Would carnosine or a carnivorous diet help suppress aging and associated pathologies?

Area of Science:

• Biochemistry
• Gerontology
• Neuroscience

Background:

• Carnosine (beta-alanyl-L-histidine) is an animal tissue dipeptide with demonstrated potential to inhibit biochemical changes associated with aging and disease.
• Key aging processes include protein oxidation, glycation, advanced glycosylation end-product (AGE) formation, and cross-linking, which are implicated in diabetes, its complications, and neurodegeneration.

Purpose of the Study:

• To explore the potential of carnosine and related compounds in combating age-related protein carbonyl stress.
• To investigate carnosine's therapeutic utility in neurodegenerative conditions, particularly given its presence in olfactory tissue and the link between olfactory dysfunction and neurodegeneration.
• To evaluate the potential benefits of carnosine-rich carnivorous diets, referencing its efficacy in suppressing diabetic complications in mice.

Main Methods:

• Review of carnosine's biochemical properties, including antiglycating activity, reactivity toward carbonyls, and metal-chelating capabilities.
• Analysis of existing research on carnosine's effects on aging markers, diabetic complications in animal models, and its role in neurodegenerative processes.
• Consideration of olfactory administration as a targeted delivery method to bypass serum carnosinases.

Main Results:

• Carnosine exhibits antiglycating properties and can react with deleterious carbonyls, suggesting its efficacy against protein carbonyl stress.
• Its zinc- and copper-chelating activities, coupled with low toxicity, further support its potential therapeutic applications.
• Preliminary evidence suggests carnosine can suppress certain diabetic complications in mice and may be relevant for neurodegenerative conditions.

Conclusions:

• Carnosine's multifaceted biochemical activities position it as a promising agent against age-related protein damage and associated pathologies.
• Further research into carnosine's therapeutic potential, especially for neurodegenerative diseases via direct tissue administration, is warranted.
• Dietary carnosine intake, such as from carnivorous diets, may offer health benefits by mitigating aging-related biochemical changes.