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Yang R, Wan JL, Pi CQ, Wang TH, Zhu XQ, Zhou SJ. Increased antipsychotic drug concentration in hospitalized patients with mental disorders following COVID-19 infection: a call for attention. Front Psychiatry 2024; 15:1421370. [PMID: 39077630 PMCID: PMC11284031 DOI: 10.3389/fpsyt.2024.1421370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Accepted: 07/01/2024] [Indexed: 07/31/2024] Open
Abstract
Purpose Examine the alterations in antipsychotic concentrations following coronavirus disease-2019 (COVID-19) infection among hospitalized patients with mental disorders and conduct an analysis of the factors influencing these changes. Methods Data were collected from inpatients at Beijing Huilongguan Hospital between December 12, 2022, and January 11, 2023, pre- and post-COVID-19. Based on the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, 329 inpatients with mental disorders were included (3 with incomplete data excluded). Primary outcomes assessed changes in antipsychotic concentrations pre- and post-COVID-19, while secondary outcomes examined factors linked to concentration increases and antipsychotic dose adjustments. Results Clozapine (P < 0.001), aripiprazole (P < 0.001), quetiapine (P = 0.005), olanzapine (P < 0.001), risperidone (P < 0.001), and paliperidone (P < 0.001) concentrations increased post-COVID-19 in patients with mental disorders. Notably, clozapine concentration surpassing pre-infection levels was highest. Clozapine users were more likely to adjust their dose (50.4%) compared to olanzapine (17.5%) and other antipsychotics. Moreover, traditional Chinese patent medicines and antibiotics during COVID-19 infection were associated with antipsychotic reduction or withdrawal (OR = 2.06, P = 0.0247; OR = 7.53, P = 0.0024, respectively). Conclusion Antipsychotic concentrations in hospitalized patients with mental disorders increased after COVID-19 infection, that may be related not only to COVID-19, but also to the use of Chinese patent medicines during infection. The pre-infection concentration and types of antipsychotics, patient's gender, and combination of traditional Chinese medicine or antibiotics, were factors found to correlate with increased drug concentrations and necessitate dose adjustments.
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Affiliation(s)
- Rui Yang
- Beijing Anding Hospital, Capital Medical University, Beijing, China
| | - Jin-Ling Wan
- Zhangjiakou Shalingzi Hospital, Zhangjiakou Mental Health Center, Zhangjiakou, Hebei, China
| | - Chen-Qi Pi
- Psychiatry Department, Shunyi Women’s & Children’s Hospital of Beijing Children’s Hospital, Beijing, China
| | - Tian-Hui Wang
- Psychiatry Department, Shunyi Women’s & Children’s Hospital of Beijing Children’s Hospital, Beijing, China
| | - Xue-Quan Zhu
- Beijing Anding Hospital, Capital Medical University, Beijing, China
| | - Shuang-Jiang Zhou
- Beijing HuiLongGuan Hospital, Peking University HuiLongGuan Clinical Medical School, Beijing, China
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Hart XM, Gründer G, Ansermot N, Conca A, Corruble E, Crettol S, Cumming P, Hefner G, Frajerman A, Howes O, Jukic M, Kim E, Kim S, Manisalco I, Moriguchi S, Müller DJ, Nakajima S, Osugo M, Paulzen M, Ruhe HG, Scherf-Clavel M, Schoretsanitis G, Serretti A, Spina E, Spigset O, Steimer W, Süzen HS, Uchida H, Unterecker S, Vandenberghe F, Verstuyft C, Zernig G, Hiemke C, Eap CB. Optimisation of pharmacotherapy in psychiatry through therapeutic drug monitoring, molecular brain imaging and pharmacogenetic tests: focus on antipsychotics. World J Biol Psychiatry 2024:1-123. [PMID: 38913780 DOI: 10.1080/15622975.2024.2366235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Accepted: 06/06/2024] [Indexed: 06/26/2024]
Abstract
BACKGROUND For psychotic disorders (i.e. schizophrenia), pharmacotherapy plays a key role in controlling acute and long-term symptoms. To find the optimal individual dose and dosage strategy, specialized tools are used. Three tools have been proven useful to personalize drug treatments: therapeutic drug monitoring (TDM) of drug levels, pharmacogenetic testing (PG), and molecular neuroimaging. METHODS In these Guidelines, we provide an in-depth review of pharmacokinetics, pharmacodynamics, and pharmacogenetics for 50 antipsychotics. Over 30 international experts in psychiatry selected studies that have measured drug concentrations in the blood (TDM), gene polymorphisms of enzymes involved in drug metabolism, or receptor/transporter occupancies in the brain (positron emission tomography (PET)). RESULTS Study results strongly support the use of TDM and the cytochrome P450 (CYP) genotyping and/or phenotyping to guide drug therapies. Evidence-based target ranges are available for titrating drug doses that are often supported by PET findings. CONCLUSION All three tools discussed in these Guidelines are essential for drug treatment. TDM goes well beyond typical indications such as unclear compliance and polypharmacy. Despite its enormous potential to optimize treatment effects, minimize side effects and ultimately reduce the global burden of diseases, personalized drug treatment has not yet become the standard of care in psychiatry.
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Affiliation(s)
- X M Hart
- Central Institute of Mental Health, Department of Molecular Neuroimaging, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan
| | - G Gründer
- Central Institute of Mental Health, Department of Molecular Neuroimaging, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
- German Center for Mental Health (DZPG), partner site Mannheim - Heidelberg - Ulm
| | - N Ansermot
- Unit of Pharmacogenetics and Clinical Psychopharmacology, Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, Prilly, Switzerland
| | - A Conca
- Dipartimento di Psichiatria, Comprensorio Sanitario di Bolzano, Bolzano, Italy
| | - E Corruble
- Université Paris-Saclay, AP-HP, Service Hospitalo-Universitaire de Psychiatrie, Hôpital de Bicêtre
- Equipe MOODS, Inserm U1018, CESP (Centre de Recherche en Epidémiologie et Sante des Populations), Le Kremlin-Bicêtre, France
| | - S Crettol
- Unit of Pharmacogenetics and Clinical Psychopharmacology, Centre for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Prilly, Switzerland
| | - P Cumming
- Department of Nuclear Medicine, Bern University Hospital, Bern, Switzerland
- School of Psychology and Counseling, Queensland University of Technology, Brisbane, Australia
| | - G Hefner
- Vitos Clinic for Forensic Psychiatry, Forensic Psychiatry, Eltville, Germany
| | - A Frajerman
- Université Paris-Saclay, AP-HP, Service Hospitalo-Universitaire de Psychiatrie, Hôpital de Bicêtre
- Equipe MOODS, Inserm U1018, CESP (Centre de Recherche en Epidémiologie et Sante des Populations), Le Kremlin-Bicêtre, France
| | - O Howes
- Department of Psychosis Studies, IoPPN, King's College London, De Crespigny Park, London, SE5 8AF, UK
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, Du Cane Road, London W12 0NN, UK
| | - M Jukic
- Department of Physiology, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia and Pharmacogenetics Section, Department of Physiology and Pharmacology, Karolinska Institutet, Solna, Sweden
| | - E Kim
- Department of Psychiatry, Seoul National University College of Medicine, Republic of Korea
| | - S Kim
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Republic of Korea
| | - I Manisalco
- Dipartimento di Psichiatria, Comprensorio Sanitario di Bolzano, Bolzano, Italy
| | - S Moriguchi
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan
| | - D J Müller
- Department of Psychiatry, Psychosomatics and Psychotherapy, Center of Mental Health, University Hospital of Würzburg, Würzburg, Germany
- Pharmacogenetics Research Clinic, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada, and Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
| | - S Nakajima
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan
| | - M Osugo
- Department of Psychosis Studies, IoPPN, King's College London, De Crespigny Park, London, SE5 8AF, UK
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, Du Cane Road, London W12 0NN, UK
| | - M Paulzen
- Department of Psychiatry, Psychotherapy and Psychosomatics, RWTH Aachen University
- JARA - Translational Brain Medicine, Aachen, Germany; Alexianer Center for Mental Health, Aachen, Germany
| | - H G Ruhe
- Department of psychiatry, Radboudumc, Nijmegen, Netherlands; Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, Netherlands
| | - M Scherf-Clavel
- Department of Psychiatry, Psychosomatics and Psychotherapy, Center of Mental Health, University Hospital of Würzburg, Würzburg, Germany
| | - G Schoretsanitis
- Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zurich, 8032 Zurich, Switzerland
| | - A Serretti
- Department of Medicine and Surgery, Kore University of Enna, Italy
| | - E Spina
- Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
| | - O Spigset
- Department of Clinical Pharmacology, St. Olav University Hospital, Trondheim, Norway, and Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - W Steimer
- Institute of Clinical Chemistry and Pathobiochemistry, Technical University Munich, Munich, Germany
| | - H S Süzen
- Department of Pharmaceutic Toxicology, Faculty of Pharmacy, Ankara University, Ankara, Turkey
| | - H Uchida
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan
| | - S Unterecker
- Department of Psychiatry, Psychosomatics and Psychotherapy, Center of Mental Health, University Hospital of Würzburg, Würzburg, Germany
| | - F Vandenberghe
- Unit of Pharmacogenetics and Clinical Psychopharmacology, Centre for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, Prilly, Switzerland
| | - C Verstuyft
- Department of Molecular Genetics, Pharmacogenetics and Hormonology Bicêtre University Hospital Paris-Saclay, Assistance Publique-Hôpitaux de Paris, Le Kremlin Bicêtre, F-94275, France
- CESP, MOODS Team, INSERM UMR 1018, Medicine Faculty, Paris-Saclay University, Le Kremlin Bicêtre, France
| | - G Zernig
- Department of Pharmacology, Medical University Innsbruck; Private Practice for Psychotherapy and Court-Certified Witness, Hall in Tirol, Austria
| | - C Hiemke
- Department of Psychiatry and Psychotherapy and Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center of Mainz, Germany
| | - C B Eap
- Unit of Pharmacogenetics and Clinical Psychopharmacology, Department of Psychiatry, Centre for Psychiatric Neuroscience, Lausanne University Hospital, University of Lausanne, 1008 Prilly, Switzerland
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Geneva, Switzerland
- Center for Research and Innovation in Clinical Pharmaceutical Sciences, University of Lausanne, Lausanne, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, University of Lausanne, Lausanne, Switzerland
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Yang Z, Takeuchi H, Yee JY, See YM, Tang C, Ng BT, Lee J. Once-daily versus divided dosing regimens of clozapine: A cross-sectional study in Singapore. Schizophr Res 2024; 268:66-73. [PMID: 37833207 DOI: 10.1016/j.schres.2023.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 09/12/2023] [Accepted: 10/02/2023] [Indexed: 10/15/2023]
Abstract
INTRODUCTION Clozapine is recognized as the gold standard medication for treatment-resistant schizophrenia. Despite the general recommendation of administering in a divided dosing regimen, clozapine is often prescribed once daily at night in clinical practice. This study aims to compare patient characteristics, psychiatric symptoms, side effects, and plasma concentration of clozapine between once-daily dosing and divided dosing regimens. METHODS This cross-sectional study included 159 participants with treatment-resistant schizophrenia or schizoaffective disorder. Participant's demographic information, anthropometric data, and medical history were collected. Their psychiatric symptoms, cognition, functioning, and side effects were evaluated. RESULTS Once-daily dosing regimen was associated with younger age and competitive employment. Lower clinical symptom severity, better functioning and cognitive performance were observed in the once-daily dosing group. Lower daily dose of clozapine, trough plasma concentrations of clozapine and norclozapine were also significantly associated with once-daily dosing regimen. CONCLUSION The study results support once-daily dosing of clozapine as a viable option to selected patients in clinical practice, as no association of severe symptoms or side effects were associated with once-daily dosing regimen. More studies are needed to examine the relationship between clinical outcomes and clozapine dosing regimen.
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Affiliation(s)
- Zixu Yang
- Research Division, Institute of Mental Health, Singapore
| | - Hiroyoshi Takeuchi
- Department of Neuropsychiatry, Keio University School of Medicine, Japan
| | - Jie Yin Yee
- Research Division, Institute of Mental Health, Singapore
| | - Yuen Mei See
- Research Division, Institute of Mental Health, Singapore
| | - Charmaine Tang
- Department of Psychosis, Institute of Mental Health, Singapore
| | - Boon Tat Ng
- Department of Pharmacy, Institute of Mental Health, Singapore
| | - Jimmy Lee
- Department of Psychosis, Institute of Mental Health, Singapore; Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore.
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Morgenroth CL, Kleymann P, Ripke S, Awasthi S, Wagner E, Oviedo-Salcedo T, Okhuijsen-Pfeifer C, Luykx JJ, van der Horst MZ, Hasan A, Bermpohl F, Gutwinski S, Schreiter S. Polygenetic risk scores and phenotypic constellations of obsessive-compulsive disorder in clozapine-treated schizophrenia. Eur Arch Psychiatry Clin Neurosci 2024; 274:181-193. [PMID: 37020043 PMCID: PMC10786740 DOI: 10.1007/s00406-023-01593-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 03/14/2023] [Indexed: 04/07/2023]
Abstract
Obsessive-compulsive symptoms (OCS) are frequently observed in individuals with schizophrenia (SCZ) treated with clozapine (CLZ). This study aimed to analyze prevalence of OCS and obsessive-compulsive disorder (OCD) in this subgroup and find possible correlations with different phenotypes. Additionally, this is the first study to examine polygenetic risk scores (PRS) in individuals with SCZ and OCS. A multicenter cohort of 91 individuals with SCZ who were treated with CLZ was recruited and clinically and genetically assessed. Symptom severity was examined using the Positive and Negative Symptom Scale (PANSS), Clinical Global Impression Scale (CGI), the Calgary Depression Scale for Schizophrenia (CDSS), Global Assessment of Functioning Scale (GAF) and Yale-Brown Obsessive-Compulsive Scale (Y-BOCS). Participants were divided into subgroups based on phenotypic OCS or OCD using Y-BOCS scores. Genomic-wide data were generated, and PRS analyses were performed to evaluate the association between either phenotypic OCD or OCS severity and genotype-predicted predisposition for OCD, SCZ, cross-disorder, and CLZ/norclozapine (NorCLZ) ratio, CLZ metabolism and NorCLZ metabolism. OCS and OCD were frequent comorbidities in our sample of CLZ-treated SCZ individuals, with a prevalence of 39.6% and 27.5%, respectively. Furthermore, the Y-BOCS total score correlated positively with the duration of CLZ treatment in years (r = 0.28; p = 0.008) and the PANSS general psychopathology subscale score (r = 0.23; p = 0.028). A significant correlation was found between OCD occurrence and PRS for CLZ metabolism. We found no correlation between OCS severity and PRS for CLZ metabolism. We found no correlation for either OCD or OCS and PRS for OCD, cross-disorder, SCZ, CLZ/NorCLZ ratio or NorCLZ metabolism. Our study was able to replicate previous findings on clinical characteristics of CLZ-treated SCZ individuals. OCS is a frequent comorbidity in this cohort and is correlated with CLZ treatment duration in years and PANSS general psychopathology subscale score. We found a correlation between OCD and PRS for CLZ metabolism, which should be interpreted as incidental for now. Future research is necessary to replicate significant findings and to assess possible genetic predisposition of CLZ-treated individuals with SCZ to OCS/OCD. Limitations attributed to the small sample size or the inclusion of subjects on co-medication must be considered. If the association between OCD and PRS for CLZ metabolism can be replicated, it should be further evaluated if CYP1A2 alteration, respectively lower CLZ plasma level, is relevant for OCD development.
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Affiliation(s)
- Carla Lou Morgenroth
- Department of Psychiatry and Neurosciences, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany.
| | - Philipp Kleymann
- Department of Psychiatry and Neurosciences, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany
| | - Stephan Ripke
- Department of Psychiatry and Neurosciences, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany
| | - Swapnil Awasthi
- Department of Psychiatry and Neurosciences, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany
| | - Elias Wagner
- Department of Psychiatry and Psychotherapy, University Hospital-LMU Munich, Munich, Germany
| | - Tatiana Oviedo-Salcedo
- Department of Psychiatry and Psychotherapy, University Hospital-LMU Munich, Munich, Germany
| | - Cynthia Okhuijsen-Pfeifer
- Department of Psychiatry, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Jurjen J Luykx
- Department of Psychiatry, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Brain Center Rudolf Magnus, Department of Translational Neuroscience, University Medical Center Utrecht, Utrecht, The Netherlands
- GGNet Mental Health, Warnsveld, The Netherlands
| | - Marte Z van der Horst
- Department of Psychiatry, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- GGNet Mental Health, Warnsveld, The Netherlands
| | - Alkomiet Hasan
- Department of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, University of Augsburg, Bezirkskrankenhaus Augsburg, Augsburg, Germany
| | - Felix Bermpohl
- Department of Psychiatry and Neurosciences, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany
| | - Stefan Gutwinski
- Department of Psychiatry and Neurosciences, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany
- Department of Psychiatry, St. Hedwig-Krankenhaus, Charité-Universitätsmedizin, Berlin, Germany
| | - Stefanie Schreiter
- Department of Psychiatry and Neurosciences, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany
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Krejčí V, Murínová I, Slanař O, Šíma M. Evidence for Therapeutic Drug Monitoring of Atypical Antipsychotics. Prague Med Rep 2024; 125:101-129. [PMID: 38761044 DOI: 10.14712/23362936.2024.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2024] Open
Abstract
Second-generation antipsychotics (SGAs), also known as atypical antipsychotics, are a newer class of antipsychotic drugs used to treat schizophrenia, bipolar disorder, and related psychiatric conditions. The plasma concentration of antipsychotic drugs is a valid measure of the drug at its primary target structure in the brain, and therefore determines the efficacy and safety of these drugs. However, despite the well-known high variability in pharmacokinetics of these substances, psychiatric medication is usually administered in uniform dosage schedules. Therapeutic drug monitoring (TDM), as the specific method that can help personalised medicine in dose adjustment according to the characteristics of the individual patient, minimizing the risk of toxicity, monitoring adherence, and increasing cost-effectiveness in the treatment, thus seems to be an elegant tool to solve this problem. Non-response to therapeutic doses, uncertain adherence to medication, suboptimal tolerability, or pharmacokinetic drug-drug interactions are typical indications for TDM of SGAs. This review aims to summarize an overview of the current knowledge and evidence of the possibilities to tailor the dosage of selected SGAs using TDM, including the necessary pharmacokinetic parameters for personalised pharmacotherapy.
