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https://www.readbyqxmd.com/read/28872637/mechanisms-of-cognitive-behavioral-therapy-for-obsessive-compulsive-disorder-involve-robust-and-extensive-increases-in-brain-network-connectivity
#1
T D Moody, F Morfini, G Cheng, C Sheen, R Tadayonnejad, N Reggente, J O'Neill, J D Feusner
Cognitive-behavioral therapy (CBT) is effective for obsessive compulsive disorder (OCD); however, little is understood about its mechanisms related to brain network connectivity. We examined connectivity changes from resting-state functional magnetic resonance imaging data pre-to-post-CBT in 43 OCD participants, randomized to receive either 4 weeks of intensive CBT or 4 weeks waitlist followed by 4 weeks of CBT, and 24 healthy controls before and after 4 weeks of no treatment. Network-based-statistic analysis revealed large-magnitude increases in OCD connectivity in eight networks...
September 5, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28741401/trans-diagnostic-comparison-of-response-inhibition-in-tourette-s-disorder-and-obsessive-compulsive-disorder
#2
Siyan Fan, Danielle C Cath, Ysbrand D van der Werf, Stella de Wit, Dick J Veltman, Odile A van den Heuvel
OBJECTIVES: Impaired response inhibition is related to neurodevelopmental disorders, such as Tourette's disorder (TD) and obsessive-compulsive disorder (OCD). Unlike OCD, in which neural correlates of response inhibition have been extensively studied, TD literature is limited. By using a Stop-Signal task, we investigated the neural mechanisms underlying response inhibition deficits in TD compared to OCD and healthy controls (HCs). METHODS: Twenty-three TD patients, 20 OCD patients and 22 HCs were scanned (3T MRI)...
July 25, 2017: World Journal of Biological Psychiatry
https://www.readbyqxmd.com/read/28656117/obsessive-compulsive-disorder-associated-with-posterior-cranial-fossa-meningioma
#3
Nobuyuki Takeuchi, Etushi Kato, Kousuke Kanemoto
We report here a patient in whom the effects of a cerebellum mass may have led to development of obsessive-compulsive disorder (OCD). A 33-year-old woman showed symptoms of OCD, including obsessive worry about infection from tainted blood and repetitive confirmation, which worsened during pregnancy. She had comprehension in regard to her illness and no evidence of cognitive dysfunction and did not meet other DSM-5 criteria such as depression. One month after giving childbirth, the symptoms worsened, while headache and dizziness also developed...
2017: Case Reports in Psychiatry
https://www.readbyqxmd.com/read/28482427/-correlation-between-the-clinical-symptoms-and-the-activation-pattern-of-brain-neurons-in-patients-with-obsessive-compulsive-disorder
#4
Q H Niu, J L Cheng, X Q Song, L Yang, C Y Chu, H Liu, L F Zhang, Y Li, Y H Li
Objective: To explore the correlation between clinical symptoms of patients with obsessive-compulsive disorder (OCD) and the activation pattern of brain neurons at resting. Methods: A total of 26 patients diagnosed with fist-episode OCD were selected and underwent functional magnetic resonance imaging (fMRI) scanning at resting state. The fMRI data were processed by statistical parametric mapping (SPM8), Data Processing Assistant for Resting-State fMRI Analysis Toolkit (DPARSFA), and Resting State fMRI Data Analysis Toolkit (REST) software...
May 9, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28442404/meta-analytic-investigations-of-common-and-distinct-grey-matter-alterations-in-youths-and-adults-with-obsessive-compulsive-disorder
#5
REVIEW
Xinyu Hu, Mingying Du, Lizhou Chen, Lei Li, Ming Zhou, Lianqing Zhang, Qi Liu, Lu Lu, Kunal Mreedha, Xiaoqi Huang, Qiyong Gong
Obsessive-compulsive disorder (OCD) is a disabling illness with onset generally in childhood. OCD-youths differ from OCD-adults with regard to gender distribution, comorbidity patterns and treatment options. However, little is known about the neural correlate differences underpin those two populations. The current meta-analysis summarizes voxel based morphometry findings to elucidate whether differences of neural correlates exist between these two populations. Both OCD-youths and OCD-adults demonstrated greater striatal volume and smaller prefrontal grey matter volume (GMV)...
