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https://www.readbyqxmd.com/read/28913970/human-neutrophils-show-decreased-survival-upon-long-term-exposure-to-clozapine
#1
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/28912551/the-antipsychotic-drugs-olanzapine-and-haloperidol-modify-network-connectivity-and-spontaneous-activity-of-neural-networks-in-vitro
#2
Egor Dzyubenko, Georg Juckel, Andreas Faissner
Impaired neural synchronization is a hallmark of psychotic conditions such as schizophrenia. It has been proposed that schizophrenia-related cognitive deficits are caused by an unbalance of reciprocal inhibitory and stimulatory signaling. This supposedly leads to decreased power of induced gamma oscillations during the performance of cognitive tasks. In light of this hypothesis an efficient antipsychotic treatment should modify the connectivity and synchronization of local neural circuits. To address this issue, we investigated a model of hippocampal neuronal networks in vitro...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28911960/characterization-of-the-adrenocorticotrophic-hormone-induced-mouse-model-of-resistance-to-antidepressant-drug-treatment
#3
Bettadapura N Srikumar, Mahesh Paschapur, Narasimharaju Kalidindi, Bharath Adepu, Manish L Das, Muppana V Sreedhara, Vijaya K Kuchibhotla, Rick L Pieschl, Yu-Wen Li, Durga Shiva Prasad Ega, Justin Louis, Senthilkumar Murugesan, Pattipati S Naidu, Manjunath Ramarao, Linda J Bristow, Reeba K Vikramadithyan
Approximately 30-60% of patients treated with existing antidepressants fail to achieve remission of depressive symptoms leading to Treatment Resistant Depression (TRD). There is an urgent need to develop novel medications, which is highly limited by the non-availability of relevant animal models with good predictive validity. ACTH administration has been shown to result in the resistance to acute and chronic effects of imipramine. However, the pharmacology of the model and the mechanisms contributing to the resistance are not completely understood...
September 11, 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/28911850/activation-of-indoleamine-2-3-dioxygenase-pathway-by-olanzapine-augments-antidepressant-effects-of-venlafaxine-in-mice
#4
Jaya Thomas, Razia Khanam, Divya Vohora
Recent clinical studies report antipsychotics as a better option to augment the action of antidepressants in treatment resistant cases. However, the proper mechanisms underlying the antidepressant effect of antipsychotics is still not clear. Indolamine 2, 3 dioxygenase (IDO) pathway is considered to be an important pathway in pro-inflammatory cytokine associated stress-induced depression. The present study investigated the antidepressant effect of venlafaxine, olanzapine and their combinations in chronic forced-swim stress-induced depression in mice...
August 31, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28904514/hyponatremia-with-olanzapine-a-suspected-association
#5
Ankur Sachdeva, Mona Choudhary
Hyponatremia is a rare, yet potentially life threatening complication of antipsychotics. Here, we report a case of a 45-year-old female diagnosed with schizophrenia who developed hyponatremia soon after addition of olanzapine to the existing treatment. This prompted us to evaluate the relationship between hyponatremia and olanzapine, as timely management is crucial. Naranjo algorithm established a "probable" causal relation between olanzapine and hyponatremia. Possible etiological reasons of this clinically significant and life threatening adverse event have been discussed...
June 25, 2017: Shanghai Archives of Psychiatry
https://www.readbyqxmd.com/read/28899760/chronic-atypical-antipsychotics-but-not-haloperidol-increase-neurogenesis-in-the-hippocampus-of-adult-mouse
#6
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/28895028/prevalence-of-qt-interval-prolonging-drug-drug-interactions-qt-ddis-in-psychiatry-wards-of-tertiary-care-hospitals-in-pakistan-a-multicenter-cross-sectional-study
#7
Qasim Khan, Mohammad Ismail, Iqbal Haider, Fahadullah Khan
Background QT prolongation and associated arrhythmias, torsades de pointes (TdP), are considerable negative outcomes of many antipsychotic and antidepressant agents frequently used by psychiatric patients. Objective To identify the prevalence, levels, and predictors of QT prolonging drug-drug interactions (QT-DDIs), and AZCERT (Arizona Center for Education and Research on Therapeutics) classification of drugs involved in QT-DDIs. Setting Psychiatry wards of three major tertiary care hospitals of Khyber-Pakhtunkhwa, Pakistan...
