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Related Concept Videos

Liver Histology01:27

Liver Histology

The microscopic anatomy of the liver is a complex and intricate system that comprises numerous structural units known as liver lobules, each of which is comparable in size to a sesame seed. These hexagonal structures consist of plates of liver cells or hepatocytes, which are characterized by their versatility and abundance of cellular apparatus like rough and smooth ER, Golgi apparatus, peroxisomes, and mitochondria.
Hepatocytes perform a variety of essential functions. They secrete...
Cirrhosis I: Introduction01:23

Cirrhosis I: Introduction

Cirrhosis is a chronic, irreversible liver disease characterized by the widespread replacement of healthy liver tissue with fibrotic scar tissue and the formation of regenerative nodules.Etiology of cirrhosisCirrhosis results from sustained liver injury that triggers progressive fibrosis and structural remodeling. The underlying causes are diverse, encompassing common and less frequent clinical conditions. Regardless of the origin, all causes lead to chronic inflammation, hepatocyte loss, and...
Cirrhosis II: Pathophysiology01:24

Cirrhosis II: Pathophysiology

Cirrhosis is a progressive chronic liver injury caused by prolonged inflammation, excessive fibrotic remodeling, and impaired regeneration. Over time, repeated hepatic insults disrupt the liver’s architecture and function, leading to reduced blood flow, impaired bile drainage, and diminished metabolic capacity.Pathophysiology of cirrhosisCirrhosis arises from three main responses to chronic liver damage: inflammation, immune activation, and hepatocyte death. These processes lead to structural...
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...
Chronic Pancreatitis I: Introduction01:25

Chronic Pancreatitis I: Introduction

Chronic pancreatitis is a long-standing, relapsing inflammation of the pancreas, characterized by irreversible damage to the gland. It results in progressive destruction of the pancreatic parenchyma, fibrosis, and eventual loss of both exocrine and endocrine function. The disease may evolve gradually after multiple episodes of acute pancreatitis or develop independently.EtiologyChronic pancreatitis can arise from a variety of causes:Alcohol use is the leading cause, accounting for 70–80% of...
Chronic Pancreatitis II: Pathophysiology01:21

Chronic Pancreatitis II: Pathophysiology

Chronic pancreatitis is a progressive and irreversible inflammation of the pancreas, most often caused by long-term alcohol abuse, but it can also be related to ductal obstruction, smoking, or genetic factors.Chronic pancreatitis occurs when the pancreas is repeatedly exposed to harmful agents like alcohol, smoking, ductal obstruction, or genetic predisposition. These factors lead to the release of toxic metabolites and inflammatory cytokines, sustaining chronic inflammation in the pancreatic...

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Related Experiment Video

Updated: Jun 20, 2026

Histological Analyses of Acute Alcoholic Liver Injury in Zebrafish
10:45

Histological Analyses of Acute Alcoholic Liver Injury in Zebrafish

Published on: May 25, 2017

[Histologic evolution of acute alcoholic hepatitis]

R Esteban, V Vargas, J D Pedreira

    Medicina Clinica
    |February 25, 1981
    PubMed
    Summary

    Stopping alcohol intake significantly improves outcomes for acute alcoholic hepatitis, even reversing centrilobular fibrosis. Continuous drinking often leads to unfavorable disease progression and persistent fibrosis.

    Area of Science:

    • Hepatology
    • Gastroenterology
    • Internal Medicine

    Context:

    • Acute alcoholic hepatitis is a common liver condition with clear diagnostic criteria.
    • Prognostic factors influencing its long-term outcome remain poorly understood.
    • Understanding disease progression is crucial for patient management and treatment strategies.

    Purpose:

    • To analyze the prognostic factors of acute alcoholic hepatitis evolution.
    • To investigate the impact of alcohol cessation on histologic changes and disease progression.
    • To assess the role of centrilobular fibrosis as a prognostic marker.

    Summary:

    • This study followed 18 patients with acute alcoholic liver disease over 35 months, using serial liver biopsies.
    • Patients who stopped drinking showed favorable histologic evolution and fibrosis resolution in most cases.

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    Generation of a Rat Model of Acute Liver Failure by Combining 70% Partial Hepatectomy and Acetaminophen
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    Generation of a Rat Model of Acute Liver Failure by Combining 70% Partial Hepatectomy and Acetaminophen

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    Last Updated: Jun 20, 2026

    Histological Analyses of Acute Alcoholic Liver Injury in Zebrafish
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    Published on: May 25, 2017

    The Murine Choline-Deficient, Ethionine-Supplemented (CDE) Diet Model of Chronic Liver Injury
    07:27

    The Murine Choline-Deficient, Ethionine-Supplemented (CDE) Diet Model of Chronic Liver Injury

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    Generation of a Rat Model of Acute Liver Failure by Combining 70% Partial Hepatectomy and Acetaminophen
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    Generation of a Rat Model of Acute Liver Failure by Combining 70% Partial Hepatectomy and Acetaminophen

    Published on: November 27, 2019

  • Continuous alcohol consumption was associated with unfavorable outcomes and persistent fibrosis, though some cases healed.

    • Impact:

    • Alcohol cessation is a key factor in improving the prognosis of acute alcoholic hepatitis.
    • Centrilobular fibrosis may not always be an unfavorable marker, especially with abstinence.
    • Disease evolution is influenced by factors beyond continuous alcohol abuse, highlighting the importance of behavioral changes.