2 inhibition of nmda excitotoxicity by aprotinin
Báo cáo khoa học: Kinetics of the inhibition of neutrophil proteinases by recombinant elafin and pre-elafin (trappin-2) expressed in Pichia pastoris ppt
Ngày tải lên :
07/03/2014, 15:20
... elan-immunoreactive material Fig Evolution of rec-trappin-2 production by Pichia pastoris as a function of the duration of fermentation Aliquots of concentrated supernatants of rec-trappin-2-secreting P pastoris ... before measurement of the residual enzymatic activity by addition of 10 lL of a 100 mM Suc(Ala)3-p-NA stock solution Product release was continuously recorded until a constant rate of paranitroaniline ... favor of proteases which widely overwhelm the inhibitory capacity of lung uid The biological signicance of this control mechanism has been highlighted by the observation that the development of...
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Tài liệu Báo cáo khoa học: Interferon-a induces sensitization of cells to inhibition of protein synthesis by tumour necrosis factor-related apoptosis-inducing ligand ppt
Ngày tải lên :
19/02/2014, 06:20
... extent of apoptosis but also the ability of TRAIL to regulate the initiation of translation at the level of eIF2a phosphorylation and 4E-BP1 dephosphorylation Control of protein synthesis by IFNa ... extent of phosphorylation of 4E-BP1, as revealed by a shift in the migration of the latter protein on SDS gels from the b and c forms to the hypophosphorylated a form (Fig 3C,D) and by the loss of ... of TRAIL such that very little of the full-length form of either protein remained in the IFN-treated cells after h of exposure to TRAIL Thus, the activity of caspase-8, and most likely that of...
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Báo cáo khoa học: Endogenous tetrahydroisoquinolines associated with Parkinson’s disease mimic the feedback inhibition of tyrosine hydroxylase by catecholamines doc
Ngày tải lên :
07/03/2014, 05:20
... the presence of DA and TIQs Data are shown as the percentage of the activity level in the absence of inhibitors (n = 4) (B) A Lineweaver–Burk plot of hTH activity in the presence of NMNorsal (1.0 ... and spin of the iron in hTH in the presence of DA and four structurally distinct TIQs The divalent iron of the unbound enzyme was EPRsilent Addition of DA produced a signal with g values of 7.1 ... Oxidation of the active site iron (A) Rapid freeze-quench EPR spectra of hTH in the presence of equimolar concentrations of DA or NMNorsal exhibited a characteristic signal at g values of 7.1 and...
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Báo cáo khoa học: A new and efficient method for inhibition of RNA viruses by DNA interference pptx
Ngày tải lên :
16/03/2014, 02:20
... phases of RNAi Ago proteins are key components of RISC responsible for the cleavage of the target RNA The cleavage is catalysed by a Piwi domain of Ago proteins, the structural homolog of RNase ... effect of targeted RNA in HeLa cells to be at the level of approximately 78% when 100 nm siDNA was used (Fig 2) Application of higher concentrations of siDNAs than of siRNAs is necessitated by the ... leaves of N benthamiana The weaker response of infected tobacco plants to dsDNA treatment in these experiments could be explained by the length of the cDNA (1409 bp), which was longer than that of...
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Báo cáo Y học: Growth inhibition of mammalian cells by eosinophil cationic protein pptx
Ngày tải lên :
17/03/2014, 17:20
... cases of mediating regression of tumors [53,54] In¯ammatory in®ltrates comprised of eosinophils may also play an important role at the primary site of tumor regression by releasing ECP as part of ... the growth inhibition of K562 cells in Fig was shown after days of treatment with ECP, which was Fig Suppression of cell growth in the presence of ECP Left, the percentages of viable cells under ... size of the colonies of 60% compared with control cells (Fig 5B) These results demonstrate that ECP impairs the growth of cells Cellular localization of ECP Fig Growth-inhibitory eect of ECP...
