RESUMEN
Myocarditis is an inflammatory disease of the myocardium associated with cardiac dysfunction. Etiologies of myocarditis are numerous - viral causes being the most frequent - as well as their clinical presentations which varies from isolated increase in cardiac enzymes during a viral pericarditis, fulminant myocarditis associated with cardiogenic shock to endomyocardial biopsy proven inflammation discovered during the etiologic diagnosis of a dilated cardiomyopathy. This article will discuss the importance of recognition of specific clinical scenarios of myocarditis and their echocardiographic presentations that are very useful for the etiologic diagnosis and to decide the medical strategy. Recent advances in the field of myocarditis concern improvement in understanding the pathophysiology, in the diagnostic approach with the use of noninvasive imaging (MRI) and molecular biology. However, specific treatment is still limited. Clinical trials with antiviral medications are not conclusive, and the medical strategies remain mainly based on the symptomatic treatment of heart failure.
Asunto(s)
Miocarditis , Biopsia/métodos , Biopsia/estadística & datos numéricos , Genoma Viral/fisiología , Corazón/diagnóstico por imagen , Corazón/virología , Humanos , Imagen por Resonancia Magnética , Técnicas de Diagnóstico Molecular , Miocarditis/clasificación , Miocarditis/etiología , Miocarditis/patología , Miocarditis/terapia , Miocardio/patología , Radiografía , Virología/métodos , Virosis/complicaciones , Virosis/diagnósticoRESUMEN
To investigate the potential role of CMV in cutaneous T-cell lymphoma (CTCL), we studied cytomegalovirus (CMV) seroprevalence in parapsoriasis (PP), mycosis fungoides (MF) and Sézary syndrome (SS) compared with healthy control patients. In cases where CMV seropositivity was observed, CMV PCR analyses were performed on skin biopsies. CMV seroprevalence was 37.1% in the control group, 50.68% in the PP + MF + SS group (P = 0.08), 56.2% in the MF + SS group (P = 0.07), 40% in the PP group (P = 0.9), 66.67% in the MF group (P = 0.009), 42.86% in the SS group (P = 0.9). CMV PCR in initial skin biopsies were all negative. However, PCR CMV was positive in two SS skin biopsies realized at an advanced stage. Our results show that latent CMV infection may play a role in the susceptibility of MF in predisposed subjects by inducing T-cell proliferation and resistance to apoptosis. Concerning SS, an immunosuppressive state may be responsible for CMV reactivation that in turn may interfere with evolution of the disease.