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Autoimmune Disorders

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...

Myasthenia Gravis ll: Pathophysiology

Myasthenia Gravis ll: Pathophysiology

The disease process of myasthenia gravis begins at the neuromuscular junction, where antibodies attack key proteins needed for muscle activation. This immune reaction weakens signal transmission, leading to the characteristic muscle fatigue and weakness that define the condition.Immune-Mediated DamageIn most individuals, antibodies target acetylcholine receptors (AChRs) on the postsynaptic membrane of muscle cells. By blocking acetylcholine binding, these antibodies prevent the nerve signal...

Skin Diseases and Disorders

Skin Diseases and Disorders

Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...

Myasthenia Gravis: Overview and Treatment

Myasthenia Gravis: Overview and Treatment

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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Hypersensitivity Reactions: Immune-Complex Reactions

Hypersensitivity Reactions: Immune-Complex Reactions

Type III hypersensitivity reactions occur when antigen–antibody complexes form and activate the complement system. Normally, these complexes help the clearance of antigens by phagocytes and red blood cells. However, when large numbers of immune complexes are present, they can deposit in tissues—particularly in the walls of blood vessels—leading to inflammation and tissue injury. These deposits trigger complement activation and neutrophil recruitment, resulting in serum sickness, a systemic...

Gastritis-II: Pathophysiology

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Gastritis is marked by disruption of the mucosal barrier that usually protects the stomach tissue from digestive juices and manifests in acute and chronic forms.
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Related Experiment Video

Updated: Jul 19, 2026

Anti-Nuclear Antibody Screening Using HEp-2 Cells

Anti-Nuclear Antibody Screening Using HEp-2 Cells

Published on: June 23, 2014

Is scleroderma an autoantibody mediated disease?

Current Opinion in Rheumatology

|October 21, 2006

Summary

Recent studies suggest autoantibodies may cause vascular damage and fibrosis in systemic sclerosis. These findings offer new insights into the pathogenesis of this complex fibrotic condition.

Area of Science:

Fibrotic diseases research
Autoimmune pathogenesis
Vascular damage mechanisms

Background:

Systemic sclerosis (SSc) and other fibrotic conditions are complex diseases.
Recent research suggests autoantibodies play a causative role in SSc pathogenesis.
Specific autoantibodies implicated include anti-endothelial cell, antifibrillin-1, anti-matrix metalloproteinases (MMPs) 1 and 3, and anti-platelet-derived growth factor beta (PDGF-β).

Discussion:

Investigating the role of autoantibodies in fibrotic diseases.
Understanding the unique mechanisms of different autoantibodies in causing vascular damage and fibrosis.
Exploring the link between autoimmune responses and tissue fibrosis.

Key Insights:

Autoantibodies are increasingly recognized as potential drivers of SSc.

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Granulocyte-dependent Autoantibody-induced Skin Blistering

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Last Updated: Jul 19, 2026

Anti-Nuclear Antibody Screening Using HEp-2 Cells

Anti-Nuclear Antibody Screening Using HEp-2 Cells

Published on: June 23, 2014

Granulocyte-dependent Autoantibody-induced Skin Blistering

Granulocyte-dependent Autoantibody-induced Skin Blistering

Published on: October 12, 2012

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease

Published on: June 16, 2020

Different autoantibodies target distinct pathways involved in vascular and fibrotic processes.

This paradigm shift opens new avenues for understanding SSc.

Outlook:

Further research into autoantibody-mediated mechanisms in SSc.
Development of novel diagnostic and therapeutic strategies targeting autoantibodies.
Potential for broader applications in other fibrotic conditions.