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https://www.readbyqxmd.com/read/29332255/profiling-attention-and-cognition-enhancing-drugs-in-a-rat-touchscreen-based-continuous-performance-test
#1
Zhiyong Ding, Jordan W Brown, Lynne E Rueter, Eric G Mohler
RATIONALE: A novel rodent continuous performance test (CPT) was developed as one of the goals of the NEWMEDS (Novel Methods leading to New Medications in Depression and Schizophrenia) consortium to improve its translatability to the CPT test used in human subjects. OBJECTIVES: The objective of the study is to investigate the effects of attention and cognition enhancing drugs in rodent CPT. METHODS: A single cohort of rats were trained to asymptotic performance in the test...
January 13, 2018: Psychopharmacology
https://www.readbyqxmd.com/read/29332185/handedness-and-the-risk-of-glioma
#2
Briana Miller, Noah C Peeri, Louis Burt Nabors, Jordan H Creed, Zachary J Thompson, Carrie M Rozmeski, Renato V LaRocca, Sajeel Chowdhary, Jeffrey J Olson, Reid C Thompson, Kathleen M Egan
Gliomas are the most common type of malignant primary brain tumor and few risk factors have been linked to their development. Handedness has been associated with several pathologic neurological conditions such as schizophrenia, autism, and epilepsy, but few studies have evaluated a connection between handedness and risk of glioma. In this study, we examined the relationship between handedness and glioma risk in a large case-control study (1849 glioma cases and 1354 healthy controls) and a prospective cohort study (326,475 subjects with 375 incident gliomas)...
January 13, 2018: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29331354/specificity-in-etiology-of-subtypes-of-bipolar-disorder-evidence-from-a-swedish-population-based-family-study
#3
Jie Song, Ralf Kuja-Halkola, Arvid Sjölander, Sarah E Bergen, Henrik Larsson, Mikael Landén, Paul Lichtenstein
BACKGROUND: Uncertainty remains whether bipolar I disorder (BDI) and bipolar II disorder (BDII) differ etiologically. We used a population-based family sample to examine the etiological boundaries between BDI and BDII by assessing their familial aggregation/coaggregation and by assessing the coaggregation between them and schizophrenia, depression, attention-deficit/hyperactivity disorder, eating disorders, autism spectrum disorder, substance use disorders, anxiety disorders, and personality disorders...
November 20, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29326362/-18f-pbr111-pet-imaging-in-healthy-controls-and-schizophrenia-test-retest-reproducibility-and-quantification-of-neuroinflammation
#4
Julie Ottoy, Livia De Picker, Jeroen Verhaeghe, Steven Deleye, Leonie Wyffels, Lauren Kosten, Bernard Sabbe, Violette Coppens, Maarten Timmers, Luc Van Nueten, Sarah Ceyssens, Sigrid Stroobants, Manuel Morrens, Steven Staelens
Activated microglia express the translocator protein (TSPO) on the outer mitochondrial membrane. 18F-PBR111 is a second-generation positron emission tomography (PET) ligand that specifically binds the TSPO, allowing in-vivo visualization and quantification of neuroinflammation. The aim of this study is to evaluate if the test-retest variability of 18F-PBR111 in healthy controls is acceptable to detect a psychosis-associated neuroinflammatory signal in schizophrenia. Methods: Dynamic 90-min 18F-PBR111 scans were obtained in 17 healthy male controls (HC) and 11 male schizophrenia patients during a psychotic episode (SP)...
January 11, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29325726/quality-of-life-disparities-between-persons-with-schizophrenia-and-their-professional-caregivers-network-analysis-in-a-national-cohort
#5
Anat Rotstein, David Roe, Marc Gelkopf, Efrat Shadmi, Stephen Z Levine
BACKGROUND: Disparities between mental health patients and their professional caregivers in quality of life appraisals have been identified, however, the structure that such disparities assume is unknown. AIMS: To examine the network structure of quality of life appraisals and disparities using network analysis. METHODS: Participants were 1639 persons with schizophrenia using psychiatric rehabilitation services and their primary professional caregivers (N=582)...
