inflammation oxidant stress and exercise
Báo cáo y học: "Tetra-O-methyl nordihydroguaiaretic acid (Terameprocol) inhibits the NF-B-dependent transcription of TNF-a and MCP-1/CCL2 genes by preventing RelA from binding its cognate sites on DNA" ppsx
Ngày tải lên :
11/08/2014, 03:20
... for TLR-3 and TLR-8 are double and single stranded RNA, respectively In these experiments we used the artificial ligands poly(I:C) for TLR-3 and resiquimod (R-848) for TLR-8 HEK293/TLR3 and HEK293/TLR8 ... for 60 while panels D and F show treatments with LPS and TMP for 20 and 60 min, respectively Following treatment cells were fixed, permeabilized and stained with anti-RelA Ab and a fluorescein coupled ... performed the experiments and drafted the manuscript FS and JRW supervised the reporter assays MLS supervised the ChIP and EMSA experiments SML, FS, and MLS participated in design and coordination of...
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Tài liệu Báo cáo khoa học: Solution NMR structure of five representative glycosylated polyene macrolide antibiotics with a sterol-dependent antifungal activity doc
Ngày tải lên :
21/02/2014, 03:20
... calculated, 21, 25, 29, 25 and 29 were retained, respectively, for pimaricin, nystatin A1, rimocidin, candidin and vacidin A on the basis of their low experimental and nonexperimental potential ... precluded the derivation of Ó FEBS 2002 4536 L Volpon and J.-M Lancelin (Eur J Biochem 269) Table 1H and 13C NMR assignments and ROEs of nystatin A1 and rimocidin (in MeOH-d4, 25 °C) Nystatin A1 Position ... C28 and C29 at the junction between the tetraene C20–C27 and the diene C30–C33 The absence of experimental restraints in these two regions and the conformational space allowed to the C2–C10 and...
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Tài liệu Báo cáo Y học: Ornithine decarboxylase-antizyme is rapidly degraded through a mechanism that requires functional ubiquitin-dependent proteolytic activity pot
Ngày tải lên :
22/02/2014, 04:20
... treated with cycloheximide and MG132 for the indicated times Cellular extracts were prepared, fractionated and antizyme and ODC detected as described in Fig Ó FEBS 2002 1320 S Gandre et al (Eur J Biochem ... vector and H L Ozer for the A31N wild type and ts20 cells This study was supported by a grant from the Leo and Julia Forchheimer Center for Molecular Genetics at the Weizmann Institute of Science and ... in A was scanned using a UmaxIII scanner and PHOTOSHOP-4.0 The relative intensities of the antizyme bands were determined by using IMAGE GAUGE V3.41 (C and D) Cos-7 cells were transfected with...
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Báo cáo khoa học: Characterization of the bga1-encoded glycoside hydrolase family 35 b-galactosidase of Hypocrea jecorina with galacto-b-D-galactanase activity pdf
Ngày tải lên :
16/03/2014, 11:20
... substrates and peptides and proteins for MS calibration were purchased from Sigma (St Louis, MO) and at least of analytical grade Arabinogalactan was purchased from Fluka (Buchs, Switzerland) and galactan ... temperature and pH for catalysis The optimal temperature and pH for the reaction of Bga1 with oNPG as substrate was determined (Fig 4): maximal activity was found at pH 5.0 and 60 °C, and a substantial ... constant at 28 °C and the pH between 4.8 and 5.2 by addition of 12.5% (w ⁄ v) NH4OH or 17.5% (w ⁄ v) H3PO4, respectively Aeration was vvm, and Impeller speed was set to 200 r.p.m., and after 12 h...