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Báo cáo Y học: Concentration-dependent reversible activation-inhibition of human butyrylcholinesterase by tetraethylammonium ion pptx
Ngày tải lên :
24/03/2014, 03:21
... hydrolysis of BTC by this enzyme obeyed Michaelis–Menten kinetics In order to investigate the kinetics of this mutant more closely, we measured the hydrolysis of BTC catalyzed by the W82A mutant, by ... concentration of the product was formed The stock solutions of the two enzymes were prepared by dilution of the aliquots with the same amount of buffer The mixture was prepared by mixing together ... Progress curves for the hydrolysis of butyrylthiocholine catalyzed by the horse butyrylcholinesterase, by the W82A mutant of human butyrylcholinesterase and by the enzyme mixture Measurements...
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Báo cáo y học: " mGluR5 positive modulators both potentiate activation and restore inhibition in NMDA receptors by PKC dependent pathway" docx
Ngày tải lên :
10/08/2014, 05:21
... pretreatment of slices with DFB, CHPG, or CDPPB followed by an NMDA application, the amplitude of NMDA- induced Figure Effects of mGluR5 modulators on NMDA- induced field potentials and the NMDA receptor ... responses As NMDA was pretreated before co-application of mGluR5 modulators, the potentiation of NMDA receptor activation and restoration of NMDA receptor blockade were regulated by CHPG, but not by DFB ... Pretreatment of NMDA alters the regulation of mGluR5 modulators on the potentiation of NMDA activation and prevention of NMDA blockade The hippocampal slices were initially exposed to NMDA with...
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Báo cáo y học: " Induction of apoptosis and inhibition of cell growth by tbx5 knockdown contribute to dysmorphogenesis in Zebrafish embryos" pptx
Ngày tải lên :
10/08/2014, 10:20
... Disruption of mitochondrial function during apoptosis is mediated by caspase cleavage of the p75 subunit of complex I of the electron transport chain Cell 2004, 117:773-786 Page 10 of 10 24 Waterhouse ... data revealed activation of apoptosis and inhibition of cell growth in embryonic tbx5 morphants at 36 hpf by transcriptional and translational levels By RTPCR, the members of BCL-2 family genes ... eventually come to the end sequel of apoptosis and cease of cell growth Besides, the distribution of aberrant apoptosis and deviant cell cycle caused by a deficiency of tbx5 in the embryos might be...
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báo cáo khoa học: " Inhibition of telomerase activity by HDV ribozyme in cancers" ppsx
Ngày tải lên :
10/08/2014, 10:20
... expression plasmid of HDV ribozyme Methods The bel7402, HCT116 cells were given by Department of molecular Biology, Shandong University, DNA of HDV ribozyme was synthesized by Shanghai Biosun ... to meet the need of cleavage of telomerase We called the new Figure Structure of antigenomic ribozyme of HDV (g.RZ 1/84) Telomerase RNA plasmid construction We cloned a portion of hTR component ... a 184 bp fragment by of hTR cDNA by digestion of Recombinant plasmid pBBS212 containing hTR gene (provided Ribozyme transfected bel7402 cells and HCT116 cells showed decrease of hTR RNA In ribozyme...
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Báo cáo y học: "Inhibition of NFκB by the natural product Withaferin A in cellular models of Cystic Fibrosis inflammation" pps
Ngày tải lên :
11/08/2014, 08:22
... stimulation of cellular signaling by bacterial products through toll-like receptors (TLRs) lead to hyper-activation of the transcription factor NFκB and over-expression of a number of pro-inflammatory ... inhibitor of NFκB activity [12,13] The overall goal of this study was to characterize the effect of this compound on NFκB in cellular models of CFrelated inflammation In our studies, filtrates of PA ... clinically isolated mucoid strain of PA (originally from the laboratory of Dr M.C Wolfgang, University of North Carolina) were donated by Dr S Randell (University of North Carolina) [15] HEK 293...
