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https://www.readbyqxmd.com/read/28936192/the-intricate-relationship-between-psychotic-like-experiences-and-associated-subclinical-symptoms-in-healthy-individuals
#1
Lui Unterrassner, Thomas A Wyss, Diana Wotruba, Helene Haker, Wulf Rössler
The interplay between subclinical psychotic, negative, and affective symptoms has gained increased attention regarding the etiology of psychosis spectrum and other mental disorders. Importantly, research has tended to not differentiate between different subtypes of psychotic-like experiences (PLE) although they may not have the same significance for mental health. In order to gain information on the subclinical interplay between specific PLE and other symptoms as well as the significance of PLE for mental health, we investigated their specific associations in 206 healthy individuals (20-60 years, 73 females) using correlational and linear regression analyses...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28931092/the-genome-wide-associated-candidate-gene-znf804a-and-psychosis-proneness-evidence-of-sex-modulated-association
#2
Marta de Castro-Catala, Aurea Mora-Solano, Thomas R Kwapil, Paula Cristóbal-Narváez, Tamara Sheinbaum, Anna Racioppi, Neus Barrantes-Vidal, Araceli Rosa
BACKGROUND: The Zinc finger protein 804A (ZNF804A) is a promising candidate gene for schizophrenia and the broader psychosis phenotype that emerged from genome-wide association studies. It is related to neurodevelopment and associated to severe symptoms of schizophrenia and alterations in brain structure, as well as positive schizotypal personality traits in non-clinical samples. Moreover, a female-specific association has been observed between ZNF804A and schizophrenia. AIM: The present study examined the association of two ZNF804A polymorphisms (rs1344706 and rs7597593) with the positive dimension of schizotypy and psychotic-like experiences in a sample of 808 non-clinical subjects...
2017: PloS One
https://www.readbyqxmd.com/read/28899612/the-schizotypal-personality-questionnaire-brief-lacks-measurement-invariance-across-three-countries
#3
Shujuan Liu, David Mellor, Mathew Ling, José L Saiz, Eugenia V Vinet, Xiaoyan Xu, Solomon Renati, Linda K Byrne
The Schizotypal Personality Questionnaire-Brief (SPQ-B) is a commonly-used tool for measuring schizotypal personality traits and due to its wide application, its cross-cultural validity is of interest. Previous studies suggest that the SPQ-B either has a three- or four-factor structure, but the majority of studies have been conducted in Western contexts and little is known about the psychometric properties of the scale in other populations. In this study factorial invariance testing across three cultural contexts-Australia, China and Chile was conducted...
September 6, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28884713/-mental-disorders-in-patients-with-breast-cancer-a-differentiated-approach-to-the-study-of-nozogeny
#4
O V Shushpanova
AIM: To study mental disorders in patients with breast cancer (BC) at different stages of the disease taking into account premorbid characteristics and psychosomatic correlations in their development. MATERIAL AND METHODS: The study included 82 patients with histologically confirmed BC. The first group consisted of 30 patients (mean age 49.7±11.1 years) with the first established diagnosis of BC and mental disorders caused by somatic disease (ICD-10 F40-F48, stress-related neurotic and somatoform disorders)...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28878159/connecting-the-dots-between-schizotypal-symptoms-and-social-anxiety-in-youth-with-an-extra-x-chromosome-a-mediating-role-for-catastrophizing
#5
Anne C Miers, Tim Ziermans, Sophie van Rijn
Youth with an extra X chromosome (47, XXY & 47, XXX) display higher levels of schizotypal symptoms and social anxiety as compared to typically developing youth. It is likely that the extra X chromosome group is at-risk for clinical levels of schizotypy and social anxiety. Hence, this study investigated how schizotypal and social anxiety symptoms are related and mechanisms that may explain their association in a group of 38 children and adolescents with an extra X chromosome and a comparison group of 109 typically developing peers (8-19 years)...