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Báo cáo khoa học: Lending a helping hand, screening chemical libraries for compounds that enhance b-hexosaminidase A activity in GM2 gangliosidosis cells pptx
Ngày tải lên :
30/03/2014, 03:20
... of the same natural and artificial substrates as Hex A: Hex B (bb) is very thermostable and has a basic pI, and Hex S (aa) is thermolabile and has an acidic pI Only the Hex A and B isozymes are ... PYR-responsive (green) and nonresponsive (red) mutations in the a- (pink) and b- (blue) subunits of Hex A are labeled and drawn as spheres NGT (orange spheres) is shown bound in the a- and b-active sites ... Tay-Sachs or Sandhoff disease, respectively The majority of HEXA and HEXB mutations prevent any Hex A from being formed and result in the infantile ⁄ acute form of TaySachs (ITSD) or Sandhoff (ISD)...
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Báo cáo khoa học: Selection of peptides inhibiting a b-lactamase-like activity docx
Ngày tải lên :
31/03/2014, 01:20
... °C for 10 and 35 cycles of denaturation at 94 °C for min, AB 348 and AB 349 primers annealing at 54 °C for and elongation at 72 °C for 1.5 Taq DNA polymerase was purchased from New England Biolabs ... chips and running buffer HBS pH 7.4 containing 10 mM Hepes, 0.15 M NaCl, 3.4 mM EDTA and 0.005% surfactant P20, were from Pharmacia (Uppsala, Sweden) Immobilization of the biotinylated ligands ... the negative step (NS and NS 2), and black bar the original library The background signal corresponds to the fixation of CX7C to the microplate not coated with IgG 9G4H9 Standard deviations are...
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Báo cáo y học: "Increased interleukin-17 production via a phosphoinositide 3-kinase/Akt and nuclear factor κB-dependent pathway in patients with rheumatoid arthritis" ppt
Ngày tải lên :
09/08/2014, 06:22
... κB [NF-κB] ligand), which is involved in bony erosion in RA [7] It also stimulates the production of IL-6 and leukemia inhibitory factor by synoviocytes, and of prostaglandin E2 and nitric oxide ... with 14 patients with OA (3 men and 11 women) and with 14 healthy controls (3 men and 11 women) who had no rheumatic diseases The mean ages of the patients with OA and the healthy controls were ... reduces joint inflammation, cartilage destruction, and bone erosion Arthritis Rheum 2004, 50:650-659 36 Bush KA, Farmer KM, Walker JS, Kirkham BW: Reduction of joint inflammation and bone erosion...
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Báo cáo y học: "Tumor necrosis factor-alpha promotes survival in methotrexate-exposed macrophages by an NF-B-dependent pathwa" pptx
Ngày tải lên :
12/08/2014, 15:22
... experiments B-F PAR and BAY (10 mM or 7.5 mM) prevent TNF-a from rescuing MTX-treated RAW264.7 cells (B and C) and BMDM (D-F) from apoptosis Cells were exposed to PAR (B, D, and E) or BAY (C and F) for ... NF-kB1 (p50), c-Rel and RelB (lanes 9, 10, 11 and 12, respectively, of the right panel) confirmed the identities of RelA and NF-kB1 in the complex with a lighter supershift c-Rel band Arrows on the ... include reduced availability of purines and pyrimidines for DNA and RNA synthesis and accumulation of AICAR AICAR, by inhibiting enzymatic deamination of adenosine and adenosine monophosphate, is proposed...
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Tài liệu Báo cáo khoa học: Functional characterization of an orphan cupin protein from Burkholderia xenovorans reveals a mononuclear nonheme Fe2+-dependent oxygenase that cleaves b-diketones ppt
Ngày tải lên :
18/02/2014, 06:20
... six-coordinate and had two nitrogen(oxygen) donor ligands at an average distance of ˚ 1.90 A and four nitrogen(oxygen) ligands at an ˚ average distance of 2.06 A Three of the four ligands were reported ... standard settings Secondary structure elements were manually assigned using the crystal structure of RgCarb (Protein Data Bank: 2O1Q) H indicates a-helix, and –> indicates b-strand Metal ligands ... [21], QDO (Protein Data Bank identifiers: 1Y3T and 1JUH) [11,12], gentisate 1,2-dioxygenase 5984 (Protein Data Bank identifiers: 2D40 and 3BU7) [22,23], and b-diketone-cleaving dioxygenase (Dke1)...
