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Related Concept Videos

Liver Physiology01:30

Liver Physiology

The liver, an essential organ in the human body, performs over 200 vital functions that can be broadly categorized into metabolic, hematological, endocrine regulation, and bile production.
Metabolic Regulation:
The liver is the central organ involved in regulating blood composition. It stabilizes blood glucose levels, maintaining them within the range of  70–110 mg/dL. When these levels drop, the liver breaks down glycogen reserves and releases glucose into the bloodstream. It can also...
Diseases of the Liver and Gallbladder01:26

Diseases of the Liver and Gallbladder

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.
Cirrhosis is characterized by the scarring of hepatic lobules in the liver, which are replaced by fibrous tissue, affecting the liver's normal functioning. NAFLD, on the other hand, is caused by an excessive build-up of fat in the liver, not related to...
Obesity01:24

Obesity

The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in adipocytes...
Pharmacokinetics in Obese Patients: Drug Absorption and Distribution01:25

Pharmacokinetics in Obese Patients: Drug Absorption and Distribution

Obesity significantly alters the pharmacokinetic processes of drug absorption and distribution, presenting unique challenges in medical treatment. The increased fat tissue and decreased lean muscle in obese individuals can significantly affect how drugs are absorbed into the body and distributed across different tissues. This alteration can lead to variances in the effectiveness and safety of medications, necessitating adjustments in dosing or drug selection for obese patients.One notable...
Pharmacokinetics in Obese Patients: Drug Metabolism and Excretion01:20

Pharmacokinetics in Obese Patients: Drug Metabolism and Excretion

Drug metabolism, a critical process in the liver, involves two primary phases: Phase I reactions and Phase II conjugation. Obesity introduces significant alterations in this metabolic process, primarily due to fatty infiltration of the liver, leading to conditions such as nonalcoholic fatty liver disease (NAFLD). This condition can modify the activities of both Phase I and II enzymes, impacting how drugs are metabolized in obese patients.Phase I metabolism sees variable effects across...
Cholecystitis01:20

Cholecystitis

Cholecystitis is inflammation of the gallbladder, most commonly caused by obstruction of the cystic duct. This blockage prevents bile from draining, leading to gallbladder distension, inflammation, and potentially serious complications. This condition may present acutely or chronically and can happen with or without gallstones.EtiologyAbout 95% of cholecystitis cases are calculous, caused by gallstones blocking the cystic duct, leading to bile accumulation and inflammation of the gallbladder...

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Related Experiment Video

Updated: Jun 27, 2026

Isolation, Characterization, and Purification of Macrophages from Tissues Affected by Obesity-related Inflammation
07:46

Isolation, Characterization, and Purification of Macrophages from Tissues Affected by Obesity-related Inflammation

Published on: April 3, 2017

Liver in obesity.

A Braillon, J P Capron, M A Hervé

    Gut
    |February 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    Obesity alone does not cause severe liver damage. Excessive alcohol intake and drug consumption are linked to advanced liver disease in obese individuals, not obesity itself.

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    Novel In Vivo Micro-Computed Tomography Imaging Techniques for Assessing the Progression of Non-Alcoholic Fatty Liver Disease
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    Isolation, Characterization, and Purification of Macrophages from Tissues Affected by Obesity-related Inflammation
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    Novel In Vivo Micro-Computed Tomography Imaging Techniques for Assessing the Progression of Non-Alcoholic Fatty Liver Disease
    08:41

    Novel In Vivo Micro-Computed Tomography Imaging Techniques for Assessing the Progression of Non-Alcoholic Fatty Liver Disease

    Published on: March 24, 2023

    Area of Science:

    • Hepatology
    • Clinical Nutrition
    • Obesity Medicine

    Background:

    • Non-alcoholic fatty liver disease (NAFLD) is a growing concern in obese populations.
    • The specific contribution of obesity versus other lifestyle factors to liver damage requires clarification.

    Purpose of the Study:

    • To investigate the clinical, nutritional, and histological factors associated with liver damage in obese subjects.
    • To determine the role of obesity per se versus other variables in the pathogenesis of hepatic lesions.

    Main Methods:

    • Clinical, nutritional, and liver biopsy data were collected from 50 non-selected obese patients.
    • Multidimensional analysis was used to assess relationships between clinical variables and liver damage severity.
    • Patients were categorized into five groups based on hepatic lesion severity (normal, fatty liver, fatty hepatitis, fatty fibrosis, fatty cirrhosis).

    Main Results:

    • Severe liver damage (fibrosis and cirrhosis) was strongly associated with excessive alcohol intake.
    • Severe fatty liver changes correlated significantly with the degree of overweight, diabetes mellitus, and alcohol/fat intake.
    • Nutritional deficiencies had a minor role in mild inflammation and fibrosis; drug consumption may contribute to cirrhosis.

    Conclusions:

    • Obesity alone does not appear to cause severe liver damage.
    • Alcohol consumption is a critical factor in the progression of liver disease in obese individuals.
    • Hepatotoxic drug use may also play a role in the development of cirrhosis in this population.