September 6, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28864974/oxytocin-and-schizophrenia-spectrum-disorders
#6
Ulrich Ettinger, René Hurlemann, Raymond C K Chan
In this chapter, we present an overview of studies of oxytocin (OXT) in schizophrenia and the schizophrenia spectrum. We first outline the current state of pharmacological treatment of the symptoms of schizophrenia and point to unmet clinical needs. These relate particularly to the debilitating negative symptoms and social cognitive deficits that are frequently observed in patients suffering from schizophrenia. We argue that new treatments are needed to alleviate these impairments. As OXT has been proposed and investigated as a putative treatment, we will then summarise evidence from studies in patients with schizophrenia that have investigated the effects of OXT at several levels, i...
September 2, 2017: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/28861339/spatio-temporal-source-cluster-analysis-reveals-fronto-temporal-auditory-change-processing-differences-within-a-shared-autistic-and-schizotypal-trait-phenotype
#7
Talitha C Ford, Will Woods, David P Crewther
Social Disorganisation (SD) is a shared autistic and schizotypal phenotype that is present in the subclinical population. Auditory processing deficits, particularly in mismatch negativity/field (MMN/F) have been reported across both spectrum disorders. This study investigates differences in MMN/F cortical spatio-temporal source activity between higher and lower quintiles of the SD spectrum. Sixteen low (9 female) and 19 high (9 female) SD subclinical adults (18-40years) underwent magnetoencephalography (MEG) during an MMF paradigm where standard tones (50ms) were interrupted by infrequent duration deviants (100ms)...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28843155/do-complaints-of-everyday-cognitive-failures-in-high-schizotypy-relate-to-emotional-working-memory-deficits-in-the-lab
#8
Nicole Carrigan, Emma Barkus, Adriel Ong, Maryann Wei
BACKGROUND: Individuals high on schizotypy complain of increased cognitive failures in everyday life. However, the neuropsychological performance of this group does not consistently indicate underlying ability deficits. It is possible that current neuropsychological tests lack ecological validity. Given the increased affective reactivity of high schizotypes, they may be more sensitive to emotional content interfering with cognitive ability. This study sought to explore whether an affective n-back working memory task would elicit impaired performance in schizotypy, echoing complaints concerning real world cognition...
July 5, 2017: Comprehensive Psychiatry
https://www.readbyqxmd.com/read/28835108/icd-11-and-dsm-5-personality-trait-domains-capture-categorical-personality-disorders-finding-a-common-ground
#9
Bo Bach, Martin Sellbom, Mathias Skjernov, Erik Simonsen
OBJECTIVE: The five personality disorder trait domains in the proposed International Classification of Diseases, 11th edition and the Diagnostic and Statistical Manual of Mental Disorders, 5th edition are comparable in terms of Negative Affectivity, Detachment, Antagonism/Dissociality and Disinhibition. However, the International Classification of Diseases, 11th edition model includes a separate domain of Anankastia, whereas the Diagnostic and Statistical Manual of Mental Disorders, 5th edition model includes an additional domain of Psychoticism...
August 1, 2017: Australian and New Zealand Journal of Psychiatry
https://www.readbyqxmd.com/read/28831617/hiv-prevalence-among-hospitalized-patients-at-the-main-psychiatric-referral-hospital-in-botswana
#10
Philip R Opondo, Ari R Ho-Foster, James Ayugi, Bechedza Hatitchki, Margo Pumar, Warren B Bilker, Michael E Thase, John B Jemmott, Michael B Blank, Dwight L Evans
We examined HIV prevalence among patients 18-49 year olds admitted to a psychiatric hospital in Botswana in 2011 and 2012. The retrospective study analyzed females (F) and males (M) separately, comparing proportions with Chi square test and continuous variables with Wilcoxon rank-sum test, assessing significance at the 5% level. HIV seroprevalence among hospitalized psychiatric patients was much more common among females (53%) compared with males (19%) (p < 0.001). These women also appeared more vulnerable to infection compared with females in the general population (29%) (p < 0...
