PMID- 36811711 OWN - NLM STAT- MEDLINE DCOM- 20240306 LR - 20240306 IS - 1433-8491 (Electronic) IS - 0940-1334 (Linking) VI - 274 IP - 2 DP - 2024 Mar TI - Top-down and bottom-up alterations of connectivity patterns of the suprachiasmatic nucleus in chronic insomnia disorder. PG - 245-254 LID - 10.1007/s00406-022-01534-1 [doi] AB - The importance of the suprachiasmatic nucleus (SCN, also called the master circadian clock) in regulating sleep and wakefulness has been confirmed by multiple animal research. However, human studies of SCN in vivo are still nascent. Recently, the development of resting-state functional magnetic resonance imaging (fMRI) has made it possible to study SCN-related connectivity changes in patients with chronic insomnia disorder (CID). Hence, this study aimed to explore whether sleep-wake circuitry (i.e., communication between the SCN and other brain regions) is disrupted in human insomnia. Forty-two patients with CID and 37 healthy controls (HCs) underwent fMRI scanning. Resting-state functional connectivity (rsFC) and Granger causality analysis (GCA) were performed to find abnormal functional and causal connectivity of the SCN in CID patients. In addition, correlation analyses were conducted to detect associations between features of disrupted connectivity and clinical symptoms. Compared to HCs, CID patients showed enhanced rsFC of the SCN-left dorsolateral prefrontal cortex (DLPFC), as well as reduced rsFC of the SCN-bilateral medial prefrontal cortex (MPFC); these altered cortical regions belong to the "top-down" circuit. Moreover, CID patients exhibited disrupted functional and causal connectivity between the SCN and the locus coeruleus (LC) and the raphe nucleus (RN); these altered subcortical regions constitute the "bottom-up" pathway. Importantly, the decreased causal connectivity from the LC-to-SCN was associated with the duration of disease in CID patients. These findings suggest that the disruption of the SCN-centered "top-down" cognitive process and "bottom-up" wake-promoting pathway may be intimately tied to the neuropathology of CID. CI - (c) 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany. FAU - Yu, Siyi AU - Yu S AD - Department of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China. cdutcmysy@gmail.com. FAU - Shen, Zhifu AU - Shen Z AD - Department of Traditional Chinese Medicine, the Affiliated Hospital of North Sichuan Medical College, Nanchong, China. AD - Department of Traditional Chinese and Western Medicine, North Sichuan Medical College, Nanchong, China. FAU - Xu, Hao AU - Xu H AD - Department of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China. FAU - Xia, Zihao AU - Xia Z AD - Department of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China. FAU - Peng, Wei AU - Peng W AD - Department of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China. FAU - Hu, Youping AU - Hu Y AD - Department of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China. FAU - Feng, Fen AU - Feng F AD - Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China. FAU - Zeng, Fang AU - Zeng F AD - Department of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China. zengfang@cdutcm.edu.cn. LA - eng GR - 82004488/National Natural Science Foundation of China/ GR - 2021YJ0176/Sichuan Province Science and Technology Support Program/ GR - 2018YJ0249/Sichuan Province Science and Technology Support Program/ PT - Journal Article DEP - 20230222 PL - Germany TA - Eur Arch Psychiatry Clin Neurosci JT - European archives of psychiatry and clinical neuroscience JID - 9103030 SB - IM MH - Animals MH - Humans MH - *Sleep Initiation and Maintenance Disorders/diagnostic imaging MH - Suprachiasmatic Nucleus MH - Brain MH - Prefrontal Cortex/pathology MH - Magnetic Resonance Imaging/methods OTO - NOTNLM OT - Causal connectivity OT - Chronic insomnia disorder OT - Functional connectivity OT - Granger causality analysis OT - Suprachiasmatic nucleus EDAT- 2023/02/23 06:00 MHDA- 2024/03/06 06:44 CRDT- 2023/02/22 15:55 PHST- 2022/07/20 00:00 [received] PHST- 2022/12/16 00:00 [accepted] PHST- 2024/03/06 06:44 [medline] PHST- 2023/02/23 06:00 [pubmed] PHST- 2023/02/22 15:55 [entrez] AID - 10.1007/s00406-022-01534-1 [pii] AID - 10.1007/s00406-022-01534-1 [doi] PST - ppublish SO - Eur Arch Psychiatry Clin Neurosci. 2024 Mar;274(2):245-254. doi: 10.1007/s00406-022-01534-1. Epub 2023 Feb 22.