Homocysteine and age-associated disorders

Area of Science:

• Gerontology and Molecular Biology
• Biochemistry and Metabolism

Background:

• Aging is an inevitable process linked to cellular dysfunction, leading to various age-associated diseases.
• Accumulated cellular damage, metabolic changes, and impaired protein clearance contribute to tissue degeneration and reduced quality of life.
• Elevated homocysteine, a risk factor for cardiovascular and neurodegenerative diseases, increases with age due to declining renal function and altered methionine metabolism.

Purpose of the Study:

• To review the impact of elevated homocysteine levels on age-related physiological changes.
• To examine the contribution of homocysteine metabolism to the development and progression of age-associated diseases.
• To highlight the link between homocysteine, oxidative stress, and mitochondrial dysfunction in aging tissues.

Main Methods:

• Literature review of studies investigating aging mechanisms and homocysteine metabolism.
• Analysis of research on the relationship between homocysteine levels and age-related diseases.
• Synthesis of evidence on the role of homocysteine in cellular senescence and tissue degeneration.

Main Results:

• High homocysteine is associated with increased risk of cardiovascular disease, neurodegeneration, and chronic kidney disease.
• Impaired homocysteine metabolism contributes to oxidative stress, nitric oxide synthase pathway inactivation, and mitochondrial dysfunction.
• Aging is characterized by declining renal function and metabolic deregulation, leading to elevated homocysteine levels.

Conclusions:

• Elevated homocysteine is a significant factor in age-related tissue degeneration and disease.
• Understanding homocysteine's role is crucial for developing interventions against age-associated pathologies.
• Further research into homocysteine metabolism may offer therapeutic targets for mitigating aging effects.