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Related Concept Videos

Overview of Lipid Metabolism01:24

Overview of Lipid Metabolism

Lipid metabolism is a crucial process in the human body that involves the synthesis and degradation of lipids. This process is essential for energy production, cell membrane formation, and hormone production, among other functions.
Lipolysis: The Breakdown of Lipids:
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Electron Transport Chain: Complex I and II01:46

Electron Transport Chain: Complex I and II

The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...
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...
Mitochondria01:37

Mitochondria

Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
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...
Cirrhosis I: Introduction01:23

Cirrhosis I: Introduction

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Related Experiment Video

Updated: Jul 8, 2026

Phosphorus-31 Magnetic Resonance Spectroscopy: A Tool for Measuring In Vivo Mitochondrial Oxidative Phosphorylation Capacity in Human Skeletal Muscle
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Phosphorus-31 Magnetic Resonance Spectroscopy: A Tool for Measuring In Vivo Mitochondrial Oxidative Phosphorylation Capacity in Human Skeletal Muscle

Published on: January 19, 2017

Nonalcoholic fatty liver disease and mitochondrial dysfunction.

Yongzhong Wei1, R Scott Rector, John P Thyfault

  • 1Division of Gastroenterology and Hepatology, Harry S. Truman VA Medical Center, Columbia, MO 65212, United States.

World Journal of Gastroenterology
|January 12, 2008
PubMed
Summary

Mitochondrial dysfunction is key in developing nonalcoholic fatty liver disease (NAFLD), a common liver condition. Understanding this role is vital for NAFLD treatment strategies.

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Published on: May 18, 2021

Area of Science:

  • Hepatology
  • Mitochondrial Biology
  • Metabolic Syndrome

Background:

  • Nonalcoholic fatty liver disease (NAFLD) is the most prevalent liver disorder globally, encompassing conditions from hepatic steatosis to cirrhosis.
  • Its incidence is rapidly increasing worldwide, driven by the escalating prevalence of metabolic syndrome, obesity, and insulin resistance.
  • NAFLD can progress to severe outcomes like hepatocellular carcinoma (HCC) and liver failure, highlighting the urgent need for effective interventions.

Purpose of the Study:

  • To review the critical role of hepatic mitochondria in the pathogenesis of nonalcoholic fatty liver disease (NAFLD).
  • To elucidate how mitochondrial dysfunction contributes to lipid accumulation in hepatocytes, a hallmark of NAFLD.
  • To consolidate current understanding of mitochondria's involvement in NAFLD progression.

Main Methods:

  • This review synthesizes existing research and literature on NAFLD and mitochondrial function.
  • It focuses on studies investigating the link between mitochondrial abnormalities and the development of NAFLD.
  • Key findings from experimental and clinical research are analyzed to understand pathogenic mechanisms.

Main Results:

  • Hepatic mitochondrial dysfunction is increasingly recognized as a central factor in NAFLD development.
  • Mitochondria's role as cellular powerhouses is compromised in NAFLD, leading to metabolic derangements.
  • Specific mitochondrial defects contribute to steatosis, inflammation, and fibrosis in the liver.

Conclusions:

  • Mitochondrial dysfunction is a critical driver in the pathogenesis of nonalcoholic fatty liver disease (NAFLD).
  • Targeting mitochondrial pathways presents a promising therapeutic avenue for managing and treating NAFLD.
  • Further research into hepatic mitochondrial biology is essential for developing novel NAFLD treatments.