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Introduction to Language of Pathophysiology l

Introduction to Language of Pathophysiology l

Pathophysiology investigates how biological mechanisms—typically starting at the cellular level—disrupt normal bodily functions. It bridges anatomy and physiology to explain the progression of disease. With this foundation, it is important to understand the following key terms used to describe disease processes: Diagnosis:The process of identifying a disease using clinical evaluation, including signs (objective evidence like rashes), symptoms (subjective experiences like pain), laboratory test...

Gastroesophageal Reflux Disease I: Meaning and Pathophysiology

Gastroesophageal Reflux Disease I: Meaning and Pathophysiology

Gastroesophageal Reflux Disease (GERD) involves the recurrent backflow of the stomach or duodenal contents into the esophagus, leading to troublesome symptoms and potential esophageal mucosal damage. Although GERD is often referred to as a disease, it is more accurately described as a syndrome, as it encompasses a range of symptoms and complications rather than a singular pathological entity, impacting a large number of individuals as the most prevalent upper gastrointestinal problem. Roughly...

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...

Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders

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...

Gastritis-II: Pathophysiology

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...

Introduction to Language of Pathophysiology ll

Introduction to Language of Pathophysiology ll

This lesson explores key terms that describe how diseases progress, their outcomes, and their distribution in populations.Diagnostic tests identify diseases and monitor treatment. These include blood and urine tests, biopsies, imaging (X-ray, MRI), and detection of infectious agents.Remission is a reduction or disappearance of symptoms.Exacerbation refers to the worsening of symptoms, such as increased wheezing during an asthma attack.A precipitating factor triggers an acute episode, while a...

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Related Experiment Video

Updated: Jun 27, 2026

An In Vitro Model for the Study of Cellular Pathophysiology in Globoid Cell Leukodystrophy

An In Vitro Model for the Study of Cellular Pathophysiology in Globoid Cell Leukodystrophy

Published on: October 21, 2014

[GIST: definition, physiopathology].

¹Hôpital Ambroise Paré, APHP, Boulogne et Faculté de Médecine PIFO, UVSQ, Guyancourt. jean-francois.emile@apr.aphp.fr

Journal De Chirurgie

|December 17, 2008

Summary

This summary is machine-generated.

Gastrointestinal stromal tumors (GIST) are common digestive tract cancers. Targeted therapies like Imatinib offer significant progress against these tumors, which resist traditional chemotherapy.

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A Mouse Model for Pathogen-induced Chronic Inflammation at Local and Systemic Sites

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An In Vitro Model for the Study of Cellular Pathophysiology in Globoid Cell Leukodystrophy

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Published on: October 21, 2014

A Mouse Model for Pathogen-induced Chronic Inflammation at Local and Systemic Sites

A Mouse Model for Pathogen-induced Chronic Inflammation at Local and Systemic Sites

Published on: August 8, 2014

Area of Science:

Gastrointestinal stromal tumors (GIST) are the most common mesenchymal neoplasms of the digestive tract.

Context:

GIST can originate anywhere in the gastrointestinal tract, from the esophagus to the anus, and rarely in the peritoneal cavity or mesentery.
Many GIST cases are asymptomatic, leading to incidental discovery during endoscopy or surgery, with metastases present in 15-50% of diagnoses.

Purpose:

This abstract provides an overview of Gastrointestinal Stromal Tumors (GIST), covering their origin, diagnosis, prognostic factors, and treatment advancements.

Summary:

Histologically, GIST are characterized by spindle or epithelioid cell proliferation.
Diagnosis confirmation relies on immunohistochemistry (KIT positivity in 95%) or molecular biology (KIT/PDGFRA mutations in 85%).
Key prognostic factors include primary tumor location, mitotic activity, and size, with metastases occurring in 30-50% of patients.

Impact:

GIST exhibit resistance to conventional chemotherapy.
Targeted therapies, such as Imatinib, represent a major advancement in GIST oncology, demonstrating significant progress in treatment outcomes.