August 22, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28797561/self-reported-psychosis-like-experiences-in-patients-with-mood-disorders
#11
I Baryshnikov, J Suvisaari, K Aaltonen, M Koivisto, T Melartin, P Näätänen, K Suominen, B Karpov, M Heikkinen, J Oksanen, T Paunio, G Joffe, E Isometsä
BACKGROUND: Self-reported psychosis-like experiences (PEs) may be common in patients with mood disorders, but their clinical correlates are not well known. We investigated their prevalence and relationships with self-reported symptoms of depression, mania, anxiety, borderline (BPD) and schizotypal (SPD) personality disorders among psychiatric patients with mood disorders. METHODS: The Community Assessment of Psychic Experiences (CAPE-42), Mood Disorder Questionnaire (MDQ), McLean Screening Instrument (MSI), The Beck Depressive Inventory (BDI), Overall Anxiety Severity and Impairment Scale (OASIS) and Schizotypal Personality Questionnaire-Brief form (SPQ-B) were filled in by patients with mood disorders (n=282) from specialized care...
February 3, 2017: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/28794973/increased-glutamate-gaba-ratio-in-a-shared-autistic-and-schizotypal-trait-phenotype-termed-social-disorganisation
#12
Talitha C Ford, Richard Nibbs, David P Crewther
Autism and schizophrenia are multi-dimensional spectrum disorders that have substantial phenotypic overlap. This overlap is readily identified in the non-clinical population, and has been conceptualised as Social Disorganisation (SD). This study investigates the balance of excitatory glutamate and inhibitory γ-aminobutyric acid (GABA) concentrations in a non-clinical sample with high and low trait SD, as glutamate and GABA abnormalities are reported across the autism and schizophrenia spectrum disorders. Participants were 18 low (10 females) and 19 high (9 females) SD scorers aged 18 to 40 years who underwent (1)H-MRS for glutamate and GABA+macromolecule (GABA+) concentrations in right and left hemisphere superior temporal (ST) voxels...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28760538/schizotypy-is-associated-with-reduced-mnemonic-precision-in-visual-working-memory
#13
Weizhen Xie, Marcus Cappiello, Hyung-Bum Park, Patricia Deldin, Raymond C K Chan, Weiwei Zhang
BACKGROUND: Working memory (WM) maintains a limited amount of information over a short period of time at the service of other ongoing mental activities. Deficits in this function are often observed in schizophrenia spectrum disorders. The present study examined whether self-report schizotypy was associated with the qualitative, quantitative, or both aspects of visual WM and whether these impairments could be accounted for by sensory memory deficits and/or depressed mood in a group of non-clinical, medication-naïve participants...
July 28, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28759626/glutamate-gaba-ratio-is-associated-with-the-psychosocial-domain-of-autistic-and-schizotypal-traits
#14
Talitha C Ford, Richard Nibbs, David P Crewther
BACKGROUND: The autism and schizophrenia spectra overlap to a large degree in the social and interpersonal domains. Similarly, abnormal excitatory glutamate and inhibitory γ-aminobutyric acid (GABA) neurotransmitter concentrations have been reported for both spectra, with the interplay of these neurotransmitters important for cortical excitation to inhibition regulation. This study investigates whether these neurotransmitter abnormalities are specific to the shared symptomatology, and whether the degree of abnormality increases with increasing symptom severity...
2017: PloS One
https://www.readbyqxmd.com/read/28758885/dimensional-traits-of-schizotypy-associated-with-glycine-receptor-glra1-polymorphism-an-exploratory-candidate-gene-association-study
#15
Anvi K Vora, Amanda M Fisher, Antonia S New, Erin A Hazlett, Margaret McNamara, Qiaoping Yuan, Zhifeng Zhou, Colin Hodgkinson, David Goldman, Larry J Siever, Panos Roussos, M Mercedes Perez-Rodriguez
Schizotypy captures the underlying genetic vulnerability to schizophrenia. However, the genetic underpinnings of schizotypy remain unexplored. The authors examined the relationship between single nucleotide polymorphisms (SNPs) and schizotypy. A sample of 137 subjects (43 healthy controls, 34 subjects with schizotypal personality disorder [SPD], 32 with borderline personality disorder, and 25 with other personality disorders) completed the Schizotypal Personality Questionnaire (SPQ). Subjects were genotyped using a custom array chip...
July 31, 2017: Journal of Personality Disorders
https://www.readbyqxmd.com/read/28758884/clinical-characteristics-of-comorbid-narcissistic-personality-disorder-in-patients-with-borderline-personality-disorder
#16
Susanne Hörz-Sagstetter, Diana Diamond, John F Clarkin, Kenneth N Levy, Michael Rentrop, Melitta Fischer-Kern, Nicole M Cain, Stephan Doering
This study examines psychopathology and clinical characteristics of patients with borderline personality disorder (BPD) and comorbid narcissistic personality disorder (NPD) from two international randomized controlled trials. From a combined sample of 188 patients with BPD, 25 also fulfilled criteria for a comorbid diagnosis of NPD according to DSM-IV. The BPD patients with comorbid NPD, compared to the BPD patients without comorbid NPD, showed significantly more BPD criteria (M = 7.44 vs. M = 6.55, p < ...
July 31, 2017: Journal of Personality Disorders
https://www.readbyqxmd.com/read/28755613/dsm-5-cannabis-use-disorder-in-the-national-epidemiologic-survey-on-alcohol-and-related-conditions-iii-gender-specific-profiles
#17
Bradley T Kerridge, Roger Pickering, Patricia Chou, Tulshi D Saha, Deborah S Hasin
OBJECTIVE: The objective of this study was to present current information on the prevalence, correlates, comorbidity and quality of life among men and women with cannabis use disorder (CUD). METHODS: In 2012-2013, 36,309 respondents ≥18years old participated in face-to-face interviews in the National Epidemiologic Survey on Alcohol and Related Conditions-III. RESULTS: Prevalence of 12-month CUD was greater among men (3.5%) than women (1...
July 14, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28750214/childhood-trauma-is-not-a-confounder-of-the-overlap-between-autistic-and-schizotypal-traits-a-study-in-a-non-clinical-adult-sample
#18
Jing-Bo Gong, Ya Wang, Simon S Y Lui, Eric F C Cheung, Raymond C K Chan
Childhood trauma has been shown to be a robust risk factor for mental disorders, and may exacerbate schizotypal traits or contribute to autistic trait severity. However, little is known whether childhood trauma confounds the overlap between schizotypal traits and autistic traits. This study examined whether childhood trauma acts as a confounding variable in the overlap between autistic and schizotypal traits in a large non-clinical adult sample. A total of 2469 participants completed the Autism Spectrum Quotient (AQ), the Schizotypal Personality Questionnaire (SPQ), and the Childhood Trauma Questionnaire-Short Form...
July 17, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28744234/on-hearing-voices-and-seeing-things-probing-hallucination-predisposition-in-a-portuguese-nonclinical-sample-with-the-launay-slade-hallucination-scale-revised
#19
Paula Castiajo, Ana P Pinheiro
The experience of hallucinations is a hallmark of psychotic disorders, but they are also present in other psychiatric and medical conditions, and may be reported in nonclinical individuals. Despite the increased number of studies probing the incidence of nonclinical hallucinations, the underlying phenomenological characteristics are still poorly understood. This study aimed to examine the psychometrics proprieties of the Portuguese adaptation of the 16-item Launay-Slade Hallucinations Scale (LSHS), the phenomenological characteristics of nonclinical hallucinatory experiences in a Portuguese sample, and the relationship between clinical symptoms and hallucination predisposition...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28740822/neurological-soft-signs-effects-of-trait-schizotypy-psychological-distress-and-auditory-hallucination-predisposition
#20
Saskia de Leede-Smith, Steven Roodenrys, Lauren Horsley, Shannen Matrini, Erin Mison, Emma Barkus
Schizotypy is regarded as a trait vulnerability for psychotic disorders, yet alone is insufficient for development of a diagnosable disorder. Additional symptoms and psychological distress are necessary for help seeking and transition from an at risk mental state to a clinical diagnosis. The present study investigated the interaction between trait schizotypy, state auditory verbal hallucination (AVH) predisposition, distress and handedness for the expression of neurological soft signs (NSS), a neurodevelopmental vulnerability factor for psychosis...
March 2017: Schizophrenia Research. Cognition
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