September 12, 2017: International Journal of Clinical Pharmacy
https://www.readbyqxmd.com/read/28892416/roman-high-and-low-avoidance-rats-differ-in-their-response-to-chronic-olanzapine-treatment-at-the-level-of-body-weight-regulation-glucose-homeostasis-and-cortico-mesolimbic-gene-expression
#8
Simon S Evers, Gretha J Boersma, Kellie Lk Tamashiro, Anton Jw Scheurink, Gertjan van Dijk
Olanzapine, an antipsychotic agent mainly used for treating schizophrenia, is frequently associated with body weight gain and diabetes mellitus. Nonetheless, studies have shown that not every individual is equally susceptible to olanzapine's weight-gaining effect. Therefore, Roman high and low avoidance rat strains were examined on their responsiveness to olanzapine treatment. The Roman high avoidance rat shares many behavioral and physiological characteristics with human schizophrenia, such as increased central dopaminergic sensitivity, whereas the Roman low avoidance rat has been shown to be prone to diet-induced obesity and insulin resistance...
August 1, 2017: Journal of Psychopharmacology
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
#9
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
#10
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
#11
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/28866898/olanzapine-induced-delirium-a-probable-adverse-drug-reaction
#12
David MacKintosh
Olanzapine is an atypical antipsychotic indicated for the treatment of schizophrenia and known to be effective in the management of delirium. In addition to its use for these indications olanzapine has also been used in the management of chemotherapy induced nausea and vomiting and otherwise difficult to control nausea and vomiting in palliative care settings. Although considered to be well tolerated with a lower incidence of extrapyramidal effects than first generation antipsychotics there are a small number of reports of olanzapine inducing delirium...
June 19, 2017: Annals of Palliative Medicine
https://www.readbyqxmd.com/read/28865402/effects-of-age-and-gender-on-the-serum-levels-of-clozapine-olanzapine-risperidone-and-quetiapine
#13
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/28861008/case-of-secondary-tics-associated-with-olanzapine-in-an-adult
#14
Eric W Mills, Lindsay S Shaffer, Fernando S Goes, Akira Sawa, Frederick C Nucifora
Atypical antipsychotic medications, such as risperidone, aripiprazole, and olanzapine, have utility in treating motor tics, particularly in Tourette syndrome. In rare cases, atypical antipsychotic medications have been associated with adult-onset motor tics. Such adverse drug reactions have been documented in response to quetiapine, aripiprazole, and amisulpride. Here, we report, to our knowledge, the first case of adult-onset motor tics related to olanzapine administration.
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28856448/olanzapine-for-prevention-of-chemotherapy-induced-nausea-and-vomiting-in-children-and-adolescents-a-multi-center-feasibility-study
#15
J Flank, T Schechter, P Gibson, D L Johnston, A D Orsey, C Portwine, L Sung, L L Dupuis
CONTEXT: There are no prospective pediatric trials evaluating olanzapine for chemotherapy-induced nausea and vomiting (CINV) prevention. OBJECTIVE: This study evaluated the feasibility of a trial of olanzapine to evaluate the contribution of olanzapine to CINV control in pediatric oncology patients. METHODS: Patients < 18 years receiving CINV prophylaxis with ondansetron/granisetron/palonosetron ± dexamethasone ± aprepitant were eligible to participate in this prospective, single-arm, open-label study...
