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Diseases of the Liver and Gallbladder01:26

Diseases of the Liver and Gallbladder

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Liver and gallbladder diseases are a significant health concern, with prominent conditions including cirrhosis, hepatitis, non-alcoholic fatty liver disease (NAFLD), and gallstones. Jaundice is a common manifestation of liver and biliary disease.
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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.
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Effect of Hepatic Disease on Pharmacokinetics: Drug Dosing and Hepatic Blood Flow01:26

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Chronic liver disease significantly impacts drug metabolism due to alterations in hepatic blood flow and enzyme accessibility. This disruption affects the body's pharmacokinetics—the movement and processing of drugs within the system. Key enzymes crucial for metabolizing medications become less accessible, changing how drugs are processed and utilized. Furthermore, liver disease influences the synthesis of plasma proteins, such as albumin and globulins, which play critical roles in drug...
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Esophageal Varices-II: Clinical Features and Management01:28

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Esophageal varices often manifest as gastrointestinal bleeding episodes, presenting symptoms like hematemesis (vomiting of blood), hematochezia (passing fresh blood via the rectum), and melena (black, tarry stools). Other signs can include weight loss, anorexia, abdominal discomfort, jaundice, pruritus, altered mental status, and muscle cramps.
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Effect of Hepatic Disease on Pharmacokinetics: Pathophysiologic Assessment and Liver Function Test01:22

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In clinical practice, the direct measurement of hepatic blood flow to evaluate liver function presents significant challenges due to the intricate and specialized nature of the necessary techniques. Consequently, healthcare professionals often rely on empirical estimates derived from thorough patient examinations and liver function tests to gauge liver health. Among the tools at their disposal, the Child–Pugh and MELD scoring systems stand out for their ability to categorize and assess...
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The liver, the largest gland within the human body, is a firm and reddish-brown organ. This wedge-shaped structure weighs approximately 1.5 kg and occupies a significant portion of the right hypochondriac and epigastric regions. It extends more to the right of the body's midline than to the left.
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Related Experiment Video

Updated: Oct 19, 2025

Bile Duct Ligation in Mice: Induction of Inflammatory Liver Injury and Fibrosis by Obstructive Cholestasis
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Liver cirrhosis.

Pere Ginès1, Aleksander Krag2, Juan G Abraldes3

  • 1Liver Unit, Hospital Clinic of Barcelona, Barcelona, Spain; Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain; Institute of Biomedical Investigation August Pi I Sunyer, Barcelona, Spain; Hepatic and Digestive Diseases Biomedical Investigation Center, Madrid, Spain.

Lancet (London, England)
|September 20, 2021
PubMed
Summary
This summary is machine-generated.

Cirrhosis, a widespread liver disease, results from chronic inflammation and scarring. Early detection and management of causes are crucial for preventing complications and improving outcomes.

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Area of Science:

  • Hepatology
  • Gastroenterology
  • Internal Medicine

Background:

  • Cirrhosis is a prevalent global liver condition with diverse etiologies including obesity, viral hepatitis, and alcohol abuse.
  • It arises from prolonged liver inflammation, leading to fibrosis, regenerative nodules, and portal hypertension.
  • The disease progresses from compensated to decompensated stages, significantly impacting quality of life and mortality.

Purpose of the Study:

  • To provide a comprehensive overview of cirrhosis, encompassing its epidemiology, pathophysiology, and clinical management.
  • To outline current recommendations for diagnosing and managing cirrhosis and its associated complications.
  • To identify future challenges and research priorities in the field of liver cirrhosis.

Main Methods:

  • This seminar synthesizes current knowledge on cirrhosis.
  • It reviews established diagnostic criteria and therapeutic strategies.
  • It discusses the progression and outcomes of liver cirrhosis.

Main Results:

  • Cirrhosis is characterized by progressive liver damage, portal hypertension, systemic inflammation, and potential liver failure.
  • Management focuses on addressing underlying causes and treating complications, with liver transplantation as a potential option.
  • Disease progression significantly increases morbidity and mortality.

Conclusions:

  • Effective management of cirrhosis requires addressing its causes and complications.
  • Future efforts should focus on early fibrosis screening, timely intervention, and complication prevention.
  • Improved strategies are needed to reduce the global burden of liver cirrhosis.