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Atividade do inflamasoma em pacientes com sepse grave e choque séptico

Detalhes bibliográficos
Ano de defesa: 2014
Autor(a) principal: Eidt, Michelle Virgínia lattes
Orientador(a): Oliveira, Jarbas Rodrigues de lattes
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Pontifícia Universidade Católica do Rio Grande do Sul
Programa de Pós-Graduação: Programa de Pós-Graduação em Medicina e Ciências da Saúde
Departamento: Faculdade de Medicina
País: BR
Palavras-chave em Português:
Área do conhecimento CNPq:
Link de acesso: http://tede2.pucrs.br/tede2/handle/tede/1798
Resumo: Sepsis remains the leading cause of death in the ICU and can express rates of up to 80% mortality. Despite the importance and demand for resources, the early recognition is still a challenge, allowing the occurrence of multiple organ dysfunction syndromes (MODS), shock and fatal outcomes. Recent research has shown theories about the pathophysiological mechanism of sepsis in the search for new therapies. The principal responsable for sepsis severity is inflammatory response, represented by the secretion of inflammatory cytokines. An important step in the inflammatory process is the activity of inflammasome, which functions through the activation of Caspase-1, allowing the release of active forms of interleukins IL-1β and IL-18, signaling the beginning of the response of the innate immune system. Therefore the inflammasome has been widely studied. Our study aims to assess whether the different severity of sepsis inflamossomo activity (measured by levels of IL-1 β and IL-18 in plasma) have different expression between groups, and their relationship with mortality. The results showed that the activity of inflamasoma with increased serum levels of IL-18 may be responsible for high mortality in sepsis, independent of the level of IL-1β, although the activation process and route of expresssão be simultaneous and same. Therefore, our findings may help to understand the inflammatory events that lead to sepsis, which may influence the future therapeutic and research in reducing mortality