6 documents found, page 1 of 1
In Vitro Evaluation of Novel Reverse Transcriptase Inhibitors TAF (Tenofovir Al...
Bártolo, I; Borrego, P; Gomes, P; Gonçalves, F; Caixas, U; Pinto, I; Taveira, NNew antiretroviral drugs are needed to treat HIV-2 infected patients failing therapy. Herein, we evaluate the activity of novel reverse transcriptase inhibitors tenofovir alafenamide (TAF) and OBP-601(2,3-didehydro-3-deoxy-4-ethynylthymidine) against primary isolates from HIV-2 infected patients experiencing virologic failure. TAF and OBP-601 were tested against twelve primary isolates obtained from nine drug-e...
In vitro evaluation of novel reverse transcriptase inhibitors TAF (tenofovir al...
Bártolo, I; Borrego, P; Gomes, P; Gonçalves, F; Caixas, U; Pinto, IV; Taveira, NNew antiretroviral drugs are needed to treat HIV-2 infected patients failing therapy. Herein, we evaluate the activity of novel reverse transcriptase inhibitors tenofovir alafenamide (TAF) and OBP-601(2,3-didehydro-3-deoxy-4-ethynylthymidine) against primary isolates from HIV-2 infected patients experiencing virologic failure. TAF and OBP-601 were tested against twelve primary isolates obtained from nine drug-e...
In Vitro Evaluation of Novel Reverse Transcriptase Inhibitors TAF (Tenofovir Al...
Bártolo, I; Borrego, P; Gomes, P; Gonçalves, F; Caixas, U; Pinto, IV; Taveira, NNew antiretroviral drugs are needed to treat HIV-2 infected patients failing therapy. Herein, we evaluate the activity of novel reverse transcriptase inhibitors tenofovir alafenamide (TAF) and OBP-601(2,3-didehydro-3-deoxy-4-ethynylthymidine) against primary isolates from HIV-2 infected patients experiencing virologic failure. TAF and OBP-601 were tested against twelve primary isolates obtained from nine drug-e...
Accidental Father-to-Son HIV-1 Transmission During the Seroconversion Period
Ezeonwumelu, I; Bártolo, I; Martin, F; Abecasis, A; Campos, T; Romero-Severson, EO; Leitner, T; Taveira, NA 4-year-old child born to an HIV-1 seronegative mother was diagnosed with HIV-1, the main risk factor being transmission from the child's father who was seroconverting at the time of the child's birth. In the context of a forensic investigation, we aimed to identify the source of infection of the child and date of the transmission event. Samples were collected from the father and child at two time points about...
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. ...