Abstract
Purpose
The major aim of this multicenter retrospective analysis was to examine the relationship between paliperidone serum concentrations and clinical effects in patients treated with this new antipsychotic drug. Intra-individual variability in trough serum concentrations was also analyzed in patients under treatment with either the paliperidone-extended release (ER) formulation or the risperidone immediate-release formulation.
Methods
Data were obtained from 217 patients of four medical centers who were being followed by therapeutic drug monitoring (TDM). Serum concentrations were associated with clinical response using Clinical Global Impressions (CGI) scores.
Results
The mean concentration of paliperidone was 36 ± 25 ng/ml, and the mean dose corrected concentration (C/D) was 4.7 ± 2.9 ng/ml/mg. Among patients receiving paliperidone as antipsychotic monotherapy and who showed at least a much improved level according to the CGI scores, the 25th–75th percentiles of paliperidone concentrations were 20–52 ng/ml; these were very similar to the recommended therapeutic range of 20–60 ng/ml for risperidone plus 9-hydroxy-risperidone (active moiety). In 13 patients treated with paliperidone ER and 17 patients treated with risperidone, all of whom had repeated drug measurements, the intra- and inter-individual variabilities of trough serum concentrations were similar for the paliperidone and risperidone active moiety, ranging between 30 and 35%.
Conclusion
Based on these results, we conclude that risperidone and paliperidone have a similar therapeutic range and similar intra-individual variability in terms of trough serum levels. For treatment optimization, monitoring of plasma concentrations may be as useful for paliperidone as for risperidone.



Similar content being viewed by others
References
Kane J, Canas F, Kramer L et al (2007) Treatment of schizophrenia with paliperidone extended-release tablets: A 6−week placebo−controlled trial. Schizophr Res 90:147–161
Kramer M, Simpson G, Macciulis V et al (2007) Paliperidone extended−release tablets for prevention of symptom recurrence in patients with schizophrenia. J Clin Psychopharmacol 27(1):6–14
Leysen JE, Gommeren W, Enes D, Janssen PA (1988) Biochemical profile of risperidone, a new antipsychotic. J Pharmacol Exp Ther 247(2):661–670
Leysen JE, Janssen PM, Megens AA, Schotte A (1994) Risperidone: a novel antipsychotic with balanced serotonin-dopamine antagonism, receptor occupancy profile, and pharmacologic activity. J Clin Psychiatry 55[Suppl]:5–12
Karlsson P, Denker E, Nyberg S, Manaert E et al (2005) Pharmacokinetics, dopamine D2 and serotonin 5-HT2A-receptor occupancy and safety profile of paliperidone extended-release in healthy subjects: two open-label, single-dose studies. Clin Pharmacol Ther 79:P74
Vermeir M, Naessens I, Boom S, Clenton A (2008) Absorption, metabolism, and excretion of paliperidone, a new monoaminergic antagonist, in humans. Drug Metab Dispos 36:769–779
Heykants J, Huang ML, Mennens G, Woestenborghs R (1994) The pharmacokinetics of risperidone in humans: a summary. J Clin Psychiatry 55[Suppl]:13–17
Medori R, Mannaert E, Gründer G (2006) Plasma antipsychotic concentration and receptor occupancy, with special focus on risperidone long-acting injectable. Eur Neuropsychopharmacol 16(4):233–240
Baumann P, Hiemke C et al (2004) The AGNP – TDM expert group consensus guidelines: therapeutic drug monitoring in psychiatry. Pharmacopsychiatry 37:243–265
Aravagiri M, Marder SR, Wirshing D, Wirshing WC (1998) Plasma concentrations of risperidone and its 9-hydroxy metabolite and their relationship to dose in schizophrenic patients: simultaneous determination by a high performance liquid chromatography with electrochemical detection. Pharmacopsychiatry 31(3):102–109
Lane HY, Chiu WC, Chou JC, Wu ST, Su MH, Chang WH (2000) Risperidone in acutely exacerbated schizophrenia: dosing strategies and plasma levels. J Clin Psychiatry 61(3):209–214
Guy W (1976) Clinical global impressions. In: ECDEU assessment manual for psychopharmacology. DHEW Publ No ADM 76-338. National Institute of Mental Health, Rockville, pp 218–222
