... I:C resulted in a 63% reduction in the number of infected cells, while at doses of μg/ml and 10 μg/ml of Poly I:C, >97% reduction in the number of infected cells was observed (Fig 1C) In contrast, ... pre-treatment of HFF with TLR3 and TLR4 ligands, but not TLR2 or TLR9 ligands, inhibited HCMV infection Time dependence of TLR stimulation for HCMV inhibition and IL-8 production The effect of timing of ... not inhibit HCMV at any of the times (not shown) These results show that 24 hours of exposure to Poly I:C and LPS resulted in a maximal antiHCMV effect The effect of time of cell stimulation with...
Ngày tải lên: 20/06/2014, 01:20
... development of proteinuria in the mice, a measure of kidney disease, was therefore assessed Over the course of 12 months, of 10 (50%) pristane-treated WT mice developed proteinuria, whereas none of 10 ... hypergammaglobulinemia characterized by the production of high levels of IgG as well as increased levels of IgM [39] Importantly, pristane induces the production of high levels of IgG2a, a pathogenic isotype that ... the development of kidney damage in the pristane model of SLE Because the development of kidney disease in the pristane model is not as severe as in other spontaneous models of SLE, such as the...
Ngày tải lên: 09/08/2014, 14:22
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
... obstructive pulmonary disease (COPD) in adults [1,2] The emergence of antibiotic-resistance strains of NTHi and the difficulty of development of efficacious vaccines urge further efforts to understand ... modified Eagle's medium sup- Page of (page number not for citation purposes) Respiratory Research 2008, 9:16 plemented with 10% FBS, 0.5 mg/mL of G418, and 10 µg/ mL of ciprofloxacin (Cellgro, Herndon, ... Figure Phosphorylation of p38 MPAK induced by NTHi Phosphorylation of p38 MPAK induced by NTHi A A549 cells were inoculated with 10 and 50 MOI of NTHi, and phosphorayltion of p38 MAPK was detected...
Ngày tải lên: 12/08/2014, 15:21
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
... activity of LF may account for the other properties of this protein in the modulation of the inflammatory process [3] The stimulation of mammalian cells by LPS occurs through a series of interactions ... chains of hLF play an important role in the recognition of hLF by THP-1 macrophages [22] In Biological action of hLF is mediated through TLR4 order to evaluate the role of carbohydrate chains of ... of residual LPS in the post- PMB agarose fractions of hLF is responsible for NF-jB activation We next focused on the molecular mechanism of how initial signaling that leads to the activation of...
Ngày tải lên: 06/03/2014, 11:20
Báo cáo khoa học: Phosphorylation of NF-jB proteins by cyclic GMP-dependent kinase A noncanonical pathway to NF-jB activation potx
... phosphorylation of p49 or p50 depends on the presence of PKG and is enhanced by the addition of cGMP, whereas cGMP in the absence of the kinase does not mediate measurable incorporation of phosphate ... positive control (at the chosen concentrations of reporter DNA, PKG induces a less than twofold induction of transactivation by endogenous p65) Expression of the transfected proteins was confirmed by ... modes of T-cell activation induced comparable levels of tritiated thymidine incorporation in the same experiment (Fig 1A) To confirm the dependence of the superantigen mediated induction of Fig...
Ngày tải lên: 08/03/2014, 02:20
Báo cáo y học: "Differential Constitutive and Cytokine-Modulated Expression of Human Toll-like Receptors in Primary Neutrophils, Monocytes, and Macrophages" docx
... expression of TLRs was normalized to expression of 18s RNA The final normalized results were calculated by dividing the relative transcript levels of the test genes by the relative amount of the ... in a variety of tissues.[16, 17, 22, 23] This study examined the expression of TLR2, TLR4, TLR5, and TLR9 in normal primary human professional phagocytes Constitutive expression of TLR2, TLR4, ... may also control protein expression of TLRs on the cell surface and intracellularly through regulation of inhibitory RNA pathways, protein translation and post- translational processes Our results...
