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Responses to oxidative stress and antioxidant capacity in rats at different growth stages.
Journal of Physical Therapy Science 2023 December
[Purpose] Oxidative stress is regulated by antioxidant capacity in vivo . However, its impact on aging characteristics remains debatable. This study is first to report oxidative stress, antioxidant capacity, and their ratio in five age groups of rats, and aimed to provide basic data useful for disease prevention. [Materials and Methods] Sixty male Wistar rats of different ages were used as experimental animals, grouped as follows: weaned (three weeks), growth (eight weeks), adulthood (six months), middle-age (12 months), and old-age (24 months). To assess oxidative stress and antioxidant capacity, derivatives of reactive oxygen metabolites and biological antioxidant potential were measured. [Results] The lowest level of oxidative stress and the highest level of antioxidant capacity were observed during the weaning stage, and remarkable dynamic changes were observed until adulthood. The highest oxidative stress and lowest antioxidant capacity were observed in the old-age group. [Conclusion] In vivo oxidative stress and antioxidant capacity are largely reflected in the characteristics of aging, and this ratio is greatly influenced by the dynamics of oxidative stress and antioxidant capacity with age.
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