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New records of exotic spiders and insects to the Azores, and new data on recent...

The introduction of exotic species in islands is recognized as a major threat to native biota and ecosystems. In this contribution we list thirteen widespread exotic invertebrate species (two Araneae, one Orthoptera, four Hemiptera, four Coleoptera and two Diptera) that were recorded from the Azorean Islands in the last few years for the first time. In addition, we list another ten invertebrate species (two Ara...

An ancestral HIV-2/simian immunodeficiency virus peptide with potent HIV-1 and ...

"Objectives: To produce new fusion inhibitor peptides for HIV-1 and HIV-2 based on ancestral envelope sequences. Methods: HIV-2/simian immunodeficiency virus (SIV) ancestral transmembrane protein sequences were reconstructed and ancestral peptides were derived from the helical region 2 (HR2). The activity of one ancestral peptide (named P3) was examined against a panel of HIV-1 and HIV-2 primary isolates in TZM...

Evolution of the human immunodeficiency virus type 2 envelope in the first year...

"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 ...

Resistance to antibody neutralization in HIV-2 infection occurs in late stage d...

Objectives: To characterize the nature and dynamics of the neutralizing antibody (NAb) response and escape in chronically HIV-2 infected patients. ; Methods: Twenty-eight chronically infected adults were studied over a period of 1-4 years. The neutralizing activity of plasma IgG antibodies against autologous and heterologous primary isolates was analyzed using a standard assay in TZM-bl cells. Coreceptor usage...

Baseline susceptibility of primary HIV-2 to entry inhibitors

Background: 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...

Contribuição para o estudo da destilação em condições de emulsificação

Dissertação apresentada para obtenção do grau de Doutor, na Faculdade de Engenharia da Universidade do Porto

Resposta humoral na infecção por VIH-2 : impacto no diagnóstico, prevenção e ev...

Tese de doutoramento, Ciências Biomédicas (Ciências Biopatalógicas), Universidade de Lisboa, Faculdade de Medicina, 2011 ; Os indivíduos infectados pelo VIH-2 progridem mais lentamente do que os infectados pelo VIH-1, e estima-se que mais de 95% dos indivíduos infectados por VIH-2 estejam incluídos na definição clínica de long-term nonprogressors. Esta diferença faz do VIH-2 um potencial modelo de estudo de um...

Evolutionary and Structural Features of the C2, V3 and C3 Envelope Regions Unde...

Background: 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...

List of arthropods (Arthropoda)

Produção de conhecimento e busca de aplicações: a experiência da universidade c...

Aborda a natureza e as implicações da interação universidade-indústria. A ideia de que a inovação nem sempre é resultado de processo originado na pesquisa básica trouxe novas possibilidades conceituais sobre tal interação. Segundo Stokes, discriminado o espaço conhecimento-utilidade em quadrantes, aquele que concentra alto conteúdo científico e alto grau de utilidade seria o 'quadrante de Pasteur'. As evidência...