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https://www.readbyqxmd.com/read/29791666/prevalence-of-polymorphisms-in-the-ankk1-drd2-drd3-genes-and-metabolic-syndrome-in-refractory-schizophrenia
#1
Jeizziani Aparecida Ferreira Pinto, Pedro Henrique Batista de Freitas, Fernanda Daniela Dorneles Nunes, Paulo Afonso Granjeiro, Luciana Lara Dos Santos, Richardson Miranda Machado
OBJECTIVE: to estimate the prevalence of TaqIA, -141C and rs6280 polymorphisms of the ANKK1, DRD2 and DRD3 genes and evaluate their association with the occurrence of metabolic syndrome in patients with refractory schizophrenia. METHOD: cross-sectional study conducted in the Extended Western Region of Minas Gerais, with refractory schizophrenic patients using the antipsychotic clozapine. Sociodemographic, clinical, anthropometric, biochemical and genetic data were collected...
2018: Revista Latino-americana de Enfermagem
https://www.readbyqxmd.com/read/29786829/meta-analysis-examining-the-epidemiology-of-clozapine-associated-neutropenia
#2
N Myles, H Myles, S Xia, M Large, S Kisely, C Galletly, R Bird, D Siskind
BACKGROUND: Clozapine is associated with life-threatening neutropenia. There are no previous meta-analyses of the epidemiology of clozapine-associated neutropenia. OBJECTIVES: To determine the cumulative incidence of mild, moderate and severe neutropenia, incidence of death related to severe neutropenia, case fatality rate of neutropenia and the longitudinal incidence of neutropenia following exposure to clozapine. DATA SOURCES: A systematic search of Medline, EMBASE and PsycINFO using search terms [clozapine OR clopine OR zaponex OR clozaril] AND [neutropenia OR agranulocytosis]...
May 21, 2018: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/29786639/chemogenetic-enhancement-of-axon-regeneration-following-peripheral-nerve-injury-in-the-slick-a-mouse
#3
Poonam B Jaiswal, Olivia C Mistretta, Patricia J Ward, Arthur W English
The effects of chemogenetics on axon regeneration following peripheral nerve transection and repair were studied in mice expressing a Cre-dependent excitatory designer receptor exclusively activated by designer drugs (DREADD) and Cre-recombinase/yellow fluorescent protein (YFP) in a subset of motor and sensory neurons and cortical motoneurons (SLICK-A). Sciatic nerves were cut and repaired and mice were treated either once, at the time of injury, or five days per week for two weeks with clozapine N-oxide (CNO) (1 mg/kg, i...
May 22, 2018: Brain Sciences
https://www.readbyqxmd.com/read/29782344/weight-loss-during-atomoxetine-add-on-to-clozapine-responsive-schizophrenia
#4
Ahmed Naguy, Bibi Alamiri, Bader Khraibut
No abstract text is available yet for this article.
May 16, 2018: American Journal of Therapeutics
https://www.readbyqxmd.com/read/29763576/g-i-protein-functions-in-thalamic-neurons-to-decrease-orofacial-nociceptive-response
#5
Jennifer Strand, Crystal Stinson, Larry L Bellinger, Yuan Peng, Phillip R Kramer
Orofacial pain includes neuronal pathways that project from the trigeminal nucleus to and through the thalamus. What role the ventroposterior thalamic complex (VP) has on orofacial pain transmission is not understood. To begin to address this question an inhibitory G protein (Gi) designer receptor exclusively activated by a designer drug (DREADD) was transfected in cells of the VP using adeno-associated virus isotype 8. Virus infected cells were identified by a fluorescent tag and immunostaining. Cells were silenced after injecting the designer drug clozapine-n-oxide, which binds the designer receptor activating Gi ...
May 12, 2018: Brain Research
https://www.readbyqxmd.com/read/29759351/dysbindin-1-contributes-to-prefrontal-cortical-dendritic-arbor-pathology-in-schizophrenia
#6
Glenn T Konopaske, Darrick T Balu, Kendall T Presti, Grace Chan, Francine M Benes, Joseph T Coyle
Deep layer III pyramidal cells in the dorsolateral prefrontal cortex (DLPFC) from subjects with schizophrenia and bipolar disorder previously were shown to exhibit dendritic arbor pathology. This study sought to determine whether MARCKS, its regulatory protein dysbindin-1, and two proteins, identified using microarray data, CDC42BPA and ARHGEF6, were associated with dendritic arbor pathology in the DLPFC from schizophrenia and bipolar disorder subjects. Using western blotting, relative protein expression was assessed in the DLPFC (BA 46) grey matter from subjects with schizophrenia (n = 19), bipolar disorder (n = 17) and unaffected control subjects (n = 19)...
