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The Maillard hypothesis on aging: time to focus on DNA
1Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA. baynes@mail.chem.sc.edu
Annals of the New York Academy of Sciences
|April 27, 2002
Summary
Aging results from chemical damage to biomolecules, particularly DNA. This genomic damage, accumulating as silent mutations, significantly impacts organism viability and is linked to aging and disease processes.
Area of Science:
- Biochemistry
- Molecular Biology
- Gerontology
Background:
- Aging is characterized by the accumulation of chemical modifications to biomolecules.
- Proteins accumulate damage like advanced glycation and lipoxidation end products (AGEs, ALEs).
- Oxidative reactions contribute significantly to age-related molecular damage.
Purpose of the Study:
- To investigate the role of chemical modifications, especially genomic damage, in the aging process.
- To understand how DNA damage affects organism viability and disease.
- To explore potential biomarkers for Maillard reactions in aging.
Main Methods:
- Analysis of protein modifications including AGEs and ALEs.
- Assessment of genomic damage accumulation and repair dynamics.
- Investigation of Maillard reaction intermediates in urine as potential biomarkers.
Main Results:
- Chronic chemical modifications compromise biomolecule structure and function.
- Genomic damage, manifesting as silent mutations, profoundly impacts organism viability.
- Maillard reaction products in urine may serve as indicators of DNA damage in aging.
Conclusions:
- The balance between DNA modification and repair dictates genomic damage accumulation during aging.
- Silent mutations in DNA are a critical factor in aging and age-related diseases.
- Urinary analysis of modified purines and pyrimidines could offer insights into DNA damage and aging.