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Gut-brain axis goes viral?

Gut-brain axis goes viral?

Gut-brain axis goes viral?

A recent article in “Cell Host & Microbiome” by Mayneris-Perxachs et. al. showed the importance of phage, the viruses that infect bacteria, in the gut microbiome. They were able to discover and then demonstrate that higher levels of a particular phage in the gut led to increased mental capacity.

Below is a direct quote of their summary.

“Growing evidence implicates the gut microbiome in cognition. Viruses, the most abundant life entities on the planet, are a commonly overlooked component of the gut virome, dominated by the Caudovirales and Microviridae bacteriophages. Here, we show in a discovery (n = 114) and a validation cohort (n = 942) that subjects with increased Caudovirales and Siphoviridae levels in the gut microbiome had better performance in executive processes and verbal memory. Conversely, increased Microviridae levels were linked to a greater impairment in executive abilities. Microbiota transplantation from human donors with increased specific Caudovirales (>90% from the Siphoviridae family) levels led to increased scores in the novel object recognition test in mice and up-regulated memory-promoting immediate early genes in the prefrontal cortex. Supplementation of the Drosophila diet with the 936 group of lactococcal Siphoviridae bacteriophages resulted in increased memory scores and upregulation of memory-involved brain genes. Thus, bacteriophages warrant consideration as novel actors in the microbiome-brain axis.”

Just goes to show how connected we are to everything!

The full paper is available free at

https://www.sciencedirect.com/science/article/pii/S193131282200049X

 

https://www.sciencedirect.com/science/article/pii/S193131282200049X