Ngày tải lên: 08/08/2014, 16:23
Báo cáo y học: "No evidence of major effects in several Toll-like receptor gene polymorphisms in rheumatoid arthritis" pdf
... at position +3483 of the gene (+1 being at the beginning of exon instead of exon 2) SNP2 is a C/T polymorphism that constitutes a noncoding mutation, probably at position -1486 of the promoting ... of the promoting region 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 ... a minor participation of the gene; this encouraged us to keep a variance for the locus of 0.05 to 0.2 The power finally estimated was 80% for a number of families needed of 67 with the "TDT power...
Ngày tải lên: 09/08/2014, 01:22
Báo cáo y học: "No evidence of major effects in several Toll-like receptor gene polymorphisms in rheumatoid arthritis" ppt
... at position +3483 of the gene (+1 being at the beginning of exon instead of exon 2) SNP2 is a C/T polymorphism that constitutes a noncoding mutation, probably at position -1486 of the promoting ... of the promoting region 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 ... a minor participation of the gene; this encouraged us to keep a variance for the locus of 0.05 to 0.2 The power finally estimated was 80% for a number of families needed of 67 with the "TDT power...
Ngày tải lên: 09/08/2014, 13:22
Báo cáo y học: "The role of toll-like receptors in acute and chronic lung inflammation" pdf
... variant of MyD88 (MyD88s) [30], and the Page of 14 suppressor of cytokine signaling (SOCS1) [31] are responsible for modulation of intracellular TLR signaling In addition to TLRs, a variety of other ... 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, ... [43,57,58] In this review we will focus on the contribution of TLR signaling to a subset of clinically relevant causes of ALI Non-infectious causes of ALI/ARDS Hemorrhagic shock (HS) is common in trauma...
Ngày tải lên: 11/08/2014, 03:20
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
... poly(I:C) induced secretion of this set of chemokines and cytokines is part of a pronounced Th1 response lead- Page 10 of 15 (page number not for citation purposes) Journal of Inflammation 2005, 2:16 ... changes of the gene expression of TLR3, TLR5 and TLR6 were observed by stimulation of SAEC with type-2 cytokines (data not shown) Page 11 of 15 (page number not for citation purposes) Journal of Inflammation ... of poly(I:C) stimulation followed by an elevated mRNA and protein expression of TLR1 after 24 h of stimulation The increased expression of TLR1 and TLR2 and the simultaneous down-regulation of...
Ngày tải lên: 11/08/2014, 08:21
Báo cáo y học: " Differential expression of Toll-like receptors on human alveolar macrophages and autologous peripheral monocytes" pdf
... expression profile of the TLRs on the alveolar macrophages and monocytes emerged Alveolar macrophages expressed lower levels of TLR2, comparable levels of TLR4, and higher levels of TLR9 than ... presence or absence of a variety of factors, including type and concentrations of cytokines and of additional proteins such as surfactant protein A [39] We also assessed the effects of TLR-specific ... medium, and used for flow cytometry and production of cell lysates for qRT-PCR Culture and TLR staining of HEK293 cells To assure specificity of binding of the TLR mABs, stably TLR-transfected human...
Ngày tải lên: 12/08/2014, 14:20
Báo cáo y học: "Trapped in a vicious loop: Toll-like receptors sustain the spontaneous cytokine production by rheumatoid synoviu" doc
... introduced concept of the involvement of TLRs in perpetuation of the chronic inflammatory loop in RA in which endogenous ligands serve as triggers Unraveling the divergent functions of these receptors ... WB: Stimulation of TLR2 and TLR4 differentially skews the balance of T cells in a mouse model of arthritis J Clin Invest 2008, 118:205-216 Abdollahi-Roodsaz S, Joosten LA, Roelofs MF, Radstake ... http://arthritis-research.com/content/13/2/105 models of rheumatoid arthritis: a comparison with IL-1 and TNF blockade Paper presented at: 73rd Annual Scientific Meeting of the American College of Rheumatology/Association of Rheumatology...
Ngày tải lên: 12/08/2014, 15:22
Báo cáo y học: " Toll-like receptors in cellular subsets of human tonsil T cells: altered expression during recurrent tonsillitis" ppsx
... consisted of 21 patients who underwent tonsillectomy because of tonsillar hyperplasia (no history of recurrent tonsillitis, negative cultivation test) None of the patients displayed symptoms of acute ... significant Results Expression pattern of TLR1-TLR10 in subsets of human T cells Analysis of TLRs in T cells requires removal of contaminating cells expressing high levels of TLRs, such as monocytes, B ... 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 surgery) of...
