1regulation of nf kappa b activity by the proteasome

Báo cáo hóa học: " Differential inhibition of human cytomegalovirus (HCMV) by toll-like receptor ligands mediated by interferon-beta in human foreskin fibroblasts and cervical tissue" pdf

Ngày tải lên : 20/06/2014, 01:20

... CpG, or LTA Poly I:C conditioned medium inhibited HCMV infection by 61% and the inhibition was completely reversed by the presence of anti-IFNβ antibody but not control serum (Fig 6) Although LPS ... medium inhibited HCMV infection by 91%, and the inhibition was reversed by neutralization of IFNβ (Fig 6) CpG conditioned medium also significantly inhibited HCMV infection (71%) and inhibition was ... I:C-conditioned medium inhibited HCMV replication by 73% and LPS-conditioned medium inhibited HCMV replication by 84% (Fig 4) Addition of anti-IFNβ antibody reduced the ability of Poly I:C and LPS conditioned...

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Báo cáo y học: "Type I interferon receptor controls B-cell expression of nucleic acid-sensing Toll-like receptors and autoantibody production in a murine model of lupus" doc

Ngày tải lên : 09/08/2014, 14:22

... and methods Mice and treatment BALB/cJ mice were purchased from The Jackson Laboratory (Bar Harbor, ME, USA) IFNAR2-/- mice on the BALB/c background were provided by Paul J Hertzog (Monash University, ... responded normally to the TLR9 agonist in the absence of exogenous IFN-α (Figure 5b) , the IFN-α-mediated enhancement of B- cell activation by ODN1826 was completely abolished in B cells from IFNAR2-/- ... mice on the basis of similarity of autoantibody profiles directed against the significant antigens identified by SAM The results are displayed as a heatmap (Figure 2) SAM identified reactivity...

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Báo cáo y học: " Nontypeable Haemophilus influenzae induces COX-2 and PGE2 expression in lung epithelial cells via activation of p38 MAPK and NF-kappa B" pps

Ngày tải lên : 12/08/2014, 15:21

... binding activity of NF- kappa B induced by NTHi A549 cells were incubated with different concentrations of NTHi with or without SB203580, and DNA binding activity of NF- kappa B was measured by EMSA ... inoculation, and the pre-treatment of the specific inhibitor of p38 MAPK SB203580 blocked p38 MAPK signaling activated by NTHi (Fig 4B) Up-regulation of NF- kappa B DNA binding activity after NTHi ... release by NTHi, also, was significantly reduced by both p38 MAPK inhibitors and NF- kappa B inhibitor The findings in the present study clearly demonstrate that the activation of p38 MAPK and NF- kappa...

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Báo cáo khoa học: Human lactoferrin activates NF-jB through the Toll-like receptor 4 pathway while it interferes with the lipopolysaccharide-stimulated TLR4 signaling potx

Ngày tải lên : 06/03/2014, 11:20

... activation of NF- jB (Fig S4A, B) There is intense interest in the effects of breast-feeding on infants and the mechanisms behind these effects Compared with formula-fed infants, breast-fed infants ... of note that the magnitude of NF- jB activation induced by a pre-PMB–agarose fraction of hLF (500 lgÆmL)1), which contained 13 EUÆmL)1 of endotoxin, was comparable to that induced by a postPMB–agarose ... NF- jB DNA binding in THP-1 cells (Fig 1A) In mammals, the family of NF- jB proteins comprises ﬁve members: RelA ⁄ p65, RelB, c-Rel, p50 ⁄ NF- jB1 and p52 ⁄ NF- jB2 Homodimers or heterodimers of these...

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Báo cáo khoa học: Phosphorylation of NF-jB proteins by cyclic GMP-dependent kinase A noncanonical pathway to NF-jB activation potx

Ngày tải lên : 08/03/2014, 02:20

... is enhanced by cGMP, can be competed by a PKG substrate peptide but not by a control peptide, and is inhibitable by a cGMP analog with inhibition being more efﬁcient in the absence of cGMP than ... migrating NF- jB band Note that the resting levels of NF- jB binding are relatively high in O3 cells, because the clone depends on the presence of interleukin-2 in the growth medium, whereas the hybridoma ... does not (C) The induction by PKG plus cGMP of DNA binding by AF3.G7 cytosol is inhibitable by addition of high concentrations of a competing PKG substrate peptide, GRTGRRNSI (ÔPKI substrateÕ, amounts...

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Báo cáo y học: "Differential Constitutive and Cytokine-Modulated Expression of Human Toll-like Receptors in Primary Neutrophils, Monocytes, and Macrophages" docx

Ngày tải lên : 08/08/2014, 16:23

... neutrophils These cytokines have been shown to increase the microbicidal activity of monocytes and neutrophils [42] We hypothesize that the effects on TLR expression by these cytokines contribute to the ... pro-inflammatory cytokines rather than TLR-ligand binding per se The results of our study demonstrate that several pro-inflammatory cytokines contribute to the regulation of TLR expression Of the ... normalized results were calculated by dividing the relative transcript levels of the test genes by the relative amount of the 18s RNA Figure Relative constitutive expression of neutrophil TLR2, TLR4,...