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Tài liệu Báo cáo khoa học: Regulation of cathepsin B activity by 2A2 monoclonal antibody docx
Ngày tải lên :
18/02/2014, 11:20
... cathepsin B protein and activity are found in tumour tissues and have been suggested as prognostic markers in patients with breast, lung, colon and ovarian carcinomas, as well as gliomas and melanomas ... binding of substrates and other inhibitors and to identify the mechanism by which it regulates the activity of cathepsin B Results Preparation and characterization of 2A2 mAb and its Fab fragments ... 2A2 mAb and its Fab fragment (A) SDS ⁄ PAGE of the Fab fragment (lane 2); low molecular weight standards (lane 1) (B) IEF of 2A2 mAb (lane 2); IEF standards (lane 1) Friguet et al [30] and was...
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Tài liệu Báo cáo khoa học: Dual P2Y12 receptor signaling in thrombin-stimulated platelets – involvement of phosphoinositide 3-kinase b but not c isoform in Ca2+ mobilization and procoagulant activity pdf
Ngày tải lên :
18/02/2014, 16:20
... activation and platelet aggregation [18] We and others have shown that both the PI3-Kb and PI3-Kc isoforms contribute to the P2Y12-mediated stabilization of platelet aggregates under static and shear ... relies on both phospholipase C and PI3-K activity PI3-Kb and not PI3-Kc mediates the P2Y12 effect on thrombin-evoked Ca2+ responses In man and mouse, the PI3-Kb (p110b) and PI3-Kc (p110c) isoforms ... al tirofiban from Merck, Sharp and Dohme (Haarlem, the Netherlands); Akt inhibitor and LY294002 from Calbiochem (La Jolla, CA, USA) ET-18-OCH3, manoalide, U73122 and U73343 came from Biomol (Plymouth...
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Tài liệu Báo cáo khoa học: Glycation of low-density lipoprotein results in the time-dependent accumulation of cholesteryl esters and apolipoprotein B-100 protein in primary human monocyte-derived macrophages docx
Ngày tải lên :
19/02/2014, 02:20
... (e.g Ne-carboxymethyl-lysines and Ne-carboxyethyl-lysines and pentosidine) being known to accumulate with age on tissue proteins, and at an increased rate in LDL and atherosclerotic lesions in ... manner, via scavenger receptor SR-A- and CD36-mediated processes, and that the uptake of lipid and protein occurs in synchrony Furthermore, it is shown that both lipid and modified protein accumulate ... may have significant cellular and atherogenic effects, and requires further study SR-A and CD36 have previously been reported to account for 75–90% of the uptake and degradation of acetylated...
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Tài liệu Báo cáo khoa học: Design, structure and biological activity of b-turn peptides of CD2 protein for inhibition of T-cell adhesion ppt
Ngày tải lên :
19/02/2014, 13:20
... hindrance between peptide and protein, and to relax the hydrogen added to the protein, the peptide and protein were merged and minimized before docking Atomic solvation parameters and fragmental volumes ... temperature probe The one- and two-dimensional NMR experiments were performed and processed on 300 MHz and 500 MHz Bruker DRX spectrometers equipped with a 5-mm broad-band inverse probe, at a proton ... Intensities were assigned as strong, medium and weak with upper and lower boundaries of distance for dNa (i, i), daN (i, i +1) and dNN (i, i +1), 1.9–3.0, 2.2–3.6 and ˚ 3.0–5.0 A, respectively [23] Side...
