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  1. Article ; Online: 18q Deletion Syndrome-Associated Schizophrenia: A Case Report.

    Colijn, Mark A / Crockford, David N

    Neuropsychobiology

    2024  , Page(s) 1–4

    Abstract: Introduction: 18q deletion syndrome is a rare genetic disorder characterized by various neurodevelopmental anomalies and medical issues. Although the occurrence of psychosis has been reported in a small number of cases, details regarding the nature of ... ...

    Abstract Introduction: 18q deletion syndrome is a rare genetic disorder characterized by various neurodevelopmental anomalies and medical issues. Although the occurrence of psychosis has been reported in a small number of cases, details regarding the nature of such symptoms and their response to treatment have not been described.
    Case presentation: We describe a 31-year-old male with a history of speech delays, autistic features, a tethered spinal cord, bilateral vertical talus, subaortic stenosis and aortic regurgitation, recurrent otitis media, mild hearing loss, and hypospadias, who experienced a first episode of psychosis in his late 20s. His psychotic symptoms included auditory hallucinations, various delusions, and disorganization of thought. Although his presentation is atypical in certain ways (e.g., exhibiting highly fluctuant symptoms), he nonetheless meets criteria for schizophrenia. Given his overall clinical picture, chromosomal microarray analysis was completed, which revealed a 19.78 Mb deletion at 18q21.32 from nucleotide 58,226,713 to 78,015,180 (GRCh37). Despite exhibiting a somewhat idiosyncratic response to numerous antipsychotic medications, he eventually achieved partial remission of symptoms with improved insight on relatively low dose oral aripiprazole therapy.
    Conclusion: This is the first in-depth description of 18q deletion syndrome-associated schizophrenia. While our patient's atypical presentation and idiosyncratic response to treatment may be mediated by his comorbid diagnosis of autism, his unusual psychiatric phenotype may alternatively be directly related to his underlying genetic disorder. The description of additional cases in the future will hopefully help clarify matters further.
    Language English
    Publishing date 2024-04-29
    Publishing country Switzerland
    Document type Case Reports
    ZDB-ID 442239-9
    ISSN 1423-0224 ; 0302-282X
    ISSN (online) 1423-0224
    ISSN 0302-282X
    DOI 10.1159/000538693
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Evidence base to support using prescribed psychostimulants to treat psychostimulant use disorder is limited.

    Bahji, Anees / Danilewitz, Marlon / George, Tony P / Dhaliwal, Arash / Crockford, David N

    CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne

    2023  Volume 195, Issue 39, Page(s) E1354

    MeSH term(s) Humans ; Central Nervous System Stimulants/therapeutic use ; Attention Deficit Disorder with Hyperactivity
    Chemical Substances Central Nervous System Stimulants
    Language English
    Publishing date 2023-10-10
    Publishing country Canada
    Document type Letter ; Comment
    ZDB-ID 215506-0
    ISSN 1488-2329 ; 0008-4409 ; 0820-3946
    ISSN (online) 1488-2329
    ISSN 0008-4409 ; 0820-3946
    DOI 10.1503/cmaj.149222-l
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Whole-genome sequencing analysis of clozapine-induced myocarditis.

    Narang, Ankita / Lacaze, Paul / Ronaldson, Kathlyn J / McNeil, John J / Jayaram, Mahesh / Thomas, Naveen / Sellmer, Rory / Crockford, David N / Stowe, Robert / Greenway, Steven C / Pantelis, Christos / Bousman, Chad A

    The pharmacogenomics journal

    2022  Volume 22, Issue 3, Page(s) 173–179

    Abstract: One of the concerns limiting the use of clozapine in schizophrenia treatment is the risk of rare but potentially fatal myocarditis. Our previous genome-wide association study and human leucocyte antigen analyses identified putative loci associated with ... ...