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Affiliation(s)
- Veronika Krejčí
- Department of Clinical Pharmacy, Military University Hospital Prague, Prague, Czech Republic.
- Institute of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic.
| | - Irena Murínová
- Department of Applied Pharmacy, Faculty of Pharmacy, Masaryk University, Brno, Czech Republic
- Department of Clinical Pharmacy, Military University Hospital Prague, Prague, Czech Republic
| | - Ondřej Slanař
- Institute of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Martin Šíma
- Institute of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
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Panić B, Jovanović M, Lukić V, Vučićević K, Miljković B, Milovanović S. Association of clozapine and norclozapine levels with patient and therapy characteristics-focus on interaction with valproic acid. Eur J Clin Pharmacol 2023; 79:1557-1564. [PMID: 37733278 DOI: 10.1007/s00228-023-03569-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 09/15/2023] [Indexed: 09/22/2023]
Abstract
PURPOSE The goal of the study was to examine clozapine (CLZ) and norclozapine (NCLZ) therapeutic drug monitoring (TDM) data and associated sources of pharmacokinetic variability, particularly the impact of valproic acid (VPA) use. METHODS This study included 126 patients with psychiatric disorders on mono- or co-therapy with CLZ. Patients' data during routine TDM were collected retrospectively from clinical records. The descriptive and statistical analysis was computed using IBM SPSS Statistics software (version 22, NY, USA). Multiple linear regression, based on the last observations, was used to assess correlation between demographic characteristics, life habits and co-therapy with dose-corrected serum levels (C/D) of CLZ and NCLZ, as well as CLZ/NCLZ. RESULTS A total of 295 CLZ concentrations were measured in 126 patients, with a mean of 275.5 ± 174.4 µg/L, while 124 NCLZ concentrations were determined in 74 patients, with a mean of 194.6 ± 149.8 µg/L. A statistically significant effect on ln-transformed CLZ C/D was confirmed for sex and smoking, whereas sex, smoking and VPA therapy were associated with ln-transformed NCLZ C/D. According to the final models, lower values of NCLZ C/D for about 45.9% can be expected in patients receiving VPA. Concomitant use of VPA was the only factor detected to contribute in CLZ/NCLZ variability. CONCLUSION The results of this study may help clinicians interpret TDM data and optimize CLZ dosing regimens, especially in patients concomitantly treated with VPA. Our results show that VPA primarily decreases NCLZ levels, while alteration of the parent drug is not statistically significant.
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Affiliation(s)
- Bojana Panić
- Department of Pharmacokinetics and Clinical Pharmacy, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Marija Jovanović
- Department of Pharmacokinetics and Clinical Pharmacy, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, 11221, Belgrade, Serbia.
| | - Vera Lukić
- Institute of Forensic Medicine "Milovan Milovanović", Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Katarina Vučićević
- Department of Pharmacokinetics and Clinical Pharmacy, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Branislava Miljković
- Department of Pharmacokinetics and Clinical Pharmacy, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Srđan Milovanović
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
- Clinic for Psychiatry, University Clinical Center of Serbia, Belgrade, Serbia
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7
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Horvat M, Kadija M, Ščavničar A, Živković M, Šagud M, Lovrić M. Association of smoking cigarettes, age, and sex with serum concentrations of olanzapine in patients with schizophrenia. Biochem Med (Zagreb) 2023; 33:030702. [PMID: 37841771 PMCID: PMC10564155 DOI: 10.11613/bm.2023.030702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 07/11/2023] [Indexed: 10/17/2023] Open
Abstract
Introduction Olanzapine is an atypical antipsychotic drug which is effective in the treatment of schizophrenia. Cigarette smoking, age, and sex could be related to the pharmacokinetics and serum concentrations of olanzapine in patients with schizophrenia. The aim of the study was to examine whether there was a significant difference in the serum olanzapine concentrations with regard to the mentioned factors. Materials and methods A total of 58 outpatients with schizophrenia (37 smokers, 42 men, 35 older than 40 years) participated in the study. Blood was sampled in serum tubes just before taking the next dose of olanzapine. Olanzapine was extracted by liquid-liquid extraction and was measured by an in-house high-performance liquid chromatography method on Shimadzu Prominence HPLC System with diode array detector SPD-M20A (Shimadzu, Kyoto, Japan). The results were expressed as the ratio of concentration to the daily dose of olanzapine (C/D). Non-parametric statistical tests were used to analyse differences between variables. Results The median C/D of olanzapine (interquartile range) in smokers was 6.0 (3.4-10.2) nmol/L/mg and in non-smokers 10.1 (5.9-17.6) nmol/L/mg; P = 0.007. The median C/D of olanzapine in patients younger than 40 years was 5.6 (4.5-10.2) nmol/L/mg and in patients older than 40 years 8.4 (5.6-13.0) nmol/L/mg; P = 0.105. The median C/D of olanzapine in male patients was 6.6 (4.6-10.4) nmol/L/mg and in female patients 9.0 (5.9-15.3) nmol/L/mg; P = 0.064. Conclusions The serum olanzapine concentration was significantly lower in smoking than in non-smoking patients with schizophrenia. No significant difference was demonstrated with regard to age and sex.
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Affiliation(s)
- Mihovil Horvat
- Faculty of pharmacy and biochemistry, University of Zagreb, Zagreb, Croatia
| | - Mate Kadija
- Faculty of pharmacy and biochemistry, University of Zagreb, Zagreb, Croatia
| | - Andrijana Ščavničar
- Department of laboratory diagnostics, University hospital centre Zagreb, Zagreb, Croatia
| | - Maja Živković
- Clinic for psychiatry, Clinical hospital Vrapče, Zagreb, Croatia
| | - Marina Šagud
- Department of psychiatry and psychological medicine, University hospital centre Zagreb, Zagreb, Croatia
- School of medicine, University of Zagreb, Zagreb, Croatia
| | - Mila Lovrić
- Faculty of pharmacy and biochemistry, University of Zagreb, Zagreb, Croatia
- Department of laboratory diagnostics, University hospital centre Zagreb, Zagreb, Croatia
- School of medicine, University of Zagreb, Zagreb, Croatia
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8
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Castaldelli-Maia JM, Camargos de Oliveira V, Irber FM, Blaas IK, Angerville B, Sousa Martins-da-Silva A, Koch Gimenes G, Waisman Campos M, Torales J, Ventriglio A, Guillois C, El Ouazzani H, Gazaix L, Favré P, Dervaux A, Apter G. Psychopharmacology of smoking cessation medications: focus on patients with mental health disorders. Int Rev Psychiatry 2023; 35:397-417. [PMID: 38299651 DOI: 10.1080/09540261.2023.2249084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 08/14/2023] [Indexed: 02/02/2024]
Abstract
The adverse effects of smoking cessation in individuals with mental health disorders have been a point of concern, and progress in the development of treatment has been slow. The primary first-line treatments for smoking cessation are Nicotine Replacement Therapy, Bupropion, Varenicline, and behavioural support. Nortriptyline and Clonidine are second-line treatments used when the first-line treatments are not effective or are contraindicated. Smoking cessation medications have been shown to be effective in reducing nicotine cravings and withdrawal symptoms and promoting smoking cessation among patients living with mental disorders. However, these medications may have implications for patients' mental health and need to be monitored closely. The efficacy and side effects of these medications may vary depending on the patient's psychiatric condition, medication regimen, substance use, or medical comorbidities. The purpose of this review is to synthesise the pharmacokinetics, pharmacodynamics, therapeutic effects, adverse effects, and pharmacological interactions of first- and second-line smoking cessation drugs, with an emphasis on patients suffering from mental illnesses. Careful consideration of the risks and benefits of using smoking cessation medications is necessary, and treatment plans must be tailored to individual patients' needs. Monitoring symptoms and medication regimens is essential to ensure optimal treatment outcomes.
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Affiliation(s)
- João Mauricio Castaldelli-Maia
- Cellule de Recherche Clinique, Groupe Hospitalier du Havre, Le Havre, France
- Department of Psychiatry, Medical School, University of São Paulo, São Paulo, Brazil
| | | | | | - Israel K Blaas
- Perdizes Institute (IPer), Clinics Hospital (HCFMUSP), Medical School, University of São Paulo, São Paulo, Brazil
| | | | | | - Gislaine Koch Gimenes
- Perdizes Institute (IPer), Clinics Hospital (HCFMUSP), Medical School, University of São Paulo, São Paulo, Brazil
| | - Marcela Waisman Campos
- Department of Cognitive Neurology, Neuropsychiatry, and Neuropsychology, FLENI, Buenos Aires, Argentina
| | - Julio Torales
- Department of Psychiatry, National University of Asuncion, San Lorenzo, Paraguay
- Regional Institute of Health Research, Universidad Nacional de Caaguazú, Coronel Oviedo, Paraguay
- School of Health Sciences, Universidad Sudamericana, Pedro Juan Caballero, Paraguay
| | - Antonio Ventriglio
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Carine Guillois
- Cellule de Recherche Clinique, Groupe Hospitalier du Havre, Le Havre, France
| | - Houria El Ouazzani
- Cellule de Recherche Clinique, Groupe Hospitalier du Havre, Le Havre, France
| | - Léna Gazaix
- Cellule de Recherche Clinique, Groupe Hospitalier du Havre, Le Havre, France
| | - Pascal Favré
- Établissement Public de Santé Mentale, Neuilly sur Marne, France
| | - Alain Dervaux
- Établissement Public de Santé Barthélémy Durand, Étampes, France
- Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Gisèle Apter
- Cellule de Recherche Clinique, Groupe Hospitalier du Havre, Le Havre, France
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
- Établissement Public de Santé Mentale, Neuilly sur Marne, France
- Societé de l'Information Psychiatrique, Bron, France
- University of Rouen Normandy, Rouen, France
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9
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Demirbugen Oz M, Ozdemir F, Tok KC, Dural E, Kir Y, Ulusoy M, Gumustas M, Baskak B, Suzen HS. The potential role of por*28 and cyp1a2*f genetic variations and lifestyle factors on clozapine and n-desmethyl clozapine plasma levels in schizophrenia patients. Expert Opin Drug Metab Toxicol 2023. [PMID: 37269349 DOI: 10.1080/17425255.2023.2221849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 05/24/2023] [Indexed: 06/05/2023]
Abstract
BACKGROUND Despite its advantages over other antipsychotics, for treatment-resistant schizophrenia, clinical use of Clozapine (CLZ) is challenging by its narrow therapeutic index and potentially life-threatening dose-related adverse effects. RESEARCH DESIGN AND METHODS As the potential role in CLZ metabolism is assigned to CYP1A2 enzyme and consequently Cytochrome P450 oxidoreductase (POR) their genetic variations might help to determine CLZ levels in schizophrenia patients. For this purpose, 112 schizophrenia patients receiving CLZ were included in the current study. Plasma CLZ and N-desmethylclozapine (DCLZ) levels were analyzed by using HPLC and genetic variations were identified with the PCR-RFLP method. RESULTS The patients' CYP1A2 and POR genotypes seemed to not affect plasma CLZ and DCLZ levels whereas in the subgroup analysis, POR × 28 genotype significantly influenced simple and adjusted plasma CLZ and DLCZ levels concerning smoking habit and caffeine consumption. CONCLUSIONS The findings of the present study highlight the importance of both genetic and non-genetic factors (smoking and caffeine consumption) for the individualization of the CLZ treatment. In addition to that, it suggests that the added utility of not only the CLZ metabolizing enzymes but also POR, which is crucial for proper CYP activity, to guide CLZ dosing might be useful for clinical decision-making.
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Affiliation(s)
- Merve Demirbugen Oz
- Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Ankara University, Ankara, Turkey
| | - Fezile Ozdemir
- Dr Fazil Kucuk Faculty of Medicine, Eastern Mediterranean University, North, Cyprus, Turkey
| | - Kenan Can Tok
- Institute of Forensic Sciences, Department of Forensic Toxicology, Ankara University, Ankara, Turkey
| | - Emrah Dural
- Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Sivas Cumhuriyet University, Sivas, Turkey
| | - Yagmur Kir
- Bursa Acibadem Hospital, Department of Psychiatry, Bursa, Turkey
| | - Muge Ulusoy
- School of Medicine, Department of Psychiatry, Ankara University, Ankara, Turkey
| | - Mehmet Gumustas
- Institute of Forensic Sciences, Department of Forensic Toxicology, Ankara University, Ankara, Turkey
| | - Bora Baskak
- School of Medicine, Department of Psychiatry, Ankara University, Ankara, Turkey
| | - H Sinan Suzen
- Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Ankara University, Ankara, Turkey
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10
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Veldhuizen S, Behal A, Zawertailo L, Melamed O, Agarwal M, Selby P. Outcomes Among People With Schizophrenia Participating in General-Population Smoking Cessation Treatment: An Observational Study. CANADIAN JOURNAL OF PSYCHIATRY. REVUE CANADIENNE DE PSYCHIATRIE 2023; 68:359-369. [PMID: 36760089 PMCID: PMC10192823 DOI: 10.1177/07067437231155693] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
OBJECTIVE People with schizophrenia are much more likely than others to smoke tobacco, raising risks of disease and premature mortality. These individuals are also less likely to quit successfully after treatment, but the few existing clinical and observational studies have been limited by small sample sizes, and have generally considered specialized treatment approaches. In this analysis, we examine outcomes, service use, and potential explanatory variables in a large sample of people with schizophrenia treated in a general-population cessation program. METHOD Our sample comprised 3,011 people with schizophrenia and 77,790 controls receiving free nicotine replacement therapy through 400 clinics and health centres. We analysed self-reported 7-day abstinence or reduction at 6-month follow-up, as well as the number of visits attended and self-reported difficulties in quitting. We adjusted for demographic, socioeconomic, and health variables, and used multiple imputation to address missing data. RESULTS Abstinence was achieved by 16.2% (95% confidence interval [CI], 14.5% to 17.8%) of people with schizophrenia and 26.4% (95% CI, 26.0% to 26.7%) of others (absolute difference = 10.2%; 95% CI, 8.5% to 11.9%; P < 0.001). After adjustment, this difference was reduced to 7.3% (95% CI, 5.4% to 9.3%; P < 0.001). Reduction in use was reported by 11.8% (95% CI, 10.3% to 13.3%) and 12.5% (95% CI, 12.2% to 12.8%), respectively; this difference was nonsignificant after adjustment. People with schizophrenia attended more clinic visits (incidence rate ratio [IRR] = 1.15, 95% CI = 1.12% to 1.18%, P < 0.001) and reported more difficulties related to "being around other smokers" (odds ratio [OR] = 1.28; 95% CI, 1.11% to 1.47%; P = 0.001). CONCLUSION There is abundant demand for tobacco cessation treatment in this population. Outcomes were substantially poorer for people with schizophrenia, and this difference was not explained by covariates. Cessation remained much better than for unaided quit attempts, however, and engagement was high, demonstrating that people with schizophrenia benefit from nonspecialized pharmacological treatment programs.
