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Abstract #5257

Diffusion Tensor Imaging to Investigate Diet-induced Changes in Neuronal Tissue Microstructure and Organization

Maribel Torres Velazquez1, M. Elizabeth Meyerand1,2,3, and John-Paul J. Yu1,3,4,5

1Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, United States, 2Medical Physics, University of Wisconsin-Madison, Madison, WI, United States, 3Radiology, University of Wisconsin-Madison, Madison, WI, United States, 4Neuroscience, University of Wisconsin-Madison, Madison, WI, United States, 5Psychiatry, University of Wisconsin-Madison, Madison, WI, United States

Altered gut microbiome populations are associated with a broad range of neurodevelopmental disorders. Disruption of the gut microbiome via dietary intake has been shown to influence brain function and behavior in animal models. Utilizing diffusion tensor imaging we identified global changes in white matter structural integrity occurring in a diet-dependent manner. Subsequent diet-crossover experiments demonstrate the varying permanence of these diet-induced changes and the degree of plasticity associated with these changes. These studies allow us to further explore our understanding of the gut-brain-microbiota axis by revealing possible links between altered and dysbiotic gut microbiome populations and changes in brain structure.

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