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https://www.readbyqxmd.com/read/29150991/population-based-differences-in-immune-system-response-contribute-to-an-increased-risk-of-schizophrenia-in-african-migrants
#1
Milica J Nesic, Nadja P Maric
Among the highest incidences of schizophrenia is the one documented in second-generation migrants of African descent in the Western countries. Interestingly, people of African and European ancestry demonstrate significant genetic-based differences in immune system regulation and response. As a result, the pro-inflammatory phenotype is more pronounced in people of African descent than it is in Europeans. At the same time, the role of the immune system in the etiology of schizophrenia is gaining increased recognition...
November 18, 2017: Reviews in the Neurosciences
https://www.readbyqxmd.com/read/29150900/genetic-overlap-between-epilepsy-and-schizophrenia-evidence-from-cross-phenotype-analysis-in-hong-kong-chinese-population
#2
Hongsheng Gui, Miaoxin Li, Pak C Sham, Larry Baum, Patrick Kwan, Stacey S Cherny
Epilepsy and schizophrenia are common and typical neurological or mental illness respectively, and sometimes they comorbid in the same patients, however the underlying genetic relationship between the two brain diseases is still not fully understood. To investigate the possible genetic contribution to their comorbidity, we performed polygenic risk score (PRS) analyses and genetic correlation estimation so as to identify the overall genetic overlap between the two diseases. The global schizophrenia PRS is strongly associated with schizophrenia phenotype in Hong Kong population (odds ratio = 1...
November 17, 2017: American Journal of Medical Genetics. Part B, Neuropsychiatric Genetics
https://www.readbyqxmd.com/read/29148569/exome-sequence-analysis-and-follow-up-genotyping-implicates-rare-ulk1-variants-to-be-involved-in-susceptibility-to-schizophrenia
#3
Mariam M Al Eissa, Alessia Fiorentino, Sally I Sharp, Niamh L O'Brien, Kate Wolfe, Giovanni Giaroli, David Curtis, Nicholas J Bass, Andrew McQuillin
Schizophrenia (SCZ) is a severe, highly heritable psychiatric disorder. Elucidation of the genetic architecture of the disorder will facilitate greater understanding of the altered underlying neurobiological mechanisms. The aim of this study was to identify likely aetiological variants in subjects affected with SCZ. Exome sequence data from a SCZ cas-control sample from Sweden was analysed for likely aetiological variants using a weighted burden test. Suggestive evidence implicated the UNC-51-like kinase (ULK1) gene, and it was observed that four rare variants that were more common in the Swedish SCZ cases were also more common in UK10K SCZ cases, as compared to obesity cases...
November 17, 2017: Annals of Human Genetics
https://www.readbyqxmd.com/read/29147729/regulation-of-human-research-with-lsd-in-the-united-states-1949-1987
#4
REVIEW
Katherine R Bonson
Human research with hallucinogens such as lysergic acid diethylamide (LSD) has been ongoing in the USA since 1949. During the 1960s, LSD was investigated for a variety of psychiatric indications, including the following: as an aid in treatment of schizophrenia; as a means of creating a "model psychosis"; as a direct antidepressant; and as an adjunct to psychotherapy. Studies with all drugs, including LSD, have always been conducted under federal regulatory controls, including the 1938 Food Drug and Cosmetic Act (FDCA; which ensured the safety of drugs) and the 1962 Kefauver-Harris Amendments to the FDCA (which described appropriate scientific methodology and ensured drug efficacy)...
November 17, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/29146941/developmental-excitatory-to-inhibitory-gaba-polarity-switch-is-disrupted-in-22q11-2-deletion-syndrome-a-potential-target-for-clinical-therapeutics
#5
Hayder Amin, Federica Marinaro, Davide De Pietri Tonelli, Luca Berdondini
Individuals with 22q11.2 microdeletion syndrome (22q11.2 DS) show cognitive and behavioral dysfunctions, developmental delays in childhood and risk of developing schizophrenia and autism. Despite extensive previous studies in adult animal models, a possible embryonic root of this syndrome has not been determined. Here, in neurons from a 22q11.2 DS mouse model (Lgdel (+/-)), we found embryonic-premature alterations in the neuronal chloride cotransporters indicated by dysregulated NKCC1 and KCC2 protein expression levels...
November 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29146472/discovery-of-the-first-low-shift-positive-allosteric-modulators-for-the-muscarinic-m1-receptor
#6
Alexander Flohr, Roman Hutter, Barbara Mueller, Claudia Bohnert, Mélanie Pellisson, Hervé Schaffhauser
Positive modulation of the muscarinic M1-receptor has for a long time attracted scientists and drug developers for the potential treatment of Alzheimer's disease or Schizophrenia. The precognitive potential of M1 activation has however not been clinically demonstrated as a result of side effects associated both with agonists and positive allosteric modulators (PAM's) of the M1-receptor. To avoid excessive activation of the M1-receptor we have designed a new screening format and developed the first low-shift positive allosteric modulators for the M1 receptor...
