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Updated: Dec 21, 2025

Author Spotlight: Unveiling Mitochondrial Function and Cellular Metabolic Adaptation in Metabolic Diseases
Published on: October 4, 2024
[The malate enzyme--organ activity and age dependence]
1Institut für Klinische Chemie und Laboratoriumsdiagnostik, Bereichs Medizin der Karl-Marx-Universität Leipzig.
Malic enzyme activity is highest in the adult female rat liver and decreases with age in most tissues. Brain tissue shows a different age-dependent pattern for malic enzyme levels.
Area of Science:
- Biochemistry
- Enzymology
- Physiology
Context:
- Malic enzyme (ME) is a key enzyme in cellular metabolism, particularly in lipogenesis and NADPH production.
- Understanding ME activity across different organs and ages is crucial for metabolic research.
Purpose:
- To investigate the age-dependent changes in malic enzyme activity in various rat organs.
- To identify which organs exhibit the highest and lowest malic enzyme levels and how these change with age.
Summary:
- Malic enzyme activity was highest in the liver of adult female rats.
- Activity decreased in the order: heart, kidney, brain, skeletal muscle, adipose tissue, and lung.
- Except for the brain, all studied tissues showed an age-dependent reduction in malic enzyme activity.
Impact:
- Provides baseline data on malic enzyme distribution and age-related changes in rats.
- Highlights potential tissue-specific metabolic adaptations during aging.
- Informs future research on metabolic disorders and age-related physiological changes.
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