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Affiliation(s)
- Scott Veldhuizen
- Nicotine Dependence Services, Centre for Addiction and Mental Health, Toronto, Canada
| | - Anjali Behal
- Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
| | - Laurie Zawertailo
- Nicotine Dependence Services, Centre for Addiction and Mental Health, Toronto, Canada
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, Canada
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada
| | - Osnat Melamed
- Nicotine Dependence Services, Centre for Addiction and Mental Health, Toronto, Canada
| | - Mahavir Agarwal
- Department of Psychiatry, University of Toronto, Toronto, Canada
- Schizophrenia Division, Centre for Addiction and Mental Health, Toronto, Canada
| | - Peter Selby
- Nicotine Dependence Services, Centre for Addiction and Mental Health, Toronto, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada
- Department of Psychiatry, University of Toronto, Toronto, Canada
- Department of Family and Community Medicine, University of Toronto, Toronto, Canada
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Canada
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11
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Khusial R, Bies RR, Akil A. Deep Learning Methods Applied to Drug Concentration Prediction of Olanzapine. Pharmaceutics 2023; 15:pharmaceutics15041139. [PMID: 37111625 PMCID: PMC10145228 DOI: 10.3390/pharmaceutics15041139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/17/2023] [Accepted: 03/31/2023] [Indexed: 04/07/2023] Open
Abstract
Pharmacometrics and the utilization of population pharmacokinetics play an integral role in model-informed drug discovery and development (MIDD). Recently, there has been a growth in the application of deep learning approaches to aid in areas within MIDD. In this study, a deep learning model, LSTM-ANN, was developed to predict olanzapine drug concentrations from the CATIE study. A total of 1527 olanzapine drug concentrations from 523 individuals along with 11 patient-specific covariates were used in model development. The hyperparameters of the LSTM-ANN model were optimized through a Bayesian optimization algorithm. A population pharmacokinetic model using the NONMEM model was constructed as a reference to compare to the performance of the LSTM-ANN model. The RMSE of the LSTM-ANN model was 29.566 in the validation set, while the RMSE of the NONMEM model was 31.129. Permutation importance revealed that age, sex, and smoking were highly influential covariates in the LSTM-ANN model. The LSTM-ANN model showed potential in the application of drug concentration predictions as it was able to capture the relationships within a sparsely sampled pharmacokinetic dataset and perform comparably to the NONMEM model.
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Affiliation(s)
- Richard Khusial
- Department of Pharmaceutical Sciences, College of Pharmacy, Mercer University, Atlanta, GA 30341, USA
| | - Robert R. Bies
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, Buffalo, NY 14214, USA
- Institute for Artificial Intelligence and Data Science, University at Buffalo, Buffalo, NY 14260, USA
| | - Ayman Akil
- Department of Pharmaceutical Sciences, College of Pharmacy, Mercer University, Atlanta, GA 30341, USA
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12
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Smoking Habits and Attitudes toward Smoking in Patients with Severe Mental Illness in Residential Facilities in Insular Greece. Healthcare (Basel) 2023; 11:healthcare11050642. [PMID: 36900647 PMCID: PMC10001183 DOI: 10.3390/healthcare11050642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 02/14/2023] [Accepted: 02/19/2023] [Indexed: 02/24/2023] Open
Abstract
Smoking may contribute to increased cardiovascular morbidity and mortality in patients with schizophrenia spectrum disorders. The objective of the present study is to explore the attitudes toward smoking in patients with severe mental illness in residential rehabilitation facilities in insular Greece. The patients (n = 103) were studied with the use of a questionnaire based on a semi-structured interview. Most of the participants (68.3%) were current regular smokers, had been smoking for 29 years and started smoking at an early age. The majority (64.8%) reported having tried to quit smoking in the past, and only half had been advised by a physician to quit. The patients agreed on the rules for smoking and believed that the staff should avoid smoking in the facility. The years of smoking were statistically significantly correlated to the educational level and the treatment with antidepressant medication. A statistical analysis showed that longer stay period in the facilities correlates with current smoking, an effort to quit and increased belief that smoking causes harm to health. Further research on the attitudes of patients in residential facilities toward smoking is needed, which could guide interventions for smoking cessation and should be assumed by all health professionals who are involved in the care of those patients.
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13
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Srour A, Eltorki Y, Malik H, Alabdulla MA, Hassan MH, Ahmed Al Subaiey M, Michael Haddad P. Patients' and primary carers' views on clozapine treatment for schizophrenia: A cross-sectional study in Qatar. Saudi Pharm J 2023; 31:214-221. [PMID: 36942276 PMCID: PMC10023528 DOI: 10.1016/j.jsps.2022.12.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 12/10/2022] [Indexed: 12/23/2022] Open
Abstract
Subjective views of clozapine treatment among patients with schizophrenia in the Middle East and North African MENA Region have not previously been assessed. Globally, few studies have assessed the views of carers to clozapine treatment. We conducted a cross-sectional survey, using a clinician administered structured interview, of patients with schizophrenia/schizoaffective disorder prescribed clozapine in Qatar, and their primary carers. Participants were asked to rate clozapine against prior their antipsychotic treatment in terms of specific benefits and side effects. Forty-two patients and 33 carers participated in the study. Of the patients, two thirds were male, approximately half were Qatari and the mean age was 33.9 years. Patients and carers rated clozapine as superior to prior antipsychotic treatment on all 7 potential benefits inquired about. The greatest perceived benefit was improved mood. Patients rated clozapine as less likely to cause extrapyramidal side effects but more likely to cause 18 other potential side effects compared to prior antipsychotic treatment, with the greatest difference being for nocturnal salivation, increased appetite, and constipation. Nearly half of patients (48 %) and two thirds of carers (64 %) stated that they would have preferred to start clozapine earlier in their illness. Sixty percent of patients and 37 % of carers regarded the information that they had received from health professionals on clozapine as inadequate. Less than half of patients and approximately-two thirds of carers had adequate knowledge of haematological monitoring for clozapine. Generally, there were significantly positive correlation between patients and carers regarding the overall side effects of clozapine treatment. Likewise, improvement in hearing voices paranoid thoughts correlated with improved quality of life. In summary, the results show that patients and carers appreciate the benefits of clozapine despite its side effects being problematic. The results support clozapine being offered earlier in treatment and services providing more information on clozapine to patients and carers.
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Affiliation(s)
- Ahmad Srour
- Department of Psychiatry, Hamad Medical Corporation, Qatar
| | - Yassin Eltorki
- Department of Psychiatry, Hamad Medical Corporation, Qatar
- College of Pharmacy, Qatar University, Qatar
- Corresponding author at: Clinical Pharmacy Specialist, Mental Health Service, Pharmacy Department Hamad Medical Corporation, P.O.Box 3050, Doha, Qatar.
| | - Humayun Malik
- Department of Psychiatry, Hamad Medical Corporation, Qatar
| | - Majid A Alabdulla
- Department of Psychiatry, Hamad Medical Corporation, Qatar
- College of Medicine, Qatar University, Qatar
| | | | | | - Peter Michael Haddad
- Department of Psychiatry, Hamad Medical Corporation, Qatar
- College of Medicine, Qatar University, Qatar
- Division of Psychology and Mental Health, School of Health Sciences, University of Manchester, Manchester, UK
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14
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Ansari S, Kelbrick M, Paduret G, Diaz N, Menzel R, Rogers R, Wareham C, Griffiths C, Jugon S, Tidy K, Johnson S, Mann N, Tanner J, Millward T, Latif S. Clinical practice guideline for clozapine use in patients with
COVID
‐19. PROGRESS IN NEUROLOGY AND PSYCHIATRY 2023. [DOI: 10.1002/pnp.779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- Saba Ansari
- Dr Ansari is a Specialty Registrar (ST5); Dr Kelbrick is a Consultant Psychiatrist; Dr Paduret is a Core Trainee Year 2; Ms Diaz is a Physical Health Advanced Nurse Practitioner; Ms Menzel is a Pharmacist; Ms Rowena Rogers is a Community Mental Health Nurse; Ms Wareham is a Community Mental Health Nurse; Dr Griffiths is a Senior Research and Evaluation Fellow; Ms Jugon is a EIP operations Manager; Ms Tidy is a CMHT Operations Manager; Ms Johnson is a Ward Matron; Dr Mann, Dr Tanner, Dr Millward, Dr
| | - Marlene Kelbrick
- Dr Ansari is a Specialty Registrar (ST5); Dr Kelbrick is a Consultant Psychiatrist; Dr Paduret is a Core Trainee Year 2; Ms Diaz is a Physical Health Advanced Nurse Practitioner; Ms Menzel is a Pharmacist; Ms Rowena Rogers is a Community Mental Health Nurse; Ms Wareham is a Community Mental Health Nurse; Dr Griffiths is a Senior Research and Evaluation Fellow; Ms Jugon is a EIP operations Manager; Ms Tidy is a CMHT Operations Manager; Ms Johnson is a Ward Matron; Dr Mann, Dr Tanner, Dr Millward, Dr
| | - Gabriela Paduret
- Dr Ansari is a Specialty Registrar (ST5); Dr Kelbrick is a Consultant Psychiatrist; Dr Paduret is a Core Trainee Year 2; Ms Diaz is a Physical Health Advanced Nurse Practitioner; Ms Menzel is a Pharmacist; Ms Rowena Rogers is a Community Mental Health Nurse; Ms Wareham is a Community Mental Health Nurse; Dr Griffiths is a Senior Research and Evaluation Fellow; Ms Jugon is a EIP operations Manager; Ms Tidy is a CMHT Operations Manager; Ms Johnson is a Ward Matron; Dr Mann, Dr Tanner, Dr Millward, Dr
| | - Natasha Diaz
- Dr Ansari is a Specialty Registrar (ST5); Dr Kelbrick is a Consultant Psychiatrist; Dr Paduret is a Core Trainee Year 2; Ms Diaz is a Physical Health Advanced Nurse Practitioner; Ms Menzel is a Pharmacist; Ms Rowena Rogers is a Community Mental Health Nurse; Ms Wareham is a Community Mental Health Nurse; Dr Griffiths is a Senior Research and Evaluation Fellow; Ms Jugon is a EIP operations Manager; Ms Tidy is a CMHT Operations Manager; Ms Johnson is a Ward Matron; Dr Mann, Dr Tanner, Dr Millward, Dr
| | - Rose Menzel
- Dr Ansari is a Specialty Registrar (ST5); Dr Kelbrick is a Consultant Psychiatrist; Dr Paduret is a Core Trainee Year 2; Ms Diaz is a Physical Health Advanced Nurse Practitioner; Ms Menzel is a Pharmacist; Ms Rowena Rogers is a Community Mental Health Nurse; Ms Wareham is a Community Mental Health Nurse; Dr Griffiths is a Senior Research and Evaluation Fellow; Ms Jugon is a EIP operations Manager; Ms Tidy is a CMHT Operations Manager; Ms Johnson is a Ward Matron; Dr Mann, Dr Tanner, Dr Millward, Dr
| | - Rowena Rogers
- Dr Ansari is a Specialty Registrar (ST5); Dr Kelbrick is a Consultant Psychiatrist; Dr Paduret is a Core Trainee Year 2; Ms Diaz is a Physical Health Advanced Nurse Practitioner; Ms Menzel is a Pharmacist; Ms Rowena Rogers is a Community Mental Health Nurse; Ms Wareham is a Community Mental Health Nurse; Dr Griffiths is a Senior Research and Evaluation Fellow; Ms Jugon is a EIP operations Manager; Ms Tidy is a CMHT Operations Manager; Ms Johnson is a Ward Matron; Dr Mann, Dr Tanner, Dr Millward, Dr
| | - Claire Wareham
- Dr Ansari is a Specialty Registrar (ST5); Dr Kelbrick is a Consultant Psychiatrist; Dr Paduret is a Core Trainee Year 2; Ms Diaz is a Physical Health Advanced Nurse Practitioner; Ms Menzel is a Pharmacist; Ms Rowena Rogers is a Community Mental Health Nurse; Ms Wareham is a Community Mental Health Nurse; Dr Griffiths is a Senior Research and Evaluation Fellow; Ms Jugon is a EIP operations Manager; Ms Tidy is a CMHT Operations Manager; Ms Johnson is a Ward Matron; Dr Mann, Dr Tanner, Dr Millward, Dr
| | - Chris Griffiths
- Dr Ansari is a Specialty Registrar (ST5); Dr Kelbrick is a Consultant Psychiatrist; Dr Paduret is a Core Trainee Year 2; Ms Diaz is a Physical Health Advanced Nurse Practitioner; Ms Menzel is a Pharmacist; Ms Rowena Rogers is a Community Mental Health Nurse; Ms Wareham is a Community Mental Health Nurse; Dr Griffiths is a Senior Research and Evaluation Fellow; Ms Jugon is a EIP operations Manager; Ms Tidy is a CMHT Operations Manager; Ms Johnson is a Ward Matron; Dr Mann, Dr Tanner, Dr Millward, Dr
| | - Sue Jugon
- Dr Ansari is a Specialty Registrar (ST5); Dr Kelbrick is a Consultant Psychiatrist; Dr Paduret is a Core Trainee Year 2; Ms Diaz is a Physical Health Advanced Nurse Practitioner; Ms Menzel is a Pharmacist; Ms Rowena Rogers is a Community Mental Health Nurse; Ms Wareham is a Community Mental Health Nurse; Dr Griffiths is a Senior Research and Evaluation Fellow; Ms Jugon is a EIP operations Manager; Ms Tidy is a CMHT Operations Manager; Ms Johnson is a Ward Matron; Dr Mann, Dr Tanner, Dr Millward, Dr
| | - Katy Tidy
- Dr Ansari is a Specialty Registrar (ST5); Dr Kelbrick is a Consultant Psychiatrist; Dr Paduret is a Core Trainee Year 2; Ms Diaz is a Physical Health Advanced Nurse Practitioner; Ms Menzel is a Pharmacist; Ms Rowena Rogers is a Community Mental Health Nurse; Ms Wareham is a Community Mental Health Nurse; Dr Griffiths is a Senior Research and Evaluation Fellow; Ms Jugon is a EIP operations Manager; Ms Tidy is a CMHT Operations Manager; Ms Johnson is a Ward Matron; Dr Mann, Dr Tanner, Dr Millward, Dr
| | - Sara Johnson
- Dr Ansari is a Specialty Registrar (ST5); Dr Kelbrick is a Consultant Psychiatrist; Dr Paduret is a Core Trainee Year 2; Ms Diaz is a Physical Health Advanced Nurse Practitioner; Ms Menzel is a Pharmacist; Ms Rowena Rogers is a Community Mental Health Nurse; Ms Wareham is a Community Mental Health Nurse; Dr Griffiths is a Senior Research and Evaluation Fellow; Ms Jugon is a EIP operations Manager; Ms Tidy is a CMHT Operations Manager; Ms Johnson is a Ward Matron; Dr Mann, Dr Tanner, Dr Millward, Dr
| | - Nick Mann
- Dr Ansari is a Specialty Registrar (ST5); Dr Kelbrick is a Consultant Psychiatrist; Dr Paduret is a Core Trainee Year 2; Ms Diaz is a Physical Health Advanced Nurse Practitioner; Ms Menzel is a Pharmacist; Ms Rowena Rogers is a Community Mental Health Nurse; Ms Wareham is a Community Mental Health Nurse; Dr Griffiths is a Senior Research and Evaluation Fellow; Ms Jugon is a EIP operations Manager; Ms Tidy is a CMHT Operations Manager; Ms Johnson is a Ward Matron; Dr Mann, Dr Tanner, Dr Millward, Dr
| | - James Tanner
- Dr Ansari is a Specialty Registrar (ST5); Dr Kelbrick is a Consultant Psychiatrist; Dr Paduret is a Core Trainee Year 2; Ms Diaz is a Physical Health Advanced Nurse Practitioner; Ms Menzel is a Pharmacist; Ms Rowena Rogers is a Community Mental Health Nurse; Ms Wareham is a Community Mental Health Nurse; Dr Griffiths is a Senior Research and Evaluation Fellow; Ms Jugon is a EIP operations Manager; Ms Tidy is a CMHT Operations Manager; Ms Johnson is a Ward Matron; Dr Mann, Dr Tanner, Dr Millward, Dr
| | - Tim Millward
- Dr Ansari is a Specialty Registrar (ST5); Dr Kelbrick is a Consultant Psychiatrist; Dr Paduret is a Core Trainee Year 2; Ms Diaz is a Physical Health Advanced Nurse Practitioner; Ms Menzel is a Pharmacist; Ms Rowena Rogers is a Community Mental Health Nurse; Ms Wareham is a Community Mental Health Nurse; Dr Griffiths is a Senior Research and Evaluation Fellow; Ms Jugon is a EIP operations Manager; Ms Tidy is a CMHT Operations Manager; Ms Johnson is a Ward Matron; Dr Mann, Dr Tanner, Dr Millward, Dr
| | - Shahid Latif
- Dr Ansari is a Specialty Registrar (ST5); Dr Kelbrick is a Consultant Psychiatrist; Dr Paduret is a Core Trainee Year 2; Ms Diaz is a Physical Health Advanced Nurse Practitioner; Ms Menzel is a Pharmacist; Ms Rowena Rogers is a Community Mental Health Nurse; Ms Wareham is a Community Mental Health Nurse; Dr Griffiths is a Senior Research and Evaluation Fellow; Ms Jugon is a EIP operations Manager; Ms Tidy is a CMHT Operations Manager; Ms Johnson is a Ward Matron; Dr Mann, Dr Tanner, Dr Millward, Dr
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15
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Caponnetto P, Maglia M, Mangione M, Vergopia C, Prezzavento GC, Polosa R, Quattropani MC, DiPiazza J, Signorelli MS. Smoking Addiction in Patients with Schizophrenia Spectrum Disorders and Its Perception and Intervention in Healthcare Personnel Assigned to Psycho-Rehabilitation Programs: A Qualitative Research. Healthcare (Basel) 2022; 10:2275. [PMID: 36421599 PMCID: PMC9690727 DOI: 10.3390/healthcare10112275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 11/05/2022] [Accepted: 11/07/2022] [Indexed: 08/30/2023] Open
Abstract
Patients with schizophrenia spectrum disorders have a higher prevalence and frequency of smoking rates when compared to the rest of the population; to this, it must be added that they develop a greater dependence and have some worse health consequences than the general population. This is qualitative research on the perception of smoking in healthcare professionals assigned to psycho-rehabilitation programs for patients with schizophrenia spectrum disorders. The point of view of health personnel (Psychologists, Psychiatrists, Pedagogists, and Nurses) about cigarette smoking in these patients was analyzed, focusing on their implications in disturbance and comparing them with e-cigarettes too. The methodology used to collect the data was a semi-structured interview with five questions. The research path was carried out in two assisted therapeutic communities that are clinics for the rehabilitation of serious mental illness in the period between November and July 2022. The results showed that the opinion of health professionals on smoking is very negative. Research has also shown that nearly all patients are smokers; however, their high grade of addiction is caused by periods of high stress due to various factors that lead patients to consume a greater number of cigarettes. Almost all respondents have a positive opinion of the e-cigarette, which was defined as an excellent substitute for traditional cigarettes.
