journal
MENU ▼
Read by QxMD icon Read
search

Schizophrenia Bulletin

journal
https://www.readbyqxmd.com/read/28062652/the-processing-speed-impairment-in-psychosis-is-more-than-just-accelerated-aging
#1
Samuel R Mathias, Emma E M Knowles, Jennifer Barrett, Olivia Leach, Sebastiano Buccheri, Tamara Beetham, John Blangero, Russell A Poldrack, David C Glahn
Processing speed is impaired in patients with psychosis, and deteriorates as a function of normal aging. These observations, in combination with other lines of research, suggest that psychosis may be a syndrome of accelerated aging. But do patients with psychosis perform poorly on tasks of processing speed for the same reasons as older adults? Fifty-one patients with psychotic illnesses and 90 controls with similar mean IQ (aged 19-69 years, all African American) completed a computerized processing-speed task, reminiscent of the classic digit-symbol coding task...
January 6, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28057720/elevated-striatal-dopamine-function-in-immigrants-and-their-children-a-risk-mechanism-for-psychosis
#2
Alice Egerton, Oliver D Howes, Sylvain Houle, Kwame McKenzie, Lucia R Valmaggia, Michael R Bagby, Huai-Hsuan Tseng, Michael A P Bloomfield, Miran Kenk, Sagnik Bhattacharyya, Ivonne Suridjan, Chistopher A Chaddock, Toby T Winton-Brown, Paul Allen, Pablo Rusjan, Gary Remington, Andreas Meyer-Lindenberg, Philip K McGuire, Romina Mizrahi
Migration is a major risk factor for schizophrenia but the neurochemical processes involved are unknown. One candidate mechanism is through elevations in striatal dopamine synthesis and release. The objective of this research was to determine whether striatal dopamine function is elevated in immigrants compared to nonimmigrants and the relationship with psychosis. Two complementary case-control studies of in vivo dopamine function (stress-induced dopamine release and dopamine synthesis capacity) in immigrants compared to nonimmigrants were performed in Canada and the United Kingdom...
January 5, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28053019/biological-mechanisms-whereby-social-exclusion-may-contribute-to-the-etiology-of-psychosis-a-narrative-review
#3
Jean-Paul Selten, Jan Booij, Bauke Buwalda, Andreas Meyer-Lindenberg
The purpose of this review is to examine whether a contribution of social exclusion to the pathogenesis of psychosis is compatible with the dopamine hypothesis and/or the neurodevelopmental hypothesis. Humans experience social exclusion as defeating. An animal model for defeat is the resident-intruder paradigm. The defeated animal shows evidence of an increased sensitivity to amphetamine, increased dopamine release in the nucleus accumbens and prefrontal cortex, and increased firing of dopaminergic neurons in the ventral tegmental area...
January 3, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28049760/a-study-of-tnf-pathway-activation-in-schizophrenia-and-bipolar-disorder-in-plasma-and-brain-tissue
#4
Eva Zsuzsanna Hoseth, Thor Ueland, Ingrid Dieset, Rebecca Birnbaum, Joo Heon Shin, Joel Edward Kleinman, Thomas Michael Hyde, Ragni Helene Mørch, Sigrun Hope, Tove Lekva, Aurelija Judita Abraityte, Annika E Michelsen, Ingrid Melle, Lars Tjelta Westlye, Torill Ueland, Srdjan Djurovic, Pål Aukrust, Daniel R Weinberger, Ole Andreas Andreassen
OBJECTIVE: A proinflammatory imbalance in the tumor necrosis factor (TNF) system may contribute to the pathogenesis of schizophrenia (SCZ) and bipolar disorders (BDs) and related comorbidities. We investigated the relative distribution of TNF-related molecules in blood and dorsolateral prefrontal cortex (DLPFC) in these disorders. METHOD: We measured plasma levels of TNF, soluble TNF receptor 1 (sTNFR1), soluble TNF receptor 2 (sTNFR2), and a disintegrin and metalloprotease-17 (ADAM17) using enzyme immunoassays and calculated the TNF/sTNFRs ratio (TNF/sTNFR1+sTNFR2) in a sample of 816 SCZ and BD spectrum patients and 624 healthy controls (HCs)...