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Báo cáo y học: "Hepatitis B virus core protein with hot-spot mutations inhibit MxA gene transcription but has no effect on inhibition of virus replication by interferon a" pptx
Ngày tải lên :
12/08/2014, 01:22
... collected for detection of HBc protein expression by western blot as described below, and used for extraction of total RNA by Trizol (Invitrogen) Levels of MxA mRNA were assessed by real-time PCR as ... activity of the MxA gene induced by IFN-a Moreover, our results reveal that the inhibition of MxA gene transcription by WT HBc or its hot-spot mutants has no impact on inhibition of HBV replication by ... supported by two grants from Shenzhen scientific Research Program of the People’s Republic of China (NO 200801020 and NO 200902174) and also supported by a grant from Ministry of Education of China...
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Báo cáo khoa học: "Inhibition of lentivirus replication by aqueous extracts of Prunella vulgaris" pdf
Ngày tải lên :
12/08/2014, 04:21
... extracts: 66.8 μg/mL of Ames 27664, 69.2 μg/mL of Ames 27665, 64.2 μg/mL of Ames 27666, or 67.4 μg/mL of Ames 27748) Equivalent quantities of EIAVWSU5 were added to each well of ED cells along with ... infections of UVECs DMSO and water extracts of Ames 27664 and 27748 were diluted in media to 0.1% (33 μg/mL of Ames 27664 or 31.2 μg/mL of Ames 27748) or 0.2% (66 μg/mL of 27664 or 62.4 μg/mL of 27748) ... final concentration of 0.2% The percent of infected cells was determined by dividing the number of EIAV antigen positive cells in the presence of extract compared to the number of EIAV antigen positive...
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Báo cáo y học: " Trans-inhibition of HIV-1 by a long hairpin RNA expressed within the viral genome" pps
Ngày tải lên :
13/08/2014, 09:20
... Luc-Nef + Figure Test of sequence-specificity of the inhibition by HIV-lhNef Test of sequence-specificity of the inhibition by HIV-lhNef (A) Trans-inhibition of HIV-1 production by HIV-lhNef and the ... detected in the same sample by subsequent agarose gel electrophoresis of the DNA fragments The outgrowth of a particular virus was verified by cloning and sequencing of the PCR products from the ... pBS + HIV-lhNef Figure Trans-inhibition of HIV-1 by HIV-lhNef Trans-inhibition of HIV-1 by HIV-lhNef (A) HEK239T cells were co-transfected with 150 ng of the HIV-1 molecular clone LAI, HIV-lhNef,...
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Báo cáo y học: " Inhibition of Tat activity by the HEXIM1 protein" docx
Ngày tải lên :
13/08/2014, 09:21
... LTR sequences was unaffected by the presence of F:HEXIM1 or 7SK RNA In contrast, Tat-mediated transactivation of the HIV-1 LTR was inhibited by the over-expression of F:HEXIM1 in a dose-dependent ... effect of HEXIM1 expression was highlighted by the results shown in Fig 2B G5HIV-Luc reporter was activated by co-expression of a GAL4-TBP, and such activation was largely unaffected by co-expression ... determinants of HEXIM1 protein in repression, the activity of Gal4-CycT1 on G5HIV- Luc was monitored in the presence of co-transfected Flagtagged deletion mutants of HEXIM1 We found that removal of the...
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Regulation of NMDA receptors by serine proteases tissue plasminogen activator (tPA) and plasminogen plasmin
Ngày tải lên :
11/09/2015, 10:18
... neuromodulator of the N-methyl-Daspartate (NMDA) receptors The aim of this thesis is to examine the modulation of NR2B-containing NMDA receptors by the tPA/plasminogen system Through the analysis of tPA-treated ... engaged by tPA in the modulation of NMDA receptors would enable us to have a better understanding of the multi-faceted roles of tPA in the brain (500 words) ix List of tables Table 1.1 Competitive NMDA ... phosphorylation by Fyn is also implicated in regulation of surface expression of NMDA receptors (Nakazawa et al., 2001; Prybylowski et al., 27 2005) (Figure 1.6) and calpain-mediated cleavage of NMDA receptors...
