Altered Cellular White Matter But Not Extracellular Free Water on Diffusion MRI in Individuals at Clinical High Risk

Yingying Tang1, Ofer Pasternak1, Marek Kubicki1

  • 1Shanghai Key Laboratory of Psychotic Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China (Tang, Zhang, Junjie Wang, Xu, Qian, Jijun Wang); the Psychiatry Neuroimaging Laboratory, Department of Psychiatry, Brigham and Women's Hospital, Harvard Medical School, Boston (Tang, Pasternak, Kubicki, Rathi, Zhang, Zhu, Shenton); the Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston (Pasternak, Kubicki, Rathi, Shenton); the Institute of Mental Health, Suzhou Psychiatric Hospital, Affiliated Guangji Hospital of Soochow University, Suzhou, Jiangsu, China (Junjie Wang); the Department of Psychology, Florida A&M University, Tallahassee (Li); the Massachusetts Mental Health Center, Public Psychiatry Division, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston (Woodberry, Keshavan, Stone, Seidman); the McGovern Institute for Brain Research and the Poitras Center for Affective Disorders Research, Massachusetts Institute of Technology, Cambridge (Whitfield-Gabrieli); the Department of Psychiatry (Niznikiewicz, McCarley) and Research and Development (Shenton), Veterans Affairs Boston Healthcare System, Brockton Division, Brockton, Mass.; the Institute of Psychology and Behavioral Science, Shanghai Jiao Tong University, Shanghai, China (Jijun Wang); the CAS Center for Excellence in Brain Science and Intelligence Technology (CEBSIT), Chinese Academy of Science, China (Jijun Wang); the Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston (Seidman).

Summary

Early brain cellular changes, not extracellular ones, were found in individuals at clinical high risk for psychosis. These cellular alterations correlate with declining daily functioning, suggesting a potential predisposition before psychosis onset.

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