4 documents found, page 1 of 1
Faster cryptococcus melanization increases virulence in experimental and human ...
Sousa, Herdson Renney de; Oliveira Júnior, Getúlio Pereira de; Frazão, Stefânia de Oliveira; Gorgonha, Kaio César de Melo; Rosa, Camila PereiraCryptococcus spp. are human pathogens that cause 181,000 deaths per year. In this work, we systematically investigated the virulence attributes of Cryptococcus spp. clinical isolates and correlated them with patient data to better understand cryptococcosis. We collected 66 C. neoformans and 19 C. gattii clinical isolates and analyzed multiple virulence phenotypes and host–pathogen interaction outcomes. C. neofo...
Cryptococcal virulence in humans : learning from translational studies with cli...
Sousa, Herdson Renney de; Frazão, Stefânia de Oliveira; Oliveira Júnior, Getúlio Pereira de; Albuquerque, Patrícia; Nicola, André MoraesCryptococcosis, an invasive mycosis caused by Cryptococcus spp, kills between 20% and 70% of the patients who develop it. There are no vaccines for prevention, and treatment is based on a limited number of antifungals. Studying fungal virulence and how the host responds to infection could lead to new therapies, improving outcomes for patients. The biggest challenge, however, is that experimental cryptococcosis ...
Laccase affects the rate of Cryptococcus neoformans nonlytic exocytosis from ma...
Frazão, Stefânia de Oliveira; Sousa, Herdson Renney de; Silva, Lenise Gonçalves da; Folha, Jéssica dos Santos; Gorgonha, Kaio César de MeloNonlytic exocytosis is a process in which previously ingested microbes are expelled from host phagocytes with the concomitant survival of both cell types. This process has been observed in the interaction of Cryptococcus spp. and other fungal cells with phagocytes as distant as mammalian, bird, and fish macrophages and ameboid predators. Despite a great amount of research dedicated to unraveling this process, t...
Avaliação de elementos formadores de Z-DNA como potenciais reguladores da expre...
Sousa, Herdson Renney deDissertação (mestrado)—Universidade de Brasília, Programa de Pós-graduação em Patologia Molecular, 2013.; Introdução: o grupo de Imunologia Molecular/UnB já produziu anticorpos recombinantes e humanizados de interesse comercial como o anti-CD18, anti-CD3, ou acadêmico como o anti-Z22,assim como fatores plasmáticos humanos. Os vetores de expressão utilizados contêm o promotor de CMV-IA. O objetivo desse trabalho...