOC-AP). Emulsions were produced with total antioxidant additions of 0.02% of the oil, and lipid oxidation was monitored by peroxide and p-anisidine values over 56 d...
November 1, 2016: Journal of Food Science
https://www.readbyqxmd.com/read/27738445/the-extrusion-process-as-an-alternative-for-improving-the-biological-potential-of-sorghum-bran-phenolic-compounds-and-antiradical-and-anti-inflammatory-capacity
#13
Norma Julieta Salazar Lopez, Guadalupe Loarca-Piña, Rocío Campos-Vega, Marcela Gaytán Martínez, Eduardo Morales Sánchez, J Marina Esquerra-Brauer, Gustavo A Gonzalez-Aguilar, Maribel Robles Sánchez
Approximately 80% of sorghum phenolic compounds are linked to arabinoxylans by ester bonds, which are capable of resisting the digestion process in the upper gastrointestinal tract, compromising their bioaccessibility and biological potential. The aim of this study was to evaluate the effect of the extrusion process on the content of phenolic compounds in sorghum bran and its impact on phenolic compounds and antiradical and anti-inflammatory capacity. Results revealed that the extrusion process increased total phenol content in sorghum bran compared to nonextruded sorghum, particularly for extrusion at 180°C with 20% moisture content (2...
2016: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/27703414/normal-femorotibial-rotational-alignment-and-implications-for-total-knee-arthroplasty-an-mri-analysis
#14
Gregory C Wernecke, Ian A Harrris, Bradley G Seeto, Darren B Chen, Samuel J MacDessi
BACKGROUND: Rotational alignment of prosthetic components in total knee arthroplasty (TKA) is important to successful outcomes. Component malrotation is a known cause of revision and understanding normal rotational alignment may help recreate normal joint kinematics. To date, no large MRI study assessing femorotibial rotational alignment in nonarthritic knees has been undertaken. QUESTIONS/PURPOSES: Is Insall's tibial axis a reliable rotational landmark against common femoral rotational axes in the nonarthritic patient population? METHODS: We reviewed 544 knee MRI scans performed for suspected soft tissue pathology and identified Insall's tibial rotational axis as well as the femoral clinical trans-epicondylar axis (TEAc), femoral surgical trans-epicondylar axis (TEAs), posterior condylar articular axis (PCA), and a modified Eckhoff's cylindrical axis...
October 2016: HSS Journal: the Musculoskeletal Journal of Hospital for Special Surgery
https://www.readbyqxmd.com/read/27648444/phenolic-compounds-and-in-vitro-antibacterial-and-antioxidant-activities-of-three-tropic-fruits-persimmon-guava-and-sweetsop
#15
Li Fu, WenQing Lu, XiaoMin Zhou
In our previous study, we have found that persimmon, guava, and sweetsop owned considerably high antioxidant activity and contained high total phenolic contents as well. In order to further supply information on the antibacterial and antioxidant activity of these three tropic fruits, they were extracted by 80% methanol. We then examined the extractions about their phenolic compounds and also studied the extractions and phenolic contents about their minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) against twelve targeted pathogens including 8 standard strains (Staphylococcus aureus, Bacillus cereus, Staphylococcus epidermidis, Monilia albican, Escherichia coli, Salmonella typhimurium, Shigella flexneri, and Pseudomonas aeruginosa) and 4 multidrug-resistant strains (methicillin-resistant Staphylococcus aureus, ESBLs-producing Escherichia coli, carbapenems-resistant Pseudomonas aeruginosa, and multidrug-resistant Acinetobacter baumannii), which are common and comprehensive in clinic...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27626416/identification-of-bioactivity-volatile-and-fatty-acid-profile-in-supercritical-fluid-extracts-of-mexican-arnica
#16
J Saúl García-Pérez, Sara P Cuéllar-Bermúdez, Alejandra Arévalo-Gallegos, José Rodríguez-Rodríguez, Hafiz M N Iqbal, Roberto Parra-Saldivar
Supercritical fluid extraction (SFE) is a sustainable technique used for the extraction of lipophilic metabolites such as pigments and fatty acids. Arnica plant is considered a potential candidate material with high antioxidant and antimicrobial activities. Therefore, in this study, a locally available Heterotheca inuloides, also known as Mexican arnica, was analyzed for the extraction of high-value compounds. Based on different pressure (P), temperature (T), and co-solvent (CoS), four treatments (T) were prepared...
