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https://www.readbyqxmd.com/read/29053637/progress-in-genetic-studies-of-tourette-s-syndrome
#1
REVIEW
Yanjie Qi, Yi Zheng, Zhanjiang Li, Lan Xiong
Tourette's Syndrome (TS) is a complex disorder characterized by repetitive, sudden, and involuntary movements or vocalizations, called tics. Tics usually appear in childhood, and their severity varies over time. In addition to frequent tics, people with TS are at risk for associated problems including attention deficit hyperactivity disorder (ADHD), obsessive-compulsive disorder (OCD), anxiety, depression, and problems with sleep. TS occurs in most populations and ethnic groups worldwide, and it is more common in males than in females...
October 20, 2017: Brain Sciences
https://www.readbyqxmd.com/read/29053484/the-effect-of-low-frequency-repetitive-transcranial-magnetic-stimulation-at-orbitofrontal-cortex-in-the-treatment-of-patients-with-medication-refractory-obsessive-compulsive-disorder-a-retrospective-open-study
#2
Saurabh Kumar, Swarndeep Singh, Rakesh Kumar Chadda, Rohit Verma, Nand Kumar
OBJECTIVE: Obsessive-compulsive disorder (OCD) is a chronic debilitating psychiatric disorder, with significant proportion of patients failing to respond with current first-line treatments. The present study assesses the safety and effectiveness of low-frequency repetitive transcranial magnetic stimulation (LF-rTMS) over left-orbitofrontal cortex (Lt-OFC) as a potential augmentation strategy in treatment of patients with medication-refractory OCD in real-world clinical setting. The present report also aims to examine the factors affecting response to rTMS and the durability of effects produced by rTMS over 1 month of follow-up period...
October 19, 2017: Journal of ECT
https://www.readbyqxmd.com/read/29052999/impulsivity-and-compulsivity-in-internet-gaming-disorder-a-comparison-with-obsessive-compulsive-disorder-and-alcohol-use-disorder
#3
Yeon-Jin Kim, Jae A Lim, Ji Yoon Lee, Sohee Oh, Sung Nyun Kim, Dai Jin Kim, Jong Eun Ha, Jun Soo Kwon, Jung-Seok Choi
Background and aims Internet gaming disorder (IGD) is characterized by a loss of control and a preoccupation with Internet games leading to repetitive behavior. We aimed to compare the baseline neuropsychological profiles in IGD, alcohol use disorder (AUD), and obsessive-compulsive disorder (OCD) in the spectrum of impulsivity and compulsivity. Methods A total of 225 subjects (IGD, N = 86; AUD, N = 39; OCD, N = 23; healthy controls, N = 77) were administered traditional neuropsychological tests including Korean version of the Stroop Color-Word test and computerized neuropsychological tests, including the stop signal test (SST) and the intra-extra dimensional set shift test (IED)...
October 20, 2017: Journal of Behavioral Addictions
https://www.readbyqxmd.com/read/29052616/pregenual-anterior-cingulate-dysfunction-associated-with-depression-in-ocd-an-integrated-multimodal-fmri-1-h-mrs-study
#4
Reza Tadayonnejad, Rangaprakash Deshpande, Olusola Ajilore, Teena Moody, Francesca Morfini, Ronald Ly, Joseph O'Neill, Jamie D Feusner
Depression is a commonly-occurring symptom in obsessive-compulsive disorder (OCD), and is associated with worse functional impairment, poorer quality of life, and poorer treatment response. Understanding the underlying neurochemical and connectivity-based brain mechanisms of this important symptom domain in OCD is necessary for development of novel, more globally effective treatments. To investigate biopsychological mechanisms of comorbid depression in OCD, we examined effective connectivity and neurochemical signatures in the pregenual anterior cingulate cortex (pACC), a structure known to be involved in both OCD and depression...
October 20, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29046136/phenotype-development-in-adolescents-with-tourette-syndrome-a-large-clinical-longitudinal-study
#5
Camilla Groth, Nanette Mol Debes, Liselotte Skov
Tourette syndrome (TS) is a neurodevelopmental disorder characterized by frequent comorbidities and a wide spectrum of phenotype presentations. This study aimed to describe the development of phenotypes in TS and tic-related impairment in a large longitudinal study of 226 children and adolescents followed up after 6 years. The participants were clinically examined to assess tic severity and impairment, obsessive compulsive disorder (OCD), and attention-deficit/hyperactivity disorder (ADHD). The development in phenotypes changed toward less comorbidity with 40% TS-only (no OCD or ADHD) (TS without OCD or ADHD) at baseline and 55% at follow-up...
November 2017: Journal of Child Neurology
https://www.readbyqxmd.com/read/29045575/shared-and-disorder-specific-neurocomputational-mechanisms-of-decision-making-in-autism-spectrum-disorder-and-obsessive-compulsive-disorder
#6
Christina O Carlisi, Luke Norman, Clodagh M Murphy, Anastasia Christakou, Kaylita Chantiluke, Vincent Giampietro, Andrew Simmons, Michael Brammer, Declan G Murphy, David Mataix-Cols, Katya Rubia
Autism spectrum disorder (ASD) and obsessive-compulsive disorder (OCD) often share phenotypes of repetitive behaviors, possibly underpinned by abnormal decision-making. To compare neural correlates underlying decision-making between these disorders, brain activation of boys with ASD (N = 24), OCD (N = 20) and typically developing controls (N = 20) during gambling was compared, and computational modeling compared performance. Patients were unimpaired on number of risky decisions, but modeling showed that both patient groups had lower choice consistency and relied less on reinforcement learning compared to controls...
October 17, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29044618/ultrasonographic-screening-for-subclinical-osteochondrosis-of-the-femoral-trochlea-in-foals-28-166-days-old-a-prospective-farm-study
#7
G Martel, D Crowley, J Olive, J Halley, S Laverty
BACKGROUND: Extensive osteochondritis dissecans (OCD) lesions of the lateral ridge of the trochlea of the femur (LRTF), the most common OCD- affected site in the stifle, have a poor outcome with surgical debridement and can be career ending. The early detection of osteochondrosis lesions and their conservative management holds the promise to enhance outcome. We hypothesise that ultrasonography is a valuable field screening tool to detect and monitor early subclinical LRTF osteochondrosis...
October 17, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/29044579/doubt-and-fear-of-self-in-bulimia-nervosa
#8
Samantha Wilson, Frederick Aardema, Kieron O'Connor
OBJECTIVE: Several overlapping cognitive processes have been identified in eating disorders (EDs) and obsessive compulsive disorder (OCD). Drawing from the OCD literature, the present study examined whether bulimia nervosa (BN) is associated with a maladaptive inductive reasoning style characterized by the over-investment in possibility-based (as opposed to reality-based) information. METHOD: Women with BN (n = 25) and healthy controls (HC; n = 24) completed the Inference Processes Task (IPT), an ecological inductive reasoning task previously validated in OCD samples...
October 16, 2017: International Journal of Eating Disorders
https://www.readbyqxmd.com/read/29042551/integrating-evolutionary-and-regulatory-information-with-a-multispecies-approach-implicates-genes-and-pathways-in-obsessive-compulsive-disorder
#9
Hyun Ji Noh, Ruqi Tang, Jason Flannick, Colm O'Dushlaine, Ross Swofford, Daniel Howrigan, Diane P Genereux, Jeremy Johnson, Gerard van Grootheest, Edna Grünblatt, Erik Andersson, Diana R Djurfeldt, Paresh D Patel, Michele Koltookian, Christina M Hultman, Michele T Pato, Carlos N Pato, Steven A Rasmussen, Michael A Jenike, Gregory L Hanna, S Evelyn Stewart, James A Knowles, Stephan Ruhrmann, Hans-Jörgen Grabe, Michael Wagner, Christian Rück, Carol A Mathews, Susanne Walitza, Daniëlle C Cath, Guoping Feng, Elinor K Karlsson, Kerstin Lindblad-Toh
Obsessive-compulsive disorder is a severe psychiatric disorder linked to abnormalities in glutamate signaling and the cortico-striatal circuit. We sequenced coding and regulatory elements for 608 genes potentially involved in obsessive-compulsive disorder in human, dog, and mouse. Using a new method that prioritizes likely functional variants, we compared 592 cases to 560 controls and found four strongly associated genes, validated in a larger cohort. NRXN1 and HTR2A are enriched for coding variants altering postsynaptic protein-binding domains...
October 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/29038990/personality-and-alexithymic-disparity-in-obsessive-compulsive-disorder-based-on-washing-and-checking
#10
Hwa-Sheng Tang, Po-Fei Chen, For-Wey Lung
The aim of this study was to investigate pathway relationship of personality characteristics and alexithymic traits in OCD symptoms of obsession, and compulsive behavior of washing and checking. Two-hundred and seventy patients diagnosed with OCD were consecutively recruited from the psychiatric outpatient department of a teaching hospital. Structural equation modeling showed those more neurotic, less extraverted and with higher levels of alexithymia difficulty identifying feelings (DIF), difficulty describing feelings (DDF) and externally oriented thinking (EOT) were more likely to develop obsessive thoughts...
October 17, 2017: Psychiatric Quarterly
https://www.readbyqxmd.com/read/29036632/mapping-compulsivity-in-the-dsm-5-obsessive-compulsive-and-related-disorders-cognitive-domains-neural-circuitry-and-treatment
#11
Naomi A Fineberg, Annemieke M Apergis-Schoute, M Matilde Vaghi, Paula Banca, Claire M Gillan, Valerie Voon, Samuel R Chamberlain, Cinosi Eduardo, Reid Jemma, Sonia Shahper, Edward T Bullmore, Barbara J Sahakian, Trevor W Robbins
Compulsions are repetitive, stereotyped thoughts and behaviors designed to reduce harm. Growing evidence suggests that the neurocognitive mechanisms mediating behavioural inhibition (motor inhibition, cognitive inflexibility) reversal learning and habit formation (shift from goal-directed to habitual responding) contribute toward compulsive activity in a broad range of disorders. In obsessive compulsive disorder (OCD), distributed network perturbation appears focussed around the pre-frontal cortex, caudate, putamen and associated neuro-circuitry...
September 23, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29035919/attenuation-of-compulsive-like-behavior-by-fluvoxamine-in-a-non-induced-mouse-model-of-obsessive-compulsive-disorder
#12
Swarup Mitra, Abel Bult-Ito
The current study evaluated the role of strain and compulsive trait differences in response to fluvoxamine, a common obsessive-compulsive disorder (OCD) drug, in two different mouse strains (BIG1 and BIG2) with a spontaneous compulsive-like phenotype. For compulsive-like nest-building behavior, dose-dependent attenuation of nesting by fluvoxamine was observed for the BIG1 compulsive-like strain during the first hour after administration. No significant differences were found for the BIG2 strain during the first hour, although a dose-dependent trend similar to that in the BIG1 strain was observed...
October 13, 2017: Behavioural Pharmacology
https://www.readbyqxmd.com/read/29033617/family-accommodation-in-adult-obsessive-compulsive-disorder-clinical-perspectives
#13
REVIEW
Umberto Albert, Alessandra Baffa, Giuseppe Maina
The term accommodation has been used to refer to family responses specifically related to obsessive-compulsive (OC) symptoms: it encompasses behaviors such as directly participating in compulsions, assisting a relative with obsessive-compulsive disorder (OCD) when he/she is performing a ritual, or helping him/her to avoid triggers that may precipitate obsessions and compulsions. At the opposite side, family responses to OCD may also include interfering with the rituals or actively opposing them; stopping accommodating OC symptoms or actively interfering with their performance is usually associated with greater distress and sometimes even with aggressive behaviors from the patients...
2017: Psychology Research and Behavior Management
https://www.readbyqxmd.com/read/29033332/disruption-of-core-planar-cell-polarity-signaling-regulates-renal-tubule-morphogenesis-but-is-not-cystogenic
#14
Koshi Kunimoto, Roy D Bayly, Eszter K Vladar, Tyson Vonderfecht, Anna-Rachel Gallagher, Jeffrey D Axelrod
Oriented cell division (OCD) and convergent extension (CE) shape developing renal tubules, and their disruption has been associated with polycystic kidney disease (PKD) genes, the majority of which encode proteins that localize to primary cilia. Core planar cell polarity (PCP) signaling controls OCD and CE in other contexts, leading to the hypothesis that disruption of PCP signaling interferes with CE and/or OCD to produce PKD. Nonetheless, the contribution of PCP to tubulogenesis and cystogenesis is uncertain, and two major questions remain unanswered...
October 11, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/29033063/factor-analysis-of-symptom-profile-in-early-onset-and-late-onset-ocd
#15
Sandeep Grover, Siddharth Sarkar, Gourav Gupta, Natasha Kate, Abhishek Ghosh, Subho Chakrabarti, Ajit Avasthi
This study aimed to assess the factor structure of early and late onset OCD. Additionally, cluster analysis was conducted in the same sample to assess the applicability of the factors. 345 participants were assessed with Yale Brown Obsessive Compulsive Scale symptom checklist. Patients were classified as early onset (onset of symptoms at age ≤ 18 years) and late onset (onset at age > 18 years) OCD depending upon the age of onset of the symptoms. Factor analysis and cluster analysis of early-onset and late-onset OCD was conducted...
October 2, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/29031217/quality-of-life-and-burden-in-caregivers-of-youth-with-obsessive-compulsive-disorder-presenting-for-intensive-treatment
#16
Monica S Wu, Rebecca Hamblin, Joshua Nadeau, Jessica Simmons, Ashley Smith, Meredith Wilson, Stephanie Eken, Brent Small, Vicky Phares, Eric A Storch
BACKGROUND: Pediatric obsessive-compulsive disorder (OCD) is associated with deleterious familial effects; caregivers are often enmeshed in the disorder and can experience considerable burden and decreased quality of life (QoL). Consequently, this study examined burden and QoL in caregivers of youth with OCD enrolled in an intensive outpatient or partial hospitalization program. METHOD: The relationships between caregiver QoL and burden and the following variables were investigated: OCD symptom severity, functioning (youth functional impairment, general family functioning), family (family accommodation, parental relationship satisfaction, positive aspects of caregiving), and comorbid psychopathology (caregiver anxiety and depressive symptoms, youth internalizing and externalizing behaviors)...
August 30, 2017: Comprehensive Psychiatry
https://www.readbyqxmd.com/read/29024795/are-valved-holding-chambers-vhcs-interchangeable-an-in-vitro-evaluation-of-vhc-equivalence
#17
Sanjeeva Dissanayake, Mark Nagel, Emanuela Falaschetti, Jason Suggett
INTRODUCTION: The European Medicines Agency (EMA) requires that a specific valved holding chamber (VHC) is designated for use with a given pressurised metered dose inhaler (pMDI). No other regulatory authorities impose similar requirements, implying that VHCs are interchangeable. This in vitro study, employing EMA assessment criteria, assessed the equivalence of four anti-static VHCs (aVHCs) versus the non-conducting VHC most widely referenced in pMDI monographs, the AeroChamber Plus™ (AC+) VHC...
October 9, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29017175/body-weight-changes-after-deep-brain-stimulation-for-obsessive-compulsive-disorder-or-depression
#18
Rosalie S N Linssen, Marloes S Oudijn, Mariska Mantione, Pepijn van den Munckhof, Damiaan Denys, P Richard Schuurman
BACKGROUND: In 2010, we published an often-cited case report describing smoking cessation and substantial weight loss after deep brain stimulation (DBS) for obsessive-compulsive disorder (OCD) in an obese patient. To test whether this single observation was also observed in the treated population at large, the weight changes of a larger cohort of patients who underwent DBS for OCD or major depressive disorder (MDD) were studied. RESULTS: Data were available for 46 patients (30 OCD and 16 MDD patients; mean age 46...
October 11, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28992533/neural-correlates-of-affective-and-non-affective-cognition-in-obsessive-compulsive-disorder-a-meta-analysis-of-functional-imaging-studies
#19
A Rasgon, W H Lee, E Leibu, A Laird, D Glahn, W Goodman, S Frangou
Obsessive compulsive disorder (OCD) is characterized by intrusive thoughts and repetitive ritualistic behaviors and has been associated with diverse functional brain abnormalities. We sought to synthesize current evidence from functional magnetic resonance imaging (fMRI) studies and examine their alignment to pathogenetic models of OCD. Following systematic review, we identified 54 task-fMRI studies published in the last decade comparing adults with OCD (n=1186) to healthy adults (n=1159) using tasks of affective and non-affective cognition...
September 1, 2017: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/28990850/the-relationship-between-toxoplasma-gondii-igg-antibodies-and-generalized-anxiety-disorder-and-obsessive-compulsive-disorder-in-children-and-adolescents-a-new-approach
#20
İsmail Akaltun, Soner Sertan Kara, Tayfun Kara
AIM: Toxoplasma gondii may play a role in the development of psychiatric diseases by affecting the brain. The purpose of this study was to examine the relation between serum toxoplasma IgG positivity and obsessive-compulsive disorder (OCD) and generalized anxiety disorder (GAD) in children and adolescents. METHOD: Sixty patients diagnosed with OCD and 60 patients with GAD presenting to the pediatric psychiatry clinic, together with 60 control group subjects with no psychiatric diagnosis, were included in the study...
October 9, 2017: Nordic Journal of Psychiatry
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