Synergistic effects of tilapia head protein hydrolysate and walnut protein hydrolysate on the amelioration of cognitive impairment in mice

Author:

Ji Jun123ORCID,Yi Xiangzhou2,Gao Xia2,Wang Bohui2ORCID,Zhang Xueying2,Shen Xuanri12,Xia Guanghua2ORCID

Affiliation:

1. College of Food Science and Technology Hainan Tropical Ocean University Sanya China

2. Hainan Provincial Engineering Research Center of Aquatic Resources Efficient Utilization in the South China Sea, College of Food Science and Technology Hainan University Haikou China

3. Univ. Lyon, University Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007 Villeurbanne France

Abstract

AbstractBACKGROUNDCognitive impairment (CI) is a significant public health concern, and bioactive peptides have shown potential as therapeutic agents. However, information about their synergistic effects on cognitive function is still limited. Here, we investigated the synergistic effects of tilapia head protein hydrolysate (THPH) and walnut protein hydrolysate (WPH) in mitigating CI induced by scopolamine in mice.RESULTSThe results showed that the combined supplementation of THPH and WPH (mass ratio, 1:1) was superior to either individual supplement in enhancing spatial memory and object recognition abilities in CI mice, and significantly lessened brain injury in CI mice by alleviating neuronal damage, reducing oxidative stress and stabilizing the cholinergic system. In addition, the combined supplementation was found to be more conducive to remodeling the gut microbiota structure in CI mice by not only remarkably reducing the ratio of Firmicutes to Bacteroidota, but also specifically enriching the genus Roseburia. On the other hand, the combined supplementation regulated the disorders of sphingolipid and amino acid metabolism in CI mice, particularly upregulating glutathione and histidine metabolism, and displayed a stronger ability to increase the expression of genes and proteins related to the brain‐derived neurotrophic factor (BDNF)/TrkB/CrEB signaling pathway in the brain.CONCLUSIONThese findings demonstrate that tilapia head and walnut‐derived protein hydrolysates exerted synergistic effects in ameliorating CI, which was achieved through modulation of gut microbiota, serum metabolic pathways and BDNF signaling pathways. © 2024 Society of Chemical Industry.

Publisher

Wiley

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