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Chagas Disease: An Unknown and Neglected Disease

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Chagas Disease

Abstract

Chagas disease, formerly confined to the Latin-American sub-continent, is now diagnosed in vast numbers of T. cruzi chronically infected individuals living in the United States, Canada, virtually all European countries, Asia, and Oceania, because of recent population migratory and globalization patterns.

Much has been learned about the etiologic agent of Chagas disease during the last decades, including its high level of genetic, biochemical, and anatomical diversity. The fascinating history of the disease knowledge has now entered a phase of growing consensus about several features and aspects. The pathogenesis of chronic Chagas cardiomyopathy involves at least four mechanisms, among which the most important is related to parasite persistence in the cardiac tissue that triggers low-level but virtually incessant inflammation and fibrosis as well as adverse immune reactions. In contrast, the pathogenesis of gastrointestinal involvement caused by T. cruzi infection is directly related to damage of the autonomic control of organs such as the esophagus and colon. The natural history of Chagas disease comprises two phases with clinical manifestations encompassing sudden death, arrhythmia, heart failure, thromboembolic events, and the appearance of megaesophagus and megacolon. Although the role of etiologic treatment in the chronic phase has not been clearly defined, the lack of trypanocidal agents more effective than the half-a-century-old benznidazole and nifurtimox testifies to the neglected stigma of Chagas disease.

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de Oliveira, R.B., Ballart, C., Abràs, A., Gállego, M., Marin-Neto, J.A. (2020). Chagas Disease: An Unknown and Neglected Disease. In: Pinazo Delgado, MJ., Gascón, J. (eds) Chagas Disease. Springer, Cham. https://doi.org/10.1007/978-3-030-44054-1_1

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