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Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies01:22

Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies

The key clinical manifestations of Rheumatic heart disease (RHD) include several distinct cardiac symptoms.Carditis, a hallmark of acute rheumatic fever, involves inflammation of the heart's endocardium, myocardium, and pericardium. Chronic RHD often results from recurrent episodes of carditis. Its symptoms include the following:Murmurs are caused by valvular damage, especially to the mitral and aortic valves. Mitral stenosis or regurgitation is common, with characteristic heart murmurs...
Overview of the Vascular System01:20

Overview of the Vascular System

The vascular system comprises an extensive network of arteries, capillaries, and veins. The vascular system can be broadly divided into the blood and lymphatic systems. Typically, blood vessels can be categorized into three histological regions: tunica intima, tunica media, and tunica adventitia. The tunica intima consists of a single layer of endothelial cells attached to the basal lamina. Underlying the basal lamina is a connective tissue layer and an elastic lamina that gives stability and...
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Endocarditis II: Clinical Features of Infective Endocarditis

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...
Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies01:20

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The key difference between Superficial Vein Thrombosis (SVT) and Deep Vein Thrombosis (DVT) lies in their location and severity.Clinical ManifestationsSVT typically presents with localized pain, tenderness, and redness along the course of a superficial vein, often accompanied by a palpable, cord-like structure under the skin. This condition is usually less dangerous than DVT but can be uncomfortable and may lead to complications such as cellulitis or, rarely, a clot extension into the deep...
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Supervised Machine Learning for Semi-Quantification of Extracellular DNA in Glomerulonephritis
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Disease patterns in vasculitis-still a mystery.

Gary S Hoffman1

  • 1Department of Rheumatic and Immmunologic Diseases, Cleveland Clinic Lerner College of Medicine, Cleveland, OH 44195, USA. hoffmag@ccf.org

Bulletin of the NYU Hospital for Joint Diseases
|October 22, 2008
PubMed
Summary

Vasculitis may originate from new antigens on blood vessel walls, triggering an immune response. This explains organ-specific patterns in autoimmune vascular diseases.

Area of Science:

  • Immunology
  • Vascular Biology
  • Autoimmunity

Background:

  • Current understanding of autoimmunity focuses on immune cells, cytokines, and antibodies.
  • The triggers for immune cell migration to injury sites in vasculitis remain largely unknown.
  • Existing research highlights significant diversity in organ vasculature from early development.

Purpose of the Study:

  • To propose a novel hypothesis for the etiology of vasculitis.
  • To explain the organ-specific targeting observed in vasculitis.
  • To investigate the role of neoantigens in initiating autoimmune vascular disease.

Main Methods:

  • Review of existing embryological and immunological data.
  • Formulation of a testable hypothesis based on vascular development and antigen presentation.

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  • Analysis of factors influencing vascular wall characteristics over time.
  • Main Results:

    • Vascular structures exhibit unique developmental and qualitative differences across organs.
    • These vascular differences are further modified by aging, comorbidities, and other factors.
    • A hypothesis is proposed linking neoantigen emergence in vessel walls to vasculitis pathogenesis.

    Conclusions:

    • Vasculitis may be initiated by the development of neoantigens within blood vessel walls.
    • The immune response to these neoantigens could be a normal reaction to perceived foreign proteins.
    • This hypothesis offers a potential explanation for organ specificity and disease patterns in vasculitis.