November 6, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/29146193/detection-of-relationships-among-multi-modal-brain-imaging-meta-features-via-information-flow
#7
Robyn L Miller, Victor M Vergara, Vince D Calhoun
BACKGROUND: Neuroscientists and clinical researchers are awash in data from an ever-growing number of imaging and other bio-behavioral modalities. This flow of brain imaging data, taken under resting and various task conditions, combines with available cognitive measures, behavioral information, genetic data plus other potentially salient biomedical and environmental information to create a rich but diffuse data landscape. The conditions being studied with brain imaging data are often extremely complex and it is common for researchers to employ more than one imaging, behavioral or biological data modality (e...
November 13, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/29146021/symptom-dimensions-and-subgroups-in-childhood-onset-schizophrenia
#8
Kirsten E S Craddock, Xueping Zhou, Siyuan Liu, Peter Gochman, Dwight Dickinson, Judith L Rapoport
OBJECTIVE: This study investigated symptom dimensions and subgroups in the National Institute of Mental Health (NIMH) childhood-onset schizophrenia (COS) cohort and their similarities to adult-onset schizophrenia (AOS) literature. METHOD: Scores from the Scales for the Assessment of Positive and Negative Symptoms (SAPS & SANS) from 125 COS patients were assessed for fit with previously established symptom dimensions from AOS literature using confirmatory factor analysis (CFA)...
November 13, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/29146020/clinical-and-demographic-predictors-of-continuing-remission-or-relapse-following-discontinuation-of-antipsychotic-medication-after-a-first-episode-of-psychosis-a-systematic-review
#9
REVIEW
Meghan Bowtell, Aswin Ratheesh, Patrick McGorry, Eoin Killackey, Brian O'Donoghue
BACKGROUND: Clinical guidelines recommend maintenance treatment with antipsychotic medication for one to two years following remission of symptoms after a first episode of psychosis. However, recent research has suggested that this may not be indicated. Consistent predictors of outcome would be beneficial to guide clinicians as to which individuals are likely to have a successful discontinuation. OBJECTIVES: This study reviews the literature with the aim of identifying demographic and clinical predictors of either relapse or continued remission in those with a first episode of psychosis following discontinuation of antipsychotic medication...
November 13, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/29145906/-a-rose-is-a-rose-is-a-rose
#10
C H Vinkers
Over a century ago in 1913, the poet Gertrude Stein wrote these famous words: sometimes things are just what they are. There has been a recent debate centred around the question whether or not schizophrenia exists. Is there a brain disease that can be called schizophrenia? What difference does it make to patients how we define schizophrenia? This editorial explores said questions, concluding that there is still much to be done to improve the recovery of patients diagnosed with disorders of the schizophrenia spectrum...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29145902/-the-20-year-longitudinal-trajectories-of-social-functioning-in-individuals-with-psychotic-disorders
#11
M Oorschot, A K J Fett, E Velthorst
OBJECTIVE: Social impairment is a long-recognized core feature of schizophrenia and is common in other psychotic disorders. Still, to date the long-term trajectories of social impairment in psychotic disorders have rarely been studied systematically. METHODS: Data came from the Suffolk County Mental Health Project, a 20-year prospective study of first-admission patients with psychotic disorders. A never-psychotic comparison group was also assessed. Latent class growth analysis was applied to longitudinal data on social functioning from 485 respondents with schizophrenia spectrum disorders and psychotic mood disorders, and associations of the empirically derived trajectories with premorbid social adjustment, diagnosis, and 20-year outcomes were examined...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29145751/negative-symptoms-and-reward-disturbances-in-schizophrenia-before-and-after-antipsychotic-monotherapy
#12
Mette Ødegaard Nielsen, Egill Rostrup, Brian Villumsen Broberg, Sanne Wulff, Birte Glenthøj
BACKGROUND: Negative symptoms (NS) are a central part of the symptomatology of schizophrenia, which is highly correlated to the functional outcome. Disturbances of the brain reward system are suggested to be central in the pathogenesis of NS by decreasing motivation and hedonic experiences. In this study, we compared reward-related brain activity in patients improving and not improving in NS after treatment with amisulpride. METHODS: Thirty-nine antipsychotic-naive patients and 49 healthy controls completed functional magnetic resonance imaging with a modified monetary incentive delay task...
November 1, 2017: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/29145545/treatment-of-alcohol-induced-psychotic-disorder-alcoholic-hallucinosis-a-systematic-review
#13
Barkat Masood, Peter Lepping, Dmitry Romanov, Rob Poole
Aims: To evaluate the effectiveness of evidence based treatments for alcohol-induced psychotic disorder (AIPD) as described by ICD-10 and DSM-5, a condition that is distinct from schizophrenia and has a close relationship with alcohol withdrawal states. Method: Systematic review using PRISMA guidelines. Results: Of 6205 abstracts found, fifteen studies and ten case reports met criteria and were examined. Larger studies examined the use of first-generation antipsychotic drugs, reporting full or partial remission in most patients...
