Dataset Information

Functional disruption in prefrontal-striatal network in obsessive-compulsive disorder.

ABSTRACT: Obsessive-compulsive disorder (OCD) is characterized by intrusive thoughts and repetitive, compulsive behaviors. While a cortico-striatal-limbic network has been implicated in the pathophysiology of OCD, the neural correlates of this network in OCD are not well understood. In this study, we examined resting state functional connectivity among regions within the cortico-striatal-limbic OCD neural network, including the rostral anterior cingulate cortex, dorsolateral prefrontal cortex, ventrolateral prefrontal cortex, orbitofrontal cortex, ventromedial prefrontal cortex, amygdala, thalamus and caudate, in 44 OCD and 43 healthy participants. We then examined relationships between OCD neural network connectivity and OCD symptom severity in OCD participants. OCD relative to healthy participants showed significantly greater connectivity between the left caudate and bilateral dorsolateral prefrontal cortex. We also found a positive correlation between left caudate-bilateral dorsolateral prefrontal cortex connectivity and depression scores in OCD participants, such that greater positive connectivity was associated with more severe symptoms. This study makes a significant contribution to our understanding of functional networks and their relationship with depression in OCD.

SUBMITTER: Sha Z

PROVIDER: S-EPMC7266720 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

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Functional disruption in prefrontal-striatal network in obsessive-compulsive disorder.

Sha Zhiqiang Z Versace Amelia A Edmiston E Kale EK Fournier Jay J Graur Simona S Greenberg Tsafrir T Santos João Paulo Lima JPL Chase Henry W HW Stiffler Richelle S RS Bonar Lisa L Hudak Robert R Yendiki Anastasia A Greenberg Benjamin D BD Rasmussen Steven S Liu Hesheng H Quirk Gregory G Haber Suzanne S Phillips Mary L ML

Psychiatry research. Neuroimaging 20200422

Obsessive-compulsive disorder (OCD) is characterized by intrusive thoughts and repetitive, compulsive behaviors. While a cortico-striatal-limbic network has been implicated in the pathophysiology of OCD, the neural correlates of this network in OCD are not well understood. In this study, we examined resting state functional connectivity among regions within the cortico-striatal-limbic OCD neural network, including the rostral anterior cingulate cortex, dorsolateral prefrontal cortex, ventrolater ...[more]

PMID: 32344156

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Project description:BackgroundAs a crucial node of the cortico-striato-thalamo-cortical (CSTC) loop, the striatum has long been considered to be involved in the pathophysiology of obsessive-compulsive disorder (OCD). Numerous neuroimaging studies have reported functional abnormalities of the striatum in OCD. However, altered dynamic functional connectivity (DFC) patterns of striatal subregions were rarely reported in patients with OCD.MethodsWe collected resting-state functional MRI data from 97 first episode and drug-naïve OCD patients and 106 HCs matched for gender and age. Seed-based whole-brain resting-state functional connectivity (RSFC) and DFC analysis were performed for 12 striatal subregions. Between-group differences of the mean RSFC and DFC were determined using a two-sample t-test. In addition, we performed a Spearman's correlation analysis to examine the relationship between altered RSFC and DFC and the clinical characteristics of OCD.ResultsPatients with OCD exhibited increased RSFC between the superior ventral striatum (VSs) and the calcarine (CAL), lingual gyrus (LING), cuneus (CUN), supplementary motor area (SMA), precuneus (PCUN), paracentral lobule (PCL) and superior parietal gyrus (SPG). Increased RSFC between the left dorsal caudal putamen (DCP) and LING and inferior occipital gyrus (IOG) and increased RSFC between left ventral rostral putamen (VRP) and fusiform gyrus (FFG) were also found. in OCD group. The left dorsal caudate (DC) showed increased RSFC with CAL. In addition, OCD patients shows increased RSFC between multiple striatal seeds and cerebellum. The left VSs showed decreased DFC in the OCD patients with the PCUN, SPG and superior occipital gyrus (SOG). The right DC showed decreased DFC with the medial frontal gyrus orbital part (ORBmed), superior frontal gyrus orbital part (ORBsup) and gyrus rectus (REC). OCD severity was associated with DFC values between the right DC and ORBmed (r = 0.209, p = 0.044).ConclusionOur study reveals disrupted RSFC and DFC between the striatal subregions and widespread brain regions in OCD patients. The findings highlight the role of the striatum in the neuropathology of OCD at a refined anatomical level and support the CSTC model in OCD.

Dataset Information

Functional disruption in prefrontal-striatal network in obsessive-compulsive disorder.

Publications

Functional disruption in prefrontal-striatal network in obsessive-compulsive disorder.

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