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Abstract #3197

Impaired Functional Connectivity in a Rat Model and Humans with Fragile X Syndrome.

Joanna A.B. Smith1,2,3, Andrew G. McKechanie2,3,4, Milou Straathof5, Rick M. Dijkhuizen5, Sumantra Chattarji2,3,6, Andrew C Stanfield2,3,4, Sally M. Till1,2,3, and Peter C. Kind1,2,3

1Centre for Discovery Brain Sciences, The University of Edinburgh, Edinburgh, United Kingdom, 2Patrick Wild Centre, The University of Edinburgh, Edinburgh, United Kingdom, 3Simons Initiative for the Developing Brain, Edinburgh, United Kingdom, 4Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, United Kingdom, 5Center for Image Sciences, University Medical Center Utrecht, Utrecht, Netherlands, 6Centre for Brain Development and Repair, Institute for Stem Cell Biology and Regenerative Medicine, Bangalore, India

A key requirement for the effective development of novel therapies for Intellectual Disabilities is the ability to directly compare findings from basic neuroscience in rodent models with human studies. Functional magnetic resonance imaging offers a platform to overcome this translational barrier. Here, we use a parallel resting state fMRI approach in individuals with Fragile X Syndrome (FXS) and in a rat model of FXS using a 3T and 7T scanner respectively, and show that the loss of Fragile X mental retardation protein leads to a shared decrease in DMN connectivity in humans with FXS and rats that model this disorder.

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