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Báo cáo y học: "No evidence of major effects in several Toll-like receptor gene polymorphisms in rheumatoid arthritis" pdf

Ngày tải lên : 09/08/2014, 01:22

... TLR genes in the pathogenesis of RA would be weakly predictable Competing interests We tested five out of the 11 members of the TLR family and selected these five members based on their potential ... but at position -851 of the gene (+1 being at the beginning of exon instead of exon 2) The primers used for PCR amplification of SNP1 and SNP2 PCR are presented in Table PCR conditions will be ... switch in B lymphocytes, which may be involved in the pathogenesis of RA Further evidence of the role for TLR9 comes from the efficacy in RA of chloroquine and quinacrine, both of which block TLR9...

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Báo cáo y học: "No evidence of major effects in several Toll-like receptor gene polymorphisms in rheumatoid arthritis" ppt

Ngày tải lên : 09/08/2014, 13:22

... TLR genes in the pathogenesis of RA would be weakly predictable Competing interests We tested five out of the 11 members of the TLR family and selected these five members based on their potential ... but at position -851 of the gene (+1 being at the beginning of exon instead of exon 2) The primers used for PCR amplification of SNP1 and SNP2 PCR are presented in Table PCR conditions will be ... switch in B lymphocytes, which may be involved in the pathogenesis of RA Further evidence of the role for TLR9 comes from the efficacy in RA of chloroquine and quinacrine, both of which block TLR9...

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Báo cáo y học: "The role of toll-like receptors in acute and chronic lung inflammation" pdf

Ngày tải lên : 11/08/2014, 03:20

... in the induction of lung inflammation For example, the cytoplasmic NALP3 protein, a member of the NLR family that triggers assembly of the caspase-1 inflammasome and production of mature IL- 1b, ... pneumoniae infection, thereby decreasing the production of IL-6 and other Th1 proinflammatory mediators that are required for bacterial clearance [199] Antibiotic treatment of asthmatic patients infected ... [190] Based on this observation, TLR9 ligands are currently in clinical trials for the treatment or prevention of asthma [191] Asthma can be further exacerbated by bacterial respiratory tract infection...

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Báo cáo y học: "Early Characterization of Toll-like receptors in primary lung epithelial cells: strong impact of the TLR3 ligand poly(I:C) on the regulation of Toll-like receptors, adaptor proteins and inflammatory response" ppt

Ngày tải lên : 11/08/2014, 08:21

... provide further insight in the role of TLRs in the immune response of the lung epithelium to viral and bacterial infections and their contribution to virus and bacteria induced exacerbations of pulmonary ... and permeabilized by incubation with BD Cytofix/Cytoperm solution (BD Bioscience) The anti-TLR1 (GD2.F4) mAb, anti-TLR2 Page of 15 (page number not for citation purposes) Journal of Inflammation ... stimulation, the expression of the IFN-inducible IP-10 and ITAC could be significantly blocked by an IFN-β neutralizing antibody demonstrating the induction of an IFN-response in SAEC by poly(I:C) Immunofluorescence...

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Báo cáo y học: " Differential expression of Toll-like receptors on human alveolar macrophages and autologous peripheral monocytes" pdf

Ngày tải lên : 12/08/2014, 14:20

... modulate the anti-inflammatory activity of IL-10 either by altering its production or by inhibiting the cellular responsiveness to the cytokine [43] M.tb DNA (TLR9) induced similar levels of TNF-a, ... respectively None of the antibodies showed nonspecific crossreactive binding Preparation of M.tb DNA M.tb DNA was prepared as described previously by our group [28,29] Briefly, 109 M.tb H37 Rv bacteria ... microenvironment or the maturation stages of the cells To test the latter possibility, we modeled the impact of the differentiation process from monocytes to macrophages on the expression of TLRs by in vitro...

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Báo cáo y học: "Trapped in a vicious loop: Toll-like receptors sustain the spontaneous cytokine production by rheumatoid synoviu" doc

Ngày tải lên : 12/08/2014, 15:22

... and recently reported not to be essential for TLR2 signaling [10,11] Furthermore, TNFα production by RA synovial membrane cells could be blocked by imiquimod and the serotonin receptor antagonist ... proinﬂammatory cytokines and matrix metalloproteinases by RA synovial membrane cells can also be inhibited by overexpression of the dominant-negative form of MyD88 adaptor-like (Mal), an adaptor molecule ... Roelofs MF, Radstake TR, Heuvelmans-Jacobs M, Akira S, Nicklin MJ, Ribeiro-Dias F, van den Berg WB: Stimulation of TLR2 and TLR4 differentially skews the balance of T cells in a mouse model of...

