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Apolipoprotein E deficiency and a mouse model of accelerated liver aging
F Bonomini1, L F Rodella, M Moghadasian
1Department of Clinical and Experimental Sciences, University of Brescia, Viale Europa 11, 25123 Brescia, Italy. bonomini@med.unibs.it
Biogerontology
|April 19, 2013
Summary
Apolipoprotein E (ApoE) null mice exhibit accelerated liver aging and oxidative stress, mimicking age-related liver disease. This model highlights cholesterol and oxidative stress roles in hepatic aging and injury.
Area of Science:
- Hepatology
- Gerontology
- Metabolic Research
Background:
- The liver is central to lipid metabolism, but ages, impairing its response to injury.
- Elderly individuals face increased liver disease incidence.
- Apolipoprotein E (ApoE) null mice, used for atherosclerosis, show age-linked liver alterations.
Purpose of the Study:
- To model ApoE null mice for oxidative stress-induced liver disease.
- To investigate how ApoE inactivation accelerates liver aging and disease.
Main Methods:
- Comparison of ApoE null and control mice at 6 weeks and 15 months.
- Analysis of liver morphology.
- Assessment of proteins involved in oxidative stress and liver aging.
Main Results:
- ApoE null mice displayed age-related changes: oxidative stress, pseudocapillarization, increased polyploidy, reduced hepatocyte count, and larger nuclei.
- These mice showed significant liver injury.
Conclusions:
- ApoE null mice serve as a model for age-related liver disease.
- Hypercholesterolemia and oxidative stress in ApoE null mice accelerate liver aging and injury.
