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Folic acid prevents habituation memory impairment and oxidative stress in an aging model induced by D-galactose

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Abstract

The present study aimed to evaluate the effect of folic acid treatment in an animal model of aging induced by D-galactose (D-gal). For this propose, adult male Wistar rats received D-gal intraperitoneally (100 mg/kg) and/or folic acid orally (5 mg/kg, 10 mg/kg or 50 mg/kg) for 8 weeks. D-gal caused habituation memory impairment, and folic acid (10 mg/kg and 50 mg/kg) reversed this effect. However, folic acid 50 mg/kg per se caused habituation memory impairment. D-gal increased the lipid peroxidation and oxidative damage to proteins in the prefrontal cortex and hippocampus from rats. Folic acid (5 mg/kg, 10 mg/kg, or 50 mg/kg) partially reversed the oxidative damage to lipids in the hippocampus, but not in the prefrontal cortex, and reversed protein oxidative damage in the prefrontal cortex and hippocampus. D-gal induced synaptophysin and BCL-2 decrease in the hippocampus and phosphorylated tau increase in the prefrontal cortex. Folic acid was able to reverse these D-gal-related alterations in the protein content. The present study shows folic acid supplementation as an alternative during the aging to prevent cognitive impairment and brain alterations that can cause neurodegenerative diseases. However, additional studies are necessary to elucidate the effect of folic acid in aging.

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Acknowledgments

Experimental Neurology Laboratory (Brazil) is funded by grants from National Council for Scientific and Technological Development (CNPq), Brazilian Coordination of Improvement of Higher Education Personnel (CAPES), Foundation for Support of Research and Innovation of Santa Catarina (FAPESC) and University of Southern Santa Catarina (UNESC).

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Correspondence to Josiane Budni.

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All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.

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Garcez, M.L., Cassoma, R.C.S., Mina, F. et al. Folic acid prevents habituation memory impairment and oxidative stress in an aging model induced by D-galactose. Metab Brain Dis 36, 213–224 (2021). https://doi.org/10.1007/s11011-020-00647-7

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  • DOI: https://doi.org/10.1007/s11011-020-00647-7

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