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Báo cáo y học: " Toll-like receptors in cellular subsets of human tonsil T cells: altered expression during recurrent tonsillitis" ppsx

Ngày tải lên : 12/08/2014, 16:20

... at the interface fraction while the rosetting T cells are obtained from the pellet [22,23] The T cells are thereafter obtained by lysing the SRBCs with dH20 and 1.4 M NaCl Different subsets of ... http://docs.appliedbiosys tems.com/pebiodocs/04303859.pdf The relative amounts of mRNA for the TLRs were determined by subtracting the Ct values for these genes with the Ct value for the housekeeping ... and the outcome of the core culture (Table 1) The infected group consisted of 18 patients referred to tonsillectomy because of multiple episodes (at least four times during the year preceding the...

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Báo cáo y học: " Science review: Key inflammatory and stress pathways in critical illness – the central role of the Toll-like receptors" ppsx

Ngày tải lên : 12/08/2014, 19:21

... creates the septic syndrome, and a handful of specific receptors alert the host to the presence of an infection The effector limb of the response During the decade of the 1980s, one of the key ... containing receptors (in the case of IL-1) or TNF-family receptors (in the case of TNF) Hence, there is the potential for an amplification loop, dampened by feedback inhibition of the TLR4 pathway (endotoxin ... are connected by the cytokine TNF (which does not exist in flies) Each pathway has the effect of activating nuclear factor- B (NF- B) , although the second (TNF receptor) limb of the pathway may...

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The role of downstream of kinase (DOK) 3 in toll like receptor signalling

Ngày tải lên : 09/09/2015, 10:16

... activation of the IKK complex These events result in the degradation of the NF B inhibitor I B and the subsequent translocation of NF B to the nucleus, where transcription of NF B- dependent ... cells ABIN1 A20-binding inhibitor of NF B BCR B cell receptor BLNK B cell linker protein BTK Bruton‟s tyrosine kinase CD cluster of differentiation DBD DNA binding domain Dok Downstream of kinase ... hereby declare that the thesis is my original work and it has been written by me in its entirety I have duly acknowledged all the sources of information which have been used in the thesis This thesis...

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báo cáo hóa học: " Toll-like receptors in cerebral ischemic inflammatory injury" pdf

Ngày tải lên : 19/06/2014, 22:20

... characterized by the expression of various immunological proteins in the circumventricular organs as well as other structures that are not subject to the blood-brain barrier (BBB) This expression of immunological ... antiHMGB1 monoclonal antibody (mAb) remarkably ameliorated brain infarction induced by a 2-hour occlusion of the middle cerebral artery in rats, even when the mAb was administered after the start of ... Furthermore, anti-HMGB1 antibody inhibited the activation of microglia, the expression of TNF-a, and iNOS In contrast, intracerebroventricular injection of HMGB1 increased the severity of infarction...

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Báo cáo y học: "Toll-like receptors and innate immune responses in systemic lupus" docx

Ngày tải lên : 09/08/2014, 10:21

... patients exhibit highly increased expression of a wide variety of genes that are known to be upregulated by IFNs This effect appears to be mediated by IFN-α subtypes secreted prominently by pDCs A ... overwhelming of these systems can stimulate an immune response Whether these mice exhibit evidence of TLR-mediated activation remains to be determined, but the role of TLR activation has been Page of (page ... role of anti-DNA antibodies in lupus pathogenesis, these studies strongly support the roles of TLRs in the development of autoantibodies, but they suggest that autoimmunity to DNA mediated by TLR9...

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Báo cáo y học: "Toll-like receptors and NOD-like receptors in rheumatic diseases" pdf

Ngày tải lên : 09/08/2014, 14:21

... with the tick-borne spirochete Borrelia burgdorferi A subacute inflammatory arthritis develops in 60% of individuals not treated at the time of the tick bite, and is associated with invasion of the ... this effect can be reduced by therapeutic blockade of TNFα [55] Polymorphisms in TLR4 have been described and there are several studies that have looked at the association between these polymorphisms ... joint tissue by spirochetes Immune responses of the host toward B burgdorferi are predominantly mediated by the recognition of proteins modified with tripalmitoyl-S-glyceryl-cysteine by TLR2 [31]...

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Báo cáo y học: " Gut flora enhance bacterial clearance in lung through toll-like receptors 4" docx

Ngày tải lên : 10/08/2014, 10:20

... pretreatment on NF- B DNA binding activity in the lung further corroborates the important role that commensal microflora play in inducing NF- B signaling in the lung Nuclear factor kappa B (NF- B) regulates ... inducing the NF- B activation and lung defense against E.coli pneumonia Moreover, the abolition of the stimulatory effect of LPS on pulmonary NF- B activation and bacterial killing activity of alveolar ... have been shown to be involved in the generation of lung inflammation through signaling mechanisms that are dependent on activation of the NF- B pathway [22] Inflammatory signaling through the NF B...

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