    Abstract One of the concerns limiting the use of clozapine in schizophrenia treatment is the risk of rare but potentially fatal myocarditis. Our previous genome-wide association study and human leucocyte antigen analyses identified putative loci associated with clozapine-induced myocarditis. However, the contribution of DNA variation in cytochrome P450 genes, copy number variants and rare deleterious variants have not been investigated. We explored these unexplored classes of DNA variation using whole-genome sequencing data from 25 cases with clozapine-induced myocarditis and 25 demographically-matched clozapine-tolerant control subjects. We identified 15 genes based on rare variant gene-burden analysis (MLLT6, CADPS, TACC2, L3MBTL4, NPY, SLC25A21, PARVB, GPR179, ACAD9, NOL8, C5orf33, FAM127A, AFDN, SLC6A11, PXDN) nominally associated (p < 0.05) with clozapine-induced myocarditis. Of these genes, 13 were expressed in human myocardial tissue. Although independent replication of these findings is required, our study provides preliminary insights into the potential role of rare genetic variants in susceptibility to clozapine-induced myocarditis.
    MeSH term(s) Antipsychotic Agents/adverse effects ; Clozapine/adverse effects ; Genome-Wide Association Study ; Humans ; Myocarditis/chemically induced ; Myocarditis/drug therapy ; Myocarditis/genetics ; Schizophrenia/drug therapy ; Schizophrenia/genetics
    Chemical Substances Antipsychotic Agents ; Clozapine (J60AR2IKIC)
    Language English
    Publishing date 2022-04-23
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2106831-8
    ISSN 1473-1150 ; 1470-269X
    ISSN (online) 1473-1150
    ISSN 1470-269X
    DOI 10.1038/s41397-022-00271-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Are There Therapeutic Benefits of Cannabinoid Products in Adult Mental Illness?

    Tibbo, Philip G / McKee, Kyle A / Meyer, Jeffrey H / Crocker, Candice E / Aitchison, Katherine J / Lam, Raymond W / Crockford, David N

    Canadian journal of psychiatry. Revue canadienne de psychiatrie

    2020  Volume 66, Issue 2, Page(s) 185–194

    Abstract: A position statement developed by the Canadian Psychiatric Association's (CPA) Research Committee and approved by the CPA's Board of Directors on May 13, 2020. ...

    Abstract A position statement developed by the Canadian Psychiatric Association's (CPA) Research Committee and approved by the CPA's Board of Directors on May 13, 2020.
    MeSH term(s) Adult ; Canada ; Cannabinoids ; Humans ; Mental Disorders/drug therapy ; Psychiatry ; Societies, Medical
    Chemical Substances Cannabinoids
    Keywords covid19
    Language English
    Publishing date 2020-09-11
    Publishing country United States
    Document type Journal Article
    ZDB-ID 304227-3
    ISSN 1497-0015 ; 0008-4824 ; 0706-7437
    ISSN (online) 1497-0015
    ISSN 0008-4824 ; 0706-7437
    DOI 10.1177/0706743720945525
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Are There Therapeutic Benefits of Cannabinoid Products in Adult Mental Illness?

    Tibbo, Philip G / McKee, Kyle A / Meyer, Jeffrey H / Crocker, Candice E / Aitchison, Katherine J / Lam, Raymond W / Crockford, David N

    Can J Psychiatry

    Abstract: A position statement developed by the Canadian Psychiatric Association's (CPA) Research Committee and approved by the CPA's Board of Directors on May 13, 2020. ...

    Abstract A position statement developed by the Canadian Psychiatric Association's (CPA) Research Committee and approved by the CPA's Board of Directors on May 13, 2020.
    Keywords covid19
    Publisher WHO
    Document type Article
    Note WHO #Covidence: #32911977
    Database COVID19

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  6. Article ; Online: The Coordinators of Psychiatric Education (COPE) Residency In-Training Exam: a preliminary psychometric assessment.

    Montgomery, Gregory P J / Crockford, David N / Hecker, Kent

    Academic psychiatry : the journal of the American Association of Directors of Psychiatric Residency Training and the Association for Academic Psychiatry

    2010  Volume 34, Issue 3, Page(s) 203–207

    Abstract: Objective: The Coordinators of Psychiatric Education (COPE) Residency In-Training Exam is a formative exam for Canadian psychiatric residents that was reconstructed using assessment best practices. An assessment of psychometric properties was ... ...

    Abstract Objective: The Coordinators of Psychiatric Education (COPE) Residency In-Training Exam is a formative exam for Canadian psychiatric residents that was reconstructed using assessment best practices. An assessment of psychometric properties was subsequently performed on the exam to ensure preliminary validity and reliability.
    Methods: An exam blueprint was developed based on the 2007 Royal College objectives for psychiatric training. A minimum pass level was established using a modified Angoff method. The exam was administered to all Canadian psychiatric residents in postgraduate years 2 to 5 with test reliability (Cronbach alpha) and item analysis performed. Exam validity was assessed through blueprint adherence and cross-year resident performance analysis.
    Results: Four hundred two exams were suitable for analysis. The overall mean score for all residents was 69.6% (SD=8.5) with significant differences in total scores between each of the postgraduate year groups, with consistently better performance with increasing time in residency. Cronbach alpha was 0.79.
    Conclusion: The present study provides preliminary support that the reconstructed COPE Residency In-Training Exam demonstrates adequate reliability and validity, including showing the capacity to discriminate between levels of training.
    MeSH term(s) Educational Measurement ; Humans ; Internship and Residency/organization & administration ; Psychiatry/education ; Psychiatry/organization & administration ; Psychometrics/methods
    Language English
    Publishing date 2010-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1045331-3
    ISSN 1545-7230 ; 1042-9670
    ISSN (online) 1545-7230
    ISSN 1042-9670
    DOI 10.1176/appi.ap.34.3.203
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Mirtazapine for alcohol dependence: a case report.

