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Zhuo Z, Duan Y, Tian D, Wang X, Gao C, Ding J, Zheng F, Zhang T, Zhang X, Barkhof F, Shi FD, Liu Y. Brain structural and functional alterations in MOG antibody disease. Mult Scler 2020; 27:1350-1363. [PMID: 33054621 DOI: 10.1177/1352458520964415] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND The impact of myelin oligodendrocyte glycoprotein antibody disease (MOGAD) on brain structure and function is unknown. OBJECTIVES The aim of this study was to study the multimodal brain MRI alterations in MOGAD and to investigate their clinical significance. METHODS A total of 17 MOGAD, 20 aquaporin-4 antibody seropositive neuromyelitis optica spectrum disorders (AQP4 + NMOSD), and 28 healthy controls (HC) were prospectively recruited. Voxel-wise gray matter (GM) volume, fractional anisotropy (FA), mean diffusivity (MD), and degree centrality (DC) were compared between groups. Clinical associations and differential diagnosis were determined using partial correlation and stepwise logistic regression. RESULTS In comparison with HC, MOGAD had GM atrophy in frontal and temporal lobe, insula, thalamus, and hippocampus, and WM fiber disruption in optic radiation and anterior/posterior corona radiata; DC decreased in cerebellum and increased in temporal lobe. Compared to AQP4 + NMOSD, MOGAD presented lower GM volume in postcentral gyrus and decreased DC in cerebellum. Hippocampus/parahippocampus atrophy associated with Expanded Disability Status Scale (R = -0.55, p = 0.04) and California Verbal Learning Test (R = 0.62, p = 0.031). The differentiation of MOGAD from AQP4 + NMOSD achieved an accuracy of 95% using FA in splenium of corpus callosum and DC in occipital gyrus. CONCLUSION Distinct structural and functional alterations were identified in MOGAD. Hippocampus/parahippocampus atrophy associated with clinical disability and cognitive impairment.
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Affiliation(s)
- Zhizheng Zhuo
- Department of Radiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, P.R. China/Tiantan Image Research Center, China National Clinical Research Center for Neurological Diseases, Beijing, P.R. China
| | - Yunyun Duan
- Department of Radiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, P.R. China/Tiantan Image Research Center, China National Clinical Research Center for Neurological Diseases, Beijing, P.R. China
| | - Decai Tian
- Center for Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, P.R. China/China National Clinical Research Center for Neurological Diseases, Beijing, P.R. China/Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, P.R. China
| | - Xinli Wang
- Department of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, P.R. China
| | - Chenyang Gao
- Center for Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, P.R. China
| | - Jinli Ding
- Department of Radiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, P.R. China
| | - Fenglian Zheng
- Department of Radiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, P.R. China
| | - Tian Zhang
- Department of Radiology, Beijing Bo'ai Hospital, China Rehabilitation Research Center, Beijing, P.R. China
| | - Xinghu Zhang
- Center for Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, P.R. China
| | - Frederik Barkhof
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Center, Amsterdam, The Netherlands/Queen Square Institute of Neurology and Center for Medical Image Computing, University College London, London, UK
| | - Fu-Dong Shi
- Center for Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, P.R. China/China National Clinical Research Center for Neurological Diseases, Beijing, P.R. China/Department of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, P.R. China
| | - Yaou Liu
- Department of Radiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, P.R. China/Tiantan Image Research Center, China National Clinical Research Center for Neurological Diseases, Beijing, P.R. China
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Nguyen VT, Bhalla R, Cowin G, Stimson DHR, Song X, Chong S, Jackson A, Trigg WJ, Tieng QM, Mardon K, Galloway GJ, Kurniawan ND. GABA a receptor density alterations revealed in a mouse model of early moderate prenatal ethanol exposure using [ 18F]AH114726. Nucl Med Biol 2020; 88-89:44-51. [PMID: 32777548 DOI: 10.1016/j.nucmedbio.2020.07.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 07/12/2020] [Accepted: 07/21/2020] [Indexed: 10/23/2022]
Abstract
INTRODUCTION Prenatal ethanol exposure (PEE) has been shown to alter the level and function of receptors in the brain, one of which is GABAa receptors (GABAaR), the major inhibitory ligand gated ion channels that mediate neuronal inhibition. High dose PEE in animals resulted in the upregulation of GABAaR, but the effects of low and moderate dose PEE at early gestation have not been investigated. This study aimed at examining GABAaR density in the adult mouse brain following PEE during a period equivalent to the first 3 to 4 weeks in human gestation. It was hypothesized that early moderate PEE would cause alterations in brain GABAaR levels in the adult offspring. METHODS C57BL/6J mice were given 10% v/v ethanol during the first 8 gestational days. Male offspring were studied using in-vivo Positron Emission Tomography (PET)/Magnetic Resonance Imaging (MRI), biodistribution, in-vitro autoradiography using [18F]AH114726, a novel flumazenil analogue with a high affinity for the benzodiazepine-binding site, and validated using immunohistochemistry. RESULTS In vivo PET and biodistribution did not detect alteration in brain tracer uptake. In vitro radiotracer studies detected significantly reduced GABAaR in the olfactory bulbs. Immunohistochemistry detected reduced GABAaR in the cerebral cortex, cerebellum and hippocampus, while Nissl staining showed that cell density was significantly higher in the striatum following PEE. CONCLUSION Early moderate PEE may induce long-term alterations in the GABAaR system that persisted into adulthood.
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Affiliation(s)
- Van T Nguyen
- Centre for Advanced Imaging, University of Queensland, Brisbane, Queensland, Australia; Hanoi University of Science and Technology, Hanoi, Viet Nam
| | - Rajiv Bhalla
- Centre for Advanced Imaging, University of Queensland, Brisbane, Queensland, Australia
| | - Gary Cowin
- Centre for Advanced Imaging, University of Queensland, Brisbane, Queensland, Australia
| | - Damion H R Stimson
- Centre for Advanced Imaging, University of Queensland, Brisbane, Queensland, Australia
| | - Xin Song
- Centre for Advanced Imaging, University of Queensland, Brisbane, Queensland, Australia
| | - Suyinn Chong
- Mater Research Institute, University of Queensland, Brisbane, Queensland, Australia; Translational Research Institute, Brisbane, Queensland, Australia
| | - Alexander Jackson
- Core Imaging R&D, Life Sciences, GE Healthcare, Chalfont St Giles, Buckinghamshire, UK
| | - William J Trigg
- Core Imaging R&D, Life Sciences, GE Healthcare, Chalfont St Giles, Buckinghamshire, UK
| | - Quang M Tieng
- Centre for Advanced Imaging, University of Queensland, Brisbane, Queensland, Australia
| | - Karine Mardon
- Centre for Advanced Imaging, University of Queensland, Brisbane, Queensland, Australia; National Imaging Facility, University of Queensland, Brisbane, Queensland, Australia
| | - Graham J Galloway
- Centre for Advanced Imaging, University of Queensland, Brisbane, Queensland, Australia; Translational Research Institute, Brisbane, Queensland, Australia; National Imaging Facility, University of Queensland, Brisbane, Queensland, Australia
| | - Nyoman D Kurniawan
- Centre for Advanced Imaging, University of Queensland, Brisbane, Queensland, Australia.
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