Trypanosoma cruzi in the chicken model. Autoimmune Chagas-like Heart Disease

submitted by: Antonio Teixeira
he administration of anti-trypanosome nitroderivatives curtails Trypanosoma cruzi infection in Chagas disease patients, but does not prevent destructive lesions in the heart. This observation suggests that an effective treatment for the disease requires understanding its pathogenesis. To understand the origin of clinical manifestations of the heart disease we used a chicken model system in which infection can be initiated in the egg, but parasite persistence is precluded. T. cruzi...
Authors: Teixeira Antonio rl, Gomes Clever, Nitz Nadjar, Alessandro sousa, Alves Roseneide, Sousa Alessandro, Cambraia Maria carolina, Cordeiro Ciro, Bernal Francisco m, Rosa Ana cassia, Hejnar Jiri, Leonardecz Eduardo, Hecht Mariana m

The R403Q Myosin Mutation Implicated in Familial Hypertrophic Cardiomyopathy Causes Disorder at the Actomyosin Interface

submitted by: apryl
Background Mutations in virtually all of the proteins comprising the cardiac muscle sarcomere have been implicated in causing Familial Hypertrophic Cardiomyopathy (FHC). Mutations in the β-myosin heavy chain (MHC) remain among the most common causes of FHC, with the widely studied R403Q mutation resulting in an especially severe clinical prognosis. In vitro functional studies of cardiac myosin containing the R403Q mutation have revealed significant changes in enzymatic and...
Authors: Dorit Hanein, Larnele Hazelwood, Susan Lowey, HongJun Lui, Kathleen M. Trybus, Niels Volkmann