May 11, 2018: Schizophrenia Research
https://www.readbyqxmd.com/read/29758999/movement-disorders-associated-with-antipsychotic-medication-in-people-with-schizophrenia-an-overview-of-cochrane-reviews-and-meta-analysis
#7
Davide Martino, Vikram Karnik, Sydney Osland, Thomas R E Barnes, Tamara M Pringsheim
Movement disorders associated with antipsychotic medications are relatively common, stigmatising, and potentially disabling. Their prevalence in people with psychosis who are prescribed second-generation antipsychotics (SGAs) is uncertain, as is their level of recognition by clinicinas. We conducted meta-analyses of randomised controlled trials included in the Cochrane Database of Systematic Reviews on schizophrenia and schizophrenia-like psychoses to estimate the prevalence of new-onset dystonia, akathisia, parkinsonism, and tremor with SGAs (amisulpride, asenapine, aripiprazole, clozapine, olanzapine, paliperidone, quetiapine, risperidone, L-sulpiride, and ziprasidone) approved in Canada and the UK, comparing them with haloperidol and chlorpromazine...
January 1, 2018: Canadian Journal of Psychiatry. Revue Canadienne de Psychiatrie
https://www.readbyqxmd.com/read/29756288/mixed-states-in-bipolar-and-major-depressive-disorders-systematic-review-and-quality-appraisal-of-guidelines
#8
REVIEW
N Verdolini, D Hidalgo-Mazzei, A Murru, I Pacchiarotti, L Samalin, A H Young, E Vieta, A F Carvalho
OBJECTIVE: This systematic review provided a critical synthesis and a comprehensive overview of guidelines on the treatment of mixed states. METHOD: The MEDLINE/PubMed and EMBASE databases were systematically searched from inception to March 21st, 2018. International guidelines covering the treatment of mixed episodes, manic/hypomanic, or depressive episodes with mixed features were considered for inclusion. A methodological quality assessment was conducted with the Appraisal of Guidelines for Research and Evaluation-AGREE II...
May 13, 2018: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/29754898/replay-of-episodic-memories-in-the-rat
#9
Danielle Panoz-Brown, Vishakh Iyer, Lawrence M Carey, Christina M Sluka, Gabriela Rajic, Jesse Kestenman, Meredith Gentry, Sydney Brotheridge, Isaac Somekh, Hannah E Corbin, Kjersten G Tucker, Bianca Almeida, Severine B Hex, Krysten D Garcia, Andrea G Hohmann, Jonathon D Crystal
Vivid episodic memories in people have been characterized as the replay of multiple unique events in sequential order [1-3]. The hippocampus plays a critical role in episodic memories in both people and rodents [2, 4-6]. Although rats remember multiple unique episodes [7, 8], it is currently unknown if animals "replay" episodic memories. Therefore, we developed an animal model of episodic memory replay. Here, we show that rats can remember a trial-unique stream of multiple episodes and the order in which these events occurred by engaging hippocampal-dependent episodic memory replay...
April 21, 2018: Current Biology: CB
https://www.readbyqxmd.com/read/29749251/prucalopride-in-clozapine-induced-constipation
#10
Naveen Thomas, Nikhil Jain, Fiona Connally, Justin Mc Yeung, Christos Pantelis
No abstract text is available yet for this article.
May 1, 2018: Australian and New Zealand Journal of Psychiatry
https://www.readbyqxmd.com/read/29737183/clozapine-toxicity-in-a-cyp2d6-poor-metaboliser-additive-effects-of-haloperidol-and-valproate-on-clozapine-metabolism
#11
Robert Reznik, Rena Yuan Yuan Chen, Phoebe Stanford
OBJECTIVE: To illustrate the complexities of clozapine metabolism with the use of therapeutic drug monitoring. METHODS: We describe a case of clozapine toxicity in a patient with schizophrenia treated with the combination of clozapine, valproate and haloperidol. RESULTS: A 24-year-old CYP2D6 poor metaboliser developed clozapine toxicity corresponding to the additive effects of haloperidol, and increasing clozapine and valproate doses. Saturation of metabolism, evidenced by a high clozapine/norclozapine ratio, was present at this time...