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Affiliation(s)
- Pasquale Caponnetto
- Department of Educational Sciences, Section of Psychology, University of Catania, 95121 Catania, Italy
- Center of Excellence for the Acceleration of Harm Reduction (COEHAR), University of Catania, 95121 Catania, Italy
| | - Marilena Maglia
- Department of Educational Sciences, Section of Psychology, University of Catania, 95121 Catania, Italy
- CTA-Villa Chiara Psychiatric Rehabilitation Clinic and Research, 95030 Mascalucia, Italy
| | - Marta Mangione
- ECLAT Srl, Spin-Off of the University of Catania, 95121 Catania, Italy
| | - Chiara Vergopia
- Department of Educational Sciences, Section of Psychology, University of Catania, 95121 Catania, Italy
| | | | - Riccardo Polosa
- Center of Excellence for the Acceleration of Harm Reduction (COEHAR), University of Catania, 95121 Catania, Italy
- Department of Clinical and Experimental Medicine, University of Catania, 95121 Catania, Italy
| | - Maria Catena Quattropani
- Department of Educational Sciences, Section of Psychology, University of Catania, 95121 Catania, Italy
| | - Jennifer DiPiazza
- Hunter Bellevue School of Nursing, Hunter College, City University of New York, New York, NY 10065, USA
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16
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Simon N, Torrents R, Azorin JM. Comorbidities and the right dose: antipsychotics. Expert Opin Drug Metab Toxicol 2022; 18:507-518. [PMID: 35979611 DOI: 10.1080/17425255.2022.2113378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION The effects of antipsychotic drugs are dose-dependent, which is particularly true for their efficacy, each antipsychotic having a specific dose-response curve. This may justify individualizing doses for these agents. AREAS COVERED We review the pharmacokinetic profiles of seven oral antipsychotics: haloperidol, risperidone, olanzapine, clozapine, quetiapine, ziprasidone, and aripiprazole. Their main indications are psychotic and affective disorders. They are prescribed in a very large population which may have comorbidities. Hence, we analyze the impact of the latter on the pharmacokinetic profiles of these antipsychotics, focusing on renal and hepatic impairment. Reviews and clinical trials were discussed based on a systematic literature search (PubMed) ranging from 1995 to 2022. EXPERT OPINION Factors liable to impact antipsychotic dosage are numerous and their subsequent effects often hard to predict, due to multi-level interactions and compensatory phenomena. In clinical practice, physicians must be aware of these potential effects, but base their decisions on monitoring antipsychotic plasma levels.
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Affiliation(s)
- Nicolas Simon
- Aix Marseille Univ, INSERM, IRD, SESSTIM, Hôpital Sainte Marguerite, Service de Pharmacologie Clinique, CAP, Marseille, France
| | - Romain Torrents
- Aix Marseille Univ, INSERM, IRD, SESSTIM, Hôpital Sainte Marguerite, Service de Pharmacologie Clinique, CAP, Marseille, France
| | - Jean-Michel Azorin
- Department of Psychiatry, Sainte Marguerite Hospital. 13009 Marseille, France
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de Bartolomeis A, Vellucci L, Barone A, Manchia M, De Luca V, Iasevoli F, Correll CU. Clozapine's multiple cellular mechanisms: What do we know after more than fifty years? A systematic review and critical assessment of translational mechanisms relevant for innovative strategies in treatment-resistant schizophrenia. Pharmacol Ther 2022; 236:108236. [PMID: 35764175 DOI: 10.1016/j.pharmthera.2022.108236] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 06/21/2022] [Accepted: 06/21/2022] [Indexed: 12/21/2022]
Abstract
Almost fifty years after its first introduction into clinical care, clozapine remains the only evidence-based pharmacological option for treatment-resistant schizophrenia (TRS), which affects approximately 30% of patients with schizophrenia. Despite the long-time experience with clozapine, the specific mechanism of action (MOA) responsible for its superior efficacy among antipsychotics is still elusive, both at the receptor and intracellular signaling level. This systematic review is aimed at critically assessing the role and specific relevance of clozapine's multimodal actions, dissecting those mechanisms that under a translational perspective could shed light on molecular targets worth to be considered for further innovative antipsychotic development. In vivo and in vitro preclinical findings, supported by innovative techniques and methods, together with pharmacogenomic and in vivo functional studies, point to multiple and possibly overlapping MOAs. To better explore this crucial issue, the specific affinity for 5-HT2R, D1R, α2c, and muscarinic receptors, the relatively low occupancy at dopamine D2R, the interaction with receptor dimers, as well as the potential confounder effects resulting in biased ligand action, and lastly, the role of the moiety responsible for lipophilic and alkaline features of clozapine are highlighted. Finally, the role of transcription and protein changes at the synaptic level, and the possibility that clozapine can directly impact synaptic architecture are addressed. Although clozapine's exact MOAs that contribute to its unique efficacy and some of its severe adverse effects have not been fully understood, relevant information can be gleaned from recent mechanistic understandings that may help design much needed additional therapeutic strategies for TRS.
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Affiliation(s)
- Andrea de Bartolomeis
- Section of Psychiatry, Laboratory of Translational and Molecular Psychiatry and Unit of Treatment Resistant Psychosis, Department of Neuroscience, Reproductive Science and Dentistry, University Medical School of Naples "Federico II", Naples, Italy.
| | - Licia Vellucci
- Section of Psychiatry, Laboratory of Translational and Molecular Psychiatry and Unit of Treatment Resistant Psychosis, Department of Neuroscience, Reproductive Science and Dentistry, University Medical School of Naples "Federico II", Naples, Italy
| | - Annarita Barone
- Section of Psychiatry, Laboratory of Translational and Molecular Psychiatry and Unit of Treatment Resistant Psychosis, Department of Neuroscience, Reproductive Science and Dentistry, University Medical School of Naples "Federico II", Naples, Italy
| | - Mirko Manchia
- Section of Psychiatry, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy; Department of Pharmacology, Dalhousie University, Halifax, Nova Scotia, Canada
| | | | - Felice Iasevoli
- Section of Psychiatry, Laboratory of Translational and Molecular Psychiatry and Unit of Treatment Resistant Psychosis, Department of Neuroscience, Reproductive Science and Dentistry, University Medical School of Naples "Federico II", Naples, Italy
| | - Christoph U Correll
- The Zucker Hillside Hospital, Department of Psychiatry, Northwell Health, Glen Oaks, NY, USA; Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Department of Psychiatry and Molecular Medicine, Hempstead, NY, USA; Charité Universitätsmedizin Berlin, Department of Child and Adolescent Psychiatry, Berlin, Germany
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18
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Corrao MM, Nelson LA. Olanzapine/Samidorphan: A New Combination Treatment for Schizophrenia and Bipolar I Disorder Intended to Reduce Weight Gain. CNS Drugs 2022; 36:605-616. [PMID: 35644903 DOI: 10.1007/s40263-022-00923-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/13/2022] [Indexed: 11/03/2022]
Abstract
Olanzapine is a second-generation antipsychotic with established efficacy in several psychiatric disease states, but its use is limited because of weight gain and metabolic side effects. Samidorphan is a novel opioid antagonist that binds to mu-opioid, kappa-opioid, and delta-opioid receptors and is hypothesized to reduce cravings for high-calorie foods thus attenuating antipsychotic-induced weight gain. The combination product olanzapine/samidorphan was approved by the US Food and Drug Administration in June 2021 for the treatment of schizophrenia and bipolar I disorder; this article reviews the pharmacological properties of oral olanzapine/samidorphan and its clinical efficacy and tolerability with a focus on mitigation of olanzapine-induced weight gain in these patient populations. In clinical trials, the combination of olanzapine/samidorphan was associated with significantly less weight gain and smaller increases in waist circumference as compared with olanzapine monotherapy. Olanzapine/samidorphan demonstrated similar efficacy as olanzapine monotherapy and was well tolerated. Weight gain and metabolic side effects associated with olanzapine monotherapy can result in tolerability issues and potentially medication nonadherence. Olanzapine/samidorphan is an effective treatment for schizophrenia and bipolar I disorder with less weight gain than olanzapine monotherapy.
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Affiliation(s)
- Madeline M Corrao
- Division of Pharmacy Practice and Administration, School of Pharmacy, University of Missouri-Kansas City, 2464 Charlotte Street, Kansas City, MO, 64108, USA
| | - Leigh Anne Nelson
- Division of Pharmacy Practice and Administration, School of Pharmacy, University of Missouri-Kansas City, 2464 Charlotte Street, Kansas City, MO, 64108, USA.
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Abstract
OBJECTIVE Clozapine is generally recommended to be prescribed in a divided dosing regimen based on its relatively short plasma half-life. However, there has been little evidence to support the superiority of divided dosing of clozapine over once-daily dosing. To our knowledge, there have been no studies examining differences in actual plasma concentrations or adverse effects between the 2 dosing strategies of clozapine. We aimed to compare actual plasma concentrations of clozapine between once-daily and divided dosing regimens, and to examine the relationships of these regimens with psychiatric symptoms and adverse effects of clozapine. METHODS We analyzed data from 108 participants of a previous study conducted in 2 hospitals in Japan. A population pharmacokinetic model was used to estimate the peak and trough plasma concentrations of clozapine based on actual plasma concentrations. We evaluated psychiatric symptoms with the Brief Evaluation of Psychosis Symptom Domains and adverse effects of clozapine with the Glasgow Antipsychotic Side-effects Scale for Clozapine. RESULTS The estimated peak and trough plasma concentrations of clozapine did not differ significantly between once-daily and divided dosing regimens. There were no significant differences in psychiatric symptoms except for depression/anxiety or subjective adverse effects of clozapine between the 2 dosing strategies. CONCLUSIONS Our findings tentatively support the feasibility and clinical utility of once-daily dosing of clozapine in clinical practice. Further studies are needed to replicate these findings and determine causality between dosing strategies and clinical outcomes.
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Brasso C, Cisotto M, Ghirardini C, Pennazio F, Villari V, Rocca P. Accuracy of self-reported adherence and therapeutic drug monitoring in a psychiatric emergency ward. Psychiatry Res 2021; 305:114214. [PMID: 34587569 DOI: 10.1016/j.psychres.2021.114214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 09/14/2021] [Accepted: 09/17/2021] [Indexed: 11/28/2022]
Abstract
The aims of the study were: (1) the evaluation of the agreement between therapeutic drug monitoring (TDM) and a self-assessment of adherence to psychopharmacological treatments; (2) the identification of predictors of TDM results.Adherence in patients admitted into a psychiatric emergency service (PES) for a relapse of a schizophrenia spectrum disorder (SSD) or a bipolar disorder (BD; DSM-5) was assessed both directly with TDM and indirectly with a self-reported measure (Medication Adherence Report Scale -MARS- 10 items). The agreement between TDM and MARS was evaluated. Fifty-seven patients with SSD and 76 people with BD participated in the study. TDM was in range in about 50% of the global sample. No evidence of an association between MARS total scores and TDM results was found. Sensitivity, specificity, positive and negative predictive values of almost all MARS total scores were near to 50%. Smoking was strongly associated with a reduction of TDM results within the reference range. In the BD group, female sex was a predictor of TDM in range. In this clinical setting, self-assessment of adherence is neither reliable nor predictive. Furthermore, smoking is a strong predictor of poor adherence to psychopharmacological therapy.
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Affiliation(s)
- Claudio Brasso
- Department of Neuroscience "Rita Levi Montalcini", University of Turin, Via Cherasco 15, Turin 10126, Italy.
| | - Marta Cisotto
- Department of Neuroscience "Rita Levi Montalcini", University of Turin, Via Cherasco 15, Turin 10126, Italy; Psychiatric Emergency Service, Department of Neuroscience and Mental Health, A.O.U. "Città della Salute e della Scienza", Turin, Italy
| | - Camilla Ghirardini
- Psychiatric Emergency Service, Department of Neuroscience and Mental Health, A.O.U. "Città della Salute e della Scienza", Turin, Italy
| | - Filippo Pennazio
- Psychiatric Emergency Service, Department of Neuroscience and Mental Health, A.O.U. "Città della Salute e della Scienza", Turin, Italy
| | - Vincenzo Villari
- Psychiatric Emergency Service, Department of Neuroscience and Mental Health, A.O.U. "Città della Salute e della Scienza", Turin, Italy.
| | - Paola Rocca
- Department of Neuroscience "Rita Levi Montalcini", University of Turin, Via Cherasco 15, Turin 10126, Italy.
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Clinical and genetic influencing factors on clozapine pharmacokinetics in Tunisian schizophrenic patients. THE PHARMACOGENOMICS JOURNAL 2021; 21:551-558. [PMID: 33731885 DOI: 10.1038/s41397-021-00231-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 02/04/2021] [Accepted: 02/22/2021] [Indexed: 02/02/2023]
Abstract
Clozapine (Clz) is an atypical antipsychotic, which its pharmacokinetics can be influenced by several factors. The CYP1A2 and CYP2C19, major enzymes implicated in Clz metabolism, present an interethnic variation on their activity caused by single nucleotide polymorphisms (SNPs). The present study investigated the influence of genetic and nongenetic factors on Clz pharmacokinetics in a southern Mediterranean population. We included adult Tunisian schizophrenic patients having received Clz and undergone a therapeutic drug monitoring (TDM) of Clz by morning C0 monitoring. The genomic DNA was extracted using a salting-out procedure. CYP1A2*1F (rs762551;-163C>A), CYP1A2*1C (rs2069514;-3860 G>A) and CYP 2C19*2 (rs4244285; 681G>A) was analyzed using PCR-RFLP. Fifty-one patients were enrolled in the study. The mutant allele (CYP1A2*1F) was the most frequently detected (58.8%). For CYP1A2*1F, Clz dose-normalized (C0/D ratio) was as high as 1.28 ± 0.37 in CC versus 0.67 ± 0.32 ng mL-1 per mg day-1 in AA group (p < 0.001). The influence of genetic (CYP1A2*1F, CYP1A2*1C and CYP2C19*2) and nongenetic parameters (age, weight, gender, tobacco, coffee, and alcohol consumption) on the variation of the Clz C0/D ratio was investigated. Only the CYP1A2*1 F polymorphism correlates significantly with the Clz C0/D variation and could explain 24% of its variability. Our data support a critical role of the CYP1A2 -163C>A on the variation of Clz exposure in Tunisian schizophrenic patients. Considering its narrow therapeutic range, CYP1A2 genotyping combined with TDM of Clz may improve efficacy and safety of this drug. Further studies are needed to investigate this issue.
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22
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Head circumference in infants with nonopiate-induced neonatal abstinence syndrome. CNS Spectr 2021; 26:509-512. [PMID: 32605668 DOI: 10.1017/s1092852920001522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND No relationship has been reported between nonopiate neonatal abstinence syndrome (NAS) and anthropometric indices, including head circumference (HC). The purpose of this study was to determine the relationship between maternal nonopioid drug use and HC at birth in neonates with NAS. METHODS This retrospective observational study included neonates born between January 1, 2010 and March 31, 2019, whose mothers had been taking antipsychotic, antidepressant, sedative, or anticonvulsant medications. The outcome measures were HCs of NAS infants and controls. RESULTS Of 159 infants, 33 (21%) were diagnosed with NAS. There was no maternal opioid use among mothers during pregnancy. The HCs in the NAS group were significantly smaller than those in the control group. The median z-scores for HC at birth were -0.20 and 0.29 in the NAS group and the control group, respectively (P = .011). The median HCs at birth were 33.0 and 33.5 cm in the NAS group and the control group, respectively. Multivariate analysis revealed that maternal antipsychotic drug use and selective serotonin reuptake inhibitors were independently associated with NAS (P < .001 and P = .004, respectively). Notably, benzodiazepine use and smoking were not independent risk factors. CONCLUSIONS The results suggest an association between maternal antipsychotic drug use and NAS, which was further associated with decreased HC. Careful monitoring of maternal drug use should be considered to improve fetal outcomes.
