Video Experimental Relacionado

Updated: Jul 10, 2026

Visualization of Streptococcus pneumoniae within Cardiac Microlesions and Subsequent Cardiac Remodeling

Visualization of Streptococcus pneumoniae within Cardiac Microlesions and Subsequent Cardiac Remodeling

Published on: April 7, 2015

Estudio prospectivo de la carga de patógenos y el riesgo de infarto de miocardio o muerte

J Zhu¹, F J Nieto, B D Horne

¹Cardiovascular Research Institute, MedStar Research Institute, Washington Hospital Center, Washington, DC 20010, USA.

|January 4, 2001

Resumen

Las infecciones aumentan el riesgo de infarto de miocardio (IM) y muerte en pacientes con enfermedad arterial coronaria (CAD). Una mayor carga de patógenos, de infecciones como CMV y HAV, se correlaciona con un mayor riesgo.

Área de la Ciencia:

Enfermedades infecciosas Enfermedades infecciosas.
Medicina Cardiovascular La medicina cardiovascular es una especialidad de la salud.
Inmunología Inmunología.

Sus antecedentes:

Estudios transversales previos relacionaron la carga de patógenos con el riesgo de enfermedad arterial coronaria (CAD).
Este estudio prospectivo investiga el impacto de la carga de patógenos en el infarto de miocardio (IM) o la muerte en pacientes con EAC.

Objetivo del estudio:

Evaluar el efecto de la carga de patógenos en el riesgo de infarto de miocardio o muerte en pacientes con CAD establecida.
Para determinar si los patógenos específicos o la carga patógena general predicen eventos cardiovasculares adversos.

Principales métodos:

Estudio prospectivo de 890 pacientes con EAC.
Anticorpos IgG evaluados contra varios patógenos (CMV, HAV, HSV1, HSV2, C. pneumoniae, H. pylori) y los niveles de proteína C reactiva (CRP).
Se siguió a los pacientes durante una media de 3 años para registrar eventos de infarto de miocardio o muerte.

Principales resultados:

Se observó una mayor prevalencia de anticuerpos contra el CMV, el HAV, el HSV1 y el HSV2 en pacientes que más tarde experimentaron infarto de miocardio o muerte.
El aumento de la carga de patógenos se asoció significativamente con un aumento de la dosis-respuesta en el MI o el riesgo de muerte.
Los riesgos relativos ajustados de infarto de miocardio o muerte fueron elevados para las infecciones por CMV, HAV y HSV2, independientemente de los niveles de PCR.

Conclusiones:

Las infecciones juegan un papel importante en el infarto de miocardio incidente o la muerte entre los pacientes con CAD.
El riesgo que plantea la infección está relacionado de forma independiente con la carga patógena general.

Más Videos Relacionados

Sexual Transmission of American Trypanosomes from Males and Females to Naive Mates

Sexual Transmission of American Trypanosomes from Males and Females to Naive Mates

Published on: January 27, 2019

Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model

Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model

Published on: August 8, 2022

Videos de Conceptos Relacionados

Endocarditis I: Introduction

Endocarditis I: Introduction

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...

Myocarditis I: Introduction

Myocarditis I: Introduction

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...

Myocarditis II: Clinical Features and Diagnostic Tests

Myocarditis II: Clinical Features and Diagnostic Tests

Myocarditis is an inflammation of the heart muscle. The symptoms vary widely, encompassing asymptomatic presentations to severe, acute manifestations.Clinical PresentationAsymptomatic cases: In some instances, myocarditis may be asymptomatic, with the infection resolving without intervention. These cases often go undetected unless discovered incidentally through diagnostic imaging or tests conducted for other reasons.General Early Symptoms: Early symptoms of myocarditis are non-specific and can...

Rheumatic Heart Disease I: Introduction

Rheumatic Heart Disease I: Introduction

Rheumatic heart disease or RHD is a chronic condition that results from rheumatic fever, causing permanent damage to the heart valves.Etiology and Risk FactorsIt primarily arises from rheumatic fever, an inflammatory disease that can develop after untreated or inadequately treated group A streptococcal (GAS) pharyngitis. Streptococcus spreads through direct contact with oral or respiratory secretions. While the bacteria are the causative agents, factors like malnutrition, overcrowding, poor...

Diphtheria

Diphtheria

Diphtheria is an acute, toxin-mediated infectious disease that primarily affects the upper respiratory tract. It is caused by Corynebacterium diphtheriae, a Gram-positive, pleomorphic rod that lacks spore-forming capability and exhibits a characteristic club-shaped morphology under microscopic examination. While C. diphtheriae can asymptomatically colonize mucosal surfaces, clinical disease manifests only when the bacterial strain is lysogenized by a specific β-corynephage. This phage...