Effects of Caloric Restriction on Spatial Object Recognition Memory, Hippocampal Neuron Loss and Neuroinflammation in
Marta Portero-Tresserra1, Neus Galofré-López1, Elisabet Pallares1
1Departament de Psicobiologia i Metodologia de les Ciències de la Salut, Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain.
Nutrients
|April 13, 2023
Summary
Caloric restriction (CR) benefits aged rats by improving spatial object recognition memory. This dietary intervention also reduces hippocampal neuron loss and neuroinflammation, supporting brain health during aging.
Area of Science:
- Neuroscience
- Aging Research
- Cognitive Science
Background:
- Age-related changes impact hippocampal function and spatial memory.
- Neuroinflammation and lifestyle factors influence cognitive aging.
- The effects of caloric restriction (CR) on age-related cognitive decline are not fully understood.
Purpose of the Study:
- To investigate the impact of CR on spatial object recognition (SOR) memory in aged rats.
- To assess CR's effects on hippocampal neuron loss, neurogenesis, and inflammation in aging.
Main Methods:
- Aged male Wistar rats were subjected to caloric restriction.
- Spatial object recognition memory was evaluated.
- Hippocampal neuron loss, neurogenesis, and microglial activation were analyzed.
Main Results:
- CR attenuated the decline in SOR memory in aged rats.
- Caloric restriction reduced age-associated hippocampal neuron loss and microglial activation.
- Neurogenesis was significantly reduced in aged rats compared to adults, an effect potentially modulated by CR.
Conclusions:
- Caloric restriction positively impacts SOR memory in aging.
- CR appears to mitigate hippocampal neuronal loss and reduce proinflammatory activity.
- These findings suggest CR as a potential strategy to counteract age-related cognitive deficits.