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Sagahón‐Azúa J, Medellín‐Garibay SE, Chávez‐Castillo CE, González‐Salinas CG, Milán‐Segovia RDC, Romano‐Moreno S. Factors associated with fluoxetine and norfluoxetine plasma concentrations and clinical response in Mexican patients with mental disorders. Pharmacol Res Perspect 2021; 9:e00864. [PMID: 34523245 PMCID: PMC8441053 DOI: 10.1002/prp2.864] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 08/20/2021] [Indexed: 12/23/2022] Open
Abstract
Over the last few years, fluoxetine has been one of the most prescribed medications for the treatment of diverse psychiatric conditions in Mexico. Fluoxetine therapeutic effect is consequence of the joint action of the parent drug and its active metabolite, norfluoxetine. However, the clinical efficacy of fluoxetine, can be affected due to diverse factors, such as drug-drug interactions and the large interindividual variability in the pharmacokinetics of this drug. The aim of this study was to determine the factors associated with variability in plasma concentrations of fluoxetine and norfluoxetine and its association with the therapeutic response. Fluoxetine and norfluoxetine plasma concentrations were quantified by liquid chromatography in 81 Mexican patients with mental disorders; 25% of the patients had no medication adherence and 40% were below the reference range of fluoxetine plus norfluoxetine plasma concentrations. The results showed that concentrations can be affected by fluoxetine metabolism caused by CYP2D6 phenotype and the concomitant administration of olanzapine. Furthermore, CYP3A5 and CYP2C19 phenotype were associated with lower anxiety and depression control during treatment with fluoxetine. This study can be a starting point to elucidate the causes of fluoxetine variable response in Mexican patients with mental disorders, as well as to detect and support medication adherence.
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Affiliation(s)
- Julia Sagahón‐Azúa
- Department of PharmacyFaculty of Chemical SciencesAutonomous University of San Luis PotosíSan Luis PotosíMéxico
| | | | | | | | | | - Silvia Romano‐Moreno
- Department of PharmacyFaculty of Chemical SciencesAutonomous University of San Luis PotosíSan Luis PotosíMéxico
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Wagner E, Siafis S, Fernando P, Falkai P, Honer WG, Röh A, Siskind D, Leucht S, Hasan A. Efficacy and safety of clozapine in psychotic disorders-a systematic quantitative meta-review. Transl Psychiatry 2021; 11:487. [PMID: 34552059 PMCID: PMC8458455 DOI: 10.1038/s41398-021-01613-2] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 08/19/2021] [Accepted: 09/07/2021] [Indexed: 02/08/2023] Open
Abstract
A recent increase in the literature regarding the evidence base for clozapine has made it increasingly difficult for clinicians to judge "best evidence" for clozapine use. As such, we aimed at elucidating the state-of-the-art for clozapine with regard to efficacy, effectiveness, tolerability, and management of clozapine and clozapine-related adverse events in neuropsychiatric disorders. We conducted a systematic PRISMA-conforming quantitative meta-review of available meta-analytic evidence regarding clozapine use. Primary outcome effect sizes were extracted and transformed into relative risk ratios (RR) and standardized mean differences (SMD). The methodological quality of meta-analyses was assessed using the AMSTAR-2 checklist. Of the 112 meta-analyses included in our review, 61 (54.5%) had an overall high methodological quality according to AMSTAR-2. Clozapine appears to have superior effects on positive, negative, and overall symptoms and relapse rates in schizophrenia (treatment-resistant and non-treatment-resistant subpopulations) compared to first-generation antipsychotics (FGAs) and to pooled FGAs/second-generation antipsychotics (SGAs) in treatment-resistant schizophrenia (TRS). Despite an unfavorable metabolic and hematological adverse-event profile compared to other antipsychotics, hospitalization, mortality and all-cause discontinuation (ACD) rates of clozapine surprisingly show a pattern of superiority. Our meta-review outlines the superior overall efficacy of clozapine compared to FGAs and most other SGAs in schizophrenia and suggests beneficial efficacy outcomes in bipolar disorder and Parkinson's disease psychosis (PDP). More clinical studies and subsequent meta-analyses are needed beyond the application of clozapine in schizophrenia-spectrum disorders and future studies should be directed into multidimensional clozapine side-effect management to foster evidence and to inform future guidelines.
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Affiliation(s)
- Elias Wagner
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany.
| | - Spyridon Siafis
- grid.15474.330000 0004 0477 2438Department of Psychiatry and Psychotherapy, School of Medicine, Technische Universität München, Klinikum rechts der Isar, Munich, Germany
| | - Piyumi Fernando
- grid.7307.30000 0001 2108 9006Department of Psychiatry, Psychotherapy and Psychosomatics of the University Augsburg, Bezirkskrankenhaus Augsburg, Medical Faculty, University of Augsburg, Augsburg, Germany
| | - Peter Falkai
- grid.5252.00000 0004 1936 973XDepartment of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
| | - William G. Honer
- grid.17091.3e0000 0001 2288 9830Department of Psychiatry, The University of British Columbia, Vancouver, Canada
| | - Astrid Röh
- grid.7307.30000 0001 2108 9006Department of Psychiatry, Psychotherapy and Psychosomatics of the University Augsburg, Bezirkskrankenhaus Augsburg, Medical Faculty, University of Augsburg, Augsburg, Germany
| | - Dan Siskind
- grid.1003.20000 0000 9320 7537School of Medicine, University of Queensland, Brisbane, Australia ,Metro South Addiction and Mental Health Service, Brisbane, Australia
| | - Stefan Leucht
- grid.15474.330000 0004 0477 2438Department of Psychiatry and Psychotherapy, School of Medicine, Technische Universität München, Klinikum rechts der Isar, Munich, Germany
| | - Alkomiet Hasan
- grid.5252.00000 0004 1936 973XDepartment of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany ,grid.7307.30000 0001 2108 9006Department of Psychiatry, Psychotherapy and Psychosomatics of the University Augsburg, Bezirkskrankenhaus Augsburg, Medical Faculty, University of Augsburg, Augsburg, Germany
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Karacetin G, Ermis C, Bulanik Koc E, Saglam Y. Investigating Predictors of Clozapine Response in Adolescents with Schizophrenia and Schizoaffective Disorder. J Child Adolesc Psychopharmacol 2021; 31:504-510. [PMID: 34283936 DOI: 10.1089/cap.2021.0009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Objectives: We aimed to determine the clinical predictors of clozapine response in patients with early-onset schizophrenia (EOS)/schizoaffective disorder and the effect of substance use disorder (SUD) on treatment outcomes. Methods: Medical records of patients with treatment-resistant EOS receiving clozapine were identified for data analysis dated between January 2015 and April 2020. Patients on clozapine were followed in an inpatient unit of a tertiary care mental health hospital. Using the Positive and Negative Symptom Scale (PANSS), ≥30% reduction was defined as the response criteria after clozapine treatment. Results: Of 50 subjects (age: 16.3 ± 1.3 years, 36.0% female), 22 subjects (44.0%) met the defined response criteria. Clozapine responder (CLZ-R) and clozapine nonresponder (CLZ-NR) groups were similar regarding age at illness onset, sex, and duration of untreated psychosis. The CLZ-R group had higher baseline positive PANSS scores (24.8 ± 8.1 vs. 17.1 ± 6.6, p = 0.001, d = 1.0) and total PANSS scores (94.8 ± 17.2 vs. 80.1 ± 19.8, p = 0.008, d = 0.8) compared with the CLZ-NR counterparts. The duration of hospital stay was longer in the CLZ-NR group (122.3 ± 48.2 vs. 87.3 ± 36.2 days, p = 0.007). Among 32 male patients, the presence of SUD (n = 9, 28.1%) was associated with a less reduction in total PANSS scores (F = 7.5, p = 0.010) and higher levels of positive symptoms at the end of the treatment (12.8 ± 4.1 vs. 18.8 ± 7.4, p = 0.006, d = 1.0). Synthetic cannabinoids were the most common substance type used among males with treatment-refractory EOS (25.0%). Conclusions: Our results did not support the role of sociodemographic variables in clozapine response. Positive symptoms and SUD yielded a prognostic value in patients receiving clozapine.
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Affiliation(s)
- Gul Karacetin
- Clinic of Child and Adolescent Psychiatry, Bakirkoy Research and Training Hospital for Psychiatric and Neurological Diseases, University of Health Sciences, Istanbul, Turkey
| | - Cagatay Ermis
- Department of Child and Adolescent Psychiatry, Dokuz Eylül University, İzmir, Turkey
| | - Esra Bulanik Koc
- Clinic of Child and Adolescent Psychiatry, Bakirkoy Research and Training Hospital for Psychiatric and Neurological Diseases, University of Health Sciences, Istanbul, Turkey
| | - Yesim Saglam
- Clinic of Child and Adolescent Psychiatry, Bakirkoy Research and Training Hospital for Psychiatric and Neurological Diseases, University of Health Sciences, Istanbul, Turkey
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Molden E. Therapeutic drug monitoring of clozapine in adults with schizophrenia: a review of challenges and strategies. Expert Opin Drug Metab Toxicol 2021; 17:1211-1221. [PMID: 34461790 DOI: 10.1080/17425255.2021.1974400] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
INTRODUCTION Clozapine (CLZ) is the superior drug in treatment of schizophrenia. Serum concentration of CLZ is associated with clinical response and dose-dependents side effects, where generalized tonic-clonic seizures are most critical. Thus, therapeutic drug monitoring (TDM) of CLZ may guide individual dosing to reach target exposure and prevent dose-dependent side effects. However, current TDM methods are not capable of predicting the risk of agranulocytosis, which is a dose-independent side effect restricting use of CLZ to treatment-resistant schizophrenia (TRS). AREAS COVERED The article provides an overview of clinical, pharmacological, and toxicological aspects of CLZ, and the role of TDM as a tool for dose titration and follow-up in patients with TRS. Main focus is on current challenges and strategies in CLZ TDM, including future perspectives on potential identification/analysis of CLZ metabolite biomarkers reflecting the risk of granulocyte toxicity. EXPERT OPINION The association between CLZ serum concentration, clinical response and risk of seizures is indisputable. TDM should therefore always guide CLZ dose titration. Development of advanced TDM methods, including biomarkers predicting the risk of granulocyte toxicity might extend TDM to be a tool for deciding which patients that can be treated safely with CLZ, potentially increasing its utility beyond TRS.
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Affiliation(s)
- Espen Molden
- Center for Psychopharmacology, Diakonhjemmet Hospital, Oslo, Norway.,Department of Pharmacy, University of Oslo, Oslo, Norway
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Genetic Variations Associated with Long-Term Treatment Response in Bipolar Depression. Genes (Basel) 2021; 12:genes12081259. [PMID: 34440433 PMCID: PMC8391230 DOI: 10.3390/genes12081259] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/09/2021] [Accepted: 08/16/2021] [Indexed: 11/17/2022] Open
Abstract
Several pharmacogenetic-based decision support tools for psychoactive medication selection are available. However, the scientific evidence of the gene-drug pairs analyzed is mainly based on pharmacogenetic studies in patients with major depression or schizophrenia, and their clinical utility is mostly assessed in major depression. This study aimed at evaluating the impact of individual genes, with pharmacogenetic relevance in other psychiatric conditions, in the response to treatment in bipolar depression. Seventy-six patients diagnosed with bipolar disorder and an index major depressive episode were included in an observational retrospective study. Sociodemographic and clinical data were collected, and all patients were genotyped using a commercial multigene pharmacogenomic-based tool (Neuropharmagen®, AB-Biotics S.A., Barcelona, Spain). Multiple linear regression was used to identify pharmacogenetic and clinical predictors of efficacy and tolerability of medications. The pharmacogenetic variables response to serotonin-norepinephrine reuptake inhibitors (SNRIs) (ABCB1) and reduced metabolism of quetiapine (CYP3A4) predicted patient response to these medications, respectively. ABCB1 was also linked to the tolerability of SNRIs. An mTOR-related multigenic predictor was also associated with a lower number of adverse effects when including switch and autolytical ideation. Our results suggest that the predictors identified could be useful to guide the pharmacological treatment in bipolar disorder. Additional clinical studies are necessary to confirm these findings.
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Xiao T, Wang Z, Li G, Huang S, Zhu X, Liu S, Li X, Hu J, Shang D, Wen Y. What to Do About Missed Doses? A Retrospective Study of Olanzapine in the Elderly. DRUG DESIGN DEVELOPMENT AND THERAPY 2021; 15:3411-3423. [PMID: 34376974 PMCID: PMC8349538 DOI: 10.2147/dddt.s316110] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 07/02/2021] [Indexed: 12/13/2022]
Abstract
Background Schizophrenia is characterized by a high disease burden. Olanzapine is a common drug used in antipsychotic medication. Little is known about the population pharmacokinetics of olanzapine in elderly patients. Missed doses are a common and unavoidable issue during the treatment of psychiatric diseases, especially in elderly patients. This study aimed to identify what an elderly person should do if doses are inadvertently missed. Methods Data were collected from 140 elderly psychiatric patients (aged ≥65 years) who received olanzapine therapy. Olanzapine concentrations were determined by high pressure liquid chromatographic tandem mass spectrometry (HPLC-MS/MS) and a population-based approach was used to quantify the characteristics of elderly patients. A non-linear mixed-effects model was used for data analysis. Simulations based on the final model were applied to predict situations involving a single missed dose or three consecutive missed doses under several remedial regimens. Results A total of 474 samples from 140 elderly patients were included in the therapeutic drug monitoring (TDM) data analysis. A one-compartment model, with no significant covariates, was developed to describe the population pharmacokinetics of olanzapine in elderly patients. The population predicted systematic clearance (CL/F) and volumes of distribution (V/F) were 18 L/h and 785 L, respectively. The simulation demonstrated that in a missed dose situation, elderly patients should take the regular dose immediately; the refill dose used at the second remedial time point depends on the length of the time delay. Conclusion Here, we used a simulation to provide a remedial regimen for missed doses of olanzapine in the elderly population. Our simulation can provide valuable suggestions for individualized therapy in elderly patients.
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Affiliation(s)
- Tao Xiao
- Department of Pharmacy, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, 510370, People's Republic of China.,Guangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou, 510370, People's Republic of China
| | - Zhanzhang Wang
- Department of Pharmacy, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, 510370, People's Republic of China.,Guangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou, 510370, People's Republic of China
| | - Guanlie Li
- Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, 511436, People's Republic of China
| | - Shanqing Huang
- Department of Pharmacy, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, 510370, People's Republic of China.,Guangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou, 510370, People's Republic of China
| | - Xiuqing Zhu
- Department of Pharmacy, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, 510370, People's Republic of China.,Guangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou, 510370, People's Republic of China
| | - Shujing Liu
- Department of Pharmacy, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, 510370, People's Republic of China.,Guangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou, 510370, People's Republic of China
| | - Xiaolin Li
- Department of Pharmacy, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, 510370, People's Republic of China.,Guangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou, 510370, People's Republic of China
| | - Jinqing Hu
- Department of Pharmacy, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, 510370, People's Republic of China.,Guangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou, 510370, People's Republic of China
| | - Dewei Shang
- Department of Pharmacy, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, 510370, People's Republic of China.,Guangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou, 510370, People's Republic of China
| | - Yuguan Wen
- Department of Pharmacy, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, 510370, People's Republic of China.,Guangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou, 510370, People's Republic of China
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Soria-Chacartegui P, Villapalos-García G, Zubiaur P, Abad-Santos F, Koller D. Genetic Polymorphisms Associated With the Pharmacokinetics, Pharmacodynamics and Adverse Effects of Olanzapine, Aripiprazole and Risperidone. Front Pharmacol 2021; 12:711940. [PMID: 34335273 PMCID: PMC8316766 DOI: 10.3389/fphar.2021.711940] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 06/28/2021] [Indexed: 12/24/2022] Open
Abstract
Olanzapine, aripiprazole and risperidone are atypical antipsychotics or neuroleptics widely used for schizophrenia treatment. They induce various adverse drug reactions depending on their mechanisms of action: metabolic effects, such as weight gain and alterations of glucose and lipid metabolism; hyperprolactinemia and extrapyramidal effects, such as tremor, akathisia, dystonia, anxiety and distress. In this review, we listed polymorphisms associated with individual response variability to olanzapine, aripiprazole and risperidone. Olanzapine is mainly metabolized by cytochrome P450 enzymes, CYP1A2 and CYP2D6, whereas aripiprazole and risperidone metabolism is mainly mediated by CYP2D6 and CYP3A4. Polymorphisms in these genes and other enzymes and transporters, such as enzymes from the uridine 5'-diphospho-glucuronosyltransferase (UGT) family and ATP-binding cassette sub-family B member 1 (ABCB1), are associated to differences in pharmacokinetics. The three antipsychotics act on dopamine and serotonin receptors, among others, and several studies found associations between polymorphisms in these genes and variations in the incidence of adverse effects and in the response to the drug. Since olanzapine is metabolized by CYP1A2, a lower starting dose should be considered in patients treated with fluvoxamine or other CYP1A2 inhibitors. Regarding aripiprazole, a reduced dose should be administered in CYP2D6 poor metabolizers (PMs). Additionally, a reduction to a quarter of the normal dose is recommended if the patient is treated with concomitant CYP3A4 inhibitors. Risperidone dosage should be reduced for CYP2D6 PMs and titrated for CYPD6 ultrarapid metabolizers (UMs). Moreover, risperidone dose should be evaluated when a CYP2D6, CYP3A4 or ABCB1 inhibitor is administered concomitantly.
