PMID- 31006380 OWN - NLM STAT- MEDLINE DCOM- 20191212 LR - 20200225 IS - 1473-2300 (Electronic) IS - 0300-0605 (Print) IS - 0300-0605 (Linking) VI - 47 IP - 6 DP - 2019 Jun TI - Aberrant functional connectivity density in patients with treatment-refractory obsessive-compulsive disorder: a pilot study. PG - 2434-2445 LID - 10.1177/0300060518807058 [doi] AB - OBJECTIVE: Functional connectivity (FC) is altered in patients with obsessive-compulsive disorder (OCD). Most previous studies have focused on the strength of FC in patients with OCD; few have examined the number of functional connections in these patients. The number of functional connections is an important index for assessing aberrant FC. In the present study, we used FC density (FCD) mapping to explore alterations in the number of functional connections in patients with treatment-refractory OCD (TROCD) using the FCD index. METHODS: Twenty patients with TROCD and 20 patients with OCD in clinical remission were enrolled in the study. Global FCD (gFCD) was adopted to compare the differences between the two groups of patients. RESULTS: The gFCD in the left middle temporal gyrus was lower in the patients with TROCD than in those with remitted OCD, suggesting that decreased information processing ability may play a significant role in TROCD. CONCLUSION: The left middle temporal gyrus is a key component of the emotional processing circuit and attentional processing circuit. Decreased information processing ability in this brain region may play a significant role in TROCD; however, further well-designed follow-up studies are needed to support this hypothesis. FAU - Shan, Pei Wei AU - Shan PW AD - 1 Department of Psychiatry, Wenzhou Seventh People's Hospital, Wenzhou, Zhejiang Province, China. FAU - Liu, Wei AU - Liu W AD - 2 Department of Psychiatry, The First Affiliated Hospital of Harbin Medical University, Harbin City, Heilongjiang Province, China. FAU - Liu, Caixing AU - Liu C AD - 3 Department of Psychiatry, Qingdao Mental Health Center, Shandong Province, China. FAU - Han, Yunyi AU - Han Y AD - 1 Department of Psychiatry, Wenzhou Seventh People's Hospital, Wenzhou, Zhejiang Province, China. FAU - Wang, Lina AU - Wang L AD - 4 Department of Psychiatry, Tianjin Anding Hospital, Tianjin Mental Health Center, Tianjin City 300300, China. FAU - Chen, Qinggang AU - Chen Q AD - 4 Department of Psychiatry, Tianjin Anding Hospital, Tianjin Mental Health Center, Tianjin City 300300, China. FAU - Tian, Hongjun AU - Tian H AD - 4 Department of Psychiatry, Tianjin Anding Hospital, Tianjin Mental Health Center, Tianjin City 300300, China. FAU - Sun, Xiuhai AU - Sun X AD - 5 Department of Neurology, Zoucheng People's Hospital, Jining Medical University Affiliated to Zoucheng Hospital, Shandong Province, China. FAU - Luan, Shuxin AU - Luan S AD - 6 Department of Psychiatry, Jilin University, Jinlin Province, China. FAU - Lin, Xiaodong AU - Lin X AD - 1 Department of Psychiatry, Wenzhou Seventh People's Hospital, Wenzhou, Zhejiang Province, China. FAU - Jiang, Deguo AU - Jiang D AD - 1 Department of Psychiatry, Wenzhou Seventh People's Hospital, Wenzhou, Zhejiang Province, China. FAU - Zhuo, Chuanjun AU - Zhuo C AD - 1 Department of Psychiatry, Wenzhou Seventh People's Hospital, Wenzhou, Zhejiang Province, China. AD - 4 Department of Psychiatry, Tianjin Anding Hospital, Tianjin Mental Health Center, Tianjin City 300300, China. LA - eng PT - Journal Article DEP - 20190421 PL - England TA - J Int Med Res JT - The Journal of international medical research JID - 0346411 SB - IM MH - Adult MH - Brain/*physiopathology MH - Brain Mapping/*methods MH - Case-Control Studies MH - Female MH - Follow-Up Studies MH - Frontal Lobe/physiopathology MH - Humans MH - Image Processing, Computer-Assisted/*methods MH - Magnetic Resonance Imaging/*methods MH - Male MH - Obsessive-Compulsive Disorder/classification/*etiology/metabolism/*pathology MH - Pilot Projects MH - Prefrontal Cortex/physiopathology MH - Prognosis PMC - PMC6567710 OTO - NOTNLM OT - Treatment-refractory obsessive-compulsive disorder OT - aberrant functional connectivity OT - functional connection number OT - functional connectivity density OT - information processing OT - left middle temporal gyrus EDAT- 2019/04/23 06:00 MHDA- 2019/12/18 06:00 PMCR- 2019/06/01 CRDT- 2019/04/23 06:00 PHST- 2019/04/23 06:00 [pubmed] PHST- 2019/12/18 06:00 [medline] PHST- 2019/04/23 06:00 [entrez] PHST- 2019/06/01 00:00 [pmc-release] AID - 10.1177_0300060518807058 [pii] AID - 10.1177/0300060518807058 [doi] PST - ppublish SO - J Int Med Res. 2019 Jun;47(6):2434-2445. doi: 10.1177/0300060518807058. Epub 2019 Apr 21.