April 23, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28436342/comparison-of-neural-substrates-of-temporal-discounting-between-youth-with-autism-spectrum-disorder-and-with-obsessive-compulsive-disorder
#6
C O Carlisi, L Norman, C M Murphy, A Christakou, K Chantiluke, V Giampietro, A Simmons, M Brammer, D G Murphy, D Mataix-Cols, K Rubia
BACKGROUND: Autism spectrum disorder (ASD) and obsessive-compulsive disorder (OCD) share abnormalities in hot executive functions such as reward-based decision-making, as measured in the temporal discounting task (TD). No studies, however, have directly compared these disorders to investigate common/distinct neural profiles underlying such abnormalities. We wanted to test whether reward-based decision-making is a shared transdiagnostic feature of both disorders with similar neurofunctional substrates or whether it is a shared phenotype with disorder-differential neurofunctional underpinnings...
April 24, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28287615/patterns-of-default-mode-network-deactivation-in-obsessive-compulsive-disorder
#7
Óscar F Gonçalves, José Miguel Soares, Sandra Carvalho, Jorge Leite, Ana Ganho-Ávila, Ana Fernandes-Gonçalves, Fernando Pocinho, Angel Carracedo, Adriana Sampaio
The objective of the present study was to research the patterns of Default Mode Network (DMN) deactivation in Obsessive Compulsive Disorder (OCD) in the transition between a resting and a non-rest emotional condition. Twenty-seven participants, 15 diagnosed with OCD and 12 healthy controls (HC), underwent a functional neuroimaging paradigm in which DMN brain activation in a resting condition was contrasted with activity during a non-rest condition consisting in the presentation of emotionally pleasant and unpleasant images...
March 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28104431/abnormal-regional-spontaneous-neuronal-activity-associated-with-symptom-severity-in-treatment-naive-patients-with-obsessive-compulsive-disorder-revealed-by-resting-state-functional-mri
#8
Linlin Qiu, Xiangshuai Fu, Shuai Wang, Qunfeng Tang, Xingui Chen, Lin Cheng, Fuquan Zhang, Zhenhe Zhou, Lin Tian
A large number of neuroimaging studies have revealed the dysfunction of brain activities in obsessive-compulsive disorder (OCD) during various tasks. However, regional spontaneous activity abnormalities in OCD are gradually being revealed. In this current study, we aimed to investigate cerebral regions with abnormal spontaneous activity using resting-state functional magnetic resonance imaging (fMRI) and further explored the relationship between the spontaneous neuronal activity and symptom severity of patients with OCD...
January 16, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/27995068/shared-white-matter-alterations-across-emotional-disorders-a-voxel-based-meta-analysis-of-fractional-anisotropy
#9
Lisanne Michelle Jenkins, Alyssa Barba, Miranda Campbell, Melissa Lamar, Stewart A Shankman, Alex D Leow, Olusola Ajilore, Scott Aaron Langenecker
BACKGROUND: White matter (WM) integrity may represent a shared biomarker for emotional disorders (ED). Aims: To identify transdiagnostic biomarkers of reduced WM by meta-analysis of findings across multiple EDs. METHOD: Web of Science was searched systematically for studies of whole brain analysis of fractional anisotropy (FA) in adults with major depressive disorder, bipolar disorder, social anxiety disorder, obsessive-compulsive disorder or posttraumatic stress disorder compared with a healthy control (HC) group...
2016: NeuroImage: Clinical
https://www.readbyqxmd.com/read/27870781/neuroanatomical-assessment-of-the-impact-of-negative-emotion-on-explicit-memory-in-patients-with-obsessive-compulsive-disorder
#10
In-Soo Jang, Gwang-Won Kim, Gwang-Woo Jeong
The aim of this study was to identify the brain activation patterns associated with emotionally neutral or unpleasant words during explicit memory tasks in patients with obsessive-compulsive disorder (OCD) using a functional MRI. Sixteen patients with OCD (mean age=31.4±10.1 years) and 16 healthy controls (mean age=32.6±5.8 years) who had no history of neurological or psychiatric illness underwent functional MRI examinations on a 3-T Siemens MR Scanner. The stimulation paradigm consisted of five times rest-condition, two times encoding of two-syllable words, and two times explicit retrieval of the previously learned words...
