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https://www.readbyqxmd.com/read/28107668/neurotrophins-role-in-depressive-symptoms-and-executive-function-performance-association-analysis-of-nrn1-gene-and-its-interaction-with-bdnf-gene-in-a-non-clinical-sample
#1
C Prats, B Arias, G Ortet, M I Ibáñez, J Moya, E Pomarol-Clotet, L Fañanás, M Fatjó-Vilas
BACKGROUND: Neuritin-1 is a neurotrophic factor involved in synaptic plasticity that has been associated with depressive disorders, schizophrenia and cognitive performance. The study of genotype-phenotype relationships in healthy individuals is a useful framework to investigate the etiology of brain dysfunctions. We therefore aimed to investigate in a non-clinical sample whether NRN1 gene contributes to the psychopathological profile, with a particular focus on the clinical dimensions previously related to the NRN1 gene (i...
November 23, 2016: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28107344/psychotic-experiences-and-overhasty-inferences-are-related-to-maladaptive-learning
#2
Heiner Stuke, Hannes Stuke, Veith Andreas Weilnhammer, Katharina Schmack
Theoretical accounts suggest that an alteration in the brain's learning mechanisms might lead to overhasty inferences, resulting in psychotic symptoms. Here, we sought to elucidate the suggested link between maladaptive learning and psychosis. Ninety-eight healthy individuals with varying degrees of delusional ideation and hallucinatory experiences performed a probabilistic reasoning task that allowed us to quantify overhasty inferences. Replicating previous results, we found a relationship between psychotic experiences and overhasty inferences during probabilistic reasoning...
January 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28103961/a-review-of-altered-biochemistry-in-the-anterior-cingulate-cortex-of-first-episode-psychosis
#3
L Squarcina, J A Stanley, M Bellani, C A Altamura, P Brambilla
Relevant biochemicals of the brain can be quantified in vivo, non-invasively, using proton Magnetic Resonance Spectroscopy (¹H MRS). This includes metabolites associated with neural general functioning, energetics, membrane phospholipid metabolism and neurotransmission. Moreover, there is substantial evidence of implication of the frontal and prefrontal areas in the pathogenesis of psychotic disorders such as schizophrenia. In particular, the anterior cingulate cortex (ACC) plays an important role in cognitive control of emotional and non-emotional processes...
January 20, 2017: Epidemiology and Psychiatric Sciences
https://www.readbyqxmd.com/read/28103519/do-cognitive-schema-mediate-the-association-between-childhood-trauma-and-being-at-ultra-high-risk-for-psychosis
#4
E Appiah-Kusi, H L Fisher, N Petros, R Wilson, V Mondelli, P A Garety, P Mcguire, S Bhattacharyya
Exposure to childhood trauma has been associated with psychotic symptoms, being at ultra-high risk for psychosis (UHR), and psychotic disorders such as schizophrenia. Negative self-beliefs have been shown to partially mediate the relationship between childhood trauma and paranoia and have been shown to be characteristic of patients with psychosis. However, whether the association between childhood trauma and being at high risk of developing psychosis (e.g., UHR) and paranoia symptoms is mediated by altered cognitive schema is unknown and warrants investigation to inform preventive interventions...
January 6, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28103052/adjunctive-treatment-of-psychotic-disorders-with-micronutrients
#5
Lewis Mehl-Madrona, Barbara Mainguy
OBJECTIVE: To evaluate the effect of micronutrients (minerals and vitamins) on adult psychosis when added to conventional medications by using a placebo-controlled randomized design with a 1-month open-label run-in. DESIGN: Longitudinal comparison study following a randomized, controlled trial that had failed because participants declined to undergo randomization. Setting/Locations: Rural primary care and psychiatry clinic in northern New England (town of 16,000 people)...
