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151.
Ranjith-Kumar CT Miller W Xiong J Russell WK Lamb R Santos J Duffy KE Cleveland L Park M Bhardwaj K Wu Z Russell DH Sarisky RT Mbow ML Kao CC 《The Journal of biological chemistry》2007,282(10):7668-7678
The structure of the human Toll-like receptor 3 (TLR3) ectodomain (ECD) was recently solved by x-ray crystallography, leading to a number of models concerning TLR3 function (Choe, J., Kelker, M. S., and Wilson, I. A. (2005) Science 309, 581-585; Bell, J. K., Botos, I., Hall, P. R., Askins, J., Shiloach, J., Segal, D. M., and Davies, D. R. (2005) Proc. Natl. Acad. Sci. U. S. A. 102, 10976-10980) The structure revealed four pairs of cysteines that are putatively involved in disulfide bond formation, several residues that are predicted to be involved in dimerization between ECD subunits, and surfaces that could bind to poly(I:C). In addition, there are two loops that protrude from the central solenoid structure of the protein. We examined the recombinant TLR3 ECD for disulfide bond formation, poly(I:C) binding, and protein-protein interaction. We also made over 80 mutations in the residues that could affect these features in the full-length TLR3 and examined their effects in TLR3-mediated NF-kappaB activation. A number of mutations that affected TLR3 activity also affected the ability to act as dominant negative inhibitors of wild type TLR3. Loss of putative RNA binding did not necessarily affect dominant negative activity. All of the results support a model where a dimer of TLR3 is the form that binds RNA and activates signal transduction. 相似文献
152.
E. Lamine R. Bastide M. Bouet P. Gaborit D. Gourc F. Marmier H. Pingaud M. Schneider F. Toumani 《IRBM》2019,40(1):25-37
Background
Due to the rising demand in home healthcare services in France as well as in other European countries, homecare organizations are facing challenges in terms of coordination and continuity of care. In both cases, the problem is linked to the efficiency in which care interventions are distributed and managed among the different participants involved in home care processes. Project Plas'O'Soins which was developed within the framework of the French research program TecSan, aims to address these contemporary problems by providing an interactive ICT platform to improve coordination and continuity of care within homecare organizations.Main achievements
Plas'O'Soins, the software platform we designed, supports care specification as well as planning and monitoring of the care plans. It allows the modeling of care plans using a dedicated Domain Specific Language, the scheduling of care operations taking into account the human resources, the medical constraints and the geographical distribution of patients, and the monitoring of the execution of the operations by the care actors. This software platform enables the coordination of activities and the communication between actors and reacts to unforeseen events and produces dashboards in order to quantify the effectiveness of the processes.Conclusion
The software platform has been deployed and used in an experimental setting by homecare partner organizations, providing valuable insights on the organizational changes required by the introduction of such an ICT solution in the actual practice of homecare. 相似文献153.
Styring Amy K. Diop Amadou M. Bogaard Amy Champion Louis Fuller Dorian Q. Gestrich Nikolas Macdonald Kevin C. Neumann Katharina 《Vegetation History and Archaeobotany》2019,28(6):663-678
Vegetation History and Archaeobotany - The nitrogen isotope compositions of charred wheat and barley grains reflect manuring intensity and have been used to reconstruct past manuring practices at... 相似文献
154.
Duffy KE Lamb RJ San Mateo LR Jordan JL Canziani G Brigham-Burke M Korteweg J Cunningham M Beck HS Carton J Giles-Komar J Duchala C Sarisky RT Mbow ML 《Cellular immunology》2007,248(2):103-114
Toll-like receptors are a family of pattern-recognition receptors that contribute to the innate immune response. Toll-like receptor 3 (TLR3) signals in response to foreign, endogenous and synthetic ligands including viral dsRNA, bacterial RNA, mitochondrial RNA, endogenous necrotic cell mRNA and the synthetic dsRNA analog, poly(I:C). We have generated a monoclonal antibody (mAb CNTO2424) that recognizes the extracellular domain (ECD) of human TLR3 in a conformation-dependent manner. CNTO2424 down-regulates poly(I:C)-induced production of IL-6, IL-8, MCP-1, RANTES, and IP-10 in human lung epithelial cells. In addition, mAb CNTO2424 was able to interfere with the known TLR3-dependent signaling pathways, namely NF-κB, IRF-3/ISRE, and p38 MAPK. The generation of this neutralizing anti-TLR3 mAb provides a unique tool to better understand TLR3 signaling and potential cross-talk between TLR3 and other molecules. 相似文献
155.
156.
