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Increased hepatic lipid peroxidation in aged mice
M Uysal1, S Seckin, N Kocak-Toker
1Department of Biochemistry, Istanbul Faculty of Medicine, University of Istanbul, Turkey.
Mechanisms of Ageing and Development
|April 1, 1989
Summary
Aging increases lipid peroxidation in mice liver. Studies show higher levels of diene conjugate and malondialdehyde in older mice, indicating oxidative stress is a key factor in aging.
Area of Science:
- Gerontology
- Biochemistry
- Cellular Biology
Background:
- The free radical theory of aging is a prominent area of research.
- Lipid peroxidation is frequently studied in aging, but results vary.
- Evidence suggests a link between oxidative stress and aging processes.
Purpose of the Study:
- To investigate age-related changes in hepatic lipid peroxidation in male Swiss-Albino mice.
- To quantify specific markers of lipid peroxidation in different liver fractions.
Main Methods:
- Comparison of three age groups: 3, 6, and 18 months old.
- Measurement of diene conjugate and malondialdehyde levels.
- Analysis of liver homogenates, mitochondria, and microsomes.
Main Results:
- Significant increases in diene conjugate and malondialdehyde in liver homogenates and mitochondria of 18-month-old mice.
- Elevated malondialdehyde levels in microsomes of aged mice compared to younger groups.
- Both lipid peroxidation parameters were significantly higher in aged mice.
Conclusions:
- Hepatic lipid peroxidation increases with age in male Swiss-Albino mice.
- Oxidative stress, indicated by lipid peroxidation, plays a significant role in mouse aging.
- Age-related changes in lipid peroxidation are evident across different liver cellular fractions.