Involvement of Neutrophils in Chagas Disease Pathology

Autores: Micássio Fernandes de Andrade, Valéria Duarte de Almeida, Lara Michelly Soares de Souza, Dayane Carla Costa Paiva, Cléber de Mesquita Andrade, Thales Allyrio Araújo de Medeiros Fernandes

Abstract: Chagas Disease (CD) is a public health problem in Latin America. The acute phase presents
nonspecific symptoms and most patients recover from acute parasitemia and undergo a prolonged asymptomatic phase. Several years later, about 30% of infected individuals develop chronic cardiopathy with progressive cardiomegaly, arrhythmia, thromboembolic events, and heart failure. These symptoms suggest a persistent association with the presence of inflammatory infiltrate and tissue, and cellular destruction in the heart muscle. Nevertheless, few research studies have attempted to understand the role of inflammatory cells, such as neutrophils, in establishing the pathology and progression of CD. Only recently have some
studies been performed with this intention. Despite this effort, the role of neutrophils in CD is still considered controversial. This review discusses the morphological and functional characteristics of neutrophils that describes their participation in the establishment and progression of Trypanosoma cruzi infection, through the development of its effector functions, such as release of lithic components, production of oxidative agents, and release of inflammatory mediators capable of modulating the host immune response. This article is protected by copyright. All rights reserved.

KEYWORDS: Trypanosoma cruzi ; Chagas disease; Neutrophil; effector function; immune response;
immunomodulation; inflammatory mediators

Texto Completo

DOI: 10.1111/pim.12593

Área: Ciências da Saúde