May 1, 2018: Australasian Psychiatry: Bulletin of Royal Australian and New Zealand College of Psychiatrists
https://www.readbyqxmd.com/read/29732913/augmentation-strategies-for-clozapine-refractory-schizophrenia-a-systematic-review-and-meta-analysis
#12
Dan J Siskind, Michael Lee, Arul Ravindran, Qichen Zhang, Evelyn Ma, Balaji Motamarri, Steve Kisely
BACKGROUND: Although clozapine is the most effective medication for treatment refractory schizophrenia, only 40% of people will meet response criteria. We therefore undertook a systematic review and meta-analysis of global literature on clozapine augmentation strategies. METHODS: We systematically reviewed PubMed, PsycInfo, Embase, Cochrane Database, Chinese Biomedical Literature Service System and China Knowledge Resource Integrated Database for randomised control trials of augmentation strategies for clozapine resistant schizophrenia...
May 1, 2018: Australian and New Zealand Journal of Psychiatry
https://www.readbyqxmd.com/read/29723576/beta-and-gamma-oscillations-in-prefrontal-cortex-during-nmda-hypofunction-an-in-vitro-model-of-schizophrenia-features
#13
Beatriz Rebollo, Maria Perez-Zabalza, Marcel Ruiz-Mejias, Lorena Perez-Mendez, Maria V Sanchez-Vives
NMDA receptor (NMDAr) hypofunction has been widely used as a schizophrenia model. Decreased activation of NMDAr is associated with a disrupted excitation/inhibition balance in the prefrontal cortex and with alterations in gamma synchronization. Our aim was to investigate whether this phenomenon could be reproduced in the spontaneous oscillatory activity generated by the local prefrontal network in vitro and, if so, to explore the effects of antipsychotics on the resulting activity. Extracellular recordings were obtained from prefrontal cortex slices bathed in in vivo-like ACSF solution...
April 30, 2018: Neuroscience
https://www.readbyqxmd.com/read/29720183/disrupted-sphingolipid-metabolism-following-acute-clozapine-and-olanzapine-administration
#14
Katrina Weston-Green, Ilijana Babic, Michael de Santis, Bo Pan, Magdalene K Montgomery, Todd Mitchell, Xu-Feng Huang, Jessica Nealon
BACKGROUND: Second generation antipsychotics (SGAs) induce glucometabolic side-effects, such as hyperglycemia and insulin resistance, which pose a therapeutic challenge for mental illness. Sphingolipids play a role in glycaemic balance and insulin resistance. Endoplasmic reticulum (ER) stress contributes to impaired insulin signalling and whole-body glucose intolerance. Diabetogenic SGA effects on ER stress and sphingolipids, such as ceramide and sphingomyelin, in peripheral metabolic tissues are unknown...
May 2, 2018: Journal of Biomedical Science
https://www.readbyqxmd.com/read/29715679/development-of-a-hematocrit-insensitive-device-to-collect-accurate-volumes-of-dried-blood-spots-without-specialized-skills-for-measuring-clozapine-and-its-metabolites-as-model-analytes
#15
Tatsuo Nakahara, Natsumi Otani, Takefumi Ueno, Kijiro Hashimoto
Dried blood spots have been used as alternatives to traditional plasma and serum samples. We have now developed new devices, named volumetric absorptive paper disc (VAPD) and mini-disc (VAPDmini), to collect accurate volumes of dried blood spots in a simple manner and without the need for additional instruments. VAPD consists of a filter paper disc and a filter paper sheet with holes slightly larger than the disc. The disc is fixed in one such hole without direct contact with the filter sheet. VAPDmini is a scaled-down version of the same device...
