University of Massachusetts Medical School Faculty Publications
Title
SSRI-antipsychotic combination in psychotic depression: sertraline pharmacokinetics in the presence of olanzapine, a brief report from the STOP-PD study
UMMS Affiliation
Department of Psychiatry
Publication Date
2016-05-01
Document Type
Article
Disciplines
Medical Pharmacology | Psychiatry | Psychiatry and Psychology
Abstract
OBJECTIVE: We recently reported an unexpected interaction between olanzapine and sertraline in a population being treated for psychotic depression. Contrary to knowledge of cytochrome p450 interactions sertraline increased apparent clearance of olanzapine by 30%. Here we examined the pharmacokinetics of sertraline in the same population. Existing studies suggest that sertraline apparent clearance is significantly increased in male subjects and suggested an age/sex interaction.
METHODS: We studied subjects undergoing combination of sertraline/olanzapine treatment for psychotic depression in the Study of the Pharmacotherapy of Psychotic Depression. Nonlinear mixed effect modelling software was used to examine the sertraline pharmacokinetics, evaluating age, sex, race, and olanzapine exposure as covariates.
RESULTS: Eighty-seven subjects (median age 62 years, 28 male subjects, 11 African-Americans) provided 138 samples for sertraline concentration. Olanzapine exposure had a 14.8-fold range. A one compartment model with combined residual error described the sertraline concentration data adequately. Half-life and sex effect on sertraline apparent clearance (males averaging 50% higher (p < 0.005); 96.6 l/h vs 64.8 in female subjects) were similar to previous reports. No other covariate (age, race or olanzapine exposure) had a significant impact on apparent clearance, and no age/sex interaction emerged.
CONCLUSION: Sertraline pharmacokinetics were similar to historical descriptions in populations not taking antipsychotics. Unlike our unexpected finding that sertraline increases olanzapine apparent clearance, olanzapine exposure had no impact on sertraline pharmacokinetics.
Keywords
olanzapine, pharmacokinetics, sertraline
DOI of Published Version
10.1002/hup.2532
Source
Hum Psychopharmacol. 2016 May;31(3):252-5. doi: 10.1002/hup.2532. Epub 2016 Apr 6. Link to article on publisher's site
Related Resources
Journal/Book/Conference Title
Human psychopharmacology
PubMed ID
27060853
Repository Citation
Davies SJ, Mulsant BH, Flint A, Meyers BS, Rothschild AJ, Whyte EM, Kirshner MM, Sorisio D, Pollock BG, Bies RR, STOP-PD study group. (2016). SSRI-antipsychotic combination in psychotic depression: sertraline pharmacokinetics in the presence of olanzapine, a brief report from the STOP-PD study. University of Massachusetts Medical School Faculty Publications. https://doi.org/10.1002/hup.2532. Retrieved from https://escholarship.umassmed.edu/faculty_pubs/1118