January 3, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28049759/psychosis-as-a-barrier-to-the-expression-of-sexuality-and-intimacy-an-environmental-risk
#5
José de Jager, Edward McCann
People diagnosed with schizophrenia and related psychotic disorders often have unmet needs around sexuality and intimacy issues. This can impact negatively upon a person's recovery and the need to lead a fulfilling and satisfying life. The aim of the current review was to explore the available qualitative literature that addressed sexuality and intimacy issues published between the years 2006 and 2016. Records were screened for eligibility. Finally, 56 studies that addressed the aims were included in the review...
January 3, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28044008/immediate-vs-gradual-discontinuation-in-antipsychotic-switching-a-systematic-review-and-meta-analysis
#6
Hiroyoshi Takeuchi, Navot Kantor, Hiroyuki Uchida, Takefumi Suzuki, Gary Remington
BACKGROUND: Antipsychotic switching is routine in clinical practice, although it remains unclear which is the preferable switching method: immediate discontinuation of the current antipsychotic or a gradual tapering approach. The first strategy has been implicated in rebound/withdrawal symptoms and emergence/exacerbation of symptoms, whereas the gradual approach is thought to pose a risk of additive or synergistic side effects if employed in the context of a crossover approach. METHODS: MEDLINE, Embase, and Cochrane Central Register of Controlled Trials were systematically searched...
January 1, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28039421/what-is-an-attenuated-psychotic-symptom-on-the-importance-of-the-context
#7
Paolo Fusar-Poli, Andrea Raballo, Josef Parnas
Attenuated psychotic symptoms (APS) are the key criteria to identify the individuals at enhanced risk of developing psychotic disorders. Competing clinicians-rated or self-rated psychometric instruments can also be used to detect APS, which makes it difficult to interpret their actual clinical significance. This article summarizes the empirical differences between the clinicians-rated and self-rated interviews and explores the impact of the context (referral pathways, settings, and assessment procedures) on the clinical significance of the APS...
December 30, 2016: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28039422/the-search-for-environmental-mechanisms-underlying-the-expression-of-psychosis-introduction
#8
Jim van Os, Ulrich Reininghaus, Andreas Meyer-Lindenberg
In this themed issue, a number of articles are presented that investigate environmental mechanisms in psychotic disorder. Below, we describe some of the challenges associated with this research, in terms of phenotypic definition, the nature of environmental impact and associated design and measurement issues.
December 29, 2016: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28008073/surviving-the-voices
#9
Jason Jepson
No abstract text is available yet for this article.
December 22, 2016: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28008072/my-relationship-with-my-caregivers
#10
Jason A Jepson
No abstract text is available yet for this article.
December 22, 2016: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28008071/distinct-patterns-of-cerebral-cortical-thinning-in-schizophrenia-a-neuroimaging-data-driven-approach
#11
Genichi Sugihara, Naoya Oishi, Shuraku Son, Manabu Kubota, Hidehiko Takahashi, Toshiya Murai
Schizophrenia is an etiologically and clinically heterogeneous disorder. Although neuroimaging studies have revealed brain alterations in schizophrenia, most studies have assumed that the disorder is a single entity, neglecting the diversity of alterations observed in the disorder. The current study sought to explore the distinct patterns of altered cortical thickness in patients with schizophrenia and healthy individuals using a data-driven approach. Unsupervised clustering using self-organizing maps followed by a K-means algorithm was applied to regional cortical thickness data in 108 schizophrenia patients and 121 healthy controls...
December 22, 2016: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28003469/mistakes-i-have-made-in-my-research-career
#12
Robin M Murray
No abstract text is available yet for this article.
December 21, 2016: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28003468/the-clinical-features-of-paranoia-in-the-20th-century-and-their-representation-in-diagnostic-criteria-from-dsm-iii-through-dsm-5
#13
Kenneth S Kendler
This review traces, through psychiatric textbooks, the history of the Kraepelinian concept of paranoia in the 20th century and then relates the common reported symptoms and signs to the diagnostic criteria for paranoia/delusional disorder in DSM-III through DSM-5. Clinical descriptions of paranoia appearing in 10 textbooks, published 1899 to 1970, revealed 11 prominent symptoms and signs reported by 5 or more authors. Three symptoms (systematized delusions, minimal hallucinations, and prominent ideas of reference) and 2 signs (chronic course and minimal affective deterioration) were reported by 8 or 9 of the authors...
