The Effect of the Combination of Two Postbiotics on Anxiety-like Behavior in Animal Models

With increasing evidence showing the connections between the microbiome, neurophysiology, and behavior, our research endeavors to investigate whether the consumption of a combination of two postbiotics with antioxidant effects can affect behavior regulation in model species. Here, we worked with a c...

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Main Authors: Vanesa Robles, Ferran Balaguer, Miren Maicas, Juan Manuel Martínez-Vázquez, Patricia Martorell, Marta Tortajada, Daniel Ramón, David G. Valcarce
Format: Article
Language:English
Published: MDPI AG 2024-12-01
Series:Cells
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Online Access:https://www.mdpi.com/2073-4409/13/23/2006
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Summary:With increasing evidence showing the connections between the microbiome, neurophysiology, and behavior, our research endeavors to investigate whether the consumption of a combination of two postbiotics with antioxidant effects can affect behavior regulation in model species. Here, we worked with a combination (1:1 ratio) of heat-treated <i>Bifidobacterium longum</i> subsp. <i>longum</i> ES1 (CECT7347) and <i>Lacticaseibacillus rhamnosus</i> BPL15 (CECT8361) as a dietary supplement. To examine the potential benefit of using this formulation to alleviate anxiety-like behavior, we employed two model species, <i>Caenorhabditis elegans</i> and adult <i>Danio rerio</i>. In <i>C. elegans</i>, the postbiotic supplementation reduced the anxiety-related behavior analyzed by means of the octanol avoidance test. In zebrafish, the novel tank test indicated a different swimming pattern 2 and 4 months after the animals were fed with the postbiotic combination. While fish did not exhibit any variance in their locomotion parameters such as pace and speed, they showed a statistically significant preference to spend more time in the upper zone of the water tank, a behavior that is correlated with a lower anxiety-like behavior in these species. Our aim with this study is to present evidence that can be used to develop whole-cell postbiotic-based novel and innovative dietary supplements for anxiety-related conditions.
ISSN:2073-4409