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Population pharmacokinetics of oral ivermectin in venous plasma and dried blood spots in healthy volunteers
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
 
ID 4492719
Author(s) Duthaler, Urs; Suenderhauf, Claudia; Karlsson, Mats O.; Hussner, Janine; Meyer Zu Schwabedissen, Henriette; Krähenbühl, Stephan; Hammann, Felix
Author(s) at UniBasel Meyer zu Schwabedissen, Henriette
Hussner, Janine
Duthaler, Urs
Krähenbühl, Stephan
Year 2018
Title Population pharmacokinetics of oral ivermectin in venous plasma and dried blood spots in healthy volunteers
Journal British journal of clinical pharmacology
Volume 85
Number 3
Pages / Article-Number 626-633
Mesh terms Administration, Oral; Adult; Antiparasitic Agents, pharmacokinetics; Dried Blood Spot Testing; Drug Repositioning, standards; Feasibility Studies; Female; Healthy Volunteers; Humans; Ivermectin, pharmacokinetics; Malaria, prevention & control; Male; Mass Drug Administration, standards; Models, Biological; Mosquito Vectors, drug effects; Scabies, drug therapy; Time Factors; Young Adult
Abstract The anthelminthic ivermectin is receiving new attention as it is being repurposed for new indications such as mass drug administrations for the treatment of scabies or in malaria vector control. As its pharmacokinetics are still poorly understood, we aimed to characterize the population pharmacokinetics of ivermectin in plasma and dried blood spots (DBS), a sampling method better suited to field trials, with special focus on the influence of body composition and enterohepatic circulation.; We performed a clinical trial in twelve healthy volunteers who each received a single oral dose of 12 mg ivermectin, and collected peripheral venous and capillary DBS samples. We determined ivermectin concentrations in plasma and DBS by liquid chromatography tandem mass spectrometry using a fully automated and scalable extraction system for DBS sample processing. Pharmacokinetic data were analyzed using non-linear mixed effects modeling.; A two-compartment model with a transit absorption model, first-order elimination, and weight as an influential covariate on central volume of distribution and clearance best described the data. The model estimates (inter-individual variability) for a 70 kg subject were: apparent population clearance 7.7 (25%) L/h, and central and peripheral volumes of distribution 89 (10%) L and 234 (20%) L, respectively. Concentrations obtained from DBS samples were strongly linearly correlated (r; 2; = 0.97) with plasma concentrations, and on average 30% lower.; The model accurately depicts population pharmacokinetics of plasma and DBS concentrations over time for oral ivermectin. The proposed analytical workflow is scalable and applicable to the requirements of mass drug administrations.
Publisher WILEY
ISSN/ISBN 1365-2125
edoc-URL https://edoc.unibas.ch/71533/
Full Text on edoc No
Digital Object Identifier DOI 10.1111/bcp.13840
PubMed ID http://www.ncbi.nlm.nih.gov/pubmed/30566757
ISI-Number WOS:000458936500016
Document type (ISI) Journal Article
 
   

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