Nutrigenetics and modulation of oxidative stress

Area of Science:

• Nutrigenetics
• Biochemistry
• Molecular Biology

Background:

• Oxidative stress arises from an imbalance between reactive species production and antioxidant defenses.
• Exogenous antioxidants (e.g., vitamins C, E, carotenoids) and endogenous antioxidant enzymes play crucial roles in mitigating oxidative stress.
• Genetic variations in antioxidant metabolism can affect individual susceptibility to oxidative stress and related diseases.

Purpose of the Study:

• To review recent nutrigenetic studies on the interactions between diet, genetic variations in antioxidant enzymes, and oxidative stress.
• To explore how genetic polymorphisms in antioxidant enzymes influence their activity and impact disease risk.
• To highlight the role of environmental factors, such as diet, in modulating the effects of genetic variations on oxidative stress.

Main Methods:

• Literature review of nutrigenetic studies.
• Analysis of research on genetic polymorphisms in antioxidant enzymes (e.g., superoxide dismutase, catalase, glutathione peroxidase).
• Examination of studies investigating dietary influences on antioxidant metabolism and oxidative stress markers.

Main Results:

• Genetic variations in antioxidant enzymes can alter serum antioxidant levels and cellular exposure.
• Polymorphisms in genes coding for antioxidant enzymes are linked to various chronic diseases, including cancer, type 2 diabetes, and cardiovascular disease.
• Inconsistent findings in genetic association studies may be explained by gene-environment interactions, particularly dietary factors.

Conclusions:

• Nutrigenetics offers insights into personalized approaches for managing oxidative stress through diet and understanding genetic predispositions.
• Understanding the interplay between diet, genetic variations, and oxidative stress is crucial for disease prevention and management.
• Further research is needed to elucidate the complex interactions and develop targeted interventions.