Mitochondrial alterations in fatty liver diseases
Bernard Fromenty1, Michael Roden2
1INSERM, Univ Rennes, INRAE, Institut NUMECAN (Nutrition Metabolisms and Cancer) UMR_A 1341, UMR_S 1241, F-35000, Rennes, France.
Journal of Hepatology
|October 9, 2022
Summary
Fatty liver diseases harm liver mitochondria, impacting function and dynamics. Understanding hepatic mitochondria is key for treating obesity, diabetes, and alcohol-related liver conditions.
Area of Science:
- Hepatology
- Mitochondrial Biology
- Metabolic Diseases
Background:
- Fatty liver diseases stem from metabolic issues, toxins, or alcohol, affecting liver mitochondria.
- Impaired mitochondrial function (fatty acid oxidation, oxidative phosphorylation) drives oxidative stress in steatohepatitis.
- Hepatic mitochondria can adapt to metabolic changes, preventing fat buildup in obesity.
Purpose of the Study:
- To review current knowledge on hepatic mitochondria in fatty liver diseases.
- To focus on the role of mitochondria in obesity, type 2 diabetes, and xenobiotic exposure.
- To highlight the need for understanding interactions between metabolic and alcohol-related liver diseases.
Main Methods:
- Literature review of studies on hepatic mitochondria.
- Analysis of research on mitochondrial function in fatty liver disease.
- Synthesis of findings from clinical studies on diets and bariatric surgery.
Main Results:
- Abnormal mitochondrial function is a key feature of human steatohepatitis.
- Hepatic mitochondria exhibit adaptive flexibility in obesity.
- Xenobiotic exposure studies offer insights into mitochondrial regulation.
Conclusions:
- Hepatic mitochondria are crucial in fatty liver diseases linked to obesity and type 2 diabetes.
- Mitochondria are emerging as a therapeutic target for non-alcoholic fatty liver disease.
- Further research is needed on the interplay of metabolic and alcohol-related liver disease factors on mitochondria.
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