January 19, 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/28102229/the-neurosteroidogenic-enzyme-5%C3%AE-reductase-mediates-psychotic-like-complications-of-sleep-deprivation
#6
Roberto Frau, Valentina Bini, Alessio Soggiu, Simona Scheggi, Alessandra Pardu, Silvia Fanni, Paola Roncada, Monica Puligheddu, Francesco Marrosu, Donatella Caruso, Paola Devoto, Marco Bortolato
Acute sleep deprivation (SD) can trigger or exacerbate psychosis- and mania-related symptoms; the neurobiological basis of these complications, however, remains elusive. Given the extensive involvement of neuroactive steroids in psychopathology, we hypothesized that the behavioral complications of SD may be contributed by 5α-reductase (5αR), the rate-limiting enzyme in the conversion of progesterone into the neurosteroid allopregnanolone. We first tested whether rats exposed to SD may exhibit brain-regional alterations in 5αR isoenzymes and neuroactive steroid levels; then, we assessed whether the behavioral and neuroendocrine alterations induced by SD may be differentially modulated by the administration of the 5αR inhibitor finasteride, as well as progesterone and allopregnanolone...
January 19, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28100210/prevalence-of-psychiatric-morbidity-in-a-community-sample-in-western-kenya
#7
Edith Kwobah, Steve Epstein, Ann Mwangi, Debra Litzelman, Lukoye Atwoli
BACKGROUND: About 25% of the worldwide population suffers from mental, neurological and substance use disorders but unfortunately, up to 75% of affected persons do not have access to the treatment they need. Data on the magnitude of the mental health problem in Kenya is scarce. The objectives of this study were to establish the prevalence and the socio-demographic factors associated with mental and substance use disorders in Kosirai division, Nandi County, Western Kenya. METHODS: This was a cross sectional descriptive study in which participants were selected by simple random sampling...
January 18, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28099526/executive-functioning-in-men-with-schizophrenia-and-substance-use-disorders-influence-of-lifetime-suicide-attempts
#8
Ana Adan, Maria Del Mar Capella, Gemma Prat, Diego A Forero, Silvia López-Vera, José Francisco Navarro
BACKGROUND: Lifetime suicide attempts in patients with comorbidity between psychotic disorders and Substance Use Disorder (SUD), known as dual diagnosis, was associated with a worse clinical and cognitive state, poor prognosis and premature death. However, to date no previous study has examined the cognitive performance of these patients considering as independent the presence or absence of lifetime suicide attempts. METHODS: We explore executive functioning differences between suicide attempters and non-attempters in dual schizophrenia (DS) patients and the possible related factors for both executive performance and current suicide risk...
2017: PloS One
https://www.readbyqxmd.com/read/28097648/a-systematic-review-and-meta-analysis-of-prospective-transition-from-major-depression-to-bipolar-disorder
#9
A Ratheesh, C Davey, S Hetrick, M Alvarez-Jimenez, C Voutier, A Bechdolf, P D McGorry, J Scott, M Berk, S M Cotton
OBJECTIVE: Some people with major depressive disorder (MDD) may be at a pre-onset stage for bipolar disorder (BD), where early identification or prevention efforts may be feasible. We aimed to identify rates and characteristics predictive of transition to BD in prospective follow-up studies of people with MDD. METHODS: Using a systematic search strategy, we identified studies with a diagnostic ascertainment of MDD and BD of an adequate standard, and where the minimum length of follow-up was 6 months...
January 18, 2017: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/28097491/small-interfering-rna-targeting-dickkopf-1-contributes-to-neuroprotection-after-intracerebral-hemorrhage-in-rats
#10
Zhihua Li, Xi Chen, Xiaoyang Zhang, Xiuhua Ren, Xuemei Chen, Jing Cao, Weidong Zang, Xianzhi Liu, Fuyou Guo
Excessive Dickkopf-1 (Dkk-1) plays a vital role in secondary brain injury following ischemic stroke and psychotic disease. However, it is unclear whether an increased expression of Dkk-1 occurred after intracerebral hemorrhage (ICH). The present study examined the potential role of Dkk-1 after ICH. ICH was induced by a single injection of autologous blood into the basal ganglia of rats. Dkk-1 protein levels in brain tissue and serum were detected by enzyme-linked immunosorbent assay after ICH. Rats were treated with small interfering RNA targeting Dkk-1 (siDkk-1) or vehicle following ICH...
