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Coronary microvascular dysfunction due to Chagas disease: where are we now ?

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Autor(es):
Tanaka, Denise Mayumi ; Simoes, Marcus Vinicius ; Marin-Neto, Jose Antonio
Número total de Autores: 3
Tipo de documento: Artigo Científico
Fonte: EXPERT REVIEW OF CARDIOVASCULAR THERAPY; v. 21, n. 6, p. 9-pg., 2023-05-25.
Resumo

Introduction: Myocardial ischemia is common in patients with chronic Chagas cardiomyopathy (CCC), but only recently clinical and experimental studies highlighted the involvement of this abnormality as contributing to the progression of myocardial damage. Areas covered: Despite the absence of obstructive epicardial coronary artery disease at angiography, and limited evidence of abnormal flow regulation at the macrovascular level, remarkable functional and structural microvascular abnormalities are consistently reported by independent investigations of CCC. These derangements occur early and contribute to myocardial dysfunction. Recent research focused on reversing microvascular dysfunction as a target to positively impact the course of CCC. We conducted an extensive review of the scientific literature, aiming to summarize the role of coronary dysfunction causing myocardial ischemia in CCC, with a focus on implications for clinical management of individuals affected by this disease. Expert Opinion: Preclinical studies showed a clear correlation between perfusion defects and inflammation in viable but impaired dysfunctional myocardium. These findings provided further insight into the CCC complex pathophysiology and support the role of very few recent therapeutic interventions aiming to relieve myocardial ischemia. Further research is warranted to assess the efficacy of new interventions addressing reversal of microvascular ischemia and inflammation modulation and halting ventricular dysfunction progression in CCC. (AU)

Processo FAPESP: 17/16450-6 - Efeito do uso prolongado de pentoxifilina sobre as alterações perfusionais miocárdicas, eventos arrítmicos e a evolução da disfunção sistólica ventricular esquerda na cardiomiopatia chagásica crônica
Beneficiário:Marcus Vinicius Simões
Modalidade de apoio: Auxílio à Pesquisa - Regular
Processo FAPESP: 16/25403-9 - Investigações sobre etiopatogenia, fisiopatologia e terapêutica em humanos e em modelo experimental com a cardiomiopatia da Doença de Chagas
Beneficiário:José Antonio Marin-Neto
Modalidade de apoio: Auxílio à Pesquisa - Temático
Processo FAPESP: 19/21250-1 - Cardiomiopatia Chagásica Crônica em modelo experimental animal: estudo prospectivo das alterações anatômicas e funcionais ventriculares e do efeito de intervenções terapêuticas
Beneficiário:Denise Mayumi Tanaka
Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado