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Clarke AT, Fineberg NA, Pellegrini L, Laws KR. The relationship between cognitive phenotypes of compulsivity and impulsivity and clinical variables in obsessive-compulsive disorder: A systematic review and Meta-analysis. Compr Psychiatry 2024; 133:152491. [PMID: 38714143 DOI: 10.1016/j.comppsych.2024.152491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 01/23/2024] [Accepted: 03/04/2024] [Indexed: 05/09/2024] Open
Abstract
BACKGROUND This systematic review and meta-analysis explored the relationship between cognitive phenotypes of compulsivity and impulsivity and clinical variables in obsessive-compulsive disorder (OCD). METHODS We searched Pubmed, Scopus, Cochrane Library and PsychINFO databases until February 2023 for studies comparing patients with OCD and healthy controls on cognitive tests of compulsivity and impulsivity. The study followed PRISMA guidelines and was pre-registered on PROSPERO (CRD42021299017). RESULTS Meta-analyses of 112 studies involving 8313 participants (4289 patients with OCD and 4024 healthy controls) identified significant impairments in compulsivity (g = -0.58, [95%CI -0.68, -0.47]; k = 76) and impulsivity (g = -0.48, [95%CI -0.57, -0.38]; k = 63); no significant difference between impairments. Medication use and comorbid psychiatric disorders were not significantly related to impairments. No associations were revealed with OCD severity, depression/anxiety, or illness duration. CONCLUSION Cognitive phenotypes of compulsivity and impulsivity in patients with OCD appear to be orthogonal to clinical variables, including severity of OCD symptomatology. Their clinical impact is poorly understood and may require different clinical assessment tools and interventions.
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Affiliation(s)
- Aaron T Clarke
- School of Life and Medical Sciences, University of Hertfordshire, Hatfield, UK.
| | - Naomi A Fineberg
- School of Life and Medical Sciences, University of Hertfordshire, Hatfield, UK; Hertfordshire Partnership University NHS Foundation Trust, Welwyn Garden City, UK; University of Cambridge School of Clinical Medicine, Cambridge, UK
| | - Luca Pellegrini
- School of Life and Medical Sciences, University of Hertfordshire, Hatfield, UK; Hertfordshire Partnership University NHS Foundation Trust, Welwyn Garden City, UK; Centre for Psychedelic Research, Imperial College London, London, UK
| | - Keith R Laws
- School of Life and Medical Sciences, University of Hertfordshire, Hatfield, UK
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2
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Jacobson PT, Vilarello BJ, Tervo JP, Waring NA, Gudis DA, Goldberg TE, Devanand DP, Overdevest JB. Associations between olfactory dysfunction and cognition: a scoping review. J Neurol 2024; 271:1170-1203. [PMID: 38217708 PMCID: PMC11144520 DOI: 10.1007/s00415-023-12057-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 10/10/2023] [Accepted: 10/11/2023] [Indexed: 01/15/2024]
Abstract
INTRODUCTION Strong evidence suggests that olfactory dysfunction (OD) can predict additional neurocognitive decline in neurodegenerative conditions such as Alzheimer's and Parkinson's diseases. However, research exploring olfaction and cognition in younger populations is limited. The aim of this review is to evaluate cognitive changes among non-elderly adults with non-COVID-19-related OD. METHODS We performed a structured comprehensive literature search of PubMed, Ovid Embase, Web of Science, and Cochrane Library in developing this scoping review. The primary outcome of interest was the association between OD and cognitive functioning in adults less than 60 years of age. RESULTS We identified 2878 studies for title and abstract review, with 167 undergoing full text review, and 54 selected for data extraction. Of these, 34 studies reported on populations of individuals restricted to the ages of 18-60, whereas the remaining 20 studies included a more heterogeneous population with the majority of individuals in this target age range in addition to some above the age of 60. The etiologies for smell loss among the included studies were neuropsychiatric disorders (37%), idiopathic cause (25%), type 2 diabetes (7%), trauma (5%), infection (4%), intellectual disability (4%), and other (18%). Some studies reported numerous associations and at times mixed, resulting in a total number of associations greater than the included number of 54 studies. Overall, 21/54 studies demonstrated a positive association between olfaction and cognition, 7/54 demonstrated no association, 25/54 reported mixed results, and only 1/54 demonstrated a negative association. CONCLUSION Most studies demonstrate a positive correlation between OD and cognition, but the data are mixed with associations less robust in this young adult population compared to elderly adults. Despite the heterogeneity in study populations and outcomes, this scoping review serves as a starting point for further investigation on this topic. Notably, as many studies in this review involved disorders that may have confounding effects on both olfaction and cognition, future research should control for these confounders and incorporate non-elderly individuals with non-psychiatric causes of smell loss.
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Affiliation(s)
- Patricia T Jacobson
- Department of Otolaryngology-Head and Neck Surgery, New York-Presbyterian/Columbia University Irving Medical Center, New York, NY, USA
| | - Brandon J Vilarello
- Columbia University Vagelos College of Physicians and Surgeons, New York, NY, USA
| | - Jeremy P Tervo
- Columbia University Vagelos College of Physicians and Surgeons, New York, NY, USA
| | - Nicholas A Waring
- Columbia University Vagelos College of Physicians and Surgeons, New York, NY, USA
| | - David A Gudis
- Department of Otolaryngology-Head and Neck Surgery, New York-Presbyterian/Columbia University Irving Medical Center, New York, NY, USA
- Columbia University Vagelos College of Physicians and Surgeons, New York, NY, USA
| | - Terry E Goldberg
- Department of Psychiatry, New York-Presbyterian/Columbia University Irving Medical Center, New York, NY, USA
| | - D P Devanand
- Columbia University Vagelos College of Physicians and Surgeons, New York, NY, USA
- Department of Psychiatry, New York-Presbyterian/Columbia University Irving Medical Center, New York, NY, USA
| | - Jonathan B Overdevest
- Department of Otolaryngology-Head and Neck Surgery, New York-Presbyterian/Columbia University Irving Medical Center, New York, NY, USA.
- Columbia University Vagelos College of Physicians and Surgeons, New York, NY, USA.
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3
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Koparal M, Kapici Y, Aslan S, Hepkarsi S, Karataş M, Yılmazer C. Evaluation of Nasal Mucociliary Clearance as an Indicator of Nasal Function in Obsessive-Compulsive Patients: A Cross-Sectional Study. Indian J Otolaryngol Head Neck Surg 2023; 75:3263-3267. [PMID: 37974878 PMCID: PMC10645981 DOI: 10.1007/s12070-023-03972-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 06/12/2023] [Indexed: 11/19/2023] Open
Abstract
This clinical study aimed to compare the mucociliary clearance time in patients with OCD, a disease associated with neural olfactory disorders, with a healthy control group. The mucociliary clearance time of fifty-one patients with OCD and fifty-two healthy patients (control group) was compared. The saccharin nasal mucociliary clearance test (NMCT) was applied and recorded the sociodemographic data of all participants. The NMCT was longer in OCD patients than healthy controls. There was no statistically significant difference in sociodemographic data between the groups. Our results show that olfactory transmission pathways may be affected in OCD patients. Supplementary Information The online version contains supplementary material available at 10.1007/s12070-023-03972-2.
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Affiliation(s)
- Mehtap Koparal
- Department of Otolaryngology, Faculty of Medicine, Adiyaman University, Adiyaman, Turkey
| | - Yasar Kapici
- Kahta State Hospital Psychiatry Clinic, Adiyaman, Turkey
| | - Sefer Aslan
- Department of Internal Medicine, Adıyaman Training and Research Hospital, Adiyaman, Turkey
| | - Sevinc Hepkarsi
- Department of Otolaryngology, Faculty of Medicine, Adiyaman University, Adiyaman, Turkey
| | - Mehmet Karataş
- Department of Otolaryngology, Faculty of Medicine, Adiyaman University, Adiyaman, Turkey
| | - Cüneyt Yılmazer
- Department of Otolaryngology, Faculty of Medicine, Adiyaman University, Adiyaman, Turkey
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4
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Jalal B, Chamberlain SR, Sahakian BJ. Obsessive-compulsive disorder: Etiology, neuropathology, and cognitive dysfunction. Brain Behav 2023; 13:e3000. [PMID: 37137502 PMCID: PMC10275553 DOI: 10.1002/brb3.3000] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 03/14/2023] [Accepted: 03/24/2023] [Indexed: 05/05/2023] Open
Abstract
BACKGROUND This review provides an overview of obsessive-compulsive disorder (OCD) symptoms, including the four partially distinct subtypes of the disorder, current diagnostic criteria, and common comorbidities. Critically, it focuses on the etiology of OCD, including its underlying neuropathology, and examines cognitive dysfunction in OCD. METHODS This review study was conducted by library method. RESULTS We show how dysfunction in cortico-striato-thalamo-cortical (CSTC) circuits may underpin symptoms; and shed light on the putative neurochemistry within these loops such as the role of serotonin, dopamine, and glutamate systems. We also show how OCD is characterized by cognitive dysfunction including problems in cognitive flexibility, visuospatial memory, response inhibition, and goal-directed behavior, linked to aberrant activity within CSTC circuits. CONCLUSIONS In brief, research questions we shed light on include (1) what are the symptoms in OCD; (2) what is the etiology of the disorder and do existing models explain OCD; and (3) what are key cognitive deficits in OCD and do these improve with treatment?
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Affiliation(s)
- Baland Jalal
- Department of PsychiatryUniversity of Cambridge School of Clinical MedicineCambridgeUK
- Behavioural and Clinical Neuroscience Institute, Department of PsychologyUniversity of CambridgeCambridgeUK
| | - Samuel R. Chamberlain
- Faculty of Medicine, Department of PsychiatryUniversity of SouthamptonSouthamptonUK
- Specialist Clinic for Impulsive and Compulsive Disorders, and the Southern Gambling ServiceSouthern Health NHS Foundation TrustSouthamptonUK
| | - Barbara J. Sahakian
- Department of PsychiatryUniversity of Cambridge School of Clinical MedicineCambridgeUK
- Behavioural and Clinical Neuroscience Institute, Department of PsychologyUniversity of CambridgeCambridgeUK
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5
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Bruscolini A, Iannitelli A, Segatto M, Rosso P, Fico E, Buonfiglio M, Lambiase A, Tirassa P. Psycho-Cognitive Profile and NGF and BDNF Levels in Tears and Serum: A Pilot Study in Patients with Graves' Disease. Int J Mol Sci 2023; 24:ijms24098074. [PMID: 37175781 PMCID: PMC10178719 DOI: 10.3390/ijms24098074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 04/24/2023] [Accepted: 04/26/2023] [Indexed: 05/15/2023] Open
Abstract
Nerve Growth Factor (NGF) and Brain derived Neurotrophic Factor (BDNF) mature/precursor imbalance in tears and serum is suggested as a risk factor and symptomatology aggravation in ophthalmology and neuropsychiatric disturbances. Cognitive and mood alterations are reported by patients with Graves' Orbitopathy (GO), indicating neurotrophin alterations might be involved. To address this question, the expression levels of NGF and BDNF and their precursors in serum and tears of GO patients were analyzed and correlated with the ophthalmological and psycho-cognitive symptoms. Hamilton Rating Scale for Anxiety (HAM-A) and Depression (HAM-D), Temperament and Character Inventory (TCI), and Cambridge Neuropsychological Test Automated Battery (CANTAB) test were used as a score. NGF and BDNF levels were measured using ELISA and Western Blot and statistically analyzed for psychiatric/ocular variable trend association. GO patients show memorization time and level of distraction increase, together with high irritability and impulsiveness. HAM-A and CANTAB variables association, and some TCI dimensions are also found. NGF and BDNF expression correlates with ophthalmological symptoms only in tears, while mature/precursor NGF and BDNF correlate with the specific psycho-cognitive variables both in tears and serum. Our study is the first to show that changes in NGF and BDNF processing in tears and serum might profile ocular and cognitive alterations in patients.
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Affiliation(s)
- Alice Bruscolini
- Department of Sense Organs, University Sapienza of Rome, Viale del Policlinico 155, 00161 Rome, Italy
| | - Angela Iannitelli
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Via Vetoio, Coppito 2, 67100 L'Aquila, Italy
| | - Marco Segatto
- Department of Biosciences and Territory, University of Molise, Contrada Fonte Lappone, 86090 Pesche, Italy
| | - Pamela Rosso
- Institute of Biochemistry & Cell Biology (IBBC), National Research Council (CNR), Unit of Translational & Biomolecular Medicine "Rita Levi-Montalcini", Viale dell'Università 33, 00185 Rome, Italy
| | - Elena Fico
- Institute of Biochemistry & Cell Biology (IBBC), National Research Council (CNR), Unit of Translational & Biomolecular Medicine "Rita Levi-Montalcini", Viale dell'Università 33, 00185 Rome, Italy
| | - Marzia Buonfiglio
- Headache Center, Policlinico Umberto I, Sapienza University, Viale dell'Università 33, 00185 Rome, Italy
| | - Alessandro Lambiase
- Department of Sense Organs, University Sapienza of Rome, Viale del Policlinico 155, 00161 Rome, Italy
| | - Paola Tirassa
- Institute of Biochemistry & Cell Biology (IBBC), National Research Council (CNR), Unit of Translational & Biomolecular Medicine "Rita Levi-Montalcini", Viale dell'Università 33, 00185 Rome, Italy
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Challakere Ramaswamy VM, Schofield PW. Olfaction and Executive Cognitive Performance: A Systematic Review. Front Psychol 2022; 13:871391. [PMID: 35615205 PMCID: PMC9125097 DOI: 10.3389/fpsyg.2022.871391] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 04/14/2022] [Indexed: 11/30/2022] Open
Abstract
Objective tests of olfaction are widely available to aid in the assessment of olfaction. Their clearest role is in the characterization of olfactory changes, either reported by or suspected in a patient. There is a rapidly growing literature concerned with the association of olfactory changes with certain neuropsychiatric conditions and the use of olfactory testing to supplement conventional assessments in clinical and research practice is evolving. Neural pathways important for olfactory processing overlap extensively with pathways important for cognitive functioning, and especially those important for executive functioning, many of which are concentrated in the frontal lobes. Previous work has identified associations between performance on certain olfactory tests (most frequently olfactory identification) and executive functioning and behavioral measures (e.g. of impulsivity). More recently, similar associations have also been identified in non-clinical samples, raising new questions as to the utility of olfactory test scores as proxy measures for non-olfactory phenomena. In this systemic review, we sought to identify studies, both clinical and non-clinical, that investigated the associations of olfaction with performance on tasks sensitive to frontal lobe functioning. Our search criteria led to the identification of 70 studies published in English. We examined in detail and tabulated the data from these studies, highlighted each study's key findings, and critically evaluated these studies. We use the results of this review to reflect on some of the current and future challenges concerning the use of olfactory testing in clinical neuropsychiatric practice and research and speculate on the potential benefits of administering phonemic fluency in combination with olfactory testing to enhance its predictive value.
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Affiliation(s)
- Vasudeva Murthy Challakere Ramaswamy
- School of Medicine and Public Health, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW, Australia
- *Correspondence: Vasudeva Murthy Challakere Ramaswamy
| | - Peter William Schofield
- School of Medicine and Public Health, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW, Australia
- Neuropsychiatry Service, Hunter New England Mental Health, New Lambton, NSW, Australia
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7
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Predicting forensic inpatient violence with odor identification and neuropsychological measures of impulsivity: A preliminary study. J Psychiatr Res 2022; 147:154-158. [PMID: 35033786 DOI: 10.1016/j.jpsychires.2022.01.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 12/25/2021] [Accepted: 01/09/2022] [Indexed: 11/20/2022]
Abstract
Although most persons with a schizophrenia-spectrum disorder are not aggressive, a minority is at higher risks to commit violent acts, especially in forensic settings. The first goal of this study was to assess inpatients in a maximum-security hospital with a self-report questionnaire, neuropsychological tests of behavioral impulsivity/attentional capacities and olfactory functions to determine the strength of association between these measures. A secondary objective was to assess the predictive value of these measures for the commission of violent acts within the institution. Sixty-two male inpatients were evaluated with the neuropsychological battery. As expected, self-report assessment of trait impulsivity (questionnaire) did not significantly correlate with behavioral measures of state impulsivity. In addition, neuropsychological measures of impulsivity and attention were significantly associated with odor identification capacities. Finally, attentional deficits (but not impulsivity) and odor identification were both significant and independent predictors of institutional violence. Neuropsychological assessments and odor functions might help predicting (and explaining) institutional violence committed in forensic settings.
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8
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Li ZT, Tan SZ, Lyu ZH, Zou LQ. Olfactory identification impairment in early-and late-onset obsessive-compulsive disorder. Early Interv Psychiatry 2022; 16:133-138. [PMID: 33725742 DOI: 10.1111/eip.13136] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 02/10/2021] [Accepted: 03/06/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Early-onset obsessive-compulsive disorder (EOCD) is a comparatively severe subtype of obsessive-compulsive disorder (OCD). Olfactory dysfunction is a common symptom of OCD, but all previous studies have focused on late-onset OCD (LOCD). METHODS The current study compared olfactory identification ability in EOCD patients and age-matched and sex-matched LOCD patients and healthy controls. Thirty patients with EOCD, 30 patients with LOCD and 30 healthy controls were included in the study. Olfactory function was measured using the University of Pennsylvania Smell Identification Test. The Logical Memory and Visual Reproduction components of the Revised Wechsler Memory Scale were used to evaluate verbal and visual memory. RESULTS There were significant differences in olfactory identification ability between the three groups. EOCD patients were comparable to LOCD patients, while both patients' group showing worse olfactory identification ability than controls. Olfactory identification ability was not significantly correlated with verbal and visual memory or clinical symptoms in the EOCD group or the LOCD group. CONCLUSIONS The results of the present study suggest that olfactory identification ability may be a relatively stable indicator of OCD, independent of age, duration of illness, verbal and visual memory, and severity of clinical symptoms.
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Affiliation(s)
- Ze-Tian Li
- Chemical Senses and Mental Health Lab, Department of Psychology, School of Public Health, Southern Medical University, Guangzhou, Guangdong, China
| | - Shao-Zhen Tan
- Guangzhou Social Welfare Institute, Guangzhou, Guangdong, China
| | - Zhi-Hong Lyu
- Chemical Senses and Mental Health Lab, Department of Psychology, School of Public Health, Southern Medical University, Guangzhou, Guangdong, China.,Department of Psychiatry, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Lai-Quan Zou
- Chemical Senses and Mental Health Lab, Department of Psychology, School of Public Health, Southern Medical University, Guangzhou, Guangdong, China.,Department of Psychiatry, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
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9
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Chamberlain SR, Solly JE, Hook RW, Vaghi MM, Robbins TW. Cognitive Inflexibility in OCD and Related Disorders. Curr Top Behav Neurosci 2021; 49:125-145. [PMID: 33547598 DOI: 10.1007/7854_2020_198] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cognitive inflexibility is suggested by the hallmark symptoms of obsessive-compulsive disorder (OCD), namely the occurrence of repetitive thoughts and/or behaviours that persist despite being functionally impairing and egodystonic to the individual. As well as being implied by the top-level symptoms, cognitive inflexibility in OCD, and some related conditions, has also been objectively quantified in case-control studies using computerised cognitive tasks. This chapter begins by considering the objective measurement of different aspects of cognitive flexibility using neuropsychological paradigms, with a focus on neural and neurochemical substrates. It moves on to conduct a systematic review and meta-analysis of findings from a widely deployed flexibility task: the Intra-Dimensional/Extra-Dimensional Set-Shift Task (IDED). By pooling data from 11 studies (335 OCD patients and 311 controls), we show that Extra-Dimensional (ED) shift deficits are a robust and reproducible finding (effect size medium-large) in OCD across the literature, and that this deficit is not attributable to group differences in age or IQ. The OCD ED deficit is then discussed in terms of dysfunction of fronto-striatal pathways (as exemplified, for example, by functional connectivity data), and the putative role of different neurotransmitters. We consider evidence that impaired ED shifting constitutes a candidate vulnerability marker (or 'endophenotype') for OCD. The available literature is then surveyed as to ED findings in other obsessive-compulsive (OC) related disorders (e.g. hoarding, body-dysmorphic disorder, and trichotillomania), as well as in non-OC disorders (schizophrenia and anxiety symptoms in general). Lastly, we consider more recent, emerging developments in the quantification of compulsivity using cognitive tasks and questionnaires, as well as key directions for future research, including the need to refine compulsivity and its composite cognitive processes.
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Affiliation(s)
- Samuel R Chamberlain
- Department of Psychiatry, University of Cambridge, Addenbrooke's Hospital, Cambridge, UK. .,Cambridgeshire and Peterborough NHS Foundation Trust, Cambridge, UK.
| | - Jeremy E Solly
- Department of Psychiatry, University of Cambridge, Addenbrooke's Hospital, Cambridge, UK.,Cambridgeshire and Peterborough NHS Foundation Trust, Cambridge, UK
| | - Roxanne W Hook
- Department of Psychiatry, University of Cambridge, Addenbrooke's Hospital, Cambridge, UK.,Cambridgeshire and Peterborough NHS Foundation Trust, Cambridge, UK
| | - Matilde M Vaghi
- Max Planck University College London (UCL) Centre for Computational Psychiatry and Ageing Research, London, UK
| | - Trevor W Robbins
- Department of Psychology, University of Cambridge, Cambridge, UK
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10
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Jalal B, Brühl A, O'Callaghan C, Piercy T, Cardinal RN, Ramachandran VS, Sahakian BJ. Novel Smartphone Interventions Improve Cognitive Flexibility and Obsessive-Compulsive Disorder Symptoms in Individuals with Contamination Fears. Sci Rep 2018; 8:14923. [PMID: 30353111 PMCID: PMC6199277 DOI: 10.1038/s41598-018-33142-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 09/14/2018] [Indexed: 11/09/2022] Open
Abstract
One type of obsessive-compulsive disorder (OCD) is characterized by contamination fears and compulsive cleansing. Few effective treatments are available for this debilitating condition. Compulsive symptoms, such as excessive washing, are believed to be mediated by cognitive inflexibility-arguably the most striking cognitive impairment in OCD. In this study, we investigated the effects of two novel smartphone interventions on cognitive flexibility and OCD symptoms in healthy individuals with OCD-like contamination fears. In the first intervention, participants watched a brief video recording of themselves engaging in handwashing on a smartphone, four times a day, for a total of one week (N = 31). The second intervention was similar except that participants watched themselves repeatedly touching a disgust-inducing object (N = 31). In a third (control) "intervention", participants watched themselves performing sequential hand movements (N = 31). As hypothesized, the two smartphone interventions, unlike the control, improved cognitive flexibility; as assessed on the Intradimensional-Extradimensional Set Shifting task (a sensitive marker of cognitive flexibility). The two interventions, unlike the control, also improved OCD symptoms (measured with the Obsessive-Compulsive Inventory-Revised and Yale-Brown Obsessive-Compulsive Scale). Finally, we found high levels of adherence to the interventions. These findings have significant clinical implications for OCD.
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Affiliation(s)
- Baland Jalal
- University of Cambridge School of Clinical Medicine, Department of Psychiatry and Behavioural and Clinical Neuroscience Institute, Herchel Smith Building for Brain and Mind Sciences, Cambridge, CB2 0QQ, Cambridge Biomedical Campus, UK.
| | - Annette Brühl
- University of Cambridge School of Clinical Medicine, Department of Psychiatry and Behavioural and Clinical Neuroscience Institute, Herchel Smith Building for Brain and Mind Sciences, Cambridge, CB2 0QQ, Cambridge Biomedical Campus, UK
- Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zurich,, Zurich, Switzerland
| | - Claire O'Callaghan
- University of Cambridge School of Clinical Medicine, Department of Psychiatry and Behavioural and Clinical Neuroscience Institute, Herchel Smith Building for Brain and Mind Sciences, Cambridge, CB2 0QQ, Cambridge Biomedical Campus, UK
| | - Thomas Piercy
- University of Cambridge School of Clinical Medicine, Department of Psychiatry and Behavioural and Clinical Neuroscience Institute, Herchel Smith Building for Brain and Mind Sciences, Cambridge, CB2 0QQ, Cambridge Biomedical Campus, UK
| | - Rudolf N Cardinal
- University of Cambridge School of Clinical Medicine, Department of Psychiatry and Behavioural and Clinical Neuroscience Institute, Herchel Smith Building for Brain and Mind Sciences, Cambridge, CB2 0QQ, Cambridge Biomedical Campus, UK
- Liaison Psychiatry Service, Cambridgeshire & Peterborough NHS Foundation Trust/Cambridge University Hospitals NHS Foundation Trust, Cambridge Biomedical Campus, Cambridge, CB2 0QQ, UK
| | | | - Barbara J Sahakian
- University of Cambridge School of Clinical Medicine, Department of Psychiatry and Behavioural and Clinical Neuroscience Institute, Herchel Smith Building for Brain and Mind Sciences, Cambridge, CB2 0QQ, Cambridge Biomedical Campus, UK
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11
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Herman AM, Critchley H, Duka T. Decreased olfactory discrimination is associated with impulsivity in healthy volunteers. Sci Rep 2018; 8:15584. [PMID: 30349020 PMCID: PMC6197201 DOI: 10.1038/s41598-018-34056-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 10/05/2018] [Indexed: 01/09/2023] Open
Abstract
In clinical populations, olfactory abilities parallel executive function, implicating shared neuroanatomical substrates within the ventral prefrontal cortex. In healthy individuals, the relationship between olfaction and personality traits or certain cognitive and behavioural characteristics remains unexplored. We therefore tested if olfactory function is associated with trait and behavioural impulsivity in nonclinical individuals. Eighty-three healthy volunteers (50 females) underwent quantitative assessment of olfactory function (odour detection threshold, discrimination, and identification). Each participant was rated for trait impulsivity index using the Barratt Impulsiveness Scale and performed a battery of tasks to assess behavioural impulsivity (Stop Signal Task, SST; Information Sampling Task, IST; Delay Discounting). Lower odour discrimination predicted high ratings in non-planning impulsivity (Barratt Non-Planning impulsivity subscale); both, lower odour discrimination and detection threshold predicted low inhibitory control (SST; increased motor impulsivity). These findings extend clinical observations to support the hypothesis that deficits in olfactory ability are linked to impulsive tendencies within the healthy population. In particular, the relationship between olfactory abilities and behavioural inhibitory control (in the SST) reinforces evidence for functional overlap between neural networks involved in both processes. These findings may usefully inform the stratification of people at risk of impulse-control-related problems and support planning early clinical interventions.
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Affiliation(s)
- Aleksandra M Herman
- Behavioural and Clinical Neuroscience, School of Psychology, University of Sussex, Brighton, BN1 9QH, UK.
| | - Hugo Critchley
- Psychiatry, Department of Neuroscience, Brighton and Sussex Medical School (BSMS), University of Sussex, Brighton, UK.,Sackler Centre for Consciousness Science, University of Sussex, Brighton, UK
| | - Theodora Duka
- Behavioural and Clinical Neuroscience, School of Psychology, University of Sussex, Brighton, BN1 9QH, UK.,Sussex Addiction and Intervention Centre, University of Sussex, Brighton, BN1 9QH, UK
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12
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Hirjak D, Meyer-Lindenberg A, Fritze S, Sambataro F, Kubera KM, Wolf RC. Motor dysfunction as research domain across bipolar, obsessive-compulsive and neurodevelopmental disorders. Neurosci Biobehav Rev 2018; 95:315-335. [PMID: 30236781 DOI: 10.1016/j.neubiorev.2018.09.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 08/08/2018] [Accepted: 09/12/2018] [Indexed: 02/07/2023]
Abstract
Although genuine motor abnormalities (GMA) are frequently found in schizophrenia, they are also considered as an intrinsic feature of bipolar, obsessive-compulsive, and neurodevelopmental disorders with early onset such as autism, ADHD, and Tourette syndrome. Such transnosological observations strongly suggest a common neural pathophysiology. This systematic review highlights the evidence on GMA and their neuroanatomical substrates in bipolar, obsessive-compulsive, and neurodevelopmental disorders. The data lends support for a common pattern contributing to GMA expression in these diseases that seems to be related to cerebello-thalamo-cortical, fronto-parietal, and cortico-subcortical motor circuit dysfunction. The identified studies provide first evidence for a motor network dysfunction as a correlate of early neurodevelopmental deviance prior to clinical symptom expression. There are also first hints for a developmental risk factor model of these mental disorders. An in-depth analysis of motor networks and related patho-(physiological) mechanisms will not only help promoting Research Domain Criteria (RDoC) Motor System construct, but also facilitate the development of novel psychopharmacological models, as well as the identification of neurobiologically plausible target sites for non-invasive brain stimulation.
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Affiliation(s)
- Dusan Hirjak
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.
| | - Andreas Meyer-Lindenberg
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Stefan Fritze
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | | | - Katharina M Kubera
- Center for Psychosocial Medicine, Department of General Psychiatry, Heidelberg University, Heidelberg, Germany
| | - Robert C Wolf
- Center for Psychosocial Medicine, Department of General Psychiatry, Heidelberg University, Heidelberg, Germany
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Kamath V, Paksarian D, Cui L, Moberg PJ, Turetsky BI, Merikangas KR. Olfactory processing in bipolar disorder, major depression, and anxiety. Bipolar Disord 2018; 20:547-555. [PMID: 29441710 DOI: 10.1111/bdi.12625] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 12/22/2017] [Indexed: 01/13/2023]
Abstract
OBJECTIVES Although olfactory abnormalities are well established in schizophrenia, considerably less work has examined olfactory performance in other neuropsychiatric conditions. In the current study, we examined odor identification, odor discrimination, detection threshold, and odor hedonic processing performance in individuals with bipolar I disorder (n = 43; n = 13 with psychotic features), bipolar II disorder (n = 48), major depressive disorder (MDD) (n = 134), anxiety (n = 48), and no mental disorder (n = 72) who participated in a community-based family study. METHODS Best estimate DSM-IV diagnoses were based on in-depth personal interviews as well as interviews with family members. Olfactory tests were administered during an in-person clinical visit and were compared using robust linear regression adjusting for age, sex, and psychiatric medication use, as well as nicotine use when necessary. RESULTS Compared to controls, odor identification performance was lower among individuals with MDD (b = -1.37, 95% confidence interval [CI]: -2.50, -0.24) and bipolar I disorder (b = -1.79, 95% CI: -3.51, -0.67). Among the latter group, performance was only reduced among those with psychotic features (b = -3.49, 95% CI: -6.33, -0.65), particularly for pleasant odors (b = -1.46, 95% CI: -2.51, -0.42). Those with MDD showed lower identification accuracy for neutral odors (b = -0.63, 95% CI: -1.20, -0.06). Performances on measures of odor discrimination and detection threshold did not differ by diagnostic group. CONCLUSIONS Collectively, these findings indicate that odor identification difficulties may exist in mood disorders, especially when psychotic features are present. In contrast, the global olfactory dysfunction observed in schizophrenia may not be a feature of other neuropsychiatric conditions.
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Affiliation(s)
- Vidyulata Kamath
- Division of Medical Psychology, Department of Psychiatry and Behavioral Sciences, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Diana Paksarian
- Genetic Epidemiology Research Branch, Intramural Research Program, National Institute of Mental Health, Bethesda, MD, USA
| | - Lihong Cui
- Genetic Epidemiology Research Branch, Intramural Research Program, National Institute of Mental Health, Bethesda, MD, USA
| | - Paul J Moberg
- Neuropsychiatry Section, Department of Psychiatry, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.,Smell and Taste Center, Department of Otorhinolaryngology: Head & Neck Surgery, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Bruce I Turetsky
- Neuropsychiatry Section, Department of Psychiatry, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.,Smell and Taste Center, Department of Otorhinolaryngology: Head & Neck Surgery, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Kathleen R Merikangas
- Genetic Epidemiology Research Branch, Intramural Research Program, National Institute of Mental Health, Bethesda, MD, USA
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15
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Olfactory disturbances in ageing with and without dementia: towards new diagnostic tools. The Journal of Laryngology & Otology 2017; 131:572-579. [PMID: 28424103 DOI: 10.1017/s0022215117000858] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
BACKGROUND Olfactory disorders increase with age and often affect elderly people who have pre-dementia or dementia. Despite the frequent occurrence of olfactory changes at the early stages of neurodegenerative disorders such as Alzheimer's disease, olfactory disorders are rarely assessed in daily clinical practice, mainly due to a lack of standardised assessment tools. The aims of this review were to (1) summarise the existing literature on olfactory disorders in ageing populations and patients with neurodegenerative disorders; (2) present the strengths and weaknesses of current olfactory disorder assessment tools; and (3) discuss the benefits of developing specific olfactory tests for neurodegenerative diseases. METHODS A systematic review was performed of literature published between 2000 and 2015 addressing olfactory disorders in elderly people with or without Alzheimer's disease or other related disorders to identify the main tools currently used for olfactory disorder assessment. RESULTS Olfactory disorder assessment is a promising method for improving both the early and differential diagnosis of Alzheimer's disease. However, the current lack of consensus on which tests should be used does not permit the consistent integration of olfactory disorder assessment into clinical settings. CONCLUSION Otolaryngologists are encouraged to use olfactory tests in older adults to help predict the development of neurodegenerative diseases. Olfactory tests should be specifically adapted to assess olfactory disorders in Alzheimer's disease patients.
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Norman LJ, Carlisi CO, Christakou A, Cubillo A, Murphy CM, Chantiluke K, Simmons A, Giampietro V, Brammer M, Mataix-Cols D, Rubia K. Shared and disorder-specific task-positive and default mode network dysfunctions during sustained attention in paediatric Attention-Deficit/Hyperactivity Disorder and obsessive/compulsive disorder. Neuroimage Clin 2017; 15:181-193. [PMID: 28529874 PMCID: PMC5429245 DOI: 10.1016/j.nicl.2017.04.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 03/29/2017] [Accepted: 04/15/2017] [Indexed: 12/24/2022]
Abstract
Patients with Attention-Deficit/Hyperactivity Disorder (ADHD) and obsessive/compulsive disorder (OCD) share problems with sustained attention, and are proposed to share deficits in switching between default mode and task positive networks. The aim of this study was to investigate shared and disorder-specific brain activation abnormalities during sustained attention in the two disorders. Twenty boys with ADHD, 20 boys with OCD and 20 age-matched healthy controls aged between 12 and 18 years completed a functional magnetic resonance imaging (fMRI) version of a parametrically modulated sustained attention task with a progressively increasing sustained attention load. Performance and brain activation were compared between groups. Only ADHD patients were impaired in performance. Group by sustained attention load interaction effects showed that OCD patients had disorder-specific middle anterior cingulate underactivation relative to controls and ADHD patients, while ADHD patients showed disorder-specific underactivation in left dorsolateral prefrontal cortex/dorsal inferior frontal gyrus (IFG). ADHD and OCD patients shared left insula/ventral IFG underactivation and increased activation in posterior default mode network relative to controls, but had disorder-specific overactivation in anterior default mode regions, in dorsal anterior cingulate for ADHD and in anterior ventromedial prefrontal cortex for OCD. In sum, ADHD and OCD patients showed mostly disorder-specific patterns of brain abnormalities in both task positive salience/ventral attention networks with lateral frontal deficits in ADHD and middle ACC deficits in OCD, as well as in their deactivation patterns in medial frontal DMN regions. The findings suggest that attention performance in the two disorders is underpinned by disorder-specific activation patterns.
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Affiliation(s)
- Luke J Norman
- Department of Child and Adolescent Psychiatry, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK.
| | - Christina O Carlisi
- Department of Child and Adolescent Psychiatry, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - Anastasia Christakou
- Centre for Integrative Neuroscience and Neurodynamics, School of Psychology and Clinical Language Sciences, University of Reading, UK
| | - Ana Cubillo
- Department of Child and Adolescent Psychiatry, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - Clodagh M Murphy
- Department of Child and Adolescent Psychiatry, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - Kaylita Chantiluke
- Department of Child and Adolescent Psychiatry, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - Andrew Simmons
- Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK; National Institute for Health Research (NIHR) Biomedical Research Centre (BRC) for Mental Health at South London and Maudsley NHS Foundation Trust and Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK
| | - Vincent Giampietro
- Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - Michael Brammer
- Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - David Mataix-Cols
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Katya Rubia
- Department of Child and Adolescent Psychiatry, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
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Abstract
Obsessive-compulsive disorder (OCD) is a mental disorder featuring obsessions (intrusive thoughts) and compulsions (repetitive behaviors performed in the context of rigid rituals). There is strong evidence for a neurobiological basis of this disorder, involving limbic cortical regions and related basal ganglion areas. However, more research is needed to lift the veil on the precise nature of that involvement and the way it drives the clinical expression of OCD. Altered cognitive functions may underlie the symptoms and thus draw a link between the clinical expression of the disorder and its neurobiological etiology. Our extensive review demonstrates that OCD patients do present a broad range of neuropsychological dysfunctions across all cognitive domains (memory, attention, flexibility, inhibition, verbal fluency, planning, decision-making), but some methodological issues temper this observation. Thus, future research should have a more integrative approach to cognitive functioning, gathering contributions of both experimental psychology and more fundamental neurosciences.
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Affiliation(s)
- Nabil Benzina
- "Behaviour, Emotion, and Basal Ganglia" Team, Inserm U1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S1127, Institut du Cerveau et de la Moelle épinière, ICM, 75013, Paris, France.
| | - Luc Mallet
- "Behaviour, Emotion, and Basal Ganglia" Team, Inserm U1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S1127, Institut du Cerveau et de la Moelle épinière, ICM, 75013, Paris, France
- AP-HP, Service de Psychiatrie, DHU PePsy, Hôpital Henri Mondor, Université Paris-Est Créteil, INSERM U955, Fondation FondaMental, Créteil, France
| | - Eric Burguière
- "Behaviour, Emotion, and Basal Ganglia" Team, Inserm U1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S1127, Institut du Cerveau et de la Moelle épinière, ICM, 75013, Paris, France
| | - Karim N'Diaye
- "Behaviour, Emotion, and Basal Ganglia" Team, Inserm U1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S1127, Institut du Cerveau et de la Moelle épinière, ICM, 75013, Paris, France
| | - Antoine Pelissolo
- AP-HP, Service de Psychiatrie, DHU PePsy, Hôpital Henri Mondor, Université Paris-Est Créteil, INSERM U955, Fondation FondaMental, Créteil, France
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Del Casale A, Rapinesi C, Kotzalidis GD, De Rossi P, Curto M, Janiri D, Criscuolo S, Alessi MC, Ferri VR, De Giorgi R, Sani G, Ferracuti S, Girardi P, Brugnoli R. Executive functions in obsessive-compulsive disorder: An activation likelihood estimate meta-analysis of fMRI studies. World J Biol Psychiatry 2016; 17:378-93. [PMID: 26642972 DOI: 10.3109/15622975.2015.1102323] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
OBJECTIVES To identify activation changes assessed in functional magnetic resonance imaging (fMRI) studies of obsessive-compulsive disorder (OCD) through Activation Likelihood Estimate meta-analysis. METHODS We included 28 peer-reviewed standard stereotactic space studies assessing adult OCD patients (OCDpts) vs. healthy controls (HCs) with fMRI during executive task performance. RESULTS In within-group analyses, HCs showed task-related activations in bilateral inferior frontal gyri, right middle frontal gyrus, right inferior parietal lobule, right claustrum, bilateral cingulate gyri, and left caudate body. OCDpts showed task-related left-sided activations in the superior, medial, and inferior frontal gyri, and thalamus, and bilateral activations in the middle frontal gyri, inferior parietal lobule, and insular cortices. Subtraction analysis showed increased left middle frontal gyrus activation in OCDpts. In between-groups analyses, OCDpts hypoactivated the right caudate body, left putamen, left ACC, and right medial and middle frontal gyri. Right caudate hypoactivation persisted also after applying Family-wise error algorithms. CONCLUSIONS This meta-analysis confirms that during executive functioning OCDpts show a functional deficit of the right caudate body, which could represent a major neural functional correlate of their illness.
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Affiliation(s)
- Antonio Del Casale
- a Department of Neuroscience, Mental Health, and Sensory Organs (NESMOS) , School of Medicine and Psychology, Sapienza University; Unit of Psychiatry, Sant'andrea Hospital , Rome , Italy ;,b Department of Psychiatric Rehabilitation , P. Alberto Mileno Onlus Foundation, San Francesco Institute , Vasto , CH , Italy
| | - Chiara Rapinesi
- a Department of Neuroscience, Mental Health, and Sensory Organs (NESMOS) , School of Medicine and Psychology, Sapienza University; Unit of Psychiatry, Sant'andrea Hospital , Rome , Italy
| | - Georgios D Kotzalidis
- a Department of Neuroscience, Mental Health, and Sensory Organs (NESMOS) , School of Medicine and Psychology, Sapienza University; Unit of Psychiatry, Sant'andrea Hospital , Rome , Italy
| | - Pietro De Rossi
- a Department of Neuroscience, Mental Health, and Sensory Organs (NESMOS) , School of Medicine and Psychology, Sapienza University; Unit of Psychiatry, Sant'andrea Hospital , Rome , Italy
| | - Martina Curto
- a Department of Neuroscience, Mental Health, and Sensory Organs (NESMOS) , School of Medicine and Psychology, Sapienza University; Unit of Psychiatry, Sant'andrea Hospital , Rome , Italy
| | - Delfina Janiri
- a Department of Neuroscience, Mental Health, and Sensory Organs (NESMOS) , School of Medicine and Psychology, Sapienza University; Unit of Psychiatry, Sant'andrea Hospital , Rome , Italy
| | - Silvia Criscuolo
- a Department of Neuroscience, Mental Health, and Sensory Organs (NESMOS) , School of Medicine and Psychology, Sapienza University; Unit of Psychiatry, Sant'andrea Hospital , Rome , Italy
| | - Maria Chiara Alessi
- a Department of Neuroscience, Mental Health, and Sensory Organs (NESMOS) , School of Medicine and Psychology, Sapienza University; Unit of Psychiatry, Sant'andrea Hospital , Rome , Italy
| | - Vittoria Rachele Ferri
- a Department of Neuroscience, Mental Health, and Sensory Organs (NESMOS) , School of Medicine and Psychology, Sapienza University; Unit of Psychiatry, Sant'andrea Hospital , Rome , Italy
| | - Riccardo De Giorgi
- c Department of Pathology , Foundation Year 2, Aberdeen Royal Infirmary (NHS Grampian) , Aberdeen , UK
| | - Gabriele Sani
- a Department of Neuroscience, Mental Health, and Sensory Organs (NESMOS) , School of Medicine and Psychology, Sapienza University; Unit of Psychiatry, Sant'andrea Hospital , Rome , Italy
| | - Stefano Ferracuti
- a Department of Neuroscience, Mental Health, and Sensory Organs (NESMOS) , School of Medicine and Psychology, Sapienza University; Unit of Psychiatry, Sant'andrea Hospital , Rome , Italy
| | - Paolo Girardi
- a Department of Neuroscience, Mental Health, and Sensory Organs (NESMOS) , School of Medicine and Psychology, Sapienza University; Unit of Psychiatry, Sant'andrea Hospital , Rome , Italy
| | - Roberto Brugnoli
- a Department of Neuroscience, Mental Health, and Sensory Organs (NESMOS) , School of Medicine and Psychology, Sapienza University; Unit of Psychiatry, Sant'andrea Hospital , Rome , Italy
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Aznar S, Hervig MES. The 5-HT2A serotonin receptor in executive function: Implications for neuropsychiatric and neurodegenerative diseases. Neurosci Biobehav Rev 2016; 64:63-82. [DOI: 10.1016/j.neubiorev.2016.02.008] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 11/05/2015] [Accepted: 02/08/2016] [Indexed: 02/07/2023]
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20
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de Guise E, Alturki AY, Laguë-Beauvais M, LeBlanc J, Champoux MC, Couturier C, Anderson K, Lamoureux J, Marcoux J, Maleki M, Feyz M, Frasnelli J. Olfactory and executive dysfunctions following orbito-basal lesions in traumatic brain injury. Brain Inj 2015; 29:730-8. [DOI: 10.3109/02699052.2015.1004748] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- E. de Guise
- Neurology and Neurosurgery Department, McGill University Health Centre, Montreal, Quebec, Canada,
- Psychology Department, University of Montreal, Montreal, Quebec, Canada,
| | - A. Y. Alturki
- Neurology and Neurosurgery Department, McGill University Health Centre, Montreal, Quebec, Canada,
- Department of Neurosurgery, The National Neuroscience Institute, King Fahad Medical City, Riyadh, Saudi Arabia,
| | - M. Laguë-Beauvais
- Traumatic Brain Injury Program, McGill University Health Centre, Montreal, Quebec, Canada,
| | - J. LeBlanc
- Traumatic Brain Injury Program, McGill University Health Centre, Montreal, Quebec, Canada,
| | - M. C. Champoux
- Traumatic Brain Injury Program, McGill University Health Centre, Montreal, Quebec, Canada,
| | - C. Couturier
- Traumatic Brain Injury Program, McGill University Health Centre, Montreal, Quebec, Canada,
| | - K. Anderson
- Psychology Department, University of Montreal, Montreal, Quebec, Canada,
- Traumatic Brain Injury Program, McGill University Health Centre, Montreal, Quebec, Canada,
| | - J. Lamoureux
- Social and Preventive Medicine Department, University of Montreal, Montreal, Quebec, Canada,
| | - J. Marcoux
- Neurology and Neurosurgery Department, McGill University Health Centre, Montreal, Quebec, Canada,
| | - M. Maleki
- Neurology and Neurosurgery Department, McGill University Health Centre, Montreal, Quebec, Canada,
| | - M. Feyz
- Traumatic Brain Injury Program, McGill University Health Centre, Montreal, Quebec, Canada,
| | - J. Frasnelli
- Anatomy Department, Université du Quebec à Trois-Rivières, Trois-Rivières, Quebec, Canada, and
- Centre Avancé des Études sur le Sommeil, Hôpital Sacré-Coeur de Montréal, Montreal, Quebec, Canada
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Abstract
Obsessive compulsive disorder (OCD) and attention deficit hyperactivity disorder (ADHD) are two of the most common neuropsychiatric diseases in paediatric populations. The high comorbidity of ADHD and OCD with each other, especially of ADHD in paediatric OCD, is well described. OCD and ADHD often follow a chronic course with persistent rates of at least 40–50 %. Family studies showed high heritability in ADHD and OCD, and some genetic findings showed similar variants for both disorders of the same pathogenetic mechanisms, whereas other genetic findings may differentiate between ADHD and OCD. Neuropsychological and neuroimaging studies suggest that partly similar executive functions are affected in both disorders. The deficits in the corresponding brain networks may be responsible for the perseverative, compulsive symptoms in OCD but also for the disinhibited and impulsive symptoms characterizing ADHD. This article reviews the current literature of neuroimaging, neurochemical circuitry, neuropsychological and genetic findings considering similarities as well as differences between OCD and ADHD.
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