Changes in the amplitude of low-frequency fluctuations in specific frequency bands in major depressive disorder after electroconvulsive therapy

作者全名："Li, Xin-Ke; Qiu, Hai-Tang; Hu, Jia; Luo, Qing-Hua"

作者地址："[Li, Xin-Ke] Chongqing Med Univ, Coll Med Informat, 1 Med Sch Rd, Chongqing 400016, Peoples R China; [Qiu, Hai-Tang; Luo, Qing-Hua] Chongqing Med Univ, First Affiliated Hosp Chongqing Med Univ, Mental Hlth Ctr, Chongqing 400016, Peoples R China; [Hu, Jia] Chongqing Univ, Inst Adv Studies Humanities & Social Sci, Chongqing 400044, Peoples R China"

通信作者："Li, XK (通讯作者)，Chongqing Med Univ, Coll Med Informat, 1 Med Sch Rd, Chongqing 400016, Peoples R China."

来源：WORLD JOURNAL OF PSYCHIATRY

ESI学科分类：PSYCHIATRY/PSYCHOLOGY

WOS号：WOS:000806036000006

JCR分区：Q3

影响因子：3.1

年份：2022

卷号：12

期号：5

开始页：708

结束页：721

文献类型：Article

关键词：Electroconvulsive therapy; Resting-state functional magnetic resonance imaging; Major depressive disorder; Amplitude of low-frequency fluctuations; Specific frequency bands

摘要："BACKGROUND Major depressive disorder (MDD) tends to have a high incidence and high suicide risk. Electroconvulsive therapy (ECT) is currently a relatively effective treatment for MDD. However, the mechanism of efficacy of ECT is still unclear. AIM To investigate the changes in the amplitude of low-frequency fluctuations in specific frequency bands in patients with MDD after ECT. METHODS Twenty-two MDD patients and fifteen healthy controls (HCs) were recruited to this study. MDD patients received 8 ECT sessions with bitemporal placement. Resting-state functional magnetic resonance imaging was adopted to examine regional cerebellar blood flow in both the MDD patients and HCs. The MDD patients were scanned twice (before the first ECT session and after the eighth ECT session) to acquire data. Then, the amplitude of low-frequency fluctuations (ALFF) was computed to characterize the intrinsic neural oscillations in different bands (typical frequency, slow-5, and slow-4 bands). RESULTS Compared to before ECT (pre-ECT), we found that MDD patients after the eighth ECT (post-ECT) session had a higher ALFF in the typical band in the right middle frontal gyrus, posterior cingulate, right supramarginal gyrus, left superior frontal gyrus, and left angular gyrus. There was a lower ALFF in the right superior temporal gyrus. Compared to pre-ECT values, the ALFF in the slow-5 band was significantly increased in the right limbic lobe, cerebellum posterior lobe, right middle orbitofrontal gyrus, and frontal lobe in post-ECT patients, whereas the ALFF in the slow-5 band in the left sublobar region, right angular gyrus, and right frontal lobe was lower. In contrast, significantly higher ALFF in the slow-4 band was observed in the frontal lobe, superior frontal gyrus, parietal lobe, right inferior parietal lobule, and left angular gyrus. CONCLUSION Our results suggest that the abnormal ALFF in pre- and post-ECT MDD patients may be associated with specific frequency bands."

基金机构：Natural Science Foundation of China [81901373]; Intelligent Medicine Research Project of Chongqing Medical University [ZHYX202126]

基金资助正文："Supported by the Natural Science Foundation of China, No. 81901373; and the Intelligent Medicine Research Project of Chongqing Medical University, No. ZHYX202126."