Masaru Tsukahara

ORCID: 0000-0003-2755-1331
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About
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Research Areas
  • Schizophrenia research and treatment
  • Bipolar Disorder and Treatment
  • Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
  • Mental Health and Psychiatry
  • Animal Genetics and Reproduction
  • Electroconvulsive Therapy Studies
  • Treatment of Major Depression
  • Chromosomal and Genetic Variations
  • Pharmacological Effects and Toxicity Studies
  • Renal function and acid-base balance
  • Cerebrovascular and genetic disorders
  • Epilepsy research and treatment
  • Healthcare Decision-Making and Restraints
  • Psychosomatic Disorders and Their Treatments
  • Pharmacogenetics and Drug Metabolism
  • Genomic variations and chromosomal abnormalities
  • Pharmaceutical Practices and Patient Outcomes
  • Health Systems, Economic Evaluations, Quality of Life
  • Alcoholism and Thiamine Deficiency
  • Liver Disease and Transplantation
  • Psychiatric care and mental health services
  • Neurological diseases and metabolism
  • Child and Adolescent Psychosocial and Emotional Development
  • Pharmaceutical studies and practices
  • Mitochondrial Function and Pathology

Okayama Psychiatric Medical Center
2018-2024

Tokushima University
2015

José de León Georgios Schoretsanitis Robert L. Smith Espen Molden Anssi Solismaa and 95 more Niko Seppälä Miloslav Kopeček Patrik Švancer I. Cánovas Olmos Carina Ricciardi Celso Iglesias García Ana Iglesias-Alonso Edoardo Spina Can‐Jun Ruan Chuanyue Wang Gang Wang Yi‐lang Tang Shih‐Ku Lin Hsien‐Yuan Lane Yong Sik Kim Se Hyun Kim Anto P. Rajkumar Dinora F. González‐Esquivel Helgi Jung–Cook Trino Baptista Christopher Rohde Jimmi Nielsen Hélène Verdoux Clélia Quilès Emílio J. Sanz Carlos De las Cuevas Dan Cohen Peter F.J. Schulte Aygün Ertuğrul A. Elif Anıl Yağcıoğlu Nitin Chopra Betsy McCollum Charles Shelton Robert O. Cotes Arun R. Kaithi John M. Kane Saeed Farooq Chee H. Ng John Bilbily Christoph Hiemke Carlos López‐Jaramillo Ian R. McGrane Fernando Lana Chin B. Eap Manuel Arrojo Flavian Ștefan Rădulescu Erich Seifritz Susanna Every‐Palmer Chad A. Bousman Emmanuel Bebawi Rahul Bhattacharya Deanna L. Kelly Yuji Otsuka Judit Lazáry Rafael Torres Agustín Yécora Mariano Motuca Sherry Kit Wa Chan Monica Zolezzi Sami Ouanes Domenico De Berardis Sandeep Grover Ric M. Procyshyn Richard A. Adebayo О.О. Кирилочев A. G. Soloviev Konstantinos Ν. Fountoulakis Alina Wilkowska Wiesław Jerzy Cubała Muhammad Ayub Alzira Silva Raphael M. Bonelli José María Villagrán Moreno Benedicto Crespo‐Facorro Henk Temmingh Eric Decloedt Maria Rosel Pedro Hiroyoshi Takeuchi Masaru Tsukahara Gerhard Gründer Marina Šagud Andreja Čelofiga Dragana Ignjatović Ristić Bruno Bertolucci Ortiz Hélio Elkis António Pacheco Palha Adrián LLerena Emilio Fernández-Egea Dan Siskind Abraham Weizman R. Masmoudi Shamin Mohd Saffian Jonathan G. Leung P.F. Buckley Stephen R. Marder

Abstract This international guideline proposes improving clozapine package inserts worldwide by using ancestry-based dosing and titration. Adverse drug reaction (ADR) databases suggest that is the third most toxic in United States (US), it produces four times higher pneumonia mortality than agranulocytosis or myocarditis. For trough steady-state serum concentrations, therapeutic reference range narrow, from 350 to 600 ng/mL with potential for toxicity ADRs as concentrations increase....

10.1055/a-1625-6388 article EN Pharmacopsychiatry 2021-12-15

Abstract Introduction No study has investigated the impact of smoking habits and concomitant valproic acid (VPA) use on clinical outcomes in maintenance treatment with clozapine. Thus, we aimed to examine effect VPA relapse during first year after discharge patients treatment‐resistant schizophrenia (TRS) receiving Methods This retrospective cohort included TRS who were initiated clozapine hospitalization discharged between April 2012 January 2021 two tertiary psychiatric hospitals Japan....

