Cited by 95Schizophrenia research and treatmentPharmacogenetics and Drug MetabolismNeurotransmitter Receptor Influence on Behavior

Prediction of response to risperidone treatment with respect to plasma concencentrations of risperidone, catecholamine metabolites, and polymorphism of cytochrome P450 2D6

Kakihara, Shingo, Yoshimura, Reiji, Shinkai, Koji, Matsumoto, Chima, Goto, Makiko, Kaji, Kyoko, Yamada, Yasuhisa, Ueda, Nobuhisa +2 more·2005·International Clinical Psychopharmacology

Abstract

In the present study, we examined the relationships between plasma concentrations of risperidone and clinical responses, extrapyramidal symptoms, plasma levels of cotinine and caffeine, or cytochrome (cyp)2D6 genotypes. In addition, we also investigated the relationships between plasma levels of 3-methoxy-4-hydroxyphenylglycol (MHPG) or homovanillic (HVA) acid and clinical responses to risperidone. One hundred and 36 patients (male/female: 58/78, age 37+/-13 years) who met DSM-IV criteria for schizophrenia, schizoaffective disorder, delusional disorder and brief psychotic disorder, and who were being treated with risperidone alone, were evaluated regarding their clinical improvement and extrapyramidal symptoms using the Positive and Negative Syndrome Scale (PANSS) and Simpson and Angus (SAS), respectively, and plasma levels of cotinine, caffeine, MHPG and HVA were analysed by high-performance liquid chromatography. The cyp2D6*5 and *10 alleles were identified using the polymerase chain reaction. There was a positive correlation between plasma levels of risperidone plus 9-hydroxyrisperidone (active moiety) and SAS scores, but not the PANSS. Pretreatment HVA levels in responders were higher than those in nonresponders. In addition, there was a negative correlation between changes in HVA levels and improvement in PANSS scores. There was no association between plasma levels of risperidone and plasma levels of cotinine or caffeine. Furthermore, there were no differences in the risperidone/9-hydroxyrisperidone ratio, clinical improvements and extrapyramidal symptoms among cyp2D6 genotypes. These results indicate that pretreatment HVA levels and plasma concentrations of active moiety might play a part in predicting the clinical response and occurrence of extrapyramidal symptoms, respectively, when treating patients with risperidone.

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Crossref · 10.1097/00004850-200503000-00002

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  • Significant positive associations have been made between plasma concentration and adverse events of antipsychotics.

    “Significant positive associations have been made between plasma concentration and adverse events of APs56; therefore, long-acting injectables warrant further investigation to determine if they may curb autonomic effects of APs and potentially limit the occurrence of adverse side effects of the medications.”

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Authors
Kakihara, S., Yoshimura, R., Shinkai, K., Matsumoto, C., Goto, M., Kaji, K., Yamada, Y., Ueda, N., Ohmori, O., & Nakamura, J.
Affiliations
University of Occupational and Environmental Health Japan (JP)
Corresponding author
Yoshimura, Reiji
Venue
International Clinical Psychopharmacology
Published
2005-03
Volume
20
Issue
2
Pages
71-78
ISSN
0268-1315 (ISSN-L)
OpenAlex
W2043985392
Cited by
95
References
28
Citations by year
2026: 1 · 2025: 3 · 2024: 5 · 2023: 1 · 2022: 2 · 2021: 6 · 2019: 3 · 2018: 6 · 2017: 3 · 2016: 8 · 2015: 1 · 2014: 2 · 2013: 9 · 2012: 6
FWCI
3.81
Type
journal article
Language
en
Open access
closed
Locations
  • International Clinical Psychopharmacology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmacology › Pharmacogenetics and Drug Metabolism
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
risperidone, treatment response prediction, extrapyramidal symptoms, homovanillic acid, MHPG, catecholamine metabolites, paliperidone, schizophrenia, antipsychotic pharmacokinetics, CYP2D6*5, CYP2D6*10, plasma cotinine
MeSH terms
Paliperidone Palmitate, Adolescent, Adult, Aged, Central Nervous System Stimulants, Basal Ganglia Diseases, Caffeine, Catecholamines, Cotinine, Cues, Female, Homovanillic Acid, Humans, Isoxazoles, Male, Methoxyhydroxyphenylglycol, Middle Aged, Polymorphism, Genetic, Psychiatric Status Rating Scales, Pyrimidines, Schizophrenia, Smoking, Antipsychotic Agents, Risperidone, Cytochrome P-450 CYP2D6

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