January 8, 2018: Schizophrenia Research
https://www.readbyqxmd.com/read/29313167/prenatal-exposure-to-chernobyl-fallout-in-norway-neurological-and-developmental-outcomes-in-a-25-year-follow-up
#6
Rolv Terje Lie, Dag Moster, Per Strand, Allen James Wilcox
Ionizing radiation at high doses early in life may cause neurodevelopmental problems. Possible effects of lower doses are, however, controversial. We use carefully collected exposure data for Norway following the Chernobyl accident in April 1986 combined with population-based registries to assess long-term effects of fetal exposure on neurodevelopmental outcomes. Radiation doses were estimated for each Norwegian municipality for each calendar month from May 1986 to April 1989. We established a cohort of all Norwegian pregnancies during the three-year period of radiation measurement and compared them with appropriate unexposed groups...
January 8, 2018: European Journal of Epidemiology
https://www.readbyqxmd.com/read/29310919/increased-complications-for-schizophrenia-and-bipolar-disorder-patients-undergoing-total-joint-arthroplasty
#7
Michael M Kheir, You Na P Kheir, Timothy L Tan, Colin T Ackerman, Alexander J Rondon, Antonia F Chen
BACKGROUND: Although it has been shown that anxiety and depression are associated with increased complications after total joint arthroplasty (TJA), the outcomes of TJA in patients with a history of psychosis are unknown. This study evaluated the influence of bipolar and schizophrenic disorders on complications after TJA, particularly aseptic and septic revisions. METHODS: A retrospective review of 156 TJAs (125 primaries and 31 revisions) was performed at a single institution from 2000 to 2015...
December 14, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29301707/factors-associated-with-direct-health-care-costs-in-schizophrenia-results-from-the-face-sz-french-dataset
#8
Charles Laidi, Amélie Prigent, Alice Plas, Marion Leboyer, Guillaume Fond, Karine Chevreul
INTRODUCTION: There is a lack of data on health care consumption of patients suffering from schizophrenia, as well as on the related health care costs. Factors associated with health care costs have not been widely studied, whereas knowledge on this topic would allow identifying risk factors and delineating strategies to improve patients' health and follow-up, likely to also decrease health care costs. The aim of this study was to estimate the average direct health care cost of patients with schizophrenia in France and to identify the factors associated with this cost...
January 2018: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29298994/cost-effectiveness-of-hla-dqb1-hla-b-pharmacogenetic-guided-treatment-and-blood-monitoring-in-us-patients-taking-clozapine
#9
François R Girardin, Antoine Poncet, Arnaud Perrier, Nathalie Vernaz, Mark Pletscher, Caroline F Samer, Jeffrey A Lieberman, Jean Villard
Less than 1% of adult patients with schizophrenia taking clozapine develop agranulocytosis, and most of these cases occur within the first weeks of treatment. The human leukocyte antigen (HLA) region has been associated with genetic susceptibility to clozapine-induced agranulocytosis (single amino acid changes in HLA-DQB1 (126Q) and HLA-B (158T)). The current study aimed to evaluate the cost-effectiveness, from a healthcare provider's perspective, of an HLA genotype-guided approach in patients with treatment-resistant schizophrenia who were taking clozapine and to compare the results with the current absolute neutrophil count monitoring (ANCM) schemes used in the USA...
January 3, 2018: Pharmacogenomics Journal
https://www.readbyqxmd.com/read/29276411/the-use-of-random-effects-models-to-identify-health-care-center-related-characteristics-modifying-the-effect-of-antipsychotic-drugs
#10
Clementine Nordon, Constance Battin, Helene Verdoux, Josef Maria Haro, Mark Belger, Lucien Abenhaim, Tjeerd Pieter van Staa
Purpose: A case study was conducted, exploring methods to identify drugs effects modifiers, at a health care center level. Patients and methods: Data were drawn from the Schizophrenia Outpatient Health Outcome cohort, including hierarchical information on 6641 patients, recruited from 899 health care centers from across ten European countries. Center-level characteristics included the following: psychiatrist's gender, age, length of practice experience, practice setting and type, countries' Healthcare System Efficiency score, and psychiatrist density in the country...