10.1111/acps.13612 article EN cc-by-nc-nd Acta Psychiatrica Scandinavica 2023-09-08

Psychopharmacotherapy for patients with schizophrenia in Japan has a long history of polypharmacy, which is rare worldwide but remains critical problem. One reason this that clozapine was not available until 2009. We aimed to investigate the changes psychopharmacotherapy over 12 years pre- and post-introduction clarify how changed introduction clozapine. retrospectively collected data from medical records inpatients diagnosed at Okayama Psychiatric Medical Center. Chlorpromazine equivalent...

10.1016/j.ajp.2024.104047 article EN cc-by-nc Asian Journal of Psychiatry 2024-04-09

Sex chromosomes of extant eutherian species are too ancient to reveal the process that initiated sex-chromosome differentiation. By contrast, neo-sex generated by sex-autosome fusions recent origin in Tokudaia muenninki expected be evolutionarily 'young', and therefore provide a good model which elucidate early phases sex chromosome evolution. Here we describe genomic evolution T. differentiation.FISH mapping male, using 50 BAC clones as probes, revealed no chromosomal rearrangements between...

10.1186/s12862-015-0514-y article EN cc-by BMC Evolutionary Biology 2015-10-29

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 support the superiority of clozapine over once-daily dosing. To our knowledge, have no studies examining differences actual concentrations or adverse effects between 2 strategies clozapine. We aimed compare and regimens, examine relationships these regimens with psychiatric symptoms clozapine.We analyzed data from 108...

10.1097/jcp.0000000000001492 article EN Journal of Clinical Psychopharmacology 2021-12-08

Although reported for Caucasians, changes in plasma clozapine levels after smoking cessation East Asians remain unclear. We here investigated before and Japanese inpatients with schizophrenia. conducted a retrospective chart review of 14 schizophrenia who were being treated between June 1, 2019, July 31, 2019 smokers as the day on which ban was instituted tertiary public psychiatric hospital. The primary outcome individual differences ban, compared using paired t-tests. mean level...

10.18926/amo/63407 article EN PubMed 2022-04-01

This retrospective cohort study aimed to investigate the longitudinal changes in clozapine dose over a 5-year period patients with treatment-resistant schizophrenia (TRS). Patients TRS who were administered at hospital between April 2012 and December 2016 continued treatment for least 1 year included. Clozapine doses compared dose-fixation point, defined as when same regimen of had been 8 weeks or longer, post-dose-fixation phase, 12, 36 60 months after initiation. We included 103 found no...

10.1097/yic.0000000000000429 article EN International Clinical Psychopharmacology 2022-09-15
José de León Georgios Schoretsanitis Robert L. Smith Espen Molden Anssi Solismaa and 95 more Niko Seppälä Miloslav Kopeček Patrik Švancer I. Cánovas Olmos Carina Ricciardi Celso Iglesias García Ana Iglesias-Alonso Edoardo Spina Can‐Jun Ruan Chuanyue Wang Gang Wang Yi‐lang Tang Shih‐Ku Lin Hsien‐Yuan Lane Yong Sik Kim Se Hyun Kim Anto P. Rajkumar Dinora F. González‐Esquivel Helgi Jung–Cook Trino Baptista Christopher Rohde Jimmi Nielsen Hélène Verdoux Clélia Quilès Emílio J. Sanz Carlos De las Cuevas Dan Cohen Peter F.J. Schulte Aygün Ertuğrul A. Elif Anıl Yağcıoğlu Nitin Chopra Betsy McCollum Charles Shelton Robert O. Cotes Arun R. Kaithi John M. Kane Saeed Farooq Chee H. Ng John Bilbily Christoph Hiemke Carlos López‐Jaramillo Ian R. McGrane Fernando Lana Chin B. Eap Manuel Arrojo Flavian Ștefan Rădulescu Erich Seifritz Susanna Every‐Palmer Chad A. Bousman Emmanuel Bebawi Rahul Bhattacharya Deanna L. Kelly Yuji Otsuka Judit Lazáry Rafael Torres Agustín Yécora Mariano Motuca Sherry Kit Wa Chan Monica Zolezzi Sami Ouanes Domenico De Berardis Sandeep Grover Ric M. Procyshyn Richard A. Adebayo О.О. Кирилочев A. G. Soloviev Konstantinos Ν. Fountoulakis Alina Wilkowska Wiesław Jerzy Cubała Muhammad Ayub Alzira Silva Raphael M. Bonelli José María Villagrán Moreno Benedicto Crespo‐Facorro Henk Temmingh Eric Decloedt Maria Rosel Pedro Hiroyoshi Takeuchi Masaru Tsukahara Gerhard Gründer Marina Šagud Andreja Čelofiga Dragana Ignjatović Ristić Bruno Bertolucci Ortiz Hélio Elkis António Pacheco Palha Adrián LLerena Emilio Fernández-Egea Dan Siskind Abraham Weizman R. Masmoudi Shamin Mohd Saffian Jonathan G. Leung P.F. Buckley Stephen R. Marder

10.1016/j.psiq.2023.100415 article ES Psiquiatría Biológica 2023-09-01
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