Omega-3 Polyunsaturated Fatty Acids Mitigate Working Memory Decline Through Feeding a Low-Carbohydrate and High-Protein Diet in Healthy Mice

Scout Impact

This study examines the impact of omega-3 polyunsaturated fatty acids (n-3 PUFAs) on memory decline induced by a low-carbohydrate, high-protein (LC-HP) diet in mice. The data confirms that n-3 PUFAs, particularly DHA, counteract memory decline by modulating hippocampal signaling pathways. Scout confirms its penalty for LC-HP diets lacking omega-3 supplementation due to their potential cognitive drawbacks.

Key Findings

• Finding 1: LC-HP diet reduced working memory as shown by decreased alternation rate in Y-maze test.
• Finding 2: n-3 PUFA supplementation, especially DHA, enhanced working memory in LC-HP diet-fed mice.
• Finding 3: DHA significantly reversed downregulation of hippocampal Lrp6 and Dcx mRNA expressions.
• Finding 4: Hippocampal Lrp6, Wnt5a, and Dcx mRNA levels showed significant positive correlations in LC-HP diet-fed mice.
• Finding 5: n-3 PUFAs were administered at 0.5 g/kg body weight daily for four weeks.

Limitations

• Limitation 1: The study was conducted on mice, which may limit direct applicability to humans.
• Limitation 2: The study duration was only four weeks, which may not capture long-term effects.