FUNCTIONS OF THE ANTIOXIDANT SYSTEM IN THE ANIMAL BODY

Abstract

Free radicals are dangerous because they can easily interact with other biomolecules, including nucleic acids, proteins and free amino acids, lipids and carbohydrates. Such interactions can lead to disruption of cell membrane function, metabolic processes, and genetic expression. In situations where the defense forces do not cope, as a result of increased oxygen concentration or a decrease in antioxidant defense mechanisms, a state of oxidative stress occurs. This can lead to either immediate cell death or more subtle and chronic damage, such as the development of malignant neoplasms. There is now increasing evidence that the tissue damage that accompanies the aging process is caused by the formation of free radicals. Based on the available evidence, it has been suggested that life expectancy can be increased by five years or more through dietary modifications. To protect the body from RFK, animals and humans have developed a very powerful and complex antioxidant defense system. It includes various components of endogenous and exogenous origin.