2017: Clinical Epidemiology
https://www.readbyqxmd.com/read/29276352/pretreatment-serum-mcp-1-level-predicts-response-to-risperidone-in-schizophrenia
#11
Yezhe Lin, Yanmin Peng, Cuizhen Zhu, Yousong Su, Yuan Shi, Zhiguang Lin, Jinghong Chen, Donghong Cui
Background: Schizophrenia is a chronic debilitating disease. The pathogenesis and treatment may be associated with inflammatory cytokines. There are few studies focusing on the prediction of cytokines in response to antipsychotics. Aim: To investigate whether cytokines would predict response to antipsychotics. Methods: Cross-sectional and natural observational cohort studies were applied to:(1) compare the baseline levels of serum IL-1β, TNF-α and MCP-1 between schizophrenia (n=64) and healthy controls (n=53); (2) To investigate the impact of baseline cytokines to psychopathology following olanzapine and risperidone monotherapy...
October 25, 2017: Shanghai Archives of Psychiatry
https://www.readbyqxmd.com/read/29274735/neuroanatomical-heterogeneity-of-schizophrenia-revealed-by-semi-supervised-machine-learning-methods
#12
Nicolas Honnorat, Aoyan Dong, Eva Meisenzahl-Lechner, Nikolaos Koutsouleris, Christos Davatzikos
Schizophrenia is associated with heterogeneous clinical symptoms and neuroanatomical alterations. In this work, we aim to disentangle the patterns of neuroanatomical alterations underlying a heterogeneous population of patients using a semi-supervised clustering method. We apply this strategy to a cohort of patients with schizophrenia of varying extends of disease duration, and we describe the neuroanatomical, demographic and clinical characteristics of the subtypes discovered. METHODS: We analyze the neuroanatomical heterogeneity of 157 patients diagnosed with Schizophrenia, relative to a control population of 169 subjects, using a machine learning method called CHIMERA...
December 20, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/29274734/antipsychotics-and-mortality-in-a-nationwide-cohort-of-29-823-patients-with-schizophrenia
#13
Heidi Taipale, Ellenor Mittendorfer-Rutz, Kristina Alexanderson, Maila Majak, Juha Mehtälä, Fabian Hoti, Erik Jedenius, Dana Enkusson, Amy Leval, Jan Sermon, Antti Tanskanen, Jari Tiihonen
INTRODUCTION: It has remained controversial if antipsychotic treatment is associated with increased or decreased mortality among patients with schizophrenia, and if there are any clinically meaningful differences between specific agents and routes of administration. METHODS: We linked prospectively gathered nationwide register-based data during 2006-2013 to study all-cause mortality among all patients aged 16-64years with schizophrenia in Sweden (N=29,823 in total; N=4603 in the incident cohort)...
December 20, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/29248596/the-wonderland-of-neuronal-nicotinic-acetylcholine-receptors
#14
REVIEW
Daniel Bertrand, A V Terry
Nearly 30 years of experimental evidence supports the argument that ligands of nicotinic acetylcholine receptors (nAChRs) have potential as therapeutic agents. However, as in the famous Lewis Carroll novel "Alice in Wonderland", there have been many unexpected adventures along the pathway of development, and few nAChR ligands have been approved for any clinical condition to date with the exception of nicotine dependence. The recent failures of nAChR ligands in AD and schizophrenia clinical trials have reduced enthusiasm for this therapeutic strategy and many pharmaceutical companies have now abandoned this field of research...
December 14, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/29246661/a-quantitative-approach-to-neuropsychiatry-the-why-and-the-how
#15
REVIEW
Martien J Kas, Brenda Penninx, Bernd Sommer, Alessandro Serretti, Celso Arango, Hugh Marston
The current nosology of neuropsychiatric disorders allows for a pragmatic approach to treatment choice, regulation and clinical research. However, without a biological rationale for these disorders, drug development has stagnated. The recently EU-funded PRISM project aims to develop a quantitative biological approach to the understanding and classification of neuropsychiatric diseases to accelerate the discovery and development of better treatments. By combining clinical data sets from major worldwide disease cohorts and by applying innovative technologies to deeply phenotype stratified patient groups, we will define a set of quantifiable biological parameters for social withdrawal and cognitive deficits common to Schizophrenia (SZ), Major Depression (MD), and Alzheimer's Disease (AD)...