2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27620880/sodium-hydrosulfide-prevents-hypertension-and-increases-in-vascular-endothelial-growth-factor-and-soluble-fms-like-tyrosine-kinase-1-in-hypertensive-pregnant-rats
#17
Jose Sergio Possomato-Vieira, Victor Hugo Gonçalves-Rizzi, Tamiris Uracs Sales Graça, Regina Aparecida Nascimento, Carlos A Dias-Junior
Sodium hydrosulfide (NaHS) has presented antihypertensive and antioxidant effects and may reduce circulating soluble fms-like tyrosine kinase-1 (sFlt-1). We examined whether NaHS prevents maternal and fetal detrimental changes in a model of hypertension in pregnancy induced by N(G)-nitro-L-arginine methyl ester (L-NAME). Forty pregnant rats were divided into four groups (n = 10 per group): Norm-Preg, Preg + NaHS, HTN-Preg, or HTN-Preg + NaHS. Systolic blood pressure (SBP), number of viable fetuses, litter size, pups, and placentae weights were recorded...
September 12, 2016: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/27589874/ripening-of-pithecellobium-dulce-roxb-benth-guam%C3%A3%C2%BAchil-fruit-physicochemical-chemical-and-antioxidant-changes
#18
Abraham Wall-Medrano, Gustavo A González-Aguilar, Guadalupe F Loarca-Piña, José A López-Díaz, Mónica A Villegas-Ochoa, Orlando Tortoledo-Ortiz, Francisco J Olivas-Aguirre, Arnulfo Ramos-Jiménez, Ramón Robles-Zepeda
The fruit of Guamúchil is an excellent source of bioactive compounds for human health although their natural occurrence could be affected by the ripening process. The aim was to evaluate some physicochemical, chemical and antioxidant changes in guamúchil fruit during six ripening stages (I to VI). A defined trend (p ≤ 0.003) was observed for color [°Hue, 109 (light green) to 20 (dark red)], anthocyanins (+571 %), soluble solids (+0.33 (o)Brix), ash (+16 %), sucrose (-91 %), proanthocyanidins (63 %), ascorbic acid (-52 %) and hydrolysable PC (-21 %)...
September 2, 2016: Plant Foods for Human Nutrition
https://www.readbyqxmd.com/read/27589711/chemical-composition-antioxidant-and-antibacterial-activity-of-wood-vinegar-from-litchi-chinensis
#19
Jyh-Ferng Yang, Cheng-Hong Yang, Ming-Tsai Liang, Zi-Jie Gao, Yuh-Wern Wu, Li-Yeh Chuang
The antioxidant and antibacterial activities of wood vinegar from Litchi chinensis, and its components have been studied. The chemical compositions of wood vinegar were analyzed by gas chromatography-mass spectrometry (GC-MS). A total of 17 chemical compounds were identified, representing 83.96% of the compositions in the wood vinegar. Three major components, included 2,6-dimethoxyphenol (syringol, 29.54%), 2-methoxyphenol (guaiacol, 12.36%), and 3,5-dimethoxy-4-hydroxytoluene (11.07%), were found in the wood vinegar...
2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27586851/support-vector-regression-guided-unravelling-antioxidant-capacity-and-quantitative-structure-activity-relationship-predict-reduction-and-promotion-effects-of-flavonoids-on-acrylamide-formation
#20
Mengmeng Huang, Yan Wei, Jun Wang, Yu Zhang
We used the support vector regression (SVR) approach to predict and unravel reduction/promotion effect of characteristic flavonoids on the acrylamide formation under a low-moisture Maillard reaction system. Results demonstrated the reduction/promotion effects by flavonoids at addition levels of 1-10000 μmol/L. The maximal inhibition rates (51.7%, 68.8% and 26.1%) and promote rates (57.7%, 178.8% and 27.5%) caused by flavones, flavonols and isoflavones were observed at addition levels of 100 μmol/L and 10000 μmol/L, respectively...
September 2, 2016: Scientific Reports
keyword
keyword
89342
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"