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Endocarditis II: Clinical features and Diagnostic Tests01:25

Endocarditis II: Clinical features and Diagnostic Tests

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Endocarditis can present various clinical features depending on the causative organism and the patient's underlying health conditions. Initially, the clinical features of infective endocarditis develop gradually, presenting with nonspecific symptoms that can be easily mistaken for other illnesses.General SymptomsEarly symptoms of infective endocarditis are fever, chills, weakness, malaise, fatigue, and weight loss. These symptoms reflect the systemic nature of the infection and the body's...
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Myocarditis I: Introduction01:21

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Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
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Endocarditis I: Introduction01:25

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Introduction:Endocarditis is the infection of the endocardium, the inner lining of the heart and its valves. When the heart muscle is involved, the condition is termed myocarditis, while an infection of the outer lining is called pericarditis. Infective endocarditis (IE) primarily affects the endocardium, where pathogens adhere to the valves or lining, forming vegetation that can lead to severe complications. Infective endocarditis occurs when microorganisms, usually bacteria from other body...
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Pericarditis I: Introduction01:22

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Pericarditis is defined as the inflammation of the pericardium, the thin, sac-like membrane surrounding the heart. This condition can cause significant chest pain and other symptoms, often necessitating medical intervention. The pericardium has two layers: the inner visceral layer and the outer parietal layer, separated by a small amount of fluid that reduces friction during heartbeats.Types of PericarditisPericarditis can be classified into several types based on the duration and nature of the...
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Video Experimental Relacionado

Updated: Jun 6, 2025

Monitoring Changes in Human Umbilical Vein Endothelial Cells upon Viral Infection Using Impedance-Based Real-Time Cell Analysis
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Inflamación endotelial en el COVID-19

Peter Libby1

  • 1Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.

Science (New York, N.Y.)
|November 28, 2024
PubMed
Resumen

El COVID-19 interrumpe la función endotelial, lo que lleva a complicaciones en múltiples órganos. Esta disfunción es un factor clave en la enfermedad grave asociada con la enfermedad.

Área de la Ciencia:

  • Ciencias cardiovasculares
  • Enfermedades infecciosas
  • Fisiopatología

Sus antecedentes:

  • La disfunción endotelial es un factor crítico en las enfermedades cardiovasculares y sistémicas.
  • La pandemia del coronavirus 2 del síndrome respiratorio agudo severo (SARS-CoV-2) ha puesto de relieve su impacto en varios órganos.

Objetivo del estudio:

  • Para aclarar el papel de la disfunción endotelial en la patogénesis de COVID-19.
  • Comprender cómo la infección por SARS-CoV-2 afecta la salud vascular y contribuye a las complicaciones multiorgánicas.

Principales métodos:

  • Revisión de la literatura actual sobre el COVID-19 y la función endotelial.
  • Análisis de estudios clínicos y experimentales que investigan los marcadores vasculares en pacientes con COVID-19.
  • Examen fisiopatológico de las interacciones virales con las células endoteliales.

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Principales resultados:

  • El SARS-CoV-2 infecta directamente las células endoteliales, provocando inflamación y muerte celular.
  • El COVID-19 está asociado con una activación endotelial generalizada, una vasodilatación deteriorada y un estado protrombótico.
  • La evidencia sugiere que la lesión endotelial contribuye al síndrome de dificultad respiratoria aguda, la miocarditis, la lesión renal y las complicaciones neurológicas.

Conclusiones:

  • La disrupción de la función endotelial es un mecanismo central que impulsa las manifestaciones de múltiples órganos del COVID-19.
  • Dirigirse a la disfunción endotelial puede ofrecer estrategias terapéuticas para mitigar la gravedad y las secuelas a largo plazo del COVID-19.