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https://www.readbyqxmd.com/read/28927482/treating-depressive-episodes-or-symptoms-in-patients-with-schizophrenia
#1
Geeske van Rooijen, Jentien Marloes Vermeulen, Henricus Gerardus Ruhé, Lieuwe de Haan
Depressive episodes or symptoms occur frequently in patients with schizophrenia and may have far-reaching consequences. Despite the high prevalence rate and clinical relevance of this comorbidity, knowledge about treatment options is still limited. The aim of this review is to provide an overview of the literature concerning treatment options for depressive episodes or symptoms in schizophrenia. Based on the current evidence, we present a stepwise treatment approach. The first step is to evaluate the current antipsychotic treatment of psychotic symptoms and consider lowering the dosage, since increased blockade of the dopamine D2 receptors may be associated with a worse subjective sense of well-being and dysphoria...
September 20, 2017: CNS Spectrums
https://www.readbyqxmd.com/read/28926097/learned-lessons-from-patients-who-take-clozapine-a-case-study
#2
Heeyoung Lee, Britney B Scolieri, Prabir K Mullick
PURPOSE: The purpose of this report is to provide clinical strategies to manage patients with schizophrenia taking clozapine. CONCLUSIONS: Serious side effects and required blood monitoring impede the use of clozapine, despite the benefits of clozapine for managing psychiatric symptoms. Well-managed patients receiving evidence-based interventions exhibit reduced symptoms, improved functioning, and better adherence to treatment. PRACTICE IMPLICATIONS: Preexisting medical conditions should be considered before prescribing clozapine...
September 19, 2017: Perspectives in Psychiatric Care
https://www.readbyqxmd.com/read/28923179/drugs-and-hyperglycemia-a-practical-guide
#3
REVIEW
Vandana Jain, Ronak Kumar Patel, Zaureen Kapadia, Sneha Galiveeti, Maryann Banerji, Lisel Hope
Drug-induced diabetes is one of the factors contributing to the increasing incidence of diabetes worldwide. This review considers the frequency, pathogenesis and treatment of drug-induced diabetes. Drugs that induce diabetes include hormonal therapy, especially glucocorticoids and androgen blockers, cardiovascular drugs, especially statins, beta-blockers and diuretics, antipsychotics, especially clozapine, olanzapine and quetiapine, antiretrovirals (protease inhibitors and non-reverse transcriptase inhibitors - NRTIs) and other drugs (mechanistic target of rapamycin inhibitors -mTORs, post organ transplantation drugs, tyrosine kinase inhibitors and interferon-alpha)...
October 2017: Maturitas
https://www.readbyqxmd.com/read/28922288/addition-of-filgrastim-neupogen-for-clozapine-rechallenge-in-the-case-of-parkinson-disease-patient
#4
Joseph Friedman, Edith Yeboah, Matthew Hermenau
No abstract text is available yet for this article.
September 2017: Clinical Neuropharmacology
https://www.readbyqxmd.com/read/28921163/discriminative-stimulus-properties-of-the-atypical-antipsychotic-amisulpride-comparison-to-its-isomers-and-to-other-benzamide-derivatives-antipsychotic-antidepressant-and-antianxiety-drugs-in-c57bl-6-mice
#5
Timothy J Donahue, Todd M Hillhouse, Kevin A Webster, Richard Young, Eliseu O De Oliveira, Joseph H Porter
RATIONALE: Racemic (RS)-amisulpride (Solian(®)) is an atypical antipsychotic drug used to treat schizophrenia and dysthymia. Blockade of dopamine D2/D3 and/or serotonin 5-HT7 receptors is implicated in its pharmacological effects. While the (S)-amisulpride isomer possesses a robust discriminative cue, discriminative stimulus properties of (RS)-amisulpride have not been evaluated. OBJECTIVES: The present study established (RS)-amisulpride as a discriminative stimulus and assessed amisulpride-like effects of amisulpride stereoisomers, other benzamide derivatives, and antipsychotic, antidepressant, and anxiolytic drugs...
