Pterostilbene Improves Cognitive Performance in Aged Rats: An in Vivo Study
Martina La Spina1,2, Gabriele Sansevero3,4, Lucia Biasutto1,2
1University of Padova, Department of Biomedical Science, Padova, Italy.
Summary
Pterostilbene (Pt) supplementation improved cognitive performance and memory consolidation in aged rats with mild cognitive impairment. This natural compound shows therapeutic potential for age-related cognitive decline.
Area of Science:
- Neuroscience
- Pharmacology
- Gerontology
Background:
- Pterostilbene (Pt) is a natural phenol found in blueberries and grapevines.
- Pt exhibits biomedical activities similar to resveratrol, with higher bioavailability.
- Age-related cognitive decline is a growing concern with limited therapeutic options.
Purpose of the Study:
- To evaluate the effects of chronic pterostilbene administration on cognitive performance.
- To investigate the impact of Pt on memory consolidation in aged rats with mild cognitive impairment.
Main Methods:
- 18-month-old rats with established mild cognitive impairment were used.
- Animals received chronic pterostilbene (Pt) administration (22.5 mg/kg/day) for 20 days.
- Cognitive performance was assessed using behavioral tests, followed by molecular analyses of brain tissues (dentate gyrus, hippocampus, prefrontal and perirhinal cortices) for synaptic remodeling and mitochondrial content.
Main Results:
- Pterostilbene (Pt) administration significantly improved performance in behavioral tests.
- Pt positively affected memory consolidation in aged rats.
- Increased levels of REST, PSD-95, and mitochondrial porin1 were observed in the dentate gyrus, with a positive correlation between T-maze test scores and phosphorylated CREB levels.
Conclusions:
- Pterostilbene (Pt) demonstrates therapeutic potential for mitigating age-related cognitive decline.
- Pt supplementation may offer a novel strategy for enhancing cognitive function in aging populations.
- Further research into Pt's mechanisms of action is warranted.
Keywords:
AgingCognitive declineObject in contextObject recognitionPterostilbeneSynaptic plasticityT-mazeMore Related Videos
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