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Affiliation(s)
- Paula Soria-Chacartegui
- Clinical Pharmacology Department, School of Medicine, Hospital Universitario de La Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid, Instituto de Investigación Sanitaria La Princesa (IP), Madrid, Spain
| | - Gonzalo Villapalos-García
- Clinical Pharmacology Department, School of Medicine, Hospital Universitario de La Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid, Instituto de Investigación Sanitaria La Princesa (IP), Madrid, Spain
| | - Pablo Zubiaur
- Clinical Pharmacology Department, School of Medicine, Hospital Universitario de La Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid, Instituto de Investigación Sanitaria La Princesa (IP), Madrid, Spain.,UICEC Hospital Universitario de La Princesa, Platform SCReN (Spanish Clinical Research Network), Instituto de Investigación Sanitaria La Princesa (IP), Madrid, Spain
| | - Francisco Abad-Santos
- Clinical Pharmacology Department, School of Medicine, Hospital Universitario de La Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid, Instituto de Investigación Sanitaria La Princesa (IP), Madrid, Spain.,UICEC Hospital Universitario de La Princesa, Platform SCReN (Spanish Clinical Research Network), Instituto de Investigación Sanitaria La Princesa (IP), Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Dora Koller
- Department of Psychiatry, Yale School of Medicine and VA CT Healthcare Center, West Haven, CT, United States
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Nadalin S, Jakovac H, Peitl V, Karlović D, Buretić-Tomljanović A. Dysregulated inflammation may predispose patients with serious mental illnesses to severe COVID‑19 (Review). Mol Med Rep 2021; 24:611. [PMID: 34184073 PMCID: PMC8258463 DOI: 10.3892/mmr.2021.12250] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Accepted: 05/21/2021] [Indexed: 12/12/2022] Open
Abstract
Genetic and nongenetic factors associated with an increased inflammatory response may mediate a link between severe coronavirus disease 2019 (COVID‑19) and serious mental illness (SMI). However, systematic assessment of inflammatory response‑related factors associated with SMI that could influence COVID‑19 outcomes is lacking. In the present review, dietary patterns, smoking and the use of psychotropic medications are discussed as potential extrinsic risk factors and angiotensin‑converting enzyme (ACE) insertion/deletion (I/D) gene polymorphisms are considered as potential intrinsic risk factors. A genetics‑based prediction model for SMI using ACE‑I/D genotyping is also proposed for use in patients experiencing severe COVID‑19. Furthermore, the literature suggests that ACE inhibitors may have protective effects against SMI or severe COVID‑19, which is often linked to hypertension and other cardiovascular comorbidities. For this reason, we hypothesize that using these medications to treat patients with severe COVID‑19 might yield improved outcomes, including in the context of SMI associated with COVID‑19.
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Affiliation(s)
- Sergej Nadalin
- Department of Medical Biology and Genetics, Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia
| | - Hrvoje Jakovac
- Department of Physiology and Immunology, Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia
| | - Vjekoslav Peitl
- Department of Psychiatry, Sestre Milosrdnice University Hospital Center and Catholic University of Croatia, 10000 Zagreb, Croatia
| | - Dalibor Karlović
- Department of Psychiatry, Sestre Milosrdnice University Hospital Center and Catholic University of Croatia, 10000 Zagreb, Croatia
| | - Alena Buretić-Tomljanović
- Department of Medical Biology and Genetics, Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia
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Therapeutic Drug Monitoring of Second- and Third-Generation Antipsychotic Drugs-Influence of Smoking Behavior and Inflammation on Pharmacokinetics. Pharmaceuticals (Basel) 2021; 14:ph14060514. [PMID: 34071813 PMCID: PMC8230242 DOI: 10.3390/ph14060514] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 05/21/2021] [Accepted: 05/21/2021] [Indexed: 01/08/2023] Open
Abstract
Both inflammation and smoking can influence a drug’s pharmacokinetic properties, i.e., its liberation, absorption, distribution, metabolism, and elimination. Depending on, e.g., pharmacogenetics, these changes may alter treatment response or cause serious adverse drug reactions and are thus of clinical relevance. Antipsychotic drugs, used in the treatment of psychosis and schizophrenia, should be closely monitored due to multiple factors (e.g., the narrow therapeutic window of certain psychotropic drugs, the chronicity of most mental illnesses, and the common occurrence of polypharmacotherapy in psychiatry). Therapeutic drug monitoring (TDM) aids with drug titration by enabling the quantification of patients’ drug levels. Recommendations on the use of TDM during treatment with psychotropic drugs are presented in the Consensus Guidelines for Therapeutic Drug Monitoring in Neuropsychopharmacology; however, data on antipsychotic drug levels during inflammation or after changes in smoking behavior—both clinically relevant in psychiatry—that can aid clinical decision making are sparse. The following narrative review provides an overview of relevant literature regarding TDM in psychiatry, particularly in the context of second- and third-generation antipsychotic drugs, inflammation, and smoking behavior. It aims to spread awareness regarding TDM (most pronouncedly of clozapine and olanzapine) as a tool to optimize drug safety and provide patient-tailored treatment.
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32
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Therapeutic Drug Monitoring of Second- and Third-Generation Antipsychotic Drugs—Influence of Smoking Behavior and Inflammation on Pharmacokinetics. Pharmaceuticals (Basel) 2021. [DOI: 10.3390/ph14060514
expr 938544256 + 801362328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023] Open
Abstract
Both inflammation and smoking can influence a drug’s pharmacokinetic properties, i.e., its liberation, absorption, distribution, metabolism, and elimination. Depending on, e.g., pharmacogenetics, these changes may alter treatment response or cause serious adverse drug reactions and are thus of clinical relevance. Antipsychotic drugs, used in the treatment of psychosis and schizophrenia, should be closely monitored due to multiple factors (e.g., the narrow therapeutic window of certain psychotropic drugs, the chronicity of most mental illnesses, and the common occurrence of polypharmacotherapy in psychiatry). Therapeutic drug monitoring (TDM) aids with drug titration by enabling the quantification of patients’ drug levels. Recommendations on the use of TDM during treatment with psychotropic drugs are presented in the Consensus Guidelines for Therapeutic Drug Monitoring in Neuropsychopharmacology; however, data on antipsychotic drug levels during inflammation or after changes in smoking behavior—both clinically relevant in psychiatry—that can aid clinical decision making are sparse. The following narrative review provides an overview of relevant literature regarding TDM in psychiatry, particularly in the context of second- and third-generation antipsychotic drugs, inflammation, and smoking behavior. It aims to spread awareness regarding TDM (most pronouncedly of clozapine and olanzapine) as a tool to optimize drug safety and provide patient-tailored treatment.
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33
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Moschny N, Hefner G, Grohmann R, Eckermann G, Maier HB, Seifert J, Heck J, Francis F, Bleich S, Toto S, Meissner C. Therapeutic Drug Monitoring of Second- and Third-Generation Antipsychotic Drugs-Influence of Smoking Behavior and Inflammation on Pharmacokinetics. Pharmaceuticals (Basel) 2021; 14:514. [PMID: 34071813 PMCID: PMC8230242 DOI: 10.3390/ph14060514&set/a 947965394+957477086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023] Open
Abstract
Both inflammation and smoking can influence a drug's pharmacokinetic properties, i.e., its liberation, absorption, distribution, metabolism, and elimination. Depending on, e.g., pharmacogenetics, these changes may alter treatment response or cause serious adverse drug reactions and are thus of clinical relevance. Antipsychotic drugs, used in the treatment of psychosis and schizophrenia, should be closely monitored due to multiple factors (e.g., the narrow therapeutic window of certain psychotropic drugs, the chronicity of most mental illnesses, and the common occurrence of polypharmacotherapy in psychiatry). Therapeutic drug monitoring (TDM) aids with drug titration by enabling the quantification of patients' drug levels. Recommendations on the use of TDM during treatment with psychotropic drugs are presented in the Consensus Guidelines for Therapeutic Drug Monitoring in Neuropsychopharmacology; however, data on antipsychotic drug levels during inflammation or after changes in smoking behavior-both clinically relevant in psychiatry-that can aid clinical decision making are sparse. The following narrative review provides an overview of relevant literature regarding TDM in psychiatry, particularly in the context of second- and third-generation antipsychotic drugs, inflammation, and smoking behavior. It aims to spread awareness regarding TDM (most pronouncedly of clozapine and olanzapine) as a tool to optimize drug safety and provide patient-tailored treatment.
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Affiliation(s)
- Nicole Moschny
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; (H.B.M.); (J.S.); (F.F.); (S.B.); (S.T.); (C.M.)
- Correspondence: ; Tel.: +49-511-532-3656
| | - Gudrun Hefner
- Department of Psychiatry and Psychotherapy, Vitos Clinic for Forensic Psychiatry, Kloster-Eberbach-Str. 4, 65346 Eltville, Germany;
| | - Renate Grohmann
- Department of Psychiatry and Psychotherapy, Ludwig Maximilian University of Munich, Nussbaum-Str. 7, 80336 Munich, Germany;
| | - Gabriel Eckermann
- Department of Forensic Psychiatry and Psychotherapy, Hospital Kaufbeuren, Kemnater-Str. 16, 87600 Kaufbeuren, Germany;
| | - Hannah B Maier
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; (H.B.M.); (J.S.); (F.F.); (S.B.); (S.T.); (C.M.)
| | - Johanna Seifert
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; (H.B.M.); (J.S.); (F.F.); (S.B.); (S.T.); (C.M.)
| | - Johannes Heck
- Institute for Clinical Pharmacology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany;
| | - Flverly Francis
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; (H.B.M.); (J.S.); (F.F.); (S.B.); (S.T.); (C.M.)
| | - Stefan Bleich
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; (H.B.M.); (J.S.); (F.F.); (S.B.); (S.T.); (C.M.)
| | - Sermin Toto
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; (H.B.M.); (J.S.); (F.F.); (S.B.); (S.T.); (C.M.)
| | - Catharina Meissner
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; (H.B.M.); (J.S.); (F.F.); (S.B.); (S.T.); (C.M.)
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Rajalu BM, Jayarajan D, Muliyala KP, Sharma P, Gandhi S, Chand PK, Thirthalli J, Murthy P. Non-pharmacological interventions for smoking in persons with schizophrenia spectrum disorders - A systematic review. Asian J Psychiatr 2021; 56:102530. [PMID: 33465747 DOI: 10.1016/j.ajp.2020.102530] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 11/20/2020] [Accepted: 12/16/2020] [Indexed: 01/16/2023]
Abstract
INTRODUCTION The rates and intensity of tobacco use are higher in persons with schizophrenia spectrum disorders (PwS) compared to the general population, contributing to increased morbidity and mortality. We aimed to systematically review randomised control trials (RCTs) that used non-pharmacological interventions to reduce or cease tobacco use in PwS. METHODS We searched PubMed, EBSCO, ProQuest and PsycINFO for RCTs, published between January 2004 and December 2019, which included adult PwS. Studies providing self-reported or biochemically measured reduction of tobacco use and cessation after a minimum follow-up period of 6 months were included. We used the Cochrane Risk of Bias (ROB) tool for assessing the quality of selected studies. RESULTS Of the six included trials, two compared non-pharmacological interventions alone while four compared combinations with pharmacological interventions with routine care. The non-pharmacological interventions varied widely. Continuous abstinence and seven days point-prevalence abstinence (7 PPA) were reported in 2 and 4 studies respectively, with one study assessing both. All six trials measured reduction in the number of cigarettes smoked, but only two trials reported significant reductions in intervention groups. No worsening of psychiatric symptoms was reported. CONCLUSIONS Two trials were rated as "low risk", and 4 trials as "some concerns" on the ROB tool. Heterogeneity among trials precluded meta-analysis. Abstinence was significantly higher among groups who were given combination interventions, and intervention groups in studies showed significantly greater or a trend towards reduction in the number of cigarettes smoked than controls. No specific method of non-pharmacological management was conclusively favoured. IMPLICATIONS Reduction in cigarettes smoked seemed to significantly favour or show non-significant trends favouring intervention groups over controls, while abstinence was significantly higher among groups in studies that used specific combination interventions. Combinations of pharmacological and non-pharmacological treatment were better than non-pharmacological interventions used in isolation, for facilitating abstinence and reduction in cigarettes smoked. Specific interventions such as home visits and contingent reinforcement merit further study. Trials included in this study were conducted in high-income and upper-middle-income countries. Thus, the application of these interventions to low and middle-income countries (LAMICs) needs to be further studied.
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Affiliation(s)
- Banu Manickam Rajalu
- Psychiatric Rehabilitation Services, National Institute of Mental Health and Neurosciences, Bangalore, 560029, India.
| | - Deepak Jayarajan
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, 560029, India.
| | - Krishna Prasad Muliyala
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, 560029, India.
| | - Priyamvada Sharma
- Centre for Addiction Medicine, Department of Clinical Pharmacology and Neurotoxicology, National Institute of Mental Health and Neurosciences, Bangalore, 560029, India.
| | - Sailaxmi Gandhi
- Department of Nursing, National Institute of Mental Health and Neurosciences, Bangalore, 560029, India.
| | - Prabhat Kumar Chand
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, 560029, India.
| | - Jagadisha Thirthalli
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, 560029, India.
| | - Pratima Murthy
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, 560029, India.
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Komaryk A, Elbe D, Burgess L. Retrospective Review of Clozapine Use in Children and Adolescents. JOURNAL OF THE CANADIAN ACADEMY OF CHILD AND ADOLESCENT PSYCHIATRY = JOURNAL DE L'ACADEMIE CANADIENNE DE PSYCHIATRIE DE L'ENFANT ET DE L'ADOLESCENT 2021; 30:36-48. [PMID: 33552171 PMCID: PMC7837516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 11/30/2020] [Indexed: 06/12/2023]
Abstract
OBJECTIVE Literature describing use of clozapine by children and adolescents is limited. The primary study objective was to assess the patterns of clozapine use in an inpatient child and adolescent population. METHODS A retrospective review of child and adolescent inpatients receiving clozapine at a Canadian children's hospital from January 2000 through December 2014 was conducted. Interdisciplinary comprehensive data collection was conducted by experienced clinicians. Baseline population characteristics and psychiatric illness risk factors were captured. Illness symptoms and severity were assessed retrospectively using validated measures including the Brief Psychiatric Rating Scale (BPRS), Children's Global Assessment Scale (CGAS) and Clinical Global Impressions (CGI) scales. Estimated clozapine dosing requirements for each patient to achieve a serum level associated with response was calculated. Clozapine-related adverse events were captured. RESULTS Twenty-eight inpatients (64% female) receiving clozapine during the study period were identified. Mean age at clozapine initiation was 15.8 years. Twenty-three patients (82%) were taking clozapine at discharge, and of these, 22 patients (96%) experienced at least minimal improvement in BPRS and CGAS scores. Patients took a mean of 33.1 days from clozapine start to reach their maximum clozapine dosage, a mean maximum of 57% of their estimated clozapine dose requirement. Mean length of stay following clozapine initiation was 60.7 days. We observed a high rate of benign hematological adverse events, but no episodes of severe neutropenia. The majority of patients were of ethnicity associated with high risk for metabolic adverse events. CONCLUSION Most hospitalized, treatment-refractory children requiring clozapine clinically improve despite experiencing high, but largely manageable, adverse event rates.
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Affiliation(s)
- Ardelle Komaryk
- Family Nurse Practitioner; Healthy Minds Centre, BC Children's Hospital, Vancouver, British Columbia
| | - Dean Elbe
- Clinical Pharmacy Specialist, Child & Adolescent Mental Health; Healthy Minds Centre, BC Children's Hospital, Vancouver, British Columbia; Department of Pharmacy, Children's and Women's Health Centre of British Columbia, Vancouver, British Columbia; Associate Member, Department of Psychiatry, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia
| | - Leah Burgess
- Registered Psychologist; Healthy Minds Centre, BC Children's Hospital, Vancouver, British Columbia
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Sneller MH, de Boer N, Everaars S, Schuurmans M, Guloksuz S, Cahn W, Luykx JJ. Clinical, Biochemical and Genetic Variables Associated With Metabolic Syndrome in Patients With Schizophrenia Spectrum Disorders Using Second-Generation Antipsychotics: A Systematic Review. Front Psychiatry 2021; 12:625935. [PMID: 33868046 PMCID: PMC8044798 DOI: 10.3389/fpsyt.2021.625935] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 02/24/2021] [Indexed: 12/30/2022] Open
Abstract
Background: Individuals with severe mental illness experience increased morbidity and mortality compared to the general population. Adverse effects of antipsychotics, including weight gain, may contribute to the development of metabolic syndrome (MetS), which is associated with increased risks of all-cause and cardiovascular disease mortality. We aim to provide a comprehensive overview of clinical, biochemical and genetic factors associated with MetS among patients with schizophrenia spectrum disorders using second-generation antipsychotics (SGA). Methods: A literature search was performed in Pubmed and Embase to identify all cohort studies, cross-sectional studies and clinical trials investigating associations with MetS in patients with schizophrenia spectrum disorders using SGAs. We extracted and enumerated clinical, biochemical and genetic factors reported to be associated with MetS. We defined factors associated with MetS as factors being reported as associated with MetS in two or more studies. Results: 58 studies were included in this review (n = 12,123). In total, 62 factors were found to be associated with increased risk of MetS. Thirty one out of 58 studies investigated factors that were reported as associated with MetS in two or more studies. With regard to clinical factors, we found gender, higher age, concomitant use of mood stabilizers, higher baseline and current BMI, earlier SGA exposure, higher dose, longer duration of treatment, psychosis and tobacco smoking to be significantly associated with MetS. Furthermore, the biochemical factors hypo-adiponectinemia, elevated levels of C-reactive protein (CRP) and higher white blood cell (WBC) count were identified as factors associated with MetS. Among pharmacogenetic factors, the rs1414334 C-allele of the HTR2C-gene was associated with MetS in patients using SGA. Conclusion: In this systematic review investigating clinical, biochemical and genetic factors associated with MetS in patients using SGAs we found that higher age, higher baseline BMI, higher current BMI and male as well as female gender were positively associated with MetS across all antipsychotics. This study may set the stage for the application of clinical, biochemical and genetic factors to predict the risk of developing MetS in patients using SGAs. Future research is needed to determine which patients using SGAs are at risk to develop MetS in clinical practice.