December 12, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29239291/the-impact-of-schizophrenia-and-mood-disorder-risk-alleles-on-emotional-problems-investigating-change-from-childhood-to-middle-age
#16
Lucy Riglin, Stephan Collishaw, Alexander Richards, Ajay K Thapar, Frances Rice, Barbara Maughan, Michael C O'Donovan, Anita Thapar
BACKGROUND: Previous studies find that both schizophrenia and mood disorder risk alleles contribute to adult depression and anxiety. Emotional problems (depression or anxiety) begin in childhood and show strong continuities into adult life; this suggests that symptoms are the manifestation of the same underlying liability across different ages. However, other findings suggest that there are developmental differences in the etiology of emotional problems at different ages. To our knowledge, no study has prospectively examined the impact of psychiatric risk alleles on emotional problems at different ages in the same individuals...
December 14, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/29237760/thorase-variants-are-associated-with-defects-in-glutamatergic-neurotransmission-that-can-be-rescued-by-perampanel
#17
George K E Umanah, Marco Pignatelli, Xiling Yin, Rong Chen, Joshua Crawford, Stewart Neifert, Leslie Scarffe, Adam A Behensky, Noah Guiberson, Melissa Chang, Erica Ma, Jin Wan Kim, Cibele C Castro, Xiaobo Mao, Li Chen, Shaida A Andrabi, Mikhail V Pletnikov, Ann E Pulver, Dimitrios Avramopoulos, Antonello Bonci, David Valle, Ted M Dawson, Valina L Dawson
The AAA+ adenosine triphosphatase (ATPase) Thorase plays a critical role in controlling synaptic plasticity by regulating the expression of surface α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptors (AMPARs). Bidirectional sequencing of exons of ATAD1, the gene encoding Thorase, in a cohort of patients with schizophrenia and healthy controls revealed rare Thorase variants. These variants caused defects in glutamatergic signaling by impairing AMPAR internalization and recycling in mouse primary cortical neurons...
December 13, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/29237066/early-motor-developmental-milestones-and-schizotypy-in-the-northern-finland-birth-cohort-study-1966
#18
Svetlana Filatova, Heli Koivumaa-Honkanen, Golam M Khandaker, Estelle Lowry, Tanja Nordström, Tuula Hurtig, Kristiina Moilanen, Jouko Miettunen
Delayed motor developmental milestones have been reported to be associated with schizophrenia in previous studies, but no study has examined the relationship between early motor developmental milestones and schizotypy. We have examined this relationship in a prospective birth cohort.In the Northern Finland Birth Cohort 1966, data on 9 early motor developmental milestones were collected prospectively from visits to child welfare centers, and data on adult schizotypy were collected through a questionnaire (N = 4557-4674)...
December 9, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/29236730/treatment-following-myocardial-infarction-in-patients-with-schizophrenia
#19
Rubina Attar, Martin Berg Johansen, Jan Brink Valentin, Jørgen Aagaard, Svend Eggert Jensen
BACKGROUND: A correlation between excess mortality from myocardial infarctions (MI) and schizophrenia has already been established. What remains unclear is whether the initial communication between the treating doctor and the corresponding patient contributes to this excess mortality. AIM: The aim of this study is to investigate whether a patient with schizophrenia receives the same offers for examination and treatment following a MI compared to a psychiatric healthy control (PHC)...
2017: PloS One
https://www.readbyqxmd.com/read/29230968/attenuated-first-rank-symptoms-and-conversion-to-psychosis-in-a-clinical-high-risk-cohort
#20
Francesca M Crump, Leigh Arndt, Margaux Grivel, Guillermo Horga, Cheryl M Corcoran, Gary Brucato, Ragy R Girgis
AIM: We sought to examine attenuated first-rank symptoms (FRS) and subcomponents of the Unusual Thought Content (P.1.) section of the Structured Interview for Psychosis-Risk Syndromes (SIPS) to investigate the robust relationship between total P.1. and conversion. We hypothesized that attenuated FRS would drive the association and, additionally, be most predictive of a schizophrenia diagnosis. METHOD: We assessed 189 clinical high-risk participants. Two independent raters separately scored attenuated FRS and each subcomponent of P...
December 12, 2017: Early Intervention in Psychiatry
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