September 18, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28919802/abcb1-and-abcc1-single-nucleotide-polymorphisms-in-patients-treated-with-clozapine
#6
Irina Piatkov, Dorgival Caetano, Yolinda Assur, Sue Lynn Lau, Trudi Jones, Steven C Boyages, Mark McLean
Clozapine (CZ) has superior efficacy to other antipsychotic agents in the treatment of schizophrenia and has been extensively used in clinical practice. ATP-binding cassette (ABC) transporter proteins are responsible for the distribution of various molecules as well as drugs across extracellular and intracellular membranes, including the blood-brain barrier. Genetic variations in these proteins can account for differences in treatment response. We investigated the influence of ABCB1 rs1045642 and ABCC1 rs212090 single-nucleotide polymorphisms (SNPs) on CZ serum level, clinical outcome, and changes in body mass index (BMI) in the first year of CZ treatment...
2017: Pharmacogenomics and Personalized Medicine
https://www.readbyqxmd.com/read/28919758/a-case-of-schizophrenia-comorbid-for-tetralogy-of-fallot-treated-with-clozapine-further-considerations-on-a-role-for-22q-11-2-in-the-proneness-for-seizures
#7
Hiroko Kashiwagi, Satoru Ikezawa, Tomiki Sumiyoshi, Atsuko Kadono, Kazuhiko Segawa, Kazuyoshi Takeda, Mayu Omori, Hisako Taguchi, Naotsugu Hirabayashi
We present a case of schizophrenia comorbid for tetralogy of Fallot, without chromosome 22q.11.2 deletion or duplication, treated successfully with a combination of clozapine and antiepileptic drugs. Although clozapine by itself initially triggered convulsive seizures, we continued it with co-administration of valproate and topiramate. This combined treatment did not affect cardiac function of the patient, who experienced a favorable clinical course in terms of symptomatology and functional outcomes. To our knowledge, we provide the first report on a patient with tetralogy of Fallot, in whom 22q...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28919358/perfused-human-hepatocyte-microtissues-identify-reactive-metabolite-forming-and-mitochondria-perturbing-hepatotoxins
#8
Cliff Rowe, Mohsen Shaeri, Emma Large, Terri Cornforth, Angela Robinson, Tomasz Kostrzewski, Rowena Sison-Young, Christopher Goldring, Kevin Park, David Hughes
Hepatotoxins cause liver damage via many mechanisms but the formation of reactive metabolites and/or damage to liver mitochondria are commonly implicated. We assess 3D human primary hepatocyte microtissues as a platform for hepatotoxicity studies with reactive metabolite-forming and mitochondria-perturbing compounds. We show that microtissues formed from cryopreserved human hepatocytes had bile canaliculi, transcribed mRNA from genes associated with xenobiotic metabolism and expressed functional cytochrome P450 enzymes...
September 15, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28913970/human-neutrophils-show-decreased-survival-upon-long-term-exposure-to-clozapine
#9
Aya Goto, Akira Yoshimi, Tomoko Nagai, Mako Ukigai, Akihiro Mouri, Norio Ozaki, Yukihiro Noda
OBJECTIVE: Clozapine is an atypical antipsychotic prescribed for treatment-resistant schizophrenic patients, but treatment with clozapine is strictly limited because it can induce lethal-hematologic side effects. We investigated the effects of short- and long-term exposure of human neutrophils derived from healthy subjects to clozapine and compared them with the effects of reactive metabolite of clozapine, olanzapine, and doxorubicin. METHODS: Neutrophils were exposed to clozapine and olanzapine (1, 10, 50, or 100 μM), reactive metabolite of clozapine (50 or 100 μM), or doxorubicin (0...
September 15, 2017: Human Psychopharmacology
https://www.readbyqxmd.com/read/28899760/chronic-atypical-antipsychotics-but-not-haloperidol-increase-neurogenesis-in-the-hippocampus-of-adult-mouse
#10
Koji Chikama, Hidetaka Yamada, Tatsuo Tsukamoto, Kosuke Kajitani, Yusaku Nakabeppu, Naohisa Uchimura
It is suggested that altered neuroplasticity contributes to the pathophysiology of schizophrenia and antipsychotics may exhibit some of their therapeutic efficacies by improving neurogenesis and/or proliferation of neural progenitors. The aim of this study is to investigate whether chronic antipsychotics treatment affect neurogenesis in adult mouse hippocampus. Animals were administered olanzapine, quetiapine, clozapine, risperidone, aripiprazole, or haloperidol via the osmotic minipump for 21 days and then injected with 5-bromo-2'-deoxyuridine (BrdU) to label mitotic cells...
