5 documents found, page 1 of 1
Evolution of the Human Immunodeficiency Virus Type 2 Envelope in the First Year...
Rocha, C; Calado, R; Borrego, P; Marcelino, JM; Bártolo, I; Rosado, L; Cavaco-Silva, P; Gomes, P; Família, C; Quintas, A; Skar, H; Leitner, TBackground: 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 r...
Baseline Susceptibility of Primary HIV-2 to Entry Inhibitors
Borrego, P; Calado, R; Marcelino, JM; Bártolo, I; Rocha, C; Cavaco-Silva, P; Doroana, M; Antunes, F; Maltez, F; Caixas, U; Barroso, H; Taveira, NBACKGROUND: 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 cell-based assay. ...
The Role of the Humoral Immune Response in the Molecular Evolution of the Envel...
Borrego, P; Marcelino, JM; Rocha, C; Doroana, M; Antunes, F; Maltez, F; Gomes, P; Novo, C; Barroso, H; Taveira, NBACKGROUND: This study was designed to investigate, for the first time, the short-term molecular evolution of the HIV-2 C2, V3 and C3 envelope regions and its association with the immune response. Clonal sequences of the env C2V3C3 region were obtained from a cohort of eighteen HIV-2 chronically infected patients followed prospectively during 2-4 years. Genetic diversity, divergence, positive selection and glyc...
Use of a new dual-antigen enzyme-linked Immunosorbent assay to detect and chara...
Marcelino, JM; Barroso, H; Goncalves, F; Silva, SM; Novo, C; Gomes, P; Camacho, R; Taveira, NA dual-antigen enzyme-linked immunosorbent assay specific for human immunodeficiency virus type 2 (HIV-2) envelope proteins, ELISA-HIV2, was developed with two new recombinant polypeptides, rpC2-C3 and rgp36, derived from the HIV-2 envelope. The diagnosti
Production and characterization of a mouse monoclonal antibody against the Gag ...
Marcelino, JM; Novo, C; Pereira, JM; Picotez, F; Clemente, A; Taveira, NOne anticapsid (p26) mouse monoclonal antibody was developed after immunization with recombinant p26 Gag protein and was tested for reactivity with different HIV-1 and HIV-2 isolates by ELISA and Western blot analysis. This antibody, named R26.1, reacted