Digging deeper, the researchers identified specific changes that occur in the composition of the gut microbiome of mice as they age. In particular, the relative abundance of a bacteria called Parabacteroides goldsteinii increases in old mice and is directly associated with cognitive decline in the animals. They showed that colonizing the guts of young mice with this bacterial species inhibited their performance on the object recognition and maze escape tasks, and that this deficit correlated with a reduction of activity in the hippocampus.
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Incorrect measurements do not lead to soundness or correctness issues, so providing accurate answers is “just” a quality-of-life concern.，推荐阅读手游获取更多信息
Фото: Bernadett Szabo / Reuters