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Abstract #2031

GABA in the anterior cingulate cortex mediates the association of white matter hyperintensities with executive function

Xiaona Fu1, Peng Sun2, Xinli Zhang1, Dongyong Zhu1, Qian Qin1, Jue Lu1, and Jing Wang1
1Department of Radiology,Union Hospital,Tongji Medical College,Huazhong University of Science and Technology, Wuhan, China, 2Clinical & Technical Support, Philips Healthcare, Beijing 100600, China, Beijing, China

Synopsis

Keywords: White Matter, White Matter, Gamma-aminobutyric acid

Motivation: The alteration of cortical GABA levels in WMH patients and whether it mediates the association of WMH volume with executive function remain unclear

Goal(s): We investigated the cortical GABA levels, and whether cortical GABA mediates the association between WMH and executive function in the WMH people.

Approach: We used the independent samples test,general linear model,partial correlation analyses and mediation analysis.

Results: Patients with moderate to severe WMH showed lower GABA+/Cr in the anterior cingulate cortex (ACC) and worse executive function than mild WMH patients. And the GABA level in ACC mediates the association between white matter hyperintensities and executive function in WMH patients.

Impact: The GABA+/Cr level in the the anterior cingulate cortex had a critical role. And it mediates the association between white matter hyperintensities and executive function in the WMH patients.

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