December 21, 2016: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28003467/prefrontal-cortex-dysfunction-increases-susceptibility-to-schizophrenia-like-changes-induced-by-adolescent-stress-exposure
#14
Felipe V Gomes, Anthony A Grace
Stress during adolescence is a risk factor for schizophrenia, and medial prefrontal cortex (mPFC) dysfunction is proposed to interfere with stress control, increasing the susceptibility to stress. We evaluated the impact of different stressful events during adolescence (restraint stress [RS], footshock [FS], or the combination of FS and RS) on behaviors correlated with schizophrenia in rats as adults. At adulthood, animals were tested for anxiety responses (elevated plus-maze), cognitive function (novel-object recognition test) and dopamine (DA) system responsivity (locomotor response to amphetamine and DA neuron activity in the ventral tegmental area (VTA) using in vivo electrophysiology)...
December 21, 2016: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/27986902/reducing-voices-by-direct-dialogue
#15
Mark Ellerby
No abstract text is available yet for this article.
December 16, 2016: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/27884931/mild-depressive-symptoms-mediate-the-impact-of-childhood-trauma-on-long-term-functional-outcome-in-early-psychosis-patients
#16
Luis Alameda, Philippe Golay, Philipp S Baumann, Pierre Progin, Nadir Mebdouhi, Julien Elowe, Carina Ferrari, Kim Q Do, Philippe Conus
INTRODUCTION: The mechanism linking childhood trauma (CT) to the functional deficits observed in early psychosis (EP) patients is as yet unknown. We aim to examine the potential mediating effect of depressive symptoms in this well-established association. METHODS: Two hundred nine EP subjects aged 18-35 were assessed for functioning and psychopathology after 2, 6, 12, 18, 24, 30, and 36 months of treatment. Patients were classified into early trauma if they had faced at least one experience of abuse (physical, sexual, or emotional) or neglect (physical or emotional) before age 12, and late trauma if the exposure had occurred between ages 12 and 16...
November 24, 2016: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/27872269/behavioral-biomarkers-of-schizophrenia-in-high-drinker-rats-a-potential-endophenotype-of-compulsive-neuropsychiatric-disorders
#17
Silvia V Navarro, Roberto Alvarez, M Teresa Colomina, Fernando Sanchez-Santed, Pilar Flores, Margarita Moreno
Psychogenic polydipsia, which is compulsive, non-regulatory fluid consumption, is present in 6%-20% of chronic psychiatric patients and frequently associated with the schizophrenia diagnosis. In the present study, we investigated the relation between schizophrenia-like symptoms and biomarkers with a compulsive drinking behavior phenotype in rats. Rats that were selected for low drinking vs high drinking behavior following schedule-induced polydipsia (SIP) were assessed in a latent inhibition (LI) paradigm using tone and electrical foot shock and in a spatial reversal learning task to evaluate behavioral inflexibility...
November 21, 2016: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/27872268/consistent-functional-connectivity-alterations-in-schizophrenia-spectrum-disorder-a-multisite-study
#18
Kristina C Skåtun, Tobias Kaufmann, Nhat Trung Doan, Dag Alnæs, Aldo Córdova-Palomera, Erik G Jönsson, Helena Fatouros-Bergman, Lena Flyckt, Ingrid Melle, Ole A Andreassen, Ingrid Agartz, Lars T Westlye
Schizophrenia (SZ) is a severe mental illness with high heritability and complex etiology. Mounting evidence from neuroimaging has implicated disrupted brain network connectivity in the pathophysiology. However, previous findings are inconsistent, likely due to a combination of methodological and clinical variability and relatively small sample sizes. Few studies have used a data-driven approach for characterizing pathological interactions between regions in the whole brain and evaluated the generalizability across independent samples...
November 21, 2016: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/27872265/disclosing-my-diagnosis
#19
Steve Colori
No abstract text is available yet for this article.
November 21, 2016: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/27872263/isolation-and-intellect-a-letter-and-selected-works-by-walter-k-delbridge
#20
Walter K Delbridge, Kate Tucker
No abstract text is available yet for this article.
November 21, 2016: Schizophrenia Bulletin
journal
journal
22417
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"