September 9, 2017: Brain Research
https://www.readbyqxmd.com/read/28886461/time-dependent-effects-of-olanzapine-treatment-on-the-expression-of-histidine-decarboxylase-h1-and-h3-receptor-in-the-rat-brain-the-roles-in-olanzapine-induced-obesity
#11
Meng He, Qingsheng Zhang, Chao Deng, Tiantian Jin, Xueqin Song, Hongqing Wang, Xu-Feng Huang
Antipsychotic treatment, particularly olanzapine and clozapine, induces severe obesity. The Histamine H1 receptor is considered to be an important contributor to olanzapine-induced obesity, however how olanzapine modulates the histaminergic system is not sufficiently understood. This study examined the effect of olanzapine on key molecules of the histaminergic system, including histidine decarboxylase (HDC), H1 receptor (H1R) and H3 receptor (H3R), in the brain at different stages of olanzapine-induced obesity...
August 24, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28883731/antipsychotic-associated-weight-gain-management-strategies-and-impact-on-treatment-adherence
#12
REVIEW
Madhubhashinee Dayabandara, Raveen Hanwella, Suhashini Ratnatunga, Sudarshi Seneviratne, Chathurie Suraweera, Varuni A de Silva
Antipsychotic-induced weight gain is a major management problem for clinicians. It has been shown that weight gain and obesity lead to increased cardiovascular and cerebrovascular morbidity and mortality, reduced quality of life and poor drug compliance. This narrative review discusses the propensity of various antipsychotics to cause weight gain, the pharmacologic and nonpharmacologic interventions available to counteract this effect and its impact on adherence. Most antipsychotics cause weight gain. The risk appears to be highest with olanzapine and clozapine...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28883496/overexpression-of-insig-2-inhibits-atypical-antipsychotic-induced-adipogenic-differentiation-and-lipid-biosynthesis-in-adipose-derived-stem-cells
#13
Chien-Chih Chen, Li-Wen Hsu, Kuang-Tzu Huang, Shigeru Goto, Chao-Long Chen, Toshiaki Nakano
Atypical antipsychotics (AAPs) are considered to possess superior efficacy for treating both the positive and negative symptoms of schizophrenia; however, AAP use often causes excessive weight gain and metabolic abnormalities. Recently, several reports have demonstrated that AAPs activate sterol regulatory element-binding protein (SREBP). SREBP, SREBP cleavage-activating protein (SCAP) and insulin-induced gene (Insig) regulate downstream cholesterol and fatty acid biosynthesis. In this study, we explored the effects of clozapine, olanzapine and risperidone on SREBP signaling and downstream lipid biosynthesis genes in the early events of adipogenic differentiation in adipose-derived stem cells (ASCs)...
September 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28882687/sodium-valproate-and-clozapine-induced-neutropenia-a-case-control-study-using-register-data
#14
Steffi Malik, John Lally, Olesya Ajnakina, Megan Pritchard, Amir Krivoy, Fiona Gaughran, Hitesh Shetty, Robert J Flanagan, James H MacCabe
BACKGROUND: The use of clozapine is limited due to the occurrence of neutropenia, and the rare but life threatening adverse event of agranulocytosis. There is little epidemiological research into clinical factors that may impact on this risk. We conducted a case control study examining the clinical risk factors for neutropenia patients treated with clozapine. METHOD: A case-control study was conducted within a database of anonymised electronic clinical records. All patients who discontinued clozapine due to a neutropenic event were included as cases...
September 4, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28880354/-pimavanserin-a-new-treatment-for-the-parkinson-s-disease-psychosis
#15
J H Duits, M S Ongering, H J M Martens, P F J Schulte
Clozapine is an effective drug for treating psychosis in Parkinson's disease (PDP) and is registered as such in the Netherlands. However, clozapine can have adverse effects, including agranulocytosis. The new drug pimavanserin was recently registered in the United States for the treatment of PDP.<br/> AIM: To review the literature on pimavanserin and discuss the position it currently occupies in the Netherlands as a potential treatment for PDP.<br/> METHOD: Systematic search of the literature.<br/> RESULTS: We found reports on four randomised controlled trials (RCTs), one review and six articles about the pharmacokinetics and pharmacodynamics of pimavanserin...
