8 documents found, page 1 of 1
CPLP-TB:
Perdigão, João; Silva, Carla; Diniz, Jaciara; Pereira, Catarina; Machado, Diana; Ramos, Jorge; Silva, Hugo; Abilleira , Fernanda; Brum, ClariceA Tuberculose (TB) permanece um grave problema de saúde pública na Comunidade dos Países de Língua Portuguesa (CPLP). Apesar da ampla variância da incidência da TB nos seus estados-membro e de um fluxo migratório contínuo entre os países que integram este grupo, existe uma enorme lacuna no que diz respeito ao conhecimento da estrutura populacional conjunta do Mycobacterium tuberculosis e circulação de estirpes ...
Recombination in pe/ppe genes contributes to genetic variation in Mycobacterium...
Phelan, Jody E.; Coll, Francesc; Bergval, Indra; Anthony, Richard M.; Warren, Rob; Sampson, Samantha L.; Gey van Pittius, Nicolaas C.; Glynn, Judith R.Background: Approximately 10 % of the Mycobacterium tuberculosis genome is made up of two families of genes that are poorly characterized due to their high GC content and highly repetitive nature. The PE and PPE families are typified by their highly conserved N-terminal domains that incorporate proline-glutamate (PE) and proline-proline-glutamate (PPE) signature motifs. They are hypothesised to be important vir...
Multidrug-resistant mycobacterium tuberculosis of the Latin American mediterran...
Dalla Costa, Elis R.; Vasconcelos, Sidra E G; Esteves, Leonardo S.; Gomes, Harrison M.; Gomes, Lia L.; Da Silva, Pedro Almeida; Perdigão, JoãoPMID: 26400784 WOS:000367532800016; We recently detected the spoligotype patterns of strains of Mycobacterium pinnipedii, a species of the Mycobacterium tuberculosis complex, in sputum samples from nine cases with pulmonary tuberculosis residing in Porto Alegre, South Brazil. Because this species is rarely encountered in humans, we further characterized these nine isolates by additional genotyping techniques, i...
Rapid determination of anti-tuberculosis drug resistance from whole-genome sequ...
Coll, Francesc; McNerney, Ruth; Preston, Mark D.; Guerra-Assunção, José Afonso; Warry, Andrew; Hill-Cawthorne, Grant; Mallard, Kim; Nair, MridulPMID: 26019726 WOS:000355073700001; Mycobacterium tuberculosis drug resistance (DR) challenges effective tuberculosis disease control. Current molecular tests examine limited numbers of mutations, and although whole genome sequencing approaches could fully characterise DR, data complexity has restricted their clinical application. A library (1,325 mutations) predictive of DR for 15 anti-tuberculosis drugs was c...
Rapid determination of antituberculosis drug resistance from wholegenome sequen...
Coll, Francesc; McNerney, Ruth; Preston, Mark D.; Guerra-Assunção, José Afonso; Warry, Andrew; Hill-Cawthorne, Grant; Mallard, Kim; Nair, MridulMycobacterium tuberculosis drug resistance (DR) challenges effective tuberculosis disease control. Current molecular tests examine limited numbers of mutations, and although whole genome sequencing approaches could fully characterise DR, data complexity has restricted their clinical application. A library (1,325 mutations) predictive of DR for 15 anti-tuberculosis drugs was compiled and validated for 11 of them...
A robust SNP barcode for typing Mycobacterium tuberculosis complex strains
Coll, Francesc; McNerney, Ruth; Guerra-Assunção, José Afonso; Glynn, Judith R.; Perdigão, João; Viveiros, Miguel; Portugal, Isabel; Pain, ArnabPMID:25176035 WOS:000342929000002; Strain-specific genomic diversity in the Mycobacterium tuberculosis complex (MTBC) is an important factor in pathogenesis that may affect virulence, transmissibility, host response and emergence of drug resistance. Several systems have been proposed to classify MTBC strains into distinct lineages and families. Here, we investigate single-nucleotide polymorphisms (SNPs) as robu...
Unraveling Mycobacterium tuberculosis genomic diversity and evolution in Lisbon...
Perdigão, João; Silva, Hugo; Machado, Diana; Macedo, Rita; Maltez, Fernando; Silva, Carla; Jordao, Luisa; Couto, Isabel; Mallard, Kim; Coll, FrancescBACKGROUND: Multidrug- (MDR) and extensively drug resistant (XDR) tuberculosis (TB) presents a challenge to disease control and elimination goals. In Lisbon, Portugal, specific and successful XDR-TB strains have been found in circulation for almost two decades. RESULTS: In the present study we have genotyped and sequenced the genomes of 56 Mycobacterium tuberculosis isolates recovered mostly from Lisbon. The ge...
Experimental evolution, genetic analysis and genome re-sequencing reveal the mu...
Hunt, Paul; Martinelli, Axel; Modrzynska, Katarzyna; Borges, Sofia; Creasey, Alison; Rodrigues, Louise; Beraldi, Dario; Loewe, LaurenceBackground: Classical and quantitative linkage analyses of genetic crosses have traditionally been used to map genes of interest, such as those conferring chloroquine or quinine resistance in malaria parasites. Next-generation sequencing technologies now present the possibility of determining genome-wide genetic variation at single base-pair resolution. Here, we combine in vivo experimental evolution, a rapid g...