vitamin e isoforms and their natural sources
Báo cáo khoa học " Structure elucidation and antioxidant activity of a novel polysaccharide isolated from Tricholoma matsutake " ppt
... study, PC12 cells were seeded into 96-well plates at the concentration of × 104 cells/mL using Dulbcco’s Modified Eagle Medium After 24 h, PC12 cells were pretreated with TMP-A for h before H2 O2 (300 ... calculated as follows: scavenging effect (%) = (A − B)/A × 100, where A is the change speed of absorbance of the control group in the superoxide anion generation system and B is the change speed of ... in the absence of the sample and H2 O2 , and A is the absorbance only in the presence of the H2 O2 2.6 Nuclear magnetic resonance (NMR) experiment 2.12 Statistical analysis 1H NMR spectra and...
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Báo cáo vật lý: "Evaluation of In Vitro Antioxidant Activity of 5H-dibenz[b,f]azepine and Its Analogues" ppt
... 10,11-dihydro-5Hdibenz[b,f]azepine (1) and 5H-dibenz[b,f]azepine (a) (Scheme 1) Furthermore, these two molecules were used for the preparation of the derivatives (b–f) (Schemes and 3) The structures of the compounds were ... better the chemistry and antioxidant properties of 5H-dibenz[b,f]azepine and its derivatives Six molecules (a–f) were synthesised, and their structures were established by chemical and spectral ... compound (a) The presence of the methoxy group in the seven member ring may enhance the stability of the nitrogen centred radical due to the electron conjugation effect The absence of N– Evaluation...
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Báo cáo y học: "Behavioral and antioxidant activity of a tosylbenz[g]indolamine derivative. A proposed better profile for a potential antipsychotic agent" pptx
... free radical damage to neurons [8,10,11] while others support that vitamin E appears to be effective in reducing the severity of TD, especially in patients who are young and have recently developed ... with the absorption at 535–600 nm Each experiment was performed at least in duplicate The UV measurements were carried out on a Perkin-Elmer 554 spectrophotometer Results The effect of the TPBIA ... significant development for disseminating the results of biomedical researc h in our lifetime." Sir Paul Nurse, Cancer Research UK Your research papers will be: available free of charge to the entire biomedical...
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Báo cáo y học: "Antioxidant activity of tuberosin isolated from Pueraria tuberose Linn" pot
... with fresh complete media The attached macrophages were used for various experiments as described in respective tables All tests were carried out in triplicate In one set only drug vehicle (0.1% ... presence of free transition metals in the biological system leads to excessive generation of free radicals [14] However when the natural antioxidant enzymes are not sufficient to scavenge these active ... regulates Figure Effect of different concentrations of Tuberosin on LPS induced iNOS expression in attached rat peritoneal macrophages The macrophages were pretreated with quercetin and tuberosin...
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Antioxidant activity of essential oils
... percent of constituents were identified in all other essential oil samples The results of these analyses are presented in Table I as a relative peak area of each constituent It seems that there ... were composed of only five, eight and seven compounds, respectively On the other side, some oils were very complex The everlast, nutmeg and, laurel essential oils were composed of 37, 24 and ... concentration, this representing a one-electron exchange reaction The results were corrected for dilution and expressed in mmol FeII/L The sample to be analyzed was first adequately diluted to...
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Evaluation of the antioxidant activity of scutellaria baicalensis and its constituents in diabetic rats
... regions of Asia and the Mediterranean However, the elucidation of the pathogenesis of diabetes occurred mainly in the 20th century The role of the pancreas in the disease pathogenesis of diabetes ... changing definitions which reflect the variations in the state of derived knowledge Terms have changed from juvenile and adult diabetes to insulin-dependent and non-insulin-dependent diabetes and finally ... the protein expressions of CAT, SOD and GPx in the GK rats; (E) representative western blot image of CAT, SOD and GPx quantification The values were measured on day 30 and are representative...
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Nghiên cứu về hoạt tính chống oxy hóa của các cây thuộc African Antioxidant Activity of African Medicinal Plants
... as free radical scavengers by preventing and repairing damage caused by ROS and, therefore, can enhance the immune defense and lower the risk of cancer and degenerative diseases [6,12] The human ... components [18] These natural plant antioxidants can therefore serve as a type of preventive medicine Recent reports indicate that there is an inverse relationship between the dietary intake of ... the treatment of cough and tuberculosis [86] The leaves were used to treat wounds and abscesses and were used externally to treat neuralgia, throat infections, and a wide range of skin diseases...