2017: Tijdschrift Voor Psychiatrie
https://www.readbyqxmd.com/read/28879574/genetic-variants-impacting-metabolic-outcomes-among-people-on-clozapine-a-systematic-review-and-meta-analysis
#16
REVIEW
Rachel J Suetani, Dan Siskind, Heidi Reichhold, Steve Kisely
Clozapine is the gold standard medication for treatment refractory schizophrenia, but unfortunately, its use is also associated with many adverse metabolic side effects. There may be a strong genetic component to the development of these adverse effects. We undertook a systematic review to examine the evidence for genetic variation being associated with secondary metabolic outcomes in patients with schizophrenia on clozapine, under both longitudinal and cross-sectional study designs. We limited studies to those examining patients definitely taking clozapine, unlike prior reviews that have examined metabolic effects of patients taking a range of antipsychotic medications...
September 6, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28869006/amisulpride-augmentation-in-clozapine-unresponsive-schizophrenia-amicus-a-double-blind-placebo-controlled-randomised-trial-of-clinical-effectiveness-and-cost-effectiveness
#17
Thomas Re Barnes, Verity C Leeson, Carol Paton, Louise Marston, Linda Davies, William Whittaker, David Osborn, Raj Kumar, Patrick Keown, Rameez Zafar, Khalid Iqbal, Vineet Singh, Pavel Fridrich, Zachary Fitzgerald, Hemant Bagalkote, Peter M Haddad, Mariwan Husni, Tim Amos
BACKGROUND: When treatment-refractory schizophrenia shows an insufficient response to a trial of clozapine, clinicians commonly add a second antipsychotic, despite the lack of robust evidence to justify this practice. OBJECTIVES: The main objectives of the study were to establish the clinical effectiveness and cost-effectiveness of augmentation of clozapine medication with a second antipsychotic, amisulpride, for the management of treatment-resistant schizophrenia...
September 2017: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/28865402/effects-of-age-and-gender-on-the-serum-levels-of-clozapine-olanzapine-risperidone-and-quetiapine
#18
I Castberg, A A Westin, E Skogvoll, O Spigset
OBJECTIVE: To investigate serum concentrations of second-generation antipsychotics in relation to age and gender in a population ranging from 18 to 100 years. METHOD: Results from a routine therapeutic drug monitoring database were retrieved, and 43 079 samples from 11 968 patients were included (17 249 samples for clozapine, 16 171 samples for olanzapine, 5343 samples for risperidone, and 4316 samples for quetiapine). The dose-adjusted concentration was used as the primary target variable...
September 2, 2017: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/28858406/chemogenetic-activation-of-the-lateral-hypothalamus-reverses-early-life-stress-induced-deficits-in-motivational-drive
#19
Erin J Campbell, Caitlin S Mitchell, Cameron D Adams, Jiann Wei Yeoh, Deborah M Hodgson, Brett A Graham, Christopher V Dayas
Altered motivated behaviour is a cardinal feature of several neuropsychiatric conditions including mood disorders. One well-characterized antecedent to the development of mood disorders is exposure to early life stress (ELS). A key brain substrate controlling motivated behaviour is the lateral hypothalamus (LH). Here we examined the effect of ELS on LH activation and the motivation to self-administer sucrose. We tested whether chemogenetic activation of LH circuits could modify sucrose responding in ELS rats and examined the impact on LH cell populations...
August 31, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28857068/anti-manic-efficacy-of-a-novel-kv3-potassium-channel-modulator
#20
Puja K Parekh, Michelle M Sidor, Andrea Gillman, Darius Becker-Krail, Letizia Bettelini, Roberto Arban, Giuseppe S Alvaro, Erika Zambello, Chiara Mutinelli, Yanhua Huang, Charles H Large, Colleen A McClung
Kv3.1 and Kv3.2 voltage-gated potassium channels are expressed on parvalbumin-positive GABAergic interneurons in corticolimbic brain regions and contribute to high frequency neural firing. The channels are also expressed on GABAergic neurons of the basal ganglia, substantia nigra, and ventral tegmental area (VTA) where they regulate firing patterns critical for movement control, reward, and motivation. Modulation of Kv3.1 and Kv3.2 channels may therefore have potential in the treatment of disorders in which these systems have been implicated, such as bipolar disorder...
August 31, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
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