Oral Absorption Characteristics and Pharmacokinetics of Colchicine in Healthy Volunteers after Single and Multiple Doses
- 1 October 1996
- journal article
- research article
- Published by Wiley in The Journal of Clinical Pharmacology
- Vol. 36 (10), 874-883
- https://doi.org/10.1002/j.1552-4604.1996.tb04753.x
Abstract
Colchicine is an antimitotic drug used to treat gout and familial Mediterranean fever. Absolute bioavailability, pharmacokinetics, and absorption characteristics of colchicine after single 1.0-mg doses in oral solution or tablet form or 0.5-mg intravenous doses were compared in 6 subjects. This study was combined with 14 days of multiple-dose administration of 1.0-mg colchicine tablets in 6 subjects. Serial blood samples were collected for 48 hours after administration of single doses and for 120 hours after the last dose in the multiple-dose regimen. Plasma colchicine profiles as measured by radioimmunoassay were analyzed using deconvolution and compartmental methods. After intravenous bolus injection of colchicine, the area under the concentration-time curve (AUC) was 61.2 ± 12.7 ng · hr/mL, steady-state volume of distribution (V88) was 419 ± 95 L, systemic clearance (Cl) was 8.5 ± 1.8 L/hr, and the terminal half-life (t1/2) was 57.8 ± 10.7 hours. After oral administration in solution form, peak plasma concentrations (Cmax) of 6.50 ± 1.03 ng/mL were reached at time (tmax) 1.07 ± 0.55 hours, with a rate of 0.109 ± 0.024 hr−1 (Cmax/AUC); bioavailability was 47 ± 14%. Oral tablets yielded similar Cmax, tmax, and Cmax/AUC values, but AUC was significantly lower. Most participants exhibited a secondary peak within 6 hours of administration, possibly in relation to a second absorption site or enterohepatic recirculation. This second absorption process was significantly longer than the first one, and accounted for a similar amount of colchicine absorbed. From the multiple-dose study, a model including an alteration of colchicine absorption due to possible drug-induced gastrointestinal modifications allowed better determination of steady-state plasma concentrations of colchicine.Keywords
This publication has 18 references indexed in Scilit:
- Effect of Colchicine on Drug Absorption from the Rat Small Intestine in Situ and in VitroActa Pharmacologica et Toxicologica, 2009
- Colchicine alters the quantitative and qualitative display of selectins on endothelial cells and neutrophils.JCI Insight, 1995
- Crystal-induced neutrophil activation. IV. Specific inhibition of tyrosine phosphorylation by colchicine.JCI Insight, 1993
- Colchicine in the Treatment of Cirrhosis of the LiverNew England Journal of Medicine, 1988
- DOES COLCHICINE WORK? THE RESULTS OF THE FIRST CONTROLLED STUDY IN ACUTE GOUTAustralian and New Zealand Journal of Medicine, 1987
- Colchicine overdose: Report of two cases and review of the literatureAnnals of Emergency Medicine, 1981
- A sensitive radioimmunoassay for colchicineJournal of Pharmacy and Pharmacology, 1980
- Mechanism of Action of Colchicine in Acute Urate Crystal-Induced ArthritisJCI Insight, 1979
- Myocardial colchicine-binding proteins: Possible relation to DNA synthesis initiationJournal of Molecular and Cellular Cardiology, 1979
- A comparison of numerical integrating algorithms by trapezoidal, Lagrange, and spline approximationJournal of Pharmacokinetics and Biopharmaceutics, 1978