April 16, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29715183/c-fos-expression-in-the-hypothalamic-paraventricular-nucleus-after-a-single-treatment-with-a-typical-haloperidol-and-nine-atypical-antipsychotics-a-pilot-study
#16
Alexander Kiss
OBJECTIVE: The aim of the present study was to find out whether acute effect of different doses of selected antipsychotics including aripiprazole (ARI), amisulpride (AMI), asenapine (ASE), haloperidol (HAL), clozapine (CLO), risperidone (RIS), quetiapine (QUE), olanzapine (OLA), ziprasidone (ZIP), and paliperidone (PAL) may have a stimulatory impact on the c-Fos expression in the hypothalamic paraventricular nucleus (PVN) neurons. METHODS: Adult male Wistar rats weighing 280-300 g were used...
April 1, 2018: Endocrine Regulations
https://www.readbyqxmd.com/read/29713451/effectiveness-of-paliperidone-long-acting-injection-in-clinical-practice
#17
Paul Nicholas Deslandes, Elan Haf Ward, Kathryn Norris, Robert David Sewell
Background: The efficacy of the long-acting injectable formulation of the antipsychotic paliperidone (paliperidone palmitate) has been investigated in randomized controlled trials. Due to the nature of study designs, these may not be representative of usual clinical practice. The aim of this study was to assess the clinical effectiveness of the long-acting injectable antipsychotic paliperidone palmitate using treatment continuation at 1 year as an outcome. Methods: Patients were initiated on paliperidone palmitate prior to December 2014 in a single health board in Wales (UK)...
May 2018: Therapeutic Advances in Psychopharmacology
https://www.readbyqxmd.com/read/29713292/avatar-therapy-for-persistent-auditory-verbal-hallucinations-in-an-ultra-resistant-schizophrenia-patient-a-case-report
#18
Laura Dellazizzo, Stéphane Potvin, Kingsada Phraxayavong, Pierre Lalonde, Alexandre Dumais
Effective treatment strategies for schizophrenia remain very challenging and many treatment-resistant patients will suffer from persistent auditory verbal hallucinations (AVH). While clozapine is the gold-standard medication for this complex population, many will not respond to this molecule. For these ultra-resistant patients, limited options are available. Cognitive-behavioral therapy (CBT) is the most widely used psychological intervention, though it offers modest effects. With the interpersonal dimension of AVH being recognized, Avatar Therapy (AT), a novel experiential treatment enabling patients to create an avatar of their persecutor and allowing them to gain control over their symptoms, was developed and tested...
2018: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29710513/alterations-in-oxidative-stress-markers-and-its-correlation-with-clinical-findings-in-schizophrenic-patients-consuming-perphenazine-clozapine-and-risperidone
#19
Narjes Hendouei, Samaneh Farnia, Farhad Mohseni, Azadeh Salehi, Maedeh Bagheri, Faezeh Shadfar, Fatemeh Barzegar, Seyed Davood Hoseini, Jamshid Yazdani Charati, Fatemeh Shaki
BACKGROUND AND OBJECTIVE: Today, the role of oxidative stress in development of schizophrenia has gained attention. Also, some atypical antipsychotic agents showed antioxidant properties. Therefore, in this study, we evaluated the level of oxidative stress parameters between patients treated with perphenazine, clozapine and risperidone and their relationship with schizophrenia symptoms' severity. MATERIALS AND METHODS: This was a descriptive study on 100 patients with chronic schizophrenia...
April 24, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29704613/regional-brain-volume-changes-following-chronic-antipsychotic-administration-are-mediated-by-the-dopamine-d2-receptor
#20
Elisa Guma, Jill Rocchetti, Gabriel A Devenyi, Arnaud Tanti, Axel Mathieu, Jason P Lerch, Guillaume Elgbeili, Blandine Courcot, Naguib Mechawar, M Mallar Chakravarty, Bruno Giros
BACKGROUND: Neuroanatomical alterations are well established in patients suffering from schizophrenia, however the extent to which these changes are attributable to illness, antipsychotic drugs (APDs), or their interaction is unclear. APDs have been extremely effective for treatment of positive symptoms in major psychotic disorders. Their therapeutic effects are mediated, in part, through blockade of D2-like dopamine (DA) receptors, i.e. the D2, D3 and D4 dopamine receptors. Furthermore, the dependency of neuroanatomical change on DA system function and D2-like receptors has yet to be explored...
April 25, 2018: NeuroImage
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