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Inhibition of copper corrosion by orthophosphate a mechanistic study
Ngày tải lên :
22/10/2015, 22:43
... micrographs of copper surface after 30 days of immersion, x10,000 (a) control experiment at pH of 7.2 (b) 1.0 mg P/L added at pH of 7.2 (c) control experiment at pH of 8.4 (d) 1.0 mg P/L added at pH of ... + 2H2O The source of hydroxyl ions is the cathodic reduction of oxygen This cathode action of orthophosphate as an inhibitor of iron corrosion of iron in water was suggested by earlier researchers ... spectra of the protective film formed after and 30 days of immersion at pH of 7.2, with addition of 1.0 mg P/L and 4.0 mg/L Chlorine 61 Figure 4.8 Cu 2p (a), O 1s (b) and P 2p (c) XPS spectra of the...
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Báo cáo khoa học: ` Inhibition of human ether a go-go potassium channels by 2+ Ca ⁄calmodulin binding to the cytosolic N- and C-termini potx
Ngày tải lên :
07/03/2014, 12:20
... 1–206 in steps of 3) and C-terminal (amino-acids 480–962 in steps of and amino-acids 645–895 in steps of 2) cytosolic domains of hEAG1 Binding of BODIPY FL-labeled hCaM in the presence of 25 lm free ... mechanism of CaM-mediated closure of hEAG1 channels is far from understood mainly because of the lack of structural information on the cytosolic channel domains in complex with CaM Initiated by the ... with the C-terminal domain of Ca2+-free CaM, i.e apoCaM The activation of these channels is mediated by conformational changes in the CaM ⁄ SK2 complex induced by binding of at least one Ca2+ ion...
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Báo cáo Y học: Inhibition of glycosyl-phosphatidylinositol biosynthesis in Plasmodium falciparum by C-2 substituted mannose analogues pot
Ngày tải lên :
31/03/2014, 23:20
... of parasites After 10 h of incubation, the viability of parasites was assessed by light microscopy of Giemsa-stained smears and measured by [35S]methionine incorporation into total proteins by ... presence of mannosamine The absence of new mannosaminecontaining GPtdIns and the inhibition of incorporation of tritiated glucosamine into GPtdIns may point to an inhibition of GPtdIns biosynthesis by ... inhibition of glucosamine incorporation by 97, 98 or 98%, respectively The synthesis of the MSP-1 determined by incorporation of [35S]methionine into immunoprecipitated protein was reduced by 57 and...
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Báo cáo Y học: Inhibition of SERCA Ca2+ pumps by 2-aminoethoxydiphenyl borate (2-APB) 2-APB reduces both Ca2+ binding and phosphoryl transfer from ATP, by interfering with the pathway leading to the Ca2+-binding sites ppt
Ngày tải lên :
31/03/2014, 23:20
... shows the rate of change of the tryptophan fluorescence induced by Ca2+ binding in the absence or presence of mM 2-APB (B) shows the rate of change of tryptophan fluorescence induced by Ca2+ dissociation ... of the fluorescent dye by Co2+ ions (15 lM) Upon addition of 2-APB, the rate of quenching is substantially increased and dependent upon the concentration of 2-APB The trace is representative of ... Ca2+-ATPase The effect of 2-APB on membrane permeability was monitored by assessing the quenching of calcein dye trapped in egg phosphatidylcholine liposomes by Co2+, as described by Longland et al...
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Báo cáo y học: "All-trans retinoic acid suppresses interleukin-6 expression in interleukin-1-stimulated synovial fibroblasts by inhibition of ERK1/2 pathway independently of RAR activation" ppsx
Ngày tải lên :
09/08/2014, 01:22
... confirmed a lack of activation of NFIL-6 or c-Jun after 30 minutes of stimulation with IL-1 [37] but a strong activation of both pathways after hours of stimulation [38] At the time of their optimal ... ERK1/2 by Western blot after 5, 15, or 30 minutes, respectively The effect of ATRA and the possible contribution of ERK1/2 on IL1β-induced activation of NF-κB, NF-IL-6, or AP-1 were studied by TransAm™ ... were converted into nanograms of DNA using calibration curves made of serial dilutions of known amounts of corresponding purified PCR products The transcript level of the housekeeping gene RP29...
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