January 1, 2017: Neuroreport
https://www.readbyqxmd.com/read/27769568/specific-frontostriatal-circuits-for-impaired-cognitive-flexibility-and-goal-directed-planning-in-obsessive-compulsive-disorder-evidence-from-resting-state-functional-connectivity
#11
Matilde M Vaghi, Petra E Vértes, Manfred G Kitzbichler, Annemieke M Apergis-Schoute, Febe E van der Flier, Naomi A Fineberg, Akeem Sule, Rashid Zaman, Valerie Voon, Prantik Kundu, Edward T Bullmore, Trevor W Robbins
BACKGROUND: A recent hypothesis has suggested that core deficits in goal-directed behavior in obsessive-compulsive disorder (OCD) are caused by impaired frontostriatal function. We tested this hypothesis in OCD patients and control subjects by relating measures of goal-directed planning and cognitive flexibility to underlying resting-state functional connectivity. METHODS: Multiecho resting-state acquisition, combined with micromovement correction by blood oxygen level-dependent sensitive independent component analysis, was used to obtain in vivo measures of functional connectivity in 44 OCD patients and 43 healthy comparison subjects...
April 15, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/27454206/cerebellar-volume-deficits-in-medication-na%C3%A3-ve-obsessive-compulsive-disorder
#12
Janardhanan C Narayanaswamy, Dania Jose, Sunil V Kalmady, Sri Mahavir Agarwal, Ganesan Venkatasubramanian, Y C Janardhan Reddy
Even though conventional neurobiological models of obsessive compulsive disorder (OCD) commonly demonstrate abnormalities involving fronto-striatal circuits, there is emerging evidence regarding the role of posterior brain structures such as cerebellum. In this study, we examined the cerebellar regional volume in a large sample of medication-naïve OCD patients compared to matched healthy controls (HC). In 49 medication naïve right handed OCD patients and 39 age and sex matched HC, sub-region wise volume of cerebellum was extracted from the T1 weighted images using Spatially Unbiased Infra tentorial Template (SUIT) toolbox and compared using hypothesis driven, region of interest approach after clinical assessment with standard scales...
August 30, 2016: Psychiatry Research
https://www.readbyqxmd.com/read/27388149/cortico-striato-thalamo-cortical-circuit-abnormalities-in-obsessive-compulsive-disorder-a-voxel-based-morphometric-and-fmri-study-of-the-whole-brain
#13
Wenxin Tang, Qifeng Zhu, Xiangyang Gong, Cheng Zhu, Yiquan Wang, Shulin Chen
The primary aim of this study was to identify structural and functional abnormalities in the brains of obsessive-compulsive disorder (OCD) patients. Another aim was to assess the effect of serotonin selective reuptake inhibitors (SSRIs) on brain structure of OCD patients. All subjects underwent brain magnetic resonance imaging (MRI) and resting functional MRI (fMRI). High-resolution three-dimensional images were processed using the voxel-based morphometry (VBM) method. The final analysis included 18 OCD patients and 16 healthy controls...
October 15, 2016: Behavioural Brain Research
https://www.readbyqxmd.com/read/26784523/brain-structural-correlates-of-obsessive-compulsive-disorder-with-and-without-preceding-stressful-life-events
#14
E Real, M Subirà, P Alonso, C Segalàs, J Labad, C Orfila, C López-Solà, I Martínez-Zalacaín, E Via, N Cardoner, S Jiménez-Murcia, C Soriano-Mas, J M Menchón
Objectives There is growing evidence supporting a role for stressful life events (SLEs) at obsessive-compulsive disorder (OCD) onset, but neurobiological correlates of such effect are not known. We evaluated regional grey matter (GM) changes associated with the presence/absence of SLEs at OCD onset. Methods One hundred and twenty-four OCD patients and 112 healthy controls were recruited. Patients were split into two groups according to the presence (n = 56) or absence (n = 68) of SLEs at disorder's onset...
August 2016: World Journal of Biological Psychiatry
https://www.readbyqxmd.com/read/26708318/multivariate-pattern-analysis-of-obsessive-compulsive-disorder-using-structural-neuroanatomy
#15
Xinyu Hu, Qi Liu, Bin Li, Wanjie Tang, Huaiqiang Sun, Fei Li, Yanchun Yang, Qiyong Gong, Xiaoqi Huang
Magnetic resonance imaging (MRI) studies have revealed brain structural abnormalities in obsessive-compulsive disorder (OCD) patients, involving both gray matter (GM) and white matter (WM). However, the results of previous publications were based on average differences between groups, which limited their usages in clinical practice. Therefore, the aim of this study was to examine whether the application of multivariate pattern analysis (MVPA) to high-dimensional structural images would allow accurate discrimination between OCD patients and healthy control subjects (HCS)...