Lingjaerde O, Ahlfors UG, Bech P, Dencker SJ, Elgen K (1987) The UKU side effect rating scale. A new comprehensive rating scale for psychotropic drugs and a cross-sectional study of side effects in neuroleptic-treated patients. Acta Psychiatr Scand 334:1–100
Kirschbaum KM, Finger S, Vogel F, Burger R, Gerlach M, Riederer P, Hiemke C (2006) LC with column-switching and spectrophometric detection for determination of risperidone and 9-OH-risperidone. Chromatographia 67:321–324
Riedel M, Schwarz MJ, Strassnig M, Spellmann I, Müller-Arends A, Weber K, Zach J, Müller N, Möller HJ (2005) Risperidone plasma levels, clinical response and side-effects. Eur Arch Psychiatry Clin Neurosci 255(4):261–268
Aichhorn W, Weiss U, Marksteiner J, Kemmler G, Walch T, Zernig G, Stelzig-Schoeler R, Stuppaeck C, Geretsegger C (2005) Influence of age and gender on risperidone plasma concentrations. J Psychopharmacol 19(4):395–401
SPC Invega. Available at: http://www.emea.europa.eu/humandocs/PDFs/EPAR/invega/H-746-en6.pdf
Gupta SK, Shah JC, Hwang SS (1999) Pharmacokinetic and pharmacodynamic characterization of OROS® and immediate-release amitriptyline. Br J Clin Pharmacol 48:71–78
Jung SM, Kim KA, Park JY (2005) Cytochrome P450 3A inhibitor itraconazole affects plasma concentrations of risperidone and 9-hydroxyrisperidone in schizophrenic patients. Clin Pharmacol Ther 78(5):520–528
Ereshefsky L (1996) Pharmacokinetics and drug interactions: updates for new antipsychotics. J Clin Psychiatry 57[Suppl 11]:12–25
Scordo MG, Spina E, Facciola G, Avenoso A, Johansson I, Dahl ML (1999) Cytochrome P450 2D6 genotype and steady state plasma levels of risperidone and 9-hydroxyrisperidone. Psychopharmacology 147:300–305
Doran A, Obach S, Yasgar AS, Zhang C (2005) The impact of p-glycoprotein on the disposition of drugs targeted for indications of the central nervous system: evaluation using the MDR1A/1B knockout mouse model. Drug Metab Dispos 33(1):165–174
Gunes A, Spina E, Dahl ML, Scordo MG (2008) ABCB1 polymorphismus influence steady-state plasma levels of 9-hydroxyrisperidone and risperidone active moiety. Ther Drug Monit 30(5):628–633
Kirschbaum KM, Henken S, Hiemke C, Schmitt U (2008) Pharmacodynamic consequences of P-glycoprotein-dependent pharmacokinetics of risperidone and haloperidol in mice. Behav Brain Res 188(2):298–303
Müller MJ, Regenbogen B, Härtter S, Eich FX, Hiemke C (2007) Therapeutic drug monitoring of optimizing amisulpride therapy in patients with schizophrenia. J Psychiatr Res 41:673–679
Arakawa R, Ito H, Takano A, Takahashi H, Morimoto T, Sassa T, Ohta K, Kato M, Okubo Y, Suhara T (2008) Dose-finding study of paliperidone ER based on striatal and extrastriatal dopamine D2 receptor occupancy in patients with schizophrenia. Psychopharmacology (Berl) 197(2):229–235
Farde L, Nordström AL, Wiesel FA, Pauli S, Hallidin C, Sedvall G (1992) Positron emission tomographic analysis of central D1 and D2 dopamine receptor occupancy in patients treated with classical neuroleptics and clozapine. Relation to extrapyramidal side effects. Arch Gen Psychiatry 49:538–544
Kapur S, Zipursky R, Jones C, Remington G, Houle S (2000) Relationship between dopamine D(2) occupancy, clinical response, and side effects: a double-blind PET study of first-episode schizophrenia. Am J Psychiatry 157:514–520
Gründer G, Carlsson A, Wong DF (2003) Mechanism of new antipsychotic medications: occupancy is not just antagonism. Arch Gen Psychiatry 60(10):974–977
Nyberg S, Eriksson B, Oxenstierna G, Halldin C, Farde L (1999) Suggested minimal effective dose of risperidone based on PET-measured D2 and 5-HT2A receptor occupancy in schizophrenic patients. Am J Psychiatry 156(6):869–875
Remington G, Mamo D, Labelle A, Reiss J, Shammi C, Mannaert E, Mann S, Kapur S (2006) A PET study evaluating dopamine D2 receptor occupancy for long-acting injectable risperidone. Am J Psychiatry 163(3):396–401
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Nazirizadeh, Y., Vogel, F., Bader, W. et al. Serum concentrations of paliperidone versus risperidone and clinical effects. Eur J Clin Pharmacol 66, 797–803 (2010). https://doi.org/10.1007/s00228-010-0812-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00228-010-0812-7