January 17, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28096881/design-and-methodology-of-the-korean-early-psychosis-cohort-study
#11
Sung-Wan Kim, Bong Ju Lee, Jung Jin Kim, Je-Chun Yu, Kyu Young Lee, Seung-Hee Won, Seung-Hwan Lee, Seung-Hyun Kim, Shi Hyun Kang, Young-Chul Chung
The present study details the rationale and methodology of the Korean Early Psychosis Cohort Study (KEPS), which is a clinical cohort investigation of first episode psychosis patients from a Korean population. The KEPS is a prospective naturalistic observational cohort study that follows the participants for at least 2 years. This study includes patients between 18 and 45 years of age who fulfill the criteria for one of schizophrenia spectrum and other psychotic disorders according to the diagnostic criteria of DSM-5...
January 2017: Psychiatry Investigation
https://www.readbyqxmd.com/read/28096876/effectiveness-of-electroconvulsive-therapy-augmentation-on-clozapine-resistant-schizophrenia
#12
Hye Sung Kim, Se Hyun Kim, Nam Young Lee, Tak Youn, Jeoung Hyuk Lee, Seunghyun Chung, Yong Sik Kim, In Won Chung
OBJECTIVE: This retrospective case series study of the effectiveness of electroconvulsive therapy (ECT) augmentation on clozapine-resistant schizophrenia was conducted by EMR review. METHODS: Clozapine-resistance was defined as persistent psychotic symptoms despite at least 12 weeks of clozapine administration with blood levels over 350 ng/mL in order to rule out pseudo-resistance. Seven in-patients who were taking clozapine and treated with ECT were selected. We analyzed the psychopathology and subscales changed by ECT...
January 2017: Psychiatry Investigation
https://www.readbyqxmd.com/read/28096857/the-effect-of-fluphenazine-and-thioridazine-on-toxoplasma-gondii-in-vivo
#13
Mehrzad Saraei, Yosef Ghaderi, Tahereh Mosavi, Mojtaba Shahnazi, Marjan Nassiri-Asl, Hassan Jahanihashemi
BACKGROUND: Toxoplasma gondii is the most common parasite causing latent cerebral infections in human. It has been shown that some anti-psychotic drugs are able to inhibit the proliferation of the parasite in in vitro study. There is very limited data regarding the inhibitory effect of anti-psychotics on Toxoplasma in in vivo. In this study, we evaluated anti-Toxoplasma activity of fluphenazine and thioridazine drugs on T. gondii in mice. METHODS: Mice were divided into six groups: Control, sesame as vehicle, thioridazine 10 mg/kg, thioridazine 20 mg/kg, fluphenazine 0...
April 2016: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28095998/the-feasibility-and-clinical-benefits-of-improving-facial-affect-recognition-impairments-in-schizophrenia-systematic-review-and-meta-analysis
#14
REVIEW
Natalie Bordon, Suzanne O'Rourke, Paul Hutton
BACKGROUND: People diagnosed with schizophrenia have significant difficulty accurately recognising emotions expressed by others. This may generate anomalous experiences which, if misinterpreted, could contribute to experiences of social defeat, psychotic symptoms and reduced social functioning. It remains unclear whether this impairment is responsive to non-pharmacological intervention, or what the effect of modifying it is. METHODS: We did a systematic review and meta-analysis to examine whether and to what extent facial affect recognition impairments can be improved by psychological intervention and, if so, whether this leads to improvements in psychotic symptoms and social functioning...
January 14, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28095813/vocational-rehabilitation-for-adults-with-psychotic-disorders-in-a-scandinavian-welfare-society
#15
Erik Falkum, Ole Klungsøyr, June Ullevoldsæter Lystad, Helen Christine Bull, Stig Evensen, Egil W Martinsen, Svein Friis, Torill Ueland
BACKGROUND: This study examined the outcomes of a vocational rehabilitation program (The Job Management Program, JUMP) for persons with psychotic disorders based on close collaboration between health and welfare services. METHODS: Participants (N = 148) with broad schizophrenia spectrum disorders (age 18-65) were recruited from six counties in Norway. Three counties were randomized to vocational rehabilitation augmented with cognitive behaviour therapy (CBT), while the remaining three counties were randomized to vocational rehabilitation augmented with cognitive remediation (CR)...
