Affiliation:
1. Departments of Internal Medicine, Busan, South Korea
2. Neurology, Haeundae Paik Hospital, Inje University College of Medicine, Busan, South Korea.
Abstract
We investigated the changes in structural connectivity (using diffusion tensor imaging [DTI]) and the structural covariance network based on structural volume using graph theory in patients with neurofibromatosis type 1 (NF1) compared to a healthy control group. We included 14 patients with NF1, according to international consensus recommendations, and 16 healthy individuals formed the control group. This was retrospectively observational study followed STROBE guideline. Both groups underwent brain magnetic resonance imaging including DTI and 3-dimensional T1-weighted imaging. We analyzed structural connectivity using DTI and Diffusion Spectrum Imaging Studio software and evaluated the structural covariance network based on the structural volumes using FreeSurfer and Brain Analysis Using Graph Theory software. There were no differences in the global structural connectivity between the 2 groups, but several brain regions showed significant differences in local structural connectivity. Additionally, there were differences between the global structural covariance networks. The characteristic path length was longer and the small-worldness index was lower in patients with NF1. Furthermore, several regions showed significant differences in the local structural covariance networks. We observed changes in structural connectivity and covariance networks in patients with NF1 compared to a healthy control group. We found that global structural efficiency is decreased in the brains of patients with NF1, and widespread changes in the local structural network were found. These results suggest that NF1 is a brain network disease, and our study provides direction for further research to elucidate the biological processes of NF1.
Publisher
Ovid Technologies (Wolters Kluwer Health)
Reference35 articles.
1. Brain structure and function in neurofibromatosis type 1: current concepts and future directions.;Payne;J Neurol Neurosurg Psychiatry,2010
2. Behavioral phenotype of neurofibromatosis, type 1.;Kayl;Ment Retard Dev Disabil Res Rev,2000
3. Clinical disorders of brain plasticity.;Johnston;Brain Dev,2004
4. The nature and frequency of cognitive deficits in children with neurofibromatosis type 1.;Hyman;Neurology,2005
5. Learning disabilities in children with neurofibromatosis type 1: subtypes, cognitive profile, and attention-deficit-hyperactivity disorder.;Hyman;Dev Med Child Neurol,2006