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Affiliation(s)
- Marius H Sneller
- Faculty of Biomedical Sciences, Utrecht University, Utrecht, Netherlands
| | - Nini de Boer
- Department of Psychiatry, University Medical Center Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Sophie Everaars
- Faculty of Medicine, Utrecht University, Utrecht, Netherlands
| | - Max Schuurmans
- Faculty of Medicine, Utrecht University, Utrecht, Netherlands
| | - Sinan Guloksuz
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University Medical Centre, Maastricht, Netherlands.,Department of Psychiatry, Yale University School of Medicine, New Haven, CT, United States
| | - Wiepke Cahn
- Department of Psychiatry, University Medical Center Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands.,Altrecht Mental Health, Utrecht, Netherlands
| | - Jurjen J Luykx
- Department of Psychiatry, University Medical Center Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands.,Department of Translational Neuroscience, University Medical Center Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands.,GGNet Mental Health, Apeldoorn, Netherlands
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Cigarette Smoking and Schizophrenia: Etiology, Clinical, Pharmacological, and Treatment Implications. SCHIZOPHRENIA RESEARCH AND TREATMENT 2021; 2021:7698030. [PMID: 34938579 PMCID: PMC8687814 DOI: 10.1155/2021/7698030] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Accepted: 11/25/2021] [Indexed: 11/18/2022]
Abstract
Recent data suggests that the prevalence of smoking in schizophrenia remains high. While reports suggest that smoking increases the risk of developing schizophrenia, the potential causative role of smoking in this relationship needs further investigation. Smokers with schizophrenia are more likely to have more intense positive symptoms and lower cognitive function, but diminished intensity of extrapyramidal side effects than nonsmoking patients with schizophrenia. They were also more likely to exhibit aggressive behaviour compared to nonsmokers, which could suggest higher levels of baseline aggression. The significant cost associated with regular tobacco expenditure can detract from investment in key domains. Large-scale trials have shown that pharmacotherapy for smoking cessation is effective and does not worsen the risk of developing neuropsychiatric symptoms compared to placebo. Electronic cigarette use among schizophrenia patients is high, and there is emerging evidence supportive of its efficacy. Future improvements include large-scale trials assessing the utility, efficacy, and safety of electronic cigarettes in schizophrenia patients.
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Absolute and Dose-Adjusted Serum Concentrations of Clozapine in Patients Switching vs. Maintaining Treatment: An Observational Study of 1979 Patients. CNS Drugs 2021; 35:999-1008. [PMID: 34417726 PMCID: PMC8408068 DOI: 10.1007/s40263-021-00847-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/15/2021] [Indexed: 11/05/2022]
Abstract
BACKGROUND Clozapine is an effective drug for the management of schizophrenia that has not responded to other agents, but some patients experience insufficient or adverse effects and discontinue treatment. OBJECTIVE We investigated a potential association between clozapine serum concentrations and switching to other antipsychotics in a large real-world patient population from a therapeutic drug monitoring service. METHODS Absolute and dose-adjusted serum concentrations (concentration-to-dose ratios [C/D ratios]) of clozapine during dosing between 100 and 1000 mg/day were measured in 1979 Norwegian patients during the period 2005-2019. These variables were compared in patients switching to other antipsychotic drugs versus maintaining clozapine treatment using linear mixed models. Smoking habits were known for 49% of the patients. To prevent potential nonadherence affecting clozapine switching, only patients with serum concentrations above 50% of the lower reference range were included. RESULTS In total, 190 patients (9.6%) switched from clozapine to another antipsychotic drug during the study period, whereas the remaining patients were not detected as switchers and were interpreted as maintaining treatment. Patients switching treatment had 23.5% lower absolute concentrations (954 vs. 1245 nmol/L; p < 0.001) and 15.7% lower daily doses (305 vs. 362 mg/day; p < 0.001) of clozapine than did nonswitchers, making the clozapine C/D ratio 9.7% lower in switchers than in nonswitchers after correcting for smoking habits (2.80 vs. 3.10 nmol/L/mg/day; p = 0.032). CONCLUSIONS The present study suggests that decreased absolute and dose-adjusted serum concentrations of clozapine were associated with clozapine discontinuation. The significantly reduced clozapine concentrations regardless of prescribed dose in switchers versus nonswitchers may indicate a pharmacokinetic mechanism underlying the risk of clozapine discontinuation.
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Carvalho Henriques B, Yang EH, Lapetina D, Carr MS, Yavorskyy V, Hague J, Aitchison KJ. How Can Drug Metabolism and Transporter Genetics Inform Psychotropic Prescribing? Front Genet 2020; 11:491895. [PMID: 33363564 PMCID: PMC7753050 DOI: 10.3389/fgene.2020.491895] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 09/25/2020] [Indexed: 12/11/2022] Open
Abstract
Many genetic variants in drug metabolizing enzymes and transporters have been shown to be relevant for treating psychiatric disorders. Associations are strong enough to feature on drug labels and for prescribing guidelines based on such data. A range of commercial tests are available; however, there is variability in included genetic variants, methodology, and interpretation. We herein provide relevant background for understanding clinical associations with specific variants, other factors that are relevant to consider when interpreting such data (such as age, gender, drug-drug interactions), and summarize the data relevant to clinical utility of pharmacogenetic testing in psychiatry and the available prescribing guidelines. We also highlight areas for future research focus in this field.
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Affiliation(s)
| | - Esther H. Yang
- Department of Psychiatry, University of Alberta, Edmonton, AB, Canada
- Department of Medical Genetics, University of Alberta, Edmonton, AB, Canada
| | - Diego Lapetina
- Department of Psychiatry, University of Alberta, Edmonton, AB, Canada
- Department of Medical Genetics, University of Alberta, Edmonton, AB, Canada
| | - Michael S. Carr
- Department of Psychiatry, University of Alberta, Edmonton, AB, Canada
| | - Vasyl Yavorskyy
- Department of Psychiatry, University of Alberta, Edmonton, AB, Canada
| | - Joshua Hague
- Department of Psychiatry, University of Alberta, Edmonton, AB, Canada
- Department of Medical Genetics, University of Alberta, Edmonton, AB, Canada
| | - Katherine J. Aitchison
- Department of Psychiatry, University of Alberta, Edmonton, AB, Canada
- Department of Medical Genetics, University of Alberta, Edmonton, AB, Canada
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada
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Wagner E, McMahon L, Falkai P, Hasan A, Siskind D. Impact of smoking behavior on clozapine blood levels - a systematic review and meta-analysis. Acta Psychiatr Scand 2020; 142:456-466. [PMID: 32869278 DOI: 10.1111/acps.13228] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/14/2020] [Accepted: 08/19/2020] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Tobacco smoking significantly impacts clozapine blood levels and has substantial implications on individual efficacy and safety outcomes. By investigating differences in clozapine blood levels in smoking and non-smoking patients on clozapine, we aim to provide guidance for clinicians how to adjust clozapine levels for patients on clozapine who change their smoking habits. METHODS We conducted a meta-analysis on clozapine blood levels, norclozapine levels, norclozapine/clozapine ratios, and concentration to dose (C/D) ratios in smokers and non-smokers on clozapine. Data were meta-analyzed using a random-effects model with sensitivity analyses on dose, ethnic origin, and study quality. RESULTS Data from 23 studies were included in this meta-analysis with 21 investigating differences between clozapine blood levels of smokers and non-smokers. In total, data from 7125 samples were included for the primary outcome (clozapine blood levels in ng/ml) in this meta-analysis. A meta-analysis of all between-subject studies (N = 16) found that clozapine blood levels were significantly lower in smokers compared with non-smokers (Standard Mean Difference (SMD) -0.39, 95% confidence interval (CI) -0.55 to -0.22, P < 0.001, I2 = 80%). With regard to the secondary outcome, C/D ratios (N = 16 studies) were significantly lower in the smoker group (n = 645) compared with the non-smoker group (n = 813; SMD -0.70, 95%CI -0.84 to -0.56, P < 0.00001, I2 = 17%). CONCLUSION Smoking behavior and any change in smoking behavior is associated with a substantial effect on clozapine blood levels. Reductions of clozapine dose of 30% are recommended when a patient on clozapine stops smoking. Reductions should be informed by clozapine steady-state trough levels and a close clinical risk-benefit evaluation.
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Affiliation(s)
- E Wagner
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
| | - L McMahon
- School of Medicine, University of Queensland, Brisbane, Australia
| | - P Falkai
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
| | - A Hasan
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany.,Department of Psychiatry, Psychotherapy and Psychosomatics of the University Augsburg, Bezirkskrankenhaus Augsburg, Medical Faculty, University of Augsburg, Augsburg, Germany
| | - D Siskind
- School of Medicine, University of Queensland, Brisbane, Australia.,Metro South Addiction and Mental Health Service, Brisbane, Australia
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Wagner E, Oviedo-Salcedo T, Pelzer N, Strube W, Maurus I, Gutwinski S, Schreiter S, Kleymann P, Morgenroth CL, Okhuijsen-Pfeifer C, Luykx JJ, Falkai P, Schneider-Axmann T, Hasan A. Effects of Smoking Status on Remission and Metabolic and Cognitive Outcomes in Schizophrenia Patients Treated with Clozapine. PHARMACOPSYCHIATRY 2020; 53:273-283. [PMID: 32757178 DOI: 10.1055/a-1208-0045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Even though clozapine is the recommended last-resort antipsychotic, many patients fail to respond and show treatment-refractory psychotic symptoms. Smoking has been suggested as a possible risk factor for poor clozapine response, hampering remission and negatively impacting somatic outcomes. METHODS Our aim was to test whether smoking status is associated with remission rates and other symptomatic and somatic outcomes. We therefore assessed remission rates according to The Remission in Schizophrenia Working Group (RSWG) criteria, and metabolic and cognitive outcomes among patients with schizophrenia-spectrum disorders treated with clozapine for at least 6 months. For analyses, we grouped our cohort into 3 groups according to clozapine treatment duration (6 months, 2 years, 5 years). RESULTS One hundred five patients were included in our analyses and grouped according to their clozapine treatment duration. In the 6-months analyses, patients who smoked were significantly more likely to be younger of age (p=0.002) despite on average shorter duration of clozapine treatment (p=0.041) and significantly more likely to be treated with mood-stabilizing co-medication (p=0.030) compared to nonsmokers. Remission rates (p=0.490), as well as a set of metabolic and cognitive variables did not differ between the 2 groups. A related pattern could be observed for the 2- and 5-years analyses. CONCLUSIONS Smoking behavior among clozapine-treated schizophrenia patients might delineate a cohort with an earlier onset of the disease. Nevertheless, most findings comparing disease-specific and clinical outcomes among smokers and nonsmokers were negative. Further research is needed to identify strategies to overcome insufficient remission rates in this patient group.
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Affiliation(s)
- Elias Wagner
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
| | - Tatiana Oviedo-Salcedo
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
| | - Nicola Pelzer
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
| | - Wolfgang Strube
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
| | - Isabel Maurus
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
| | - Stefan Gutwinski
- Department of Psychiatry and Psychotherapy, Charité Berlin, Berlin, Germany
| | - Stefanie Schreiter
- Department of Psychiatry and Psychotherapy, Charité Berlin, Berlin, Germany
| | - Phillip Kleymann
- Department of Psychiatry and Psychotherapy, Charité Berlin, Berlin, Germany
| | | | - Cynthia Okhuijsen-Pfeifer
- Department of Psychiatry, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Jurjen J Luykx
- Department of Psychiatry, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.,Department of Translational Neuroscience, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.,GGNet Mental Health, second opinion outpatient clinic
| | - Peter Falkai
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
| | - Thomas Schneider-Axmann
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
| | - Alkomiet Hasan
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany.,Department of Psychiatry, Psychotherapy and Psychosomatics of the University Augsburg, Bezirkskrankenhaus Augsburg, University of Augsburg, Augsburg, Germany
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Verdoux H, Quiles C. Educational needs and psychoeducation interventions in clozapine users: a narrative review. Acta Psychiatr Scand 2020; 142:96-108. [PMID: 32266962 DOI: 10.1111/acps.13172] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/29/2020] [Indexed: 12/28/2022]
Abstract
OBJECTIVE Increasing users' knowledge about the expected benefits and risks of clozapine may contribute to the initiation and maintenance of clozapine in persons with treatment-resistant schizophrenia (TRS). The objective was to identify the educational needs of clozapine users and the interventions aimed at addressing these needs. METHOD We systematically searched multiple electronic databases for articles: (i) exploring educational needs of clozapine users and of their relatives; and (ii) reporting educational interventions aimed at addressing these needs. Data were synthesized narratively. RESULTS A total of 30 articles published from 1990 to 2019 in 8 countries fulfilled our inclusion criteria. As most studies on educational needs (n = 18) were carried out in persons already taking clozapine, educational needs of TRS patients who were candidates for clozapine treatment are not well documented. Users' level of knowledge about clozapine was often poor, especially about adverse effects or interactions with other substances, with a poor retention of information delivered at treatment initiation. Among 12 studies reporting educational interventions in clozapine users, five provided quantitative outcomes. Their findings suggest that structured educational programmes may contribute to promote clozapine initiation and to improve users' knowledge about this drug. CONCLUSION The literature is sparse on structured educational interventions about clozapine, and only one randomized controlled trial was identified. A promising strategy emerging from this review may be staging educational interventions according to the evolving needs of persons with TRS before clozapine use, at initiation and during maintenance treatment.
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Affiliation(s)
- H Verdoux
- Bordeaux Population Health Research Center, Team Pharmacoepidemiology, UMR 1219, Inserm, University of Bordeaux, Bordeaux, France.,Centre Hospitalier Charles Perrens, Bordeaux, France
| | - C Quiles
- Centre Hospitalier Charles Perrens, Bordeaux, France
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Mitchell A, Hill B. Physical health assessment for people with a severe mental illness. ACTA ACUST UNITED AC 2020; 29:553-556. [PMID: 32463746 DOI: 10.12968/bjon.2020.29.10.553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Aby Mitchell
- Senior Lecturer, Adult Nursing, University of West London
| | - Barry Hill
- Director of Employability (Nursing, Midwifery and Health), and Programme Leader, BSc (Hons) Nursing Science (Adult), Northumbria University, Newcastle
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Caponnetto P, Polosa R, Robson D, Bauld L. Tobacco smoking, related harm and motivation to quit smoking in people with schizophrenia spectrum disorders. Health Psychol Res 2020; 8:9042. [PMID: 32510003 PMCID: PMC7267811 DOI: 10.4081/hpr.2020.9042] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 05/20/2020] [Indexed: 02/06/2023] Open
Abstract
This narrative review focuses on the topic of tobacco smoking amongst people with schizophrenia spectrum disorders. We searched PubMed, PsycInfo and Scopus databases for schizophrenia spectrum disorders and smoking and included articles about the epidemiology of tobacco smoking in people with schizophrenia spectrum disorders, examining the relationship between smoking and mental health. This narrative review describes that a higher prevalence, frequency and impact of both high nicotine dependence and its harmful effects in patients with schizophrenia spectrum disorders compared with those in the general population. Despite several existent theories, the reasons for high smoking rates, the high dependence on nicotine and severity of nicotine withdrawal symptoms are not fully understood. The main aim of this paper is to inform mental health personnel and particularly clinical and health psychologists about the impact and role of tobacco smoking for smokers with schizophrenia spectrum disorders.