February 2016: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/26683173/abnormal-functional-connectivity-of-brain-network-hubs-associated-with-symptom-severity-in-treatment-naive-patients-with-obsessive-compulsive-disorder-a-resting-state-functional-mri-study
#16
Lin Tian, Chun Meng, Ying Jiang, Qunfeng Tang, Shuai Wang, Xiyao Xie, Xiangshuai Fu, Chunhui Jin, Fuquan Zhang, Jidong Wang
OBJECTIVE: Abnormal brain networks have been observed in patients with obsessive-compulsive disorder (OCD). However, detailed network hub and connectivity changes remained unclear in treatment-naive patients with OCD. Here, we sought to determine whether patients show hub-related connectivity changes in their whole-brain functional networks. METHODS: We used resting-state functional magnetic resonance imaging data and voxel-based graph-theoretic analysis to investigate functional connectivity strength and hubs of whole-brain networks in 29 treatment-naive patients with OCD and 29 age- and gender-matched healthy controls...
April 3, 2016: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/26522275/increased-fractional-anisotropy-in-cerebellum-in-obsessive-compulsive-disorder
#17
Tue Hartmann, Sanne Vandborg, Raben Rosenberg, Leif Sørensen, Poul Videbech
BACKGROUND: Previous morphology and diffusion-imaging studies have suggested that structural changes in white matter is an important part of the pathophysiology of obsessive-compulsive disorder (OCD). However, different methodological approaches and the heterogeneity of patient samples question the validity of the findings. Materials and methods In total, 30 patients were matched for age and sex with 30 healthy controls. All participants underwent T1-weighted magnetic resonance imaging, diffusion tensor imaging and T2 fluid-attenuated inversion recovery...
June 2016: Acta Neuropsychiatrica
https://www.readbyqxmd.com/read/26423528/clinically-effective-ocd-treatment-prevents-5-ht1b-receptor-induced-repetitive-behavior-and-striatal-activation
#18
Emily V Ho, Summer L Thompson, William R Katzka, Mitra F Sharifi, James A Knowles, Stephanie C Dulawa
RATIONALE: Serotonin-1B receptor (5-HT1BR) agonist treatment induces obsessive-compulsive disorder (OCD)-like behaviors including locomotor stereotypy, prepulse inhibition deficits, and delayed alternation disruptions, which are selectively prevented by clinically effective OCD treatment. However, the role of 5-HT1BRs in modulating other repetitive behaviors or OCD-like patterns of brain activation remains unclear. OBJECTIVES: We assessed the effects of 5-HT1BR agonism on digging, grooming, and open field behaviors in mice...
January 2016: Psychopharmacology
https://www.readbyqxmd.com/read/26378734/regional-homogeneity-of-spontaneous-brain-activity-in-adult-patients-with-obsessive-compulsive-disorder-before-and-after-cognitive-behavioural-therapy
#19
Xiang-Yun Yang, Jing Sun, Jia Luo, Zhao-Xi Zhong, Ping Li, Shu-Min Yao, Hong-Fang Xiong, Fang-Fang Huang, Zhan-Jiang Li
BACKGROUND: Cognitive behavioural therapy (CBT) is an effective treatment for obsessive-compulsive disorder (OCD). Several neuroimaging studies have explored alterations of brain function in OCD patients as they performed tasks after CBT. However, the effects of CBT on the neural activityin OCD during rest remain unknown. Therefore, we investigated changes in regional homogeneity (ReHo) in OCD patients before and after CBT. METHODS: Twenty-two OCD patients and 22 well-matched healthy controls participated in the resting-state functional magnetic resonance imaging scans...
December 1, 2015: Journal of Affective Disorders
https://www.readbyqxmd.com/read/26347628/gray-matter-alterations-in-post-traumatic-stress-disorder-obsessive-compulsive-disorder-and-social-anxiety-disorder
#20
Bochao Cheng, Xiaoqi Huang, Shiguang Li, Xinyu Hu, Ya Luo, Xiuli Wang, Xun Yang, Changjian Qiu, Yanchun Yang, Wei Zhang, Feng Bi, Neil Roberts, Qiyong Gong
Post-traumatic stress disorder (PTSD), obsessive-compulsive disorder (OCD), and social anxiety disorder (SAD) all bear the core symptom of anxiety and are separately classified in the new DSM-5 system. The aim of the present study is to obtain evidence for neuroanatomical difference for these disorders. We applied voxel-based morphometry (VBM) with Diffeomorphic Anatomical Registration Through Exponentiated Lie to compare gray matter volume (GMV) in magnetic resonance images obtained for 30 patients with PTSD, 29 patients with OCD, 20 patients with SAD, and 30 healthy controls...
2015: Frontiers in Behavioral Neuroscience
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