Clonal expansion across the seas as seen through CPLP-TB database: A joint effort in cataloguing Mycobacterium tuberculosis genetic diversity in Portuguese-speaking countries
Reis, Ana J.
Scaini, João L.
Silva, Ana B.
e Silva, José Lapa
Clark, Taane G.
von Groll, Andrea
Dalla-Costa, Elis R.
Rossetti, Maria Lúcia
da Silva, Pedro E.A.
KAUST DepartmentBiological and Environmental Sciences and Engineering (BESE) Division
Pathogen Genomics Laboratory
KAUST Grant NumberBAS/1/1020-01-01
Online Publication Date2018-03-18
Print Publication Date2018-03
Permanent link to this recordhttp://hdl.handle.net/10754/627361
MetadataShow full item record
AbstractTuberculosis (TB) remains a major health problem within the Community of Portuguese Language Speaking Countries (CPLP). Despite the marked variation in TB incidence across its member-states and continued human migratory flux between countries, a considerable gap in the knowledge on the Mycobacterium tuberculosis population structure and strain circulation between the countries still exists. To address this, we have assembled and analysed the largest CPLP M. tuberculosis molecular and drug susceptibility dataset, comprised by a total of 1447 clinical isolates, including 423 multidrug-resistant isolates, from five CPLP countries. The data herein presented reinforces Latin American and Mediterranean (LAM) strains as the hallmark of M. tuberculosis populational structure in the CPLP coupled with country-specific differential prevalence of minor clades. Moreover, using high-resolution typing by 24-loci MIRU-VNTR, six cross-border genetic clusters were detected, thus supporting recent clonal expansion across the Lusophone space.To make this data available to the scientific community and public health authorities we developed CPLP-TB (available at http://cplp-tb.ff.ulisboa.pt), an online database coupled with web-based tools for exploratory data analysis. As a public health tool, it is expected to contribute to improved knowledge on the M. tuberculosis population structure and strain circulation within the CPLP, thus supporting the risk assessment of strain-specific trends.
CitationPerdigão J, Silva C, Diniz J, Pereira C, Machado D, et al. (2018) Clonal expansion across the seas as seen through CPLP-TB database: A joint effort in cataloguing Mycobacterium tuberculosis genetic diversity in Portuguese-speaking countries. Infection, Genetics and Evolution. Available: http://dx.doi.org/10.1016/j.meegid.2018.03.011.
SponsorsFinancial support was provided by the European Society of Clinical Microbiology and Infectious Diseases, for which we would like to would like to acknowledge the Study Group for Mycobacterial Infections; Fundação CAPES [PVE-CAPES. 88881.064961/2014-01- Jose R. Lapa e Silva/UFRJ coordinator]; Genotyping and susceptibility profile of Mycobacterium tuberculosis clinical isolates from Rio Grande, Brazil were funded by Apoio a Projetos de Pesquisa em Doenças Negligenciadas, Brazil/MCTI/CNPq/MS-SCTIE – Decit [404081/2012-6] and by Programa Pesquisa para o SUS – PPSUS - FAPERGS/MS/CNPq/SESRS [1193-2551/13-6]; MIRU-VNTR typing and spoligotyping of Mycobacterium tuberculosis clinical isolates from Porto Alegre, Brazil were funded by National Council of Research [CNPq/MCTI/Universal - Project number: 441499/2014-7]; Fundação para a Ciência e a Tecnologia (FCT) Portugal [PTDC/SAU-EPI/122400/2010], part of the EDCTP2 program supported by the European Union; Fundação Calouste Gulbenkian, Portugal [Project ref. P-99934]. JP was supported by a post doc fellowship from project [PTDC/SAU-EPI/122400/2010] and by fellowship [SFRH/BPD/95406/2013] from FCT. The phylogenetic analysis work at Nalin Rastogi's lab was supported by a FEDER grant financed by the European Union and Guadeloupe Region (Programme Opérationnel FEDER-Guadeloupe-Conseil Régional 2014-2020, Grant number 2015-FED-192). IM was supported by Russian Science Foundation (grant 14-14-00292). AP was supported by a faculty baseline funding from KAUST [BAS/1/1020-01-01]. DM was supported by FCT fellowship [SFRH/BPD/100688/2014] and DM, IC MV are thankful to [GHTM UID/Multi/04413/20139] from FCT and to projects “ForDILAB-TB” and “A implementação de um novo método de identificação rápida do complexo M. tuberculosis nos Laboratórios de Referência da Tuberculose de Maputo e Beira” from Fundação Calouste Gulbenkian and the Community of the Portuguese Speaking Countries (CPLP). CS was supported by FCT [SFRH/BD/73579/2010]. TC is funded by the Medical Research Council UK (Grant no. MR/K000551/1 and MR/M01360X/1, MR/N010469/1, MC_PC_15103).
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Interplay of alternative conjugated pathways and steric interactions on the electronic and optical properties of donor-acceptor conjugated polymersLima, Igo T.; Risko, Chad; Aziz, Saadullah Gary; Da Silva Filho, Demétrio A Da Silva; Bredas, Jean-Luc (J. Mater. Chem. C, Royal Society of Chemistry (RSC), 2014) [Article]Donor-acceptor π-conjugated copolymers are of interest for a wide range of electronic applications, including field-effect transistors and solar cells. Here, we present a density functional theory (DFT) study of the impact of varying the conjugation pathway on the geometric, electronic, and optical properties of donor-acceptor systems. We consider both linear ("in series"), traditional conjugation among the donor-acceptor moieties versus structures where the acceptor units are appended orthogonally to the linear, donor-only conjugated backbone. Long-range-corrected hybrid functionals are used in the investigation with the values of the tuned long-range separation parameters providing an estimate of the extent of conjugation as a function of the oligomer architecture. Considerable differences in the electronic and optical properties are determined as a function of the nature of the conjugation pathway, features that should be taken into account in the design of donor-acceptor copolymers.
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