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Related Concept Videos

Encephalitis ll: Pathophysiology01:26

Encephalitis ll: Pathophysiology

Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...
Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders01:27

Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders

Schizophrenia is a neurodevelopmental disorder whose origins are rooted in complex genetic components. Despite our burgeoning understanding, the pathophysiology of this disorder remains incompletely deciphered.
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within the...
Pulmonary Hypertension: Classification and Pathogenesis01:30

Pulmonary Hypertension: Classification and Pathogenesis

Pulmonary hypertension (PH) is a severe health condition in which the mean pulmonary arterial pressure increases to 25 mmHg or more, even when the body is at rest. This high pressure in the blood vessels that transport blood from the heart to the lungs can cause various symptoms, including shortness of breath, can lead to right heart failure, and significantly affect the overall quality of life.
There are various classifications for PH, each relating to different underlying causes and also...
Gastritis-II: Pathophysiology01:17

Gastritis-II: Pathophysiology

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.
In acute gastritis, the gastric mucosa becomes swollen and red and undergoes superficial erosion. Superficial ulceration may lead to bleeding.
In chronic gastritis, persistent or repeated insults lead to chronic inflammatory changes and, eventually, thinning or atrophy of the gastric tissue.
Gastritis can stem from various causes, each...
Gastritis II: Pathophysiology01:26

Gastritis II: Pathophysiology

The pathophysiology of gastritis begins with the colonization of the stomach lining by Helicobacter pylori (H. pylori). This bacterium spreads mainly via the oral-oral route through saliva or shared utensils, and can also be transmitted in overcrowded or unhygienic environments through contaminated water, despite its brief survival outside the body.ColonizationOnce ingested, H. pylori enters the stomach and begins colonization by navigating through the mucus layer lining the stomach wall. It...
Acute Pancreatitis II: Pathophysiology01:21

Acute Pancreatitis II: Pathophysiology

The pathophysiology of acute pancreatitis centers on injury to pancreatic acinar cells, which initiates a cascade of harmful intracellular events.This injury leads to premature activation of trypsinogen to trypsin in the pancreas. Trypsin then activates other digestive enzymes, such as chymotrypsin, elastase, and phospholipase A2, which begin breaking down pancreatic tissue. The resulting autodigestion causes local inflammation, tissue swelling, hemorrhage, and fat necrosis.Injured acinar cells...

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Related Experiment Video

Updated: May 30, 2026

A Model of Epileptogenesis in Rhinal Cortex-Hippocampus Organotypic Slice Cultures
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[Etiopathogenesis. New concepts].

Carmen Navarro1, Martha L Bustos

  • 1Subdirección de Investigación Clínica. Instituto Nacional de Enfermedades Respiratorias. Tlalpan. México DF. México.

Reumatologia Clinica
|July 29, 2011
PubMed
Summary
This summary is machine-generated.

Systemic sclerosis is an autoimmune disease causing immune and endothelial damage, leading to fibrosis. Its exact cause remains unknown, but genetics and environment likely trigger an abnormal immune response.

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Area of Science:

  • Immunology
  • Autoimmune Diseases
  • Fibrosis Research

Context:

  • Systemic sclerosis is a complex, progressive autoimmune disorder.
  • Its etiology remains largely unknown.
  • Characterized by immune dysregulation and endothelial damage, culminating in fibrosis.

Purpose:

  • To elucidate the complex mechanisms underlying systemic sclerosis.
  • To understand the interplay of genetic and environmental factors in disease pathogenesis.
  • To identify key immunological and cellular pathways driving fibrosis.

Summary:

  • Systemic sclerosis involves abnormal immune responses, including Th2 expansion and B cell dysregulation.
  • Endothelial activation and impaired vascular function are early hallmarks.
  • Persistent ischemia and immune factors promote myofibroblast proliferation and excessive extracellular matrix deposition, leading to fibrosis.

Impact:

  • Understanding these mechanisms can inform targeted therapies for systemic sclerosis.
  • Identifying specific autoantibody profiles may aid in classifying disease subtypes.
  • Research contributes to the broader understanding of fibrotic diseases and autoimmune conditions.