Abstract
As an important factor leading to aging and chronic diseases, oxidative stress has become a hot research topic. Trehalose is a natural sugar widely found in many edible plants, animals and natural microorganisms, and recent studies have suggested that trehalose is an antioxidant, although its underlying molecular mechanism is unclear. Therefore, we evaluated the protective mechanism of trehalose against oxidative stress-induced senescence. In the mouse model of d-galactose (D-gal) induced aging, we found that trehalose significantly reversed the learning and memory impairment caused by D-gal and improved the ability to explore unknown things, which was associated with a significant reduction in brain tissue damage. Further studies have shown that trehalose activates the expressions of downstream target genes HO-1, NQO1, SOD, GSH and CAT by promoting the nuclear translocation of Nrf2 in the liver. The detoxification ability of organs is increased, antioxidant enzyme activity is enhanced, lipid peroxidation is reduced, and the secretion of inflammatory factors TNF-α, IL-1β, il-6 is decreased. In conclusion, trehalose play an anti-aging role by activating genes related to Nrf2 pathway.
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