PURPOSE: Increased Body-Mass-Index (BMI) has been associated with brain atrophy in both gray and white matter structures. However, little is known concerning the integrity of white matter tracts in obesity. The purpose of the study was to evaluate the pattern of changes in white matter microstructure in human adiposity. MATERIAL AND METHODS: The study included 268 participants (52 obese, 96 overweight and 120 normal-weight) that were retrospectively evaluated by Diffusion Tensor Imaging. The fractional anisotropy, axial, radial and mean diffusivity values were compared between the above groups using Tract Based Spatial Statistics. RESULTS: The analysis revealed that the increased BMI was related with decreased fractional anisotropy in several white matter regions including the anterior and posterior thalamic radiation, the inferior fronto-occipital fasciculus, the inferior and superior longitudinal fasciculus, the corpus callosum (callosal body and forceps minor), the uncinate fasciculus, the internal capsule, the corticospinal tract and the cingulum (cingulate gyrus and hippocampus). CONCLUSIONS: Anisotropic diffusion of anatomic regions governing important brain circuits such as reward seeking inhibition, motivation/drive and learning/conditioning decreases with increasing BMI. Copyright Â
PURPOSE: Increased Body-Mass-Index (BMI) has been associated with brain atrophy in both gray and white matter structures. However, little is known concerning the integrity of white matter tracts in obesity. The purpose of the study was to evaluate the pattern of changes in white matter microstructure in human adiposity. MATERIAL AND METHODS: The study included 268 participants (52 obese, 96 overweight and 120 normal-weight) that were retrospectively evaluated by Diffusion Tensor Imaging. The fractional anisotropy, axial, radial and mean diffusivity values were compared between the above groups using Tract Based Spatial Statistics. RESULTS: The analysis revealed that the increased BMI was related with decreased fractional anisotropy in several white matter regions including the anterior and posterior thalamic radiation, the inferior fronto-occipital fasciculus, the inferior and superior longitudinal fasciculus, the corpus callosum (callosal body and forceps minor), the uncinate fasciculus, the internal capsule, the corticospinal tract and the cingulum (cingulate gyrus and hippocampus). CONCLUSIONS: Anisotropic diffusion of anatomic regions governing important brain circuits such as reward seeking inhibition, motivation/drive and learning/conditioning decreases with increasing BMI. Copyright Â
Authors: Owen A Williams; Yang An; Lori Beason-Held; Yuankai Huo; Luigi Ferrucci; Bennett A Landman; Susan M Resnick Journal: Neuroimage Date: 2018-12-15 Impact factor: 6.556
Authors: M I Argyropoulou; L G Astrakas; V G Xydis; A Drougia; V Mouka; I Goel; V Giapros; S Andronikou Journal: AJNR Am J Neuroradiol Date: 2020-02-13 Impact factor: 3.825
Authors: Maria Ly; Cyrus A Raji; Gary Z Yu; Qing Wang; Yong Wang; Suzanne E Schindler; Hongyu An; Amjad Samara; Sarah A Eisenstein; Tamara Hershey; Gordon Smith; Samuel Klein; Jingxia Liu; Chengjie Xiong; Beau M Ances; John C Morris; Tammie L S Benzinger Journal: J Alzheimers Dis Date: 2021 Impact factor: 4.472
Authors: Farzaneh Rahmani; Qing Wang; Nicole S McKay; Sarah Keefe; Nancy Hantler; Russ Hornbeck; Yong Wang; Jason Hassenstab; Suzanne Schindler; Chengjie Xiong; John C Morris; Tammie L S Benzinger; Cyrus A Raji Journal: J Alzheimers Dis Date: 2022 Impact factor: 4.160