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Báo cáo y học: "Pravastatin Provides Antioxidant Activity and Protection of Erythrocytes Loaded Primaqe"
... PCO level was assessed to evaluate primaquine-mediated protein oxidative damage In our observation there is marked elevation of erythrocytes PCO level by primaquine exposure is noticed These findings ... After this, the samples were rinsed in distilled water and then dehydrated using a graded ethanol series; 25, 50, 75, 100 and another 100% each for 10 Then the samples were rinsed in water, removed, ... cytoprotection against oxidative stress [22] Therefore, the decrease of NPSH levels in erythrocytes, making them more susceptible to oxidative insult Nonetheless, primaquine mediate oxidative stress...
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Báo cáo hóa học: "Effects of Pin-up Oxygen on [60]Fullerene for Enhanced Antioxidant Activity" pptx
... The mixture was centrifuged and the obtained solution was filtered through a membrane filter (0.45 and 0.1 lm) to give a clear purple solution The concentration of solution and the yield were estimated ... effective than C60 in all tested ranges of concentration It was also noted that the entrapped PVP and CD exerted no appreciable effect on the antioxidant activity of guest fullerenes To the best ... concentration [fullerene]/[b-carotene] for PVP-entrapped C60, C60O, and C60On The slope of each linear regression line corresponds to the relative radical scavenging rate constant krrs relative...
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Báo cáo y học: " Antioxidant components of naturally-occurring oils exhibit marked anti-inflammatory activity in epithelial cells of the human upper respiratory system" pdf
... oil preparation, two separate experiments were undertaken to determine the extent to which this effect could be attributed to the orange oil component BEAS-2B cell cultures were pretreated with ... scented masking agent, was selected for use as the sham test agent Because saline, itself, has been reported to reduce inflammatory cell number in the nose [37], water was considered to represent ... antioxidant enzyme gene activation [38] These cells were cultured and seeded on filter inserts, as described above, and used in all assessments of Nrf2 activation in the present study Treatment and Exposure...
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anthocyanin – study of extraction from basella rubra l and verifying antioxidant activity, application in identificating di sodium tetra borate in food
... (1-8) Methods 2.1 Sample preparation ‒ Fresh fruits was collect and separated into part, one were used in moisture experiment and the other part were used in the rest experiment ‒ Fruits were treat ... carried out for the aim of verifying the effect of solvent and temperature on the same object when extracted anthocyanins from fruits There were two factors in this experiment, solvent and temperature; ... Object: fresh fruits of Basella rubra L Method: dried sample at 70oC for 48 hours, experiment was repeated times 3.3.2 The effect of solvent and temperature on the extraction process The experiment...
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Báo cáo y học: "Anticancer Activity of the PR Domain of Tumor Suppressor RIZ1"
... receptor tyrosine kinases, residues 924-973 (C) Identical and homologous residues are shown in red and blue, respectively The sequence identity and homology between RIZ1 and EphR were 34.2% and ... The cells were treated for 24 hr before the cell death rate was examined by the trypan blue method The cells were stained by 0.01% trypan blue for 10 and then examined under a microscope At least ... analyze mRNA expression levels of selected target genes using Origene qPCR Cancer Survey Panels (Rockville, Maryland, USA) has been reported previously [21] Briefly, the primers and the TaqMan...
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ANALYSIS OF MICROBIAL COMMUNITY STRUCTURE AND IN SITU ACTIVITY OF NITRIFYING BIOFILMS
... of the total domestic wastewater biofilm clones sequenced were closely related to members of Nitrosomonas ureae with more than 97% sequence similarity These clones were closely related to each ... and are subsequently subjected to sequence analysis The retrieved sequences can be phylogenetically analyzed by comparing with existing 16S rRNA gene database and used for probe and primer designing ... working electrode and the reference Reference electrode (Ag/AgCl) Working electrode (Pt wire) 50 m pH, NO2- and NO3microsensors Charge separation of ions across a membrane Guard cathode Glass Electrolyte...
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Photocatalytic bactericidal activity of silver-sensitized titanium dioxide on Micrococcus lylae
... oxygen species (e. g superoxide radicals) which were generated from water molecules around the photocatalyst and were able to penetrate the outer layer of bacteria These reactive species oxidized ... be retarded as Ag+ which acts as an electron acceptor Therefore, the time for •OH generation can be extended and the effectiveness in killing bacteria increased However, in the present study, ... enhance the photocatalytic activity and lowers the expenditure on catalyst Moreover, operational cost in electricity can be reduced as the irradiation time is shortened by the use of more effective...