Ngày tải lên: 12/08/2014, 16:20
Báo cáo y học: " Science review: Key inflammatory and stress pathways in critical illness – the central role of the Toll-like receptors" ppsx
... 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 discoveries in ... receptors are of two types The p55 TNF receptor, which is responsible for most of the toxicity of TNF, has a death domain and as such is involved in activation of the caspase cascade by means of intermediate ... ‘intended’ function of TNF, acting at short range, probably entails recruitment and activation of neutrophils, ‘walling off’ of an infectious focus, and local upregulation of antigen presenting...
Ngày tải lên: 12/08/2014, 19:21
The role of downstream of kinase (DOK) 3 in toll like receptor signalling
... form of protein post- translational modification, of which either leads to degradation of target protein via the proteasome or mediates activation by ubiquitin-mediated scaffold assembly of target ... The engagement of the pathogen by innate immune receptors leads to an activation of a wide array of signal transduction pathways that are essential in the production of a range of cytokines and ... all of their love and support iv TABLE OF CONTENTS TABLE OF CONTENTS DECLARATION ii ACKNOWLEDGMENT iii TABLE OF CONTENTS v SUMMARY viii LIST OF...
Ngày tải lên: 09/09/2015, 10:16
báo cáo hóa học: " Toll-like receptors in cerebral ischemic inflammatory injury" pdf
... relevance of TLR signaling in ischemic stroke, it has not enabled an understanding of the role of TLR signaling in specific cell types This issue is of great importance because the pathology of ischemic ... consequence of the differing genetic backgrounds of the transgenic mice The role of HMGB1 in cerebral ischemia The TLR endogenous ligand HMGB1 has been very recently implicated in the mechanism of ischemic ... capable of distinguishing “self” from “nonself “ [6] Microglia, the resident immune cells of the CNS, are sensitive sensors of events occurring within their environment and provide the first line of...
Ngày tải lên: 19/06/2014, 22:20
Báo cáo y học: "Toll-like receptors and innate immune responses in systemic lupus" docx
... models of autoimmunity The importance of TLR activation has been studied in several animal models of lupus In the MRL/lpr mouse, deletion of the fas gene leads spontaneously to the development of ... lupus erythematosus The parallel discoveries of the role of TLRs in stimulating type I IFNs, of pDCs as the primary source of this cytokine, and of the IFN-signature in lupus patients by microarray ... by microarray analyses of gene expression of leukocytes from lupus patients [37,38] Leukocytes from lupus patients exhibit highly increased expression of a wide variety of genes that are known...
Ngày tải lên: 09/08/2014, 10:21
Báo cáo y học: "Toll-like receptors and NOD-like receptors in rheumatic diseases" pdf
... al The Scientific Basis of Rheumatology: A Decade of Progress This article is part of a special collection of reviews, The Scientific Basis of Rheumatology: A Decade of Progress, published to ... T, Chan JH, Guiducci C, Coffman RL: Treatment of lupus-prone mice with a dual inhibitor of TLR7 and TLR9 leads to reduction of autoantibody production and amelioration of disease symptoms Eur ... time of the tick bite, and is associated with invasion of the joint tissue by spirochetes Immune responses of the host toward B burgdorferi are predominantly mediated by the recognition of proteins...
Ngày tải lên: 09/08/2014, 14:21
Báo cáo y học: " Gut flora enhance bacterial clearance in lung through toll-like receptors 4" docx
... unit of MPO activity was defined Page of as the amount of enzyme that reduces μmole of peroxide per and the data were expressed as units per gram of lung tissue (Units/g tissue) Processing of lung ... μl each of the sense and antisense primers (0.5 mg/ml), 100 ng to 150 ng of the cDNA template and an appropriate amount of water to make a total volume of 15 μl After adding 0.075 μl of TaKaRa ... at week At the end of the 4th week, alveolar macrophages of animals were harvested for the bacterial killing activity assay Experiment To examine the role of commensal microflora on E.coli pneumonia-induced...
Ngày tải lên: 10/08/2014, 10:20