November 14, 2017: Alcohol and Alcoholism: International Journal of the Medical Council on Alcoholism
https://www.readbyqxmd.com/read/29145190/charles-bonnet-syndrome-and-other-hallucinatory-phenomena
#14
François Boller, Daniel S Birnbaum, Nicoletta Caputi
Descriptions of hallucinatory phenomena have figured prominently since the beginning of recorded history. Jean Etienne Esquirol (1772-1840) is usually credited for having introduced the term in 1817, differentiating between hallucinations and illusions. Both are wrong perceptions, but in illusions, an external stimulus is always present whereas hallucinations are perceptions that occur in the absence of corresponding sensory stimuli. They occur in a variety of conditions but more often in the mentally ill, especially in schizophrenia where hallucinations, particularly auditory hallucinations represent for many, such as Henri Ey one of the cardinal features...
2018: Frontiers of Neurology and Neuroscience
https://www.readbyqxmd.com/read/29144549/zuclopenthixol-dihydrochloride-for-schizophrenia
#15
REVIEW
Edward J Bryan, Marie Ann Purcell, Ajit Kumar
BACKGROUND: Oral zuclopenthixol dihydrochloride (Clopixol) is an anti-psychotic treatment for people with psychotic symptoms, especially those with schizophrenia. It is associated with neuroleptic malignant syndrome, a prolongation of the QTc interval, extra-pyramidal reactions, venous thromboembolism and may modify insulin and glucose responses. OBJECTIVES: To determine the effects of zuclopenthixol dihydrochloride for treatment of schizophrenia. SEARCH METHODS: We searched the Cochrane Schizophrenia Group's Trials Register (latest search 09 June 2015)...
November 16, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29143723/food-insecurity-among-people-with-severe-mental-disorder-in-a-rural-ethiopian-setting-a-comparative-population-based-study
#16
K Tirfessa, C Lund, G Medhin, Y Hailemichael, A Fekadu, C Hanlon
AIM: In low-income African countries, ensuring food security for all segments of the population is a high priority. Mental illness is associated consistently with poverty, but there is little evidence regarding the association with food insecurity. The aim of this study was to compare the levels of food insecurity in people with severe mental disorders (SMD) with the general population in a rural African setting with a high burden of food insecurity. METHOD: Households of 292 community-ascertained people with a specialist-confirmed diagnosis of SMD (including schizophrenia and bipolar disorder) were compared with 284 households without a person with SMD in a rural district in south Ethiopia...
November 16, 2017: Epidemiology and Psychiatric Sciences
https://www.readbyqxmd.com/read/29143717/white-matter-abnormalities-in-22q11-2-deletion-syndrome-patients-showing-cognitive-decline
#17
Jasper Olivier Nuninga, Marc Marijn Bohlken, Sanne Koops, Ania M Fiksinski, René C W Mandl, Elemi J Breetvelt, Sasja N Duijff, René S Kahn, Iris E C Sommer, Jacob A S Vorstman
BACKGROUND: Decline in cognitive functioning precedes the first psychotic episode in the course of schizophrenia and is considered a hallmark symptom of the disorder. Given the low incidence of schizophrenia, it remains a challenge to investigate whether cognitive decline coincides with disease-related changes in brain structure, such as white matter abnormalities. The 22q11.2 deletion syndrome (22q11DS) is an appealing model in this context, as 25% of patients develop psychosis. Furthermore, we recently showed that cognitive decline also precedes the onset of psychosis in individuals with 22q11DS...
November 16, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/29143483/the-impact-of-mental-health-comorbidities-on-adherence-to-buprenorphine-a-claims-based-analysis
#18
Megan Litz, Douglas Leslie
BACKGROUND AND OBJECTIVES: Previous research has been inconclusive about whether opioid-dependent patients with psychiatric comorbidities have shorter treatment retention and higher relapse rates. This study aims to evaluate the impact of mental health comorbidities on adherence to buprenorphine using a large, national health insurance claims data base. METHODS: We used MarketScan® data from 2012 to 2014 to perform this analysis. Inclusion criteria included all patients with an opioid use disorder-related ICD-9 code who had been prescribed buprenorphine (n = 2947)...
November 16, 2017: American Journal on Addictions
https://www.readbyqxmd.com/read/29142666/social-cognition-in-schizophrenia
#19
Nare Torosyan, Robert G Bota
No abstract text is available yet for this article.
October 19, 2017: Mental Illness
https://www.readbyqxmd.com/read/29142665/treatment-of-22q11-2-deletion-syndrome-associated-schizophrenia-with-comorbid-anxiety-and-panic-disorder
#20
Candace B Borders, Amanda Suzuki, David Safani
No abstract text is available yet for this article.
October 19, 2017: Mental Illness
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