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Related Concept Videos

Autoimmune Disorders01:29

Autoimmune Disorders

Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
Concept and Mechanism of Autoimmune Diseases
The immune system...
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Immunodeficiency Diseases01:25

Immunodeficiency Diseases

Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
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Myasthenia gravis is a neuromuscular transmission disorder characterized by weakness and increased fatigability of skeletal muscles. It is an autoimmune disease affecting approximately one in 2000 people, where antibodies against the α1 subunit of nicotinic acetylcholine receptors are produced.
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Allergic Drug Reactions01:27

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Allergic reactions related to drugs are hypersensitivity responses driven by the immune system and bear no connection to the drug's therapeutic action. While drugs in isolation do not trigger an immune response, they can interact with endogenous proteins to form antigens. These antigens stimulate lymphocytes to produce antibodies. IgE-type antibodies attach themselves to mast cells. Upon subsequent exposure to the same stimulus, the antigen-antibody interaction is initiated, unleashing numerous...
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Anti-Nuclear Antibody Screening Using HEp-2 Cells
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Seronegative autoimmune diseases.

Cristiano Alessandri1, Fabrizio Conti, Paola Conigliaro

  • 1Dipartimento di Clinica e Terapia Medica, Sapienza Università di Roma, Rome, Italy.

Annals of the New York Academy of Sciences
|September 18, 2009
PubMed
Summary
This summary is machine-generated.

Seronegative autoimmune diseases present diagnostic challenges due to the absence of specific autoantibodies. This review explores autoantibody negativity in conditions like lupus, antiphospholipid syndrome, and rheumatoid arthritis.

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Area of Science:

  • Immunology
  • Rheumatology
  • Autoimmune Diseases

Background:

  • Autoimmunity is closely linked to autoantibodies, but some patients lack disease-specific autoantibodies.
  • These seronegative autoimmune diseases pose diagnostic difficulties.
  • Autoantibodies can also be present in healthy individuals, indicating latent, preclinical, or postclinical autoimmunity.

Purpose of the Study:

  • To analyze the significance of autoantibody negativity in seronegative autoimmune diseases.
  • To focus on the specific characteristics of autoantibody negativity in systemic lupus erythematosus, antiphospholipid syndrome, and rheumatoid arthritis.

Main Methods:

  • Literature review and analysis of existing data on seronegative autoimmune diseases.
  • Focus on specific autoimmune conditions: systemic lupus erythematosus, antiphospholipid syndrome, and rheumatoid arthritis.

Main Results:

  • Seronegative autoimmune diseases are characterized by the absence of detectable autoantibodies.
  • Understanding autoantibody status is crucial for accurate diagnosis and management.
  • The presence of autoantibodies in healthy individuals requires careful interpretation.

Conclusions:

  • Autoantibody negativity is a key feature of seronegative autoimmune diseases, complicating diagnosis.
  • Further research is needed to understand the mechanisms and implications of autoantibody negativity in specific diseases.
  • Differentiating between seronegative disease and autoimmunity in healthy subjects is clinically important.