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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Ocorrência e detecção molecular de espécies de Mycobacterium, e dos genes de virulência vapA, vapB e VapN em linhagens de Rhodococcus equi, isoladas de linfonodos de taiassuídeos de cativeiro / Occurrence and molecular detection of Mycobacterium species, and the virulence-associated proteins (vapA, vapB and vapN genes) in strains of Rhodococcus equi, isolated from the lymph nodes of captive Tayassuidae species

Morais, Amanda Bonalume Cordeiro de [UNESP] 14 July 2017 (has links)
Submitted by AMANDA BONALUME CORDEIRO DE MORAIS null (amandabonalume@gmail.com) on 2017-08-26T23:21:44Z No. of bitstreams: 1 Tese de Doutorado - Amanda Bonalume Cordeiro de Morais.pdf: 1450434 bytes, checksum: f33cf08ef7c061d673fbb609f96c4bb3 (MD5) / Approved for entry into archive by Luiz Galeffi (luizgaleffi@gmail.com) on 2017-08-29T14:13:48Z (GMT) No. of bitstreams: 1 morais_abc_dr_bot.pdf: 1450434 bytes, checksum: f33cf08ef7c061d673fbb609f96c4bb3 (MD5) / Made available in DSpace on 2017-08-29T14:13:48Z (GMT). No. of bitstreams: 1 morais_abc_dr_bot.pdf: 1450434 bytes, checksum: f33cf08ef7c061d673fbb609f96c4bb3 (MD5) Previous issue date: 2017-07-14 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Foram investigadas, neste estudo, proteínas associadas à virulência (genes vapA, vapB e vapN) das espécies de Rhodococcus equi e Micobactérias isoladas de 330 linfonodos de catetos (Tayassu tajacu) e queixadas (Tayassu pecari) destinados ao consumo humano. Trinta e seis (10,9%) linhagens de R. equi foram isoladas, 3,3% (11/330) dos linfonodos de queixadas e 7,6% (25/330) dos catetos. Entre os 11 isolados de R. equi das queixadas, 90,9% (n=10/11) foram obtidos de linfonodos mesentéricos e apenas 9,1% (n=1/10) de linfonodo mediastínico. Nos 25 isolados de R. equi dos catetos, 40,0% (10/25) foram obtidos de linfonodos mesentéricos, 36,0% (9/25) de submandibulares e 24,0% (6/25) de mediastínicos. Não foram identificados genes vapA, vapB e vapN entre os isolados de R. equi. Foi isolado Mycobacterium sp. de 3,03% (10/330) do total de linfonodos. Entre os 10 isolados de micobactérias, 60% (n=6/10) dos linfonodos eram de queixadas e 40% (4/10) de catetos. Dez espécies de Mycobacterium foram detectadas por PCR-PRA, com predominância de M. avium tipo 1. O sequenciamento dos genes hsp65 e rpob revelaram micobactérias saprófitas (M. sinense, M. kumamotonense) e potencialmente patogênicas (M. colombiense, M. intracellulare) para humanos e animais. Esta é a primeira descrição de R. equi e / ou espécies de micobactérias identificadas nos linfonodos de espécimes de Tayassuideos. Apesar da ausência de genes Vap, a identificação de R. equi, bem como de micobactérias não tuberculosas e saprófitas, destacam o risco de transmissão desses patógenos das espécies de Tayassuideos para humanos por meio de carne ou produtos à base de carne contaminados com conteúdo de linfonodos, uma vez que R. equi sem plasmídeo de virulência e as espécies de micbactérias descritas aqui já foram relatadas como causas de infecções pulmonares e extrapulmonares em seres humanos imunocompetentes e imunocomprometidos. / Virulence-associated proteins (vapA, vapB and vapN genes) of Rhodococcus equi and Mycobacterium species isolated from 330 lymph nodes of collared peccaries (Tayassu tajacu) and white-lipped peccaries (Tayassu pecari) intended for human consumption were investigated. Thirty-six (10.9%) R. equi strains were isolated, 3.3% (11/330) from white-lipped peccary and 7.6% (25/330) of collared peccary lymph nodes. Among the 11 isolates of R. equi of the white-lipped peccaries, 90.9% (n = 10/11) were obtained from mesenteric lymph nodes and only 9.1% (n = 1/10) of the mediastinal lymph node. In the 25 isolates of R. equi obtained from collared peccaries, 40.0% (10/25) were recovered from mesenteric lymph nodes, 36% (9/25) from submandibular, and 24.0% (6/25) from mediastinal ones. No vapA, vapB, and vapN genes (plasmidless type) were identified among R. equi isolates. Mycobacterium sp. was isolated in 3.03% (10/330) of all lymph nodes analyzed. Among the 10 mycobacterial isolates, 60% (n = 6/10) were from white-lipped peccary, and 40% (4/10) from collared peccary lymph nodes. Ten Mycobacterium species were detected by PCR-PRA, with predominance of M. avium type 1. Sequencing of hsp65 and rpob genes revealed mycobacteria that were saprophytic (M. sinense, M. kumamotonense) and potentially pathogenic (M. colombiense, M. intracellulare) to humans and animals. To our knowledge, this is the first description of R. equi and/or mycobacteria species identified in the lymph nodes of Tayassuid specimens. Despite the absence of Vap genes, the identification of R. equi, as well as nontuberculous and saprophytic mycobacteria highlight the risk of transmission of these pathogens from Tayassuidae species to humans by means of meat or meat products contaminated with lymph node contents, since R. equi plasmidless type and mycobacterial species described here have been reported as causes of pulmonary and extrapulmonary infections both in immunocompetent and immunocompromised humans.
2

Increasing ecological realism in conservation network design / a case study in Belize and an evaluation of global satellite telemetry for connectivity research

Hofman, Maarten 15 May 2017 (has links)
No description available.

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