Produção e caracterização de MPB70 de Mycobacterium bovis para uso em imunodiagnóstico.

Demonstrou-se a produção e caracterização de MPB70 recombinante de M. bovis.bitstream/CNPGC-2010/13223/1/COT119.pd

A decade of innovation to deepen the understanding of infectious diseases of poverty and foster their control and elimination

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Diets containing sea cucumber (Isostichopus badionotus) meals are hypocholesterolemic in young rats

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Measurement of the cross-section and charge asymmetry of WW bosons produced in proton-proton collisions at s=8\sqrt{s}=8 TeV with the ATLAS detector

This paper presents measurements of the $W^+ \rightarrow \mu^+\nu$ and $W^- \rightarrow \mu^-\nu$ cross-sections and the associated charge asymmetry as a function of the absolute pseudorapidity of the decay muon. The data were collected in proton--proton collisions at a centre-of-mass energy of 8 TeV with the ATLAS experiment at the LHC and correspond to a total integrated luminosity of 20.2~\mbox{fb^{-1}}. The precision of the cross-section measurements varies between 0.8% to 1.5% as a function of the pseudorapidity, excluding the 1.9% uncertainty on the integrated luminosity. The charge asymmetry is measured with an uncertainty between 0.002 and 0.003. The results are compared with predictions based on next-to-next-to-leading-order calculations with various parton distribution functions and have the sensitivity to discriminate between them.Comment: 38 pages in total, author list starting page 22, 5 figures, 4 tables, submitted to EPJC. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-13

Absence of Fas-L aggravates renal injury in acute Trypanosoma cruzi infection

Trypanosoma cruzi infection induces diverse alterations in immunocompetent cells and organs, myocarditis and congestive heart failure. However, the physiological network of disturbances imposed by the infection has not been addressed thoroughly. Regarding myocarditis induced by the infection, we observed in our previous work that Fas-L-/- mice (gld/gld) have very mild inflammatory infiltration when compared to BALB/c mice. However, all mice from both lineages die in the early acute phase. Therefore, in this work we studied the physiological connection relating arterial pressure, renal function/damage and cardiac insufficiency as causes of death. Our results show that a broader set of dysfunctions that could be classified as a cardio/anaemic/renal syndrome is more likely responsible for cardiac failure and death in both lineages. However, gld/gld mice had very early glomerular deposition of IgM and a more intense renal inflammatory response with reduced renal filtration, which is probably responsible for the premature death in the absence of significant myocarditis in gld/gld.Instituto Oswaldo Cruz-Fiocruz Laboratório de Biologia CelularUniversidade Federal do Rio de Janeiro Instituto de Biofísica Carlos Chagas FilhoUniversidade Federal Fluminense Instituto Biomédico Departamento de Fisiologia e FarmacologiaUniversidade Federal de São Paulo (UNIFESP) Escola Paulista de Medicina Disciplina de NefrologiaCentro de Criação de Animais de Laboratório Departamento de Controle de Qualidade AnimalUNIFESP, EPM, Disciplina de NefrologiaSciEL

Search for chargino-neutralino production with mass splittings near the electroweak scale in three-lepton final states in √s=13 TeV pp collisions with the ATLAS detector

A search for supersymmetry through the pair production of electroweakinos with mass splittings near the electroweak scale and decaying via on-shell W and Z bosons is presented for a three-lepton final state. The analyzed proton-proton collision data taken at a center-of-mass energy of √s=13  TeV were collected between 2015 and 2018 by the ATLAS experiment at the Large Hadron Collider, corresponding to an integrated luminosity of 139  fb−1. A search, emulating the recursive jigsaw reconstruction technique with easily reproducible laboratory-frame variables, is performed. The two excesses observed in the 2015–2016 data recursive jigsaw analysis in the low-mass three-lepton phase space are reproduced. Results with the full data set are in agreement with the Standard Model expectations. They are interpreted to set exclusion limits at the 95% confidence level on simplified models of chargino-neutralino pair production for masses up to 345 GeV

Search for new phenomena in final states with an energetic jet and large missing transverse momentum in pp collisions at √ s = 8 TeV with the ATLAS detector

Results of a search for new phenomena in final states with an energetic jet and large missing transverse momentum are reported. The search uses 20.3 fb−1 of √ s = 8 TeV data collected in 2012 with the ATLAS detector at the LHC. Events are required to have at least one jet with pT > 120 GeV and no leptons. Nine signal regions are considered with increasing missing transverse momentum requirements between Emiss T > 150 GeV and Emiss T > 700 GeV. Good agreement is observed between the number of events in data and Standard Model expectations. The results are translated into exclusion limits on models with either large extra spatial dimensions, pair production of weakly interacting dark matter candidates, or production of very light gravitinos in a gauge-mediated supersymmetric model. In addition, limits on the production of an invisibly decaying Higgs-like boson leading to similar topologies in the final state are presente

Diagnóstico molecular de Mycobacterium spp. em lesões sugestivas de tuberculose bovina.

O objetivo deste estudo é desenvolver um teste de diagnóstico rápido de reação em cadeia da polimerase (PCR) em tempo real diretamente de lesões post mortem sugestivas de tuberculose, que permita a detecção e diferenciação de micobactérias dos complexos M. tuberculosis, M. avium e outras micobactérias não tuberculosas de interesse médico-veterinário

Produção de proteínas recombinantes para avaliação de resposta celular contra Mycobacterium bovis.

Tuberculose bovina é uma enfermidade infecciosa, causada pela bactéria Mycobacterium bovis. Esta enfermidade tem acometido rebanhos de vários países, inclusive do Brasil, causando problemas econômicos e de saúde pública. Animais infectados com M. bovis, primariamente, apresentam resposta imune celular e, devido a isso, o teste intradérmico com PPD (Purified Protein Derivative) é amplamente utilizado nos programas de controle da doença. Entretanto, a tuberculinização possui algumas desvantagens, como a detecção de reações cruzadas e necessidade de imobilização dos animais em dois momentos distintos. Além disso, bovinos submetidos à intradermorreação tornam-se temporariamente anérgicos, e em casos de reações inconclusivas, não podem ser re-testados por pelo menos 60 dias. Uma forma de minimizar esses problemas é o desenvolvimento de testes de diagnósticos in vitro, nos quais a capacidade de antígenos estimularem a liberação de citocinas é mensurada. O objetivo deste trabalho foi produzir as proteínas PE5 e ESAT-6 de M. bovis em sistema heterólogo de expressão para posterior avaliação da indução de resposta celular de bovinos. Os genes pe5 e esat-6 foram amplificados por PCR (Polymerase Chain Reaction), clonados em plasmídeo pGEM-T Easy e subclonados em plasmídeo pRSet-C. A expressão dos genes foi verificada por eletroforese em gel de SDS-poliacrilamida, bem como por Western blot com anticorpo monoclonal anti-histidina. Foi possível observar proteínas de 15 e 16 kDa, que correspondem, respectivamente, às massas moleculares estimadas das proteínas recombinantes PE5 e ESAT-6 fusionadas a cauda de histidina. No Western blot, as proteínas recombinantes foram reconhecidas pelo anticorpo monoclonal. ESAT-6 é um dos antígenos de M. bovis mais bem documentados, demonstrando sensibilidade de moderada a alta em diversos testes de diagnóstico e a proteína PE-5 demonstrou anteriormente alta especificidade. Portanto, a utilização destas proteínas, individualmente ou em conjunto, poderá incrementar o diagnóstico da tuberculose bovina em testes de tuberculinização intradérmica e de dosagem de interferon-γ