Encontrados 6 documentos, a visualizar página 1 de 1
Evolution of the human immunodeficiency virus type 2 envelope in the first year...
Rocha, Cheila; Calado, Rita; Borrego, Pedro; Marcelino, José Maria; Bártolo, Inês; Rosado, Lino; Cavaco-Silva, Patrícia; Perpétua, Gomes"Background: Differently from HIV-1, HIV-2 disease progression usually takes decades without antiretroviral therapy and the majority of HIV-2 infected individuals survive as elite controllers with normal CD4+ T cell counts and low or undetectable plasma viral load. Neutralizing antibodies (Nabs) are thought to play a central role in HIV-2 evolution and pathogenesis. However, the dynamic of the Nab response and ...
Predictors of attrition and immunological failure in HIV- 1 patients on highly ...
Palladino, Claudia; Briz, Verónica; Bellón, José María; Bártolo, Inês; Carvalho, Patrícia; Camacho, Ricardo; Munõz-Fernandes, M. Ángeles; Bastos, Rui"In Mozambique, the evaluation of retention in HIV care and ART programmes is limited. To assess rate and predictors of attrition (no retention in care) and HAART effectiveness in HIV-1 infected patients who pay for medication and laboratory testing in Mozambique, we conducted a multicenter survey of HIV-1-infected patients who started HAART during 2002– 2006. Cox proportional hazard models were used to assess ...
Baseline susceptibility of primary HIV-2 to entry inhibitors
Borrego, Pedro; Calado, Rita; Marcelino, José M; Bártolo, Inês; Rocha, Cheila; Cavaco-Silva, Patrícia; Doroana, Manuela; Antunes, FranciscoBackground: The baseline susceptibility of primary HIV-2 to maraviroc (MVC) and other entry inhibitors is currently unknown. ; Methods: The susceptibility of 19 HIV-2 isolates obtained from asymptomatic and AIDS patients and seven HIV-1 clinical isolates to the fusion inhibitors enfuvirtide (ENF) and T-1249, and to the coreceptor antagonists AMD3100, TAK-779 and MVC, was measured using a TZM-bl cellbased assay...
Molecular epidemiology and evolution of HIV-1 in Portugal and portuguese speaki...
Bártolo, Inês Isabel Fernandes, 1975-Tese de doutoramento, Farmácia (Microbiologia), Universidade de Lisboa, Faculdade de Farmácia, 2011 ; The aims of this thesis were to better characterize HIV-1 diversity in Portugal, Angola, Mozambique and Cape Verde and to investigate the origin and epidemiological history of HIV-1 in these countries. The impact of these issues in diagnosis, disease progression and susceptibility to ARV therapy was also inves...
Evolutionary and Structural Features of the C2, V3 and C3 Envelope Regions Unde...
Barroso, Helena; Borrego, Pedro; Bártolo, Inês; Marcelino, José Maria; Família, Carlos; Quintas, Alexandre; Taveira, NunoBackground: Unlike in HIV-1 infection, the majority of HIV-2 patients produce broadly reactive neutralizing antibodies, control viral replication and survive as elite controllers. The identification of the molecular, structural and evolutionary footprints underlying these very distinct immunological and clinical outcomes may lead to the development of new strategies for the prevention and treatment of HIV infec...
Origin and Epidemiological History of HIV-1 CRF14_BG
Bártolo, Inês; Abecasis, Ana B.; Borrego, Pedro; Barroso, Helena; McCutchan, Francine; Gomes, Perpétua; Camacho, Ricardo; Taveira, NunoBackground: CRF14_BG isolates, originally found in Spain, are characterized by CXCR4 tropism and rapid disease progression. This study aimed to identify the origin of CRF14_BG and reconstruct its epidemiological history based on new isolates from Portugal. ; Methodology/Principal Findings: C2V3C3 env gene sequences were obtained from 62 samples collected in 1993–1998 from Portuguese HIV-1 patients. Full-length...
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