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Tài liệu Báo cáo khoa học: The Alzheimer b-peptide shows temperature-dependent transitions between left-handed 31-helix, b-strand and random coil secondary structures doc
Ngày tải lên :
20/02/2014, 01:20
... PII-helix and PII has a smaller RH than an extended b-strand Figure shows the calculated hydrodynamic radius dependence on number of residues for a polypeptide chain in ideal random coil, b-strand and ... of PII b-strand coil similar to residues 28, whereas Ala21 goes directly from PII-rich state to random coil Val18, Phe19, Phe20 and Val24 on the other hand seem to start in a b-strand-rich conformation ... were 1.33, 1.45 and 1.52 A and the xed angles between the bonds were: 58, 64 and 75 The rotations around the bonds were controlled: for a random coil peptide the rotation was free and for dened...
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Tài liệu Báo cáo khoa học: Molecular characterization and allergenic activity of Lyc e 2 (b-fructofuranosidase), a glycosylated allergen of tomato pdf
Ngày tải lên :
21/02/2014, 00:20
... some sera to a 9- and a 15-kDa band We could show that the 9-kDa band in the tomato extracts reacts with a specific antibody against the LTP from cherry, Pru av and the 15-kDa band shows reactivity ... nitrogen, and ground in a mill without thawing The obtained powder was homogenized in prechilled acetone and stored overnight at )20 °C The precipitate was filtered, washed twice with icecold acetone and ... Karlsruhe, Germany) and proteins were separated by SDS/ PAGE using a 10% resolving gel with 1.5-mm spacers Desired bands were excised from the gel after staining with 0.3 M CuCl2 and the protein...
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Tài liệu Báo cáo Y học: Characterization and regulation of yeast Ca2+-dependent phosphatidylethanolamine-phospholipase D activity docx
Ngày tải lên :
22/02/2014, 07:20
... the cytosolic and membrane-bound forms of yeast PtdEtn-PLD and examined the regulation of PtdEtn-PLD activity under certain growth, nutritional and stress conditions MATERIALS AND METHODS Chemicals ... (I+) and/ or mM choline (C+) Other amino acidrich media included: YPD [yeast extract and Bactopeptone (YP) containing 2% dextrose]; YPA (YP containing 0.05% glucose and 2% potassium acetate); and ... crude cytosolic, and cytosolic PtdEtnPLD partially purified on Q-Sepharose and Reactive Green-19 agarose, were prepared and chromatographed on a Superdex-75 column (see Materials and methods for...
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Báo cáo khoa học: The N-terminal hybrid binding domain of RNase HI from Thermotoga maritima is important for substrate binding and Mg2+-dependent activity pot
Ngày tải lên :
06/03/2014, 22:21
... Primers and 3, primers and 3, and primers and were used to amplify the genes encoding Tma-RNase HI, Tma-CD and Tma-ND, respectively The resultant DNA fragments were digested with NdeI and HindIII ... three-stranded anti-parallel b-sheet (b1–b3) and two helices (aA and aB) [22] It binds to the minor groove of the substrate, such that a loop between aA and b3 interacts with the RNA backbone and ... (39% for HBD and 38% for RNase H domain) Enzymatic activity The dependencies of the Tma-RNase HI and TmaCD activities on pH, salt and metal ion were Fig CD spectra of Tma-RNase HI and its derivatives...
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Báo cáo khoa học: Autocatalytic processing of procathepsin B is triggered by proenzyme activity doc
Ngày tải lên :
07/03/2014, 03:20
... T58A, deletion of E59 and D60) as a template and mutagenic primers: 5¢-CCAGAACGTTCCGTTTGCACTGAA-3¢ (for T58ADED_M56P mutant: R54N, M56P, T58A, deletion of E59 and D60) and 5¢-GAACGTTATGCCGGCACTGA ... with zymography (bottom) and native PAGE (top) at pH 7.4: (1) procathepsin B; (2) cathepsin B; and (3) cathepsin B, previously inactivated by a h incubation at pH 7.6 and 37 °C Further details ... procathepsin B in the presence of (s), 1.7 (d), 8.5 (h), 17 ( ) and 34 (D) nM E-64 at pH 4.5 and 37 °C Aliquots were taken from the reaction mixtures and added to 10 lM Z-Arg-Arg-NH-MEC substrate solution...
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