    Crockford, David N / White, William D

    The Journal of clinical psychiatry

    2005  Volume 66, Issue 4, Page(s) 540

    MeSH term(s) Alcoholism/epidemiology ; Alcoholism/prevention & control ; Alcoholism/psychology ; Antidepressive Agents, Tricyclic/pharmacology ; Antidepressive Agents, Tricyclic/therapeutic use ; Comorbidity ; Depressive Disorder/drug therapy ; Depressive Disorder/epidemiology ; Depressive Disorder/psychology ; Humans ; Male ; Mianserin/analogs & derivatives ; Mianserin/pharmacology ; Mianserin/therapeutic use ; Middle Aged ; Mirtazapine ; Receptors, Serotonin/drug effects ; Treatment Outcome
    Chemical Substances Antidepressive Agents, Tricyclic ; Receptors, Serotonin ; Mianserin (250PJI13LM) ; Mirtazapine (A051Q2099Q)
    Language English
    Publishing date 2005-05-01
    Publishing country United States
    Document type Case Reports ; Letter
    ZDB-ID 716287-x
    ISSN 1555-2101 ; 0160-6689
    ISSN (online) 1555-2101
    ISSN 0160-6689
    DOI 10.4088/jcp.v66n0420a
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Cue-induced brain activity in pathological gamblers.

    Crockford, David N / Goodyear, Bradley / Edwards, Jodi / Quickfall, Jeremy / el-Guebaly, Nady

    Biological psychiatry

    2005  Volume 58, Issue 10, Page(s) 787–795

    Abstract: Background: Previous studies using functional magnetic resonance imaging (fMRI) have identified differential brain activity in healthy subjects performing gambling tasks and in pathological gambling (PG) subjects when exposed to motivational and ... ...

    Abstract Background: Previous studies using functional magnetic resonance imaging (fMRI) have identified differential brain activity in healthy subjects performing gambling tasks and in pathological gambling (PG) subjects when exposed to motivational and emotional predecessors for gambling as well as during gambling or response inhibition tasks. The goal of the present study was to determine if PG subjects exhibit differential brain activity when exposed to visual gambling cues.
    Methods: Ten male DSM-IV-TR PG subjects and 10 matched healthy control subjects underwent fMRI during visual presentations of gambling-related video alternating with video of nature scenes.
    Results: Pathological gambling subjects and control subjects exhibited overlap in areas of brain activity in response to the visual gambling cues; however, compared with control subjects, PG subjects exhibited significantly greater activity in the right dorsolateral prefrontal cortex (DLPFC), including the inferior and medial frontal gyri, the right parahippocampal gyrus, and left occipital cortex, including the fusiform gyrus. Pathological gambling subjects also reported a significant increase in mean craving for gambling after the study. Post hoc analyses revealed a dissociation in visual processing stream (dorsal vs. ventral) activation by subject group and cue type.
    Conclusions: These findings may represent a component of cue-induced craving for gambling or conditioned behavior that could underlie pathological gambling.
    MeSH term(s) Adult ; Behavior, Addictive/diagnosis ; Behavior, Addictive/psychology ; Brain/physiology ; Brain Mapping ; Cerebral Cortex/physiology ; Cues ; Disruptive, Impulse Control, and Conduct Disorders/diagnosis ; Disruptive, Impulse Control, and Conduct Disorders/psychology ; Gambling/psychology ; Humans ; Imaging, Three-Dimensional ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Motivation ; Prefrontal Cortex/physiology ; Reward ; Videotape Recording ; Visual Perception/physiology
    Language English
    Publishing date 2005-11-15
    Publishing country United States
    Document type Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 209434-4
    ISSN 1873-2402 ; 0006-3223
    ISSN (online) 1873-2402
    ISSN 0006-3223
    DOI 10.1016/j.biopsych.2005.04.037
    Database MEDical Literature Analysis and Retrieval System OnLINE

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