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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,...

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Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
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[Erroneous prolactin determination caused by heterophile antibodies].

Geburtshilfe und Frauenheilkunde·1995

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Guidelines of AgNOR quantitation. Committee on AgNOR Quantitation within the European Society of Pathology.

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Related Experiment Video

Updated: Jul 12, 2026

Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People

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[Gene expression, metabolic regulation and aging].

W Rotzsch, H Martin, R Martin

Zeitschrift Fur Die Gesamte Innere Medizin Und Ihre Grenzgebiete

|March 1, 1981

Summary

Biological aging involves genetically fixed and environmental factors affecting cellular metabolism over time. This complex process impacts gene expression, protein biosynthesis, and enzymatic reactions, leading to age-related functional decline.

Area of Science:

Gerontology and Molecular Biology
Biochemistry and Genetics

Context:

Biological aging is a time-dependent process involving structural and functional changes from birth to death.
Aging is influenced by both predetermined genetic factors and unprogrammed environmental interactions.
Throughout life, the genome and nucleic acids are subject to influences affecting gene expression.

Purpose:

To explore the multifaceted nature of biological aging.
To investigate the molecular mechanisms underlying age-related changes.
To understand the interplay between genetic and environmental factors in aging.

Summary:

Biological aging encompasses genetically determined and environmentally influenced changes in structure and function over an organism's lifespan.
Influences on the genome and nucleic acids alter gene expression and hormonal sensitivity.

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Decreased protein biosynthesis can be enhanced by amino acids and SH-substances, while age-related metabolic and enzymatic changes occur at the cellular level.

Impact:

Provides a foundational understanding of biological aging as a complex, multiform process.
Highlights the cellular metabolism as the fundamental level for observing aging phenomena.
Suggests potential targets for interventions by identifying key molecular and metabolic alterations.