Siddhartha S. Saha Divyendu Singh Ernest L. Raymond Rajkumar Ganesan Gary Caviness Christine Grimaldi Joseph R. Woska Jr. Detlev Mennerich Su-Ellen Brown M. Lamine Mbow C. Cheng Kao 《The Journal of biological chemistry》2015,290(39):23997-24006
Improper signaling of the IL-36 receptor (IL-36R), a member of the IL-1 receptor family, has been associated with various inflammation-associated diseases. However, the requirements for IL-36R signal transduction remain poorly characterized. This work seeks to define the requirements for IL-36R signaling and intracellular trafficking. In the absence of cognate agonists, IL-36R was endocytosed and recycled to the plasma membrane. In the presence of IL-36, IL-36R increased accumulation in LAMP1+ lysosomes. Endocytosis predominantly used a clathrin-mediated pathway, and the accumulation of the IL-36R in lysosomes did not result in increased receptor turnover. The ubiquitin-binding Tollip protein contributed to IL-36R signaling and increased the accumulation of both subunits of the IL-36R. 相似文献
157.
Mamadou Lamine Fall David Mathieu Tremblay Mélanie Gobeil-Richard Julie Couillard Hélène Rocheleau Hervé Van der Heyden Camile André Lévesque Carole Beaulieu Odile Carisse 《PloS one》2015,10(8)
The presence and abundance of pathogen inoculum is with host resistance and environmental conditions a key factor in epidemic development. Therefore, several spore-sampling devices have been proposed to monitor pathogen inoculum above fields. However, to make spore sampling more reliable as a management tool and to facilitate its adoption, information on infection efficiency and molecular tools for estimating airborne sporangia concentration are needed. Experiments were thus undertaken in a growth chamber to study the infection efficiency of four clonal lineages of P. infestans (US-8, US-11, US-23, and US-24) by measuring the airborne sporangia concentration and resulting disease intensity. The relationship between the airborne sporangia concentration and the number of lesions per leaf was exponential. For the same concentration, the sporangia of US-23 caused significantly more lesions than the sporangia of the other clonal lineages did. Under optimal conditions, an airborne sporangia concentration of 10 sporangia m−3 for US-23 was sufficient to cause one lesion per leaf, whereas for the other clonal lineages, it took 15 to 25 sporangia m−3 to reach the same disease intensity. However, in terms of diseased leaf area, there was no difference between clonal lineages US-8, US-23 and US-24. Also, a sensitive quantitative real-time polymerase chain reaction (qPCR) tool was developed to quantify P. infestans airborne sporangia with detection sensitivity of one sporangium. The specificity of the qPCR assay was rigorously tested for airborne inoculum and was either similar to, or an improvement on, other published PCR assays. This assay allows rapid and reliable detection and quantification of P. infestans airborne sporangia and thereby, facilitates the implementation of spores-sampling network. 相似文献
158.
Piero L. Olliaro Michel Vaillant A?ssatou Diawara Jean T. Coulibaly Amadou Garba Jennifer Keiser Charles H. King Stefanie Knopp Aly Landouré Eliézer K. N’Goran Giovanna Raso Alexandra U. Scherrer José Carlos Sousa-Figueiredo Katarina Stete Xiao-Nong Zhou Jürg Utzinger 《PLoS neglected tropical diseases》2015,9(6)
BackgroundThe control of schistosomiasis emphasizes preventive chemotherapy with praziquantel, which aims at decreasing infection intensity and thus morbidity in individuals, as well as transmission in communities. Standardizing methods to assess treatment efficacy is important to compare trial outcomes across settings, and to monitor program effectiveness consistently. We compared customary methods and looked at possible complementary approaches in order to derive suggestions for standardizing outcome measures.Conclusions/SignificanceArithmetic mean calculations of Schistosoma ERR are more sensitive and therefore more appropriate to monitor drug performance than geometric means. However, neither are satisfactory to identify poor responders. Group-based response estimated by arithmetic mean and the distribution of individual ERRs are correlated, but the latter appears to be more apt to detect the presence and to quantitate the magnitude of suboptimal responses to praziquantel. 相似文献
159.
160.
Riviere T Diedhiou AG Diabate M Senthilarasu G Natarajan K Verbeken A Buyck B Dreyfus B Bena G Ba AM 《Mycorrhiza》2007,17(5):415-428
Ectomycorrhizal (ECM) fungi have a worldwide distribution. However, the ecology of tropical ECM fungi is poorly documented,
limiting our understanding of the symbiotic associations between tropical plants and fungi. ECM Basidiomycete diversity was
investigated for the first time in two tropical rain forests in Africa (Western Upper Guinea) and in Asia (Western Ghats,
India), using a fragment of the mitochondrial large subunit rRNA gene to type 140 sporocarps and 54 ectomycorrhizas. To evaluate
taxonomic diversity, phylogenetic analyses were performed, and 40 sequences included from identified European specimens were
used as taxonomic benchmarks. Five clades were recovered corresponding to six taxonomic groups: boletoids, sclerodermatoids,
russuloids, thelephoroids, and a clade grouping the Amanitaceae and Tricholomataceae families. Our results revealed that the
Russulaceae species display a great diversity with several putative new species, especially in Guinea. Other taxonomic issues
at family/section levels are also briefly discussed. This study provides preliminary insights into taxonomic diversity, ECM
status, and biogeographic patterns of ECM fungi in tropical two rain forest ecosystems, which appear to be as diverse as in
temperate and boreal forests. 相似文献