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Affiliation(s)
| | | | | | - Linda Bauld
- Usher Institute, College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, UK
- UK Centre for Tobacco & Alcohol Studies, Nottingham, UK
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Javelot H, Llorca PM, Drapier D, Fakra E, Hingray C, Meyer G, Dizet S, Egron A, Straczek C, Roser M, Masson M, Gaillard R, Fossati P, Haffen E. [Informations on psychotropics and their adaptations for patients suffering from mental disorders in France during the SARS-CoV-2 epidemic]. Encephale 2020; 46:S14-S34. [PMID: 32376004 PMCID: PMC7196532 DOI: 10.1016/j.encep.2020.04.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 04/17/2020] [Indexed: 12/11/2022]
Abstract
The 2019-20 coronavirus pandemic (SARS-CoV-2; severe acute respiratory syndrome coronavirus 2) has dramatic consequences on populations in terms of morbidity and mortality and in social terms, the general confinement of almost half of the world's population being a situation unprecedented in history, which is difficult today to measure the impact at the individual and collective levels. More specifically, it affects people with various risk factors, which are more frequent in patients suffering from psychiatric disorders. Psychiatrists need to know: (i) how to identify, the risks associated with the prescription of psychotropic drugs and which can prove to be counterproductive in their association with COVID-19 (coronavirus disease 2019), (ii) how to assess in terms of benefit/risk ratio, the implication of any hasty and brutal modification on psychotropic drugs that can induce confusion for a differential diagnosis with the evolution of COVID-19. We carried out a review of the literature aimed at assessing the specific benefit/risk ratio of psychotropic treatments in patients suffering from COVID-19. Clinically, symptoms suggestive of COVID-19 (fever, cough, dyspnea, digestive signs) can be caused by various psychotropic drugs and require vigilance to avoid false negatives and false positives. In infected patients, psychotropic drugs should be used with caution, especially in the elderly, considering the pulmonary risk. Lithium and Clozapine, which are the reference drugs in bipolar disorder and resistant schizophrenia, warrant specific attention. For these two treatments the possibility of a reduction in the dosage - in case of minimal infectious signs and in a situation, which does not allow rapid control - should ideally be considered taking into account the clinical response (even biological; plasma concentrations) observed in the face of previous dose reductions. Tobacco is well identified for its effects as an inducer of CYP1A2 enzyme. In a COVID+ patient, the consequences of an abrupt cessation of smoking, particularly related with the appearance of respiratory symptoms (cough, dyspnea), must therefore be anticipated for patients receiving psychotropics metabolized by CYP1A2. Plasma concentrations of these drugs are expected to decrease and can be related to an increase risk of relapse. The symptomatic treatments used in COVID-19 have frequent interactions with the most used psychotropics. If there is no curative treatment for infection to SARS-CoV-2, the interactions of the various molecules currently tested with several classes of psychotropic drugs (antidepressants, antipsychotics) are important to consider because of the risk of changes in cardiac conduction. Specific knowledge on COVID-19 remains poor today, but we must recommend rigor in this context in the use of psychotropic drugs, to avoid adding, in patients suffering from psychiatric disorders, potentially vulnerable in the epidemic context, an iatrogenic risk or loss of efficiency.
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Affiliation(s)
- H Javelot
- Établissement Public de Santé Alsace Nord, Brumath, France; Laboratoire de toxicologie et pharmacologie neuro-cardiovasculaire, université de Strasbourg, Strasbourg, France.
| | - P-M Llorca
- CHU de Clermont-Ferrand, Clermont-Ferrand, France; Université Clermont Auvergne, Clermont-Ferrand, France
| | - D Drapier
- Pôle hospitalo-universitaire de psychiatrie adulte, centre hospitalier Guillaume-Régnier, Rennes, France; EA 4712, comportements et noyaux gris centraux, université de Rennes 1, Rennes, France
| | - E Fakra
- Pôle universitaire de psychiatrie, CHU de Saint-Étienne, Saint-Étienne, France
| | - C Hingray
- Pôle hospitalo-universitaire de psychiatrie d'adultes du Grand Nancy, centre psychothérapique de Nancy, Laxou, France; Département de neurologie, CHU de Nancy, Nancy, France
| | - G Meyer
- Service de pharmacie, Établissement Public de Santé Alsace Nord, Brumath, France; Service de pharmacie, CHU de Strasbourg, Strasbourg, France
| | - S Dizet
- Service de pharmacie, CHS de Sevrey, Chalon-sur-Saône, France
| | - A Egron
- Service de pharmacie, centre hospitalier de Cadillac, Cadillac, France
| | - C Straczek
- Département de pharmacie, CHU Henri-Mondor, Créteil, France; Institut Mondor de recherche biomédical, Inserm U955, équipe 15 neuropsychiatrie translationnelle, Créteil, France
| | - M Roser
- Institut Mondor de recherche biomédical, Inserm U955, équipe 15 neuropsychiatrie translationnelle, Créteil, France; Service de psychiatrie sectorisée, hôpital Albert-Chenevier, Créteil, France
| | - M Masson
- Nightingale Hospitals-Paris, clinique du Château de Garches, Garches, France; SHU, GHU psychiatrie et neurosciences, Paris, France
| | - R Gaillard
- GHU psychiatrie et neurosciences, université de Paris, Paris, France; Sous-section 49-03, Conseil national des universités (CNU), Paris, France
| | - P Fossati
- Inserm U1127, service de psychiatrie adultes, ICM, groupe hospitalier Pitié-Salpêtrière, Sorbonne université, AP-HP, Paris, France
| | - E Haffen
- CIC-1431 Inserm, service de psychiatrie, CHU de Besançon, Besançon, France; Laboratoire de neurosciences, université de Franche-Comté, Besançon, France
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Jovanović M, Vučićević K, Miljković B. Understanding variability in the pharmacokinetics of atypical antipsychotics - focus on clozapine, olanzapine and aripiprazole population models. Drug Metab Rev 2020; 52:1-18. [PMID: 32008418 DOI: 10.1080/03602532.2020.1717517] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Antipsychotic medicines are widely used for the management of psychotic symptoms regardless of the underlying diagnosis. Most atypical antipsychotics undergo extensive metabolism prior to excretion. Various factors may influence their pharmacokinetics, particularly elimination, leading to highly variable drug concentrations between individual patients following the same dosing regimen. Population pharmacokinetic approach, based on nonlinear mixed effects modeling, is a useful tool to identify covariates explaining pharmacokinetic variability, as well as to characterize and distinguish unexplained residual and between-subject (interindividual) variability. In addition, this approach allows the use of both sparsely and intensively sampled data. In this paper, we reviewed the pharmacokinetic characteristics of clozapine, olanzapine and aripiprazole, focusing on a population modeling approach. In particular, models based on a nonlinear mixed effects approach performed by NONMEM® software in order to identify and quantify sources of pharmacokinetic variability are presented. Population models were identified through systematic searches of PubMed and sixteen studies were selected. Some of the factors identified that significantly contribute to variability in elimination among clozapine, olanzapine, and aripiprazole are demographic characteristics, body weight, genetic polymorphism, smoking and in some cases drug interactions. Scientific research based on pharmacometric modeling is useful to further characterize sources of variability and their combined effect.
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Affiliation(s)
- Marija Jovanović
- Department of Pharmacokinetics and Clinical Pharmacy, University of Belgrade - Faculty of Pharmacy, Belgrade, Republic of Serbia
| | - Katarina Vučićević
- Department of Pharmacokinetics and Clinical Pharmacy, University of Belgrade - Faculty of Pharmacy, Belgrade, Republic of Serbia
| | - Branislava Miljković
- Department of Pharmacokinetics and Clinical Pharmacy, University of Belgrade - Faculty of Pharmacy, Belgrade, Republic of Serbia
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Djordjevic N, Radmanovic B, Cukic J, Baskic D, Djukic-Dejanovic S, Milovanovic D, Aklillu E. Cigarette smoking and heavy coffee consumption affecting response to olanzapine: The role of genetic polymorphism. World J Biol Psychiatry 2020; 21:29-52. [PMID: 30513034 DOI: 10.1080/15622975.2018.1548779] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Objectives: To evaluate the effect of cigarette smoking and heavy coffee consumption on efficacy and safety of olanzapine treatment in schizophrenia patients, in relation to genetic polymorphism.Methods: The study involved 120 patients with schizophrenia, treated with olanzapine for 30 days. Therapy efficacy was determined using three different psychiatric scales, and safety by assessing metabolic adverse effects and extrapyramidal symptoms. Genotyping included CYP1A2*1C, CYP1A2*1F and CYP1A1/1A2 intergenic polymorphism, as well as CYP2D6*3, CYP2D6*4 and CYP2D6*6.Results: Cigarette smoking and heavy coffee consumption decreased the efficacy and increased the safety of olanzapine treatment (P < 0.001). Although the effect was detected only in carriers of CYP1A2*1F allele, covariate analysis revealed that it is independent of CYP1A2 genotype. Olanzapine dose was inversely correlated with the drug efficacy (P ≤ 0.002) and LDL level (P = 0.004). Women and older subjects responded better to therapy (P < 0.026), but had more certain adverse effects (P ≤ 0.049). When controlling for other relevant factors, CYP2D6 metabolizer status affects olanzapine efficacy (P = 0.032).Conclusions: We confirm the effect of cigarette smoking and heavy coffee consumption on olanzapine efficacy and safety. The relevance of CYP1A2 genotype for the described effect needs further investigation. Olanzapine treatment outcome is also affected by dose, sex, age and CYP2D6 metabolizer status.
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Affiliation(s)
- Natasa Djordjevic
- Department of Pharmacology and toxicology, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Branimir Radmanovic
- Department of Psychiatry, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia.,Psychiatry Clinic, Clinical Centre "Kragujevac", Kragujevac, Serbia
| | | | - Dejan Baskic
- Department of Microbiology and immunology, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | | | - Dragan Milovanovic
- Department of Pharmacology and toxicology, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Eleni Aklillu
- Division of Clinical Pharmacology, Department of Laboratory Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
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de Caluwé L, van Buitenen N, Gelan PJ, Crunelle CL, Thomas R, Casseres S, Matthys F, van Harten P, Cahn W. Prevalence of metabolic syndrome and its associated risk factors in an African-Caribbean population with severe mental illness. Psychiatry Res 2019; 281:112558. [PMID: 31546147 DOI: 10.1016/j.psychres.2019.112558] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 09/05/2019] [Accepted: 09/06/2019] [Indexed: 12/31/2022]
Abstract
This cross-sectional study aims to determine the prevalence of metabolic syndrome (MetS) in patients with severe mental illness (SMI) on a Caribbean island, Curaçao, using the modified National Cholesterol Education Program Adult Treatment Panel III criteria. Among 350 patients (240 men and 110 women) with a mean age of 51.9 years (S.D.=13.5) MetS prevalence was 37.4%, significantly higher in female patients (63.6%) compared to male patients (25.4%). Increased waist circumference was present in 51.1%, low HDL in 50.6%, hypertension in 49.4%, hyperglycemia in 28.6% and 25.7% had hypertriglyceridemia. Except for hypertriglyceridemia, all criteria were more prevalent in female patients. Binary logistic regression analysis indicated that female gender, outpatient treatment setting and the absence of substance use disorder were all significant predictors for MetS. Compared to data from the general population obtained by the 2013 National Health Survey Curaçao, this study showed significantly higher prevalence of diabetes and hypertension in patients with SMI. Moreover, female patients had the highest prevalence of diabetes (28.2%), obesity (50.0%) and increased waist circumference (88.2%). This study demonstrates that African-Caribbean patients with SMI are at high-risk for MetS, especially female patients. Our data suggest to focus on modifiable lifestyle risk factors, as promoting physical activity and healthy dietary habits.
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Affiliation(s)
- Laura de Caluwé
- Department of Psychiatry, University Hospital Brussels, Laarbeeklaan 101, B-1090 Brussels, Belgium; Psychiatric Center, Dr. D.R. Capriles Hospital, GGz Curaçao, Willemstad, Curaçao.
| | - Nora van Buitenen
- Department of Psychiatry, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Petra J Gelan
- Psychiatric Center, Dr. D.R. Capriles Hospital, GGz Curaçao, Willemstad, Curaçao
| | - Cleo L Crunelle
- Department of Psychiatry, University Hospital Brussels, Laarbeeklaan 101, B-1090 Brussels, Belgium
| | - Roeland Thomas
- Faculty of Medicine, Caribbean Medical University, Willemstad, Curaçao
| | - Sharon Casseres
- Psychiatric Center, Dr. D.R. Capriles Hospital, GGz Curaçao, Willemstad, Curaçao
| | - Frieda Matthys
- Department of Psychiatry, University Hospital Brussels, Laarbeeklaan 101, B-1090 Brussels, Belgium
| | - Peter van Harten
- Psychiatric Center GGz Centraal, Amersfoort, The Netherlands; Department of Psychiatry, School for Mental Health and Neuroscience, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Wiepke Cahn
- Department of Psychiatry, University Medical Center Utrecht, Utrecht, The Netherlands
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Augustin M, Schoretsanitis G, Pfeifer P, Gründer G, Liebe C, Paulzen M. Effect of fluvoxamine augmentation and smoking on clozapine serum concentrations. Schizophr Res 2019; 210:143-148. [PMID: 31182321 DOI: 10.1016/j.schres.2019.05.033] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 05/18/2019] [Accepted: 05/26/2019] [Indexed: 11/26/2022]
Abstract
BACKGROUND Clozapine (CLZ) is metabolized via cytochrome P450 CYP1A2 to N-desmethylclozapine (NCLZ). Smoking induces CYP1A2 thereby increasing clozapine metabolism whereas fluvoxamine inhibits CYP1A2. Studies suggest that the beneficial effect of fluvoxamine augmentation in raising serum clozapine concentrations also occurs when serum concentrations are low due to smoking. Yet, little is known about the influence of fluvoxamine augmentation on clozapine serum concentrations in smoking versus non-smoking patients. METHODS A TDM database was analyzed. Serum concentrations of CLZ, NCLZ, dose-adjusted serum concentrations (C/D) and metabolite-to-parent ratios (MPR) were compared using non-parametrical tests in four groups: clozapine-monotherapy in non-smokers (VNS, n = 28) and smokers (VS, n = 43); combined treatment with clozapine and fluvoxamine in non-smokers (VNS+F, n = 11) and smokers (VS+F, n = 43). RESULTS The CLZ monotherapy smoking group showed lower values of C/D CLZ of -38.6% (p < 0.001), C/D NCLZ -35.6% (p < 0.001) and a higher MPR (p = 0.021) than in the non-smoking group. The combination of CLZ and fluvoxamine in non-smoking patients led to higher C/D values: C/D CLZ +117.9% (p < 0.001), C/D NCLZ +60.8% (p = 0.029) while the MPR did not differ between groups (p = 0.089). Changes were comparable to fluvoxamine augmentation in the smoking group with increased C/D CLZ of +120.1% (p < 0.001), C/D NCLZ of +85.8% (p < 0.001) and lower MPR (p = 0.006). CONCLUSIONS Smoking in clozapine monotherapy reduced median dose-adjusted serum concentrations more than a third. Combined treatment with fluvoxamine and clozapine led to higher median C/D values in both, smokers and non-smokers. The opposing effects of CYP1A2 induction by smoking and inhibition by fluvoxamine on clozapine serum concentrations balanced out.
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Affiliation(s)
- Marc Augustin
- Department of Psychiatry, Psychotherapy and Psychosomatics, JARA - Translational Brain Medicine, RWTH Aachen University, Aachen, Germany.
| | - Georgios Schoretsanitis
- University Hospital of Psychiatry, Bern, Switzerland; The Zucker Hillside Hospital, Psychiatry Research, Northwell Health, Glen Oaks, NY, USA; Hofstra Northwell School of Medicine, Hempstead, New York and The Feinstein Institute for Medical Research, Manhasset, NY, USA
| | - Philippe Pfeifer
- University Hospital of Psychiatry Bern, University of Bern, Bern, Switzerland
| | - Gerhard Gründer
- Department of Molecular Neuroimaging, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | | | - Michael Paulzen
- Department of Psychiatry, Psychotherapy and Psychosomatics, JARA - Translational Brain Medicine, RWTH Aachen University, Aachen, Germany; Alexianer Hospital Aachen, Aachen, Germany
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Clozapine Metabolism in East Asians and Caucasians: A Pilot Exploration of the Prevalence of Poor Metabolizers and a Systematic Review. J Clin Psychopharmacol 2019; 39:135-144. [PMID: 30811372 DOI: 10.1097/jcp.0000000000001018] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE/BACKGROUND In clozapine therapeutic drug monitoring (TDM) studies, Chinese reached the same concentrations using half the dosage Caucasians use. Defining clozapine poor metabolizers (PMs) requires stratification by ethnicity, smoking, and sex. METHODS/PROCEDURES After sex and smoking stratification in 129 Chinese inpatients (mean, 8.8 TDM samples per patient), we explored the association between the total concentration-dose (C/D) ratio and CYP1A2 (*1C, *1F, and *7) and CYP2C19 alleles (*2 and *3). A systematic literature review identified 22 clozapine TDM prior studies (13 in Caucasians and 7 in East Asians). FINDINGS/RESULTS In our Chinese sample, the mean total clozapine C/D ratio (ng/mL per mg/d) was 1.96 for 22 male smokers, 2.07 for 5 female smokers, 2.47 for 36 male nonsmokers, and 2.95 for 66 female nonsmokers. CYP1A2 *1C had no significant effects, and CYP1A2 *1F had small effects. Five clozapine PMs (4%) needed low clozapine doses of 75 to 115 mg/d to get therapeutic concentrations. Using the same methodology in a published Italian sample, we found 5 PMs (3.3% of 152). In the systematic review, the clozapine C/D ratio (ng/mL per mg/d) was higher when comparing: (1) weighted mean values of 1.57 in 876 East Asians versus 1.07 in 1147 Caucasians and (2) ranks of 8 East Asians versus 13 Caucasian samples (P < 0.001). IMPLICATIONS/CONCLUSIONS Future TDM studies need to further explore the frequency of clozapine PMs after sex and smoking stratification in East Asian and Caucasian patients. Compared with Caucasians, East Asians appear to have a clinically relevant decrease in clozapine clearance.
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