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Tài liệu Báo cáo khoa học: Multi-targeted activity of maslinic acid as an antimalarial natural compound pdf
... proteins have never been suggested as possible targets for MA Nevertheless, there is compelling evidence of the connection between these targets and malaria Phospholipase A2 (PLA2) was detected in ... protease (PfSUB1) has been shown to reduce erythrocyte invasion [24], while proteases involved in merozoite egress of the red blood cell, like the serine repeat antigen (SERA) family also regulated ... provided by The Malaria Research and Reference Reagent Resource Center (MR4, deposited by DJ Carucci) Erythrocytes (RBC) were obtained from type A+ healthy human local donors and collected in tubes...
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Tài liệu Báo cáo khoa học: Intrinsic GTPase activity of a bacterial twin-arginine translocation proofreading chaperone induced by domain swapping ppt
... predicted to be located on an exposed loop between helix and helix The residues of this putative G-4 motif were subjected to site-directed mutagenesis The focus was residue D-68, the final residue ... concentration and weight-average sedimentation coefficient were determined for each species using the integration tool in sedfit GTPase actvity assays Two GTPase assays were employed in the present study, ... Ffh-FtsY composite active site and provided by the Ras and Rho GTPase GAPs [54–56] However, the experiments conducted in the present study were unable to demonstrate an increase in the rate of GTP hydrolysis...
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Tài liệu Báo cáo khoa học: The ubiquitin ligase Itch mediates the antiapoptotic activity of epidermal growth factor by promoting the ubiquitylation and degradation of the truncated C-terminal portion of Bid ppt
... rLuc-fused Itch expressed alone in the same experiments [47] Cell survival assay HEK-293T cells were plated in six-well plates and transfected with the indicated vectors Cells were then plated in ... either Bid–GFP of tBid–GFP The graph is a representative example of the saturation studies performed to provide evidence for a specific interaction between the proteins BRET ratios were plotted ... right panel) Itch expression in these experiments was shown by western blot (Fig 2A, bottom panel) Together, these results show that Itch expression itself influences the balance between cell survival...
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Tài liệu Báo cáo khoa học: Autolytic activity of human calpain 7 is enhanced by ESCRT-III-related protein IST1 through MIT–MIM interaction pptx
... 7C290S–Strep itself made the substrate more resistant to the protease Moreover, the efficiency of generation of 30 K in the intermolecular reaction experiment seems less than that observed in the experiment ... (C290S) were incubated with Strep-Tactin Sepharose beads After incubation, unbound proteins were removed (Unbound), and the beads were washed Proteins bound to the beads were eluted with a buffer containing ... described above Cleared lysates of cells were incubated with anti-GFP serum for h and protein G–Sepharose Fast Flow (GE Healthcare) for h at °C, the beads were washed three times with buffer A, and...
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Tài liệu Báo cáo khoa học: Structural effects of a dimer interface mutation on catalytic activity of triosephosphate isomerase The role of conserved residues and complementary mutations pptx
... stable than the wild-type enzyme at elevated temperature and in the presence of denaturants [27] Extending these studies, we examine here the effect of increasing the bulk of the residue at position ... archaeal sequences), the residues at position 10 (Asn) and position 64 (Gln) have been replaced by Ser in ve sequences and Glu in 27 sequences, respectively These replacements conserve the hydrogen ... proteins are listed in Table 2, together with the relevant parameters for the WT protein and related mutants described previously The Michaelis Menten and LineweaverBurke plots for the enzymes are shown...
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Tìm thêm: hệ việt nam nhật bản và sức hấp dẫn của tiếng nhật tại việt nam xác định các mục tiêu của chương trình khảo sát các chuẩn giảng dạy tiếng nhật từ góc độ lí thuyết và thực tiễn khảo sát chương trình đào tạo của các đơn vị đào tạo tại nhật bản xác định thời lượng học về mặt lí thuyết và thực tế điều tra đối với đối tượng giảng viên và đối tượng quản lí điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1 khảo sát các chương trình đào tạo theo những bộ giáo trình tiêu biểu phát huy những thành tựu công nghệ mới nhất được áp dụng vào công tác dạy và học ngoại ngữ mở máy động cơ lồng sóc mở máy động cơ rôto dây quấn hệ số công suất cosp fi p2 đặc tuyến tốc độ rôto n fi p2 đặc tuyến dòng điện stato i1 fi p2 động cơ điện không đồng bộ một pha thông tin liên lạc và các dịch vụ phần 3 giới thiệu nguyên liệu từ bảng 3 1 ta thấy ngoài hai thành phần chủ yếu và chiếm tỷ lệ cao nhất là tinh bột và cacbonhydrat trong hạt gạo tẻ còn chứa đường cellulose hemicellulose chỉ tiêu chất lượng theo chất lượng phẩm chất sản phẩm khô từ gạo của bộ y tế năm 2008 chỉ tiêu chất lượng 9 tr 25