Comprehensive investigations of cerebral hemodynamic responses in CSVD patients with mental disorders: a pilot study

Frontiers in Psychiatry

Psychiatry

Dan Wen¹  Yong Xu² 

[1] Department of Psychiatry, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China;Shanxi Key Laboratory of Artificial Intelligence Assisted Diagnosis and Treatment for Mental Disorder, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China;Department of Psychiatry, Shanxi Medical University, Taiyuan, Shanxi, China;Department of Psychiatry, Shanxi Medical University, Taiyuan, Shanxi, China;

关键词: cerebral small vessel disease (CSVD);    mental disorders;    blood oxygenation;    cerebral blood flow;    functional near-infrared diffuse optical spectroscopy (fNIRS);    diffuse correlation spectroscopy (DCS);    vascular responses;   

DOI  :  10.3389/fpsyt.2023.1229436

 received in 2023-05-26, accepted in 2023-08-25,  发布年份 2023

来源: Frontiers

【 摘 要 】

Although a portion of patients with cerebral small vessel disease (CSVD) present mental disorders, there is currently a lack of appropriate technologies to evaluate brain functions that are relevant to neurovascular coupling. Furthermore, there are no established objective criteria for diagnosing and distinguishing CSVD-induced mental disorders and psychiatric diseases. In this study, we report the first comprehensive investigation of the cerebral hemodynamics of CSVD patients who also presented with mental disorders. Two CSVD patients with similar magnetic resonance imaging (MRI) outcomes but with non-identical mental symptoms participated in this study. The patients were instructed to perform the verbal fluency task (VFT), high-level cognition task (HCT), as well as voluntary breath holding (VBH). A functional near-infrared spectroscopy (fNIRS) was used to measure the cerebral oxygenation responses. Additionally, a diffuse correlation spectroscopy (DCS) was used to measure the cerebral blood flow (CBF) responses. Both technologies were also applied to a healthy subject for comparison. The fNIRS results showed that both CSVD patients presented abnormal cerebral oxygenation responses during the VFT, HCT, and VBH tasks. Moreover, the patient with cognition impairment showed fluctuations in CBF during these tasks. In contrast, the patient without cognition impairment mostly presented typical CBF responses during the tasks, which was consistent with the healthy subject. The cognitive impairment in CSVD patients may be due to the decoupling of the neurons from the cerebrovascular, subsequently affecting the autoregulation capacity. The results of the fNIRS and DCS combined provide a comprehensive evaluation of the neurovascular coupling and, hence, offer great potential in diagnosing cerebrovascular or psychiatric diseases.

【 授权许可】

Unknown   
Copyright © 2023 Wen and Xu.