January 17, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28094811/brain-connectivity-changes-occurring-following-cognitive-behavioural-therapy-for-psychosis-predict-long-term-recovery
#16
L Mason, E Peters, S C Williams, V Kumari
Little is known about the psychobiological mechanisms of cognitive behavioural therapy for psychosis (CBTp) and which specific processes are key in predicting favourable long-term outcomes. Following theoretical models of psychosis, this proof-of-concept study investigated whether the long-term recovery path of CBTp completers can be predicted by the neural changes in threat-based social affective processing that occur during CBTp. We followed up 22 participants who had undergone a social affective processing task during functional magnetic resonance imaging along with self-report and clinician-administered symptom measures, before and after receiving CBTp...
January 17, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28093569/translational-evaluation-of-translocator-protein-as-a-marker-of-neuroinflammation-in-schizophrenia
#17
T Notter, J M Coughlin, T Gschwind, U Weber-Stadlbauer, Y Wang, M Kassiou, A C Vernon, D Benke, M G Pomper, A Sawa, U Meyer
Positron emission tomography (PET) imaging with radiotracers that target translocator protein 18 kDa (TSPO) has become a popular approach to assess putative neuroinflammatory processes and associated microglia activation in psychotic illnesses. It remains unclear, however, whether TSPO imaging can accurately capture low-grade inflammatory processes such as those present in schizophrenia and related disorders. Therefore, we evaluated the validity of TSPO as a disease-relevant marker of inflammation using a translational approach, which combined neurodevelopmental and neurodegenerative mouse models with PET imaging in patients with recent-onset schizophrenia and matched controls...
January 17, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28092756/effects-of-assisted-outpatient-treatment-and-health-care-services-on-psychotic-symptoms
#18
Andres R Schneeberger, Christian G Huber, Undine E Lang, Kristina H Muenzenmaier, Dorothy Castille, Matthias Jaeger, Azizi Seixas, Julia Sowislo, Bruce G Link
RATIONALE: An ongoing debate concerns acceptability, benefits, and shortcomings of coercive treatment such as assisted outpatient treatment (AOT). The hypothesis that involuntary commitment to outpatient treatment may lead to a better clinical outcome for a subgroup of persons with severe mental illness (SMI) is controversial. Nonetheless, positive effects of AOT may be mediated by an increased availability of healthcare resources or increased service use. OBJECTIVE: The purpose of the present study is to evaluate the course of delusions, hallucinations, and negative symptoms among patients with SMI receiving AOT compared to patients receiving non-compulsory treatment (NCT)...
January 6, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28088223/predictors-of-long-term-use-of-psychiatric-services-of-patients-with-recent-onset-schizophrenia-12%C3%A2-years-follow-up
#19
Víðir Sigrúnarson, Rolf W Gråwe, Stian Lydersen, Gunnar Morken
BACKGROUND: The aim of study was to investigate predictors of long term use of psychiatric services of patients with recent-onset schizophrenia. METHODS: A cohort of 50 clinically stable patients with recent-onset schizophrenia was included in a randomized controlled trial comparing early integrated treatment with treatment as usual. Recent onset was defined as emergence of psychotic symptoms for the first time during the preceding 2 years. The follow up period was from the date of randomization and until 12 years after termination of treatment trial, 14 years forward...
January 14, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28081455/correlates-of-vitamin-d-in-psychotic-disorders-a-comprehensive-systematic-review
#20
James Adamson, John Lally, Fiona Gaughran, Amir Krivoy, Lauren Allen, Brendon Stubbs
People with psychosis have high prevalence of low vitamin D levels but the correlates and relevance of this deficiency are unclear. A systematic search of major databases from inception to 03/2016 was undertaken investigating correlates of vitamin D in people with psychosis. Data was summarised with a best evidence synthesis. Across 23 included studies (n=1770 psychosis, n=8171 controls) a mean difference in vitamin D levels between both groups of -11.14ng/ml±0.59 was found. 53 unique correlations between vitamin D and outcomes in people with psychosis were identified...
December 31, 2016: Psychiatry Research
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