August 30, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28852259/chlorpromazine-as-prophylaxis-for-bipolar-disorder-with-treatment-and-electroconvulsive-therapy-refractory-mania-old-horse-new-trick
#16
Tamonud Modak, Saurabh Kumar, Arghya Pal, Rishab Gupta, Raman Deep Pattanayak, Sudhir Kumar Khandelwal
A 22-year-old male diagnosed with bipolar affective disorder presented to us with a 3(rd) episode mania resistant to both olanzapine and haloperidol as well as electroconvulsive therapy. He, however, responded to chlorpromazine (CPZ) which was also effective as a mood stabilizer. The patient had a relapse of his illness when CPZ was stopped and responded again when it was started. The case demonstrates that CPZ may have a role in as both an anti-manic agent and for the maintenance for bipolar disorders. The possible underlying mechanism for this role is also discussed...
July 2017: Indian Journal of Psychological Medicine
https://www.readbyqxmd.com/read/28852258/olanzapine-induced-skin-eruptions
#17
Nishtha Chawla, Saurabh Kumar, Yatan Pal Singh Balhara
Adverse cutaneous reactions are known to occur with psychotropic medications, which may lead to poor drug compliance. As compared to other group of psychotropics, there is relatively scarce literature on olanzapine-induced skin eruptions. We present a case of a 39-year-old man diagnosed with first episode mania and alcohol dependence syndrome who was started on tablet olanzapine which leads to fixed drug eruptions. Exhaustive investigations were done, all of which came out within normal limits. A diagnosis of fixed drug eruptions was made by the dermatologist...
July 2017: Indian Journal of Psychological Medicine
https://www.readbyqxmd.com/read/28852252/psychosis-following-carbimazole-induced-acute-alteration-of-hyperthyroid-status
#18
Guru S Gowda, Mallikarjun Rao Sagi, Sai Komal, T S Jaisoorya
Abrupt normalization of hyperthyroid state with antithyroid drugs is reported to precipitate psychosis. We report the development of acute psychosis in a 20-year-old woman, following 30 days use of tablet carbimazole 10 mg for hyperthyroidism due to the multinodular goiter. At the time of presentation, she was euthyroid with a resolution of hyperthyroid status both clinically and biochemically. After 20 days treatment with tablet olanzapine 10 mg/day and stoppage of carbimazole, psychotic symptoms remitted completely and she has since remained in a euthyroid state and free from psychotic symptoms...
July 2017: Indian Journal of Psychological Medicine
https://www.readbyqxmd.com/read/28851451/structured-physical-exercise-improves-neuropsychiatric-symptoms-in-acute-dementia-care-a-hospital-based-rct
#19
Tim Fleiner, Hannah Dauth, Marleen Gersie, Wiebren Zijlstra, Peter Haussermann
BACKGROUND: The primary objective of this trial is to investigate the effects of a short-term exercise program on neuropsychiatric signs and symptoms in acute hospital dementia care. METHODS: Within a hospital-based randomized controlled trial, the intervention group conducted a 2-week exercise program with four 20-min exercise sessions on 3 days per week. The control group conducted a social stimulation program. Effects on neuropsychiatric signs and symptoms were measured via the Alzheimer's Disease Cooperative Study-Clinical Global Impression of Change, the Neuropsychiatric Inventory, and the Cohen-Mansfield Agitation Inventory...
August 29, 2017: Alzheimer's Research & Therapy
https://www.readbyqxmd.com/read/28851326/dilemma-of-treating-schizophrenia-during-pregnancy-a-case-series-and-a-review-of-literature
#20
Andreea Teodorescu, Petru Ifteni, Marius Alexandru Moga, Victoria Burtea, Nicusor Bigiu
BACKGROUND: The choice of antipsychotic treatment during pregnancy remains controversial, mainly due to a lack of exposure and outcome data. Randomized clinical trials are practically impossible due to ethical reasons. Our reports describe three cases of closely monitored female patients with schizophrenia who were treated with olanzapine during pregnancy. The novelty of reports is that all patients were previously treated with olanzapine long acting injectable (LAI) for an average period of 3...
August 29, 2017: BMC Psychiatry
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