Clinical Study of Cerebral Ischemia in Moyamoya Disease from the View of Development of the Anterior Choroidal Artery |
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| Institution: | 1. Division of Neurology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan;2. Division of Diabetes and Metabolic Diseases, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan;3. Department of Neurological Surgery, Nihon University School of Medicine, Tokyo, Japan;1. Department of Neurology, Division of Cerebrovascular Diseases, University of Iowa, Iowa City, Iowa, USA;2. Department of Internal Medicine, Division of Hematology/Oncology, University of Iowa, Iowa City, Iowa, USA.;3. Department of Neurosurgery, University of Iowa, Iowa City, Iowa, USA;4. Department of Epidemiology, University of Iowa, Iowa City, Iowa, USA;1. Department of Neurology, Boston University School of Medicine, Boston, MA, United States;2. Department of Biostatistics, Boston University School of Public Health, Boston, MA, United States;3. Departments of Neurosurgery and Medicine (Infectious Disease), Boston University School of Medicine, Boston, MA and Boston Medical Center, Boston, MA, United States;1. Stroke Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona (Department of Medicine), C/Sant Antoni Maria Claret 167, 08025, Barcelona, Spain.;2. Cerebrovascular Diseases, Biomedical Research Institute Sant Pau (IIB-Sant Pau), C/Sant Quintí 77, 08041, Barcelona Spain.;3. Facility of Cytometry, Biomedical Research Institute Sant Pau (IIB-Sant Pau), C/Sant Quintí 77, 08041, Barcelona, Spain |
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| Abstract: | ObjectivesThe anterior choroidal artery (AchA) is one of the collateral vessels in moyamoya disease (MMD). The incidence of cerebral ischemia in MMD was analyzed through the association between development of the AchA and advancement of MMD stage.Materials and MethodsTwelve patients of MMD with cerebral ischemia (infarction; 9 patients, transient ischemic attack; 3 patients) were enrolled. Advancement of MMD was evaluated using Suzuki's stage. The grades in Suzuki's stage were subclassified into a non-progressive stage for grades 1 and 2, and a progressive stage for grades 4 and 5. Dilatation of the AchA was judged as the presence of development of this artery. Development of the AchA was grouped into proximal type and proximal and distal type.ResultsMost frequent locations of infarcts were the anterior and parietal lobes in 6 patients each. Development of the AchA was confirmed on the ischemic side in all patients and on the non-ischemic side in 9 patients. Development of the AchA in the progressive stage was limited in the proximal and distal type on both sides. Development of the AchA in the non-progressive stage was the proximal type on the ischemic side.ConclusionsThe cause of cerebral ischemia was possibly associated with inadequate blood supply of the AchA in the non-progressive stage, and the lower blood flow from the internal carotid artery (ICA) in the progressive stage. Disparity between collateral blood flow from the AchA and the blood flow from the ICA was considered to relate to incidence of cerebral ischemia in MMD. |
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