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Title

Development and validation of a rapid high-performance liquid chromatography method for the quantification of exenatide
Authors
Bachhav, Yogeshwar
Kalia, Yogeshvar
Published in Biomedical Chromatography. 2011, vol. 25, no. 7, p. 838-42
Abstract The objective was to develop a simple HPLC method to quantify exenatide--a 39 amino acid residue incretin mimetic used in diabetes therapy. To date, only non-validated, sometimes incomplete, gradient methods have been reported in the literature. Isocratic separation was achieved using a C₄ column and a mixed solvent system, A-B-C (48:45:7, v/v/v; pH* 5.2), where A represents KH₂PO₄ (pH 4.5; 0.1 M) and MeCN (60:40, v/v), B corresponds to NaClO₄ ·H₂O (pH 6.0; 0.2 M) and MeCN (60:40, v/v), and C is water. Exenatide eluted at 3.64 min and the total run time was 6 min. The method was specific and the response was accurate, precise and linear from 0.75 to 25 µg/mL. It was used to quantify exenatide transport across intact and laser-porated porcine skin in vitro as a function of laser fluence [0 (i.e. intact skin), 9 and 15 J/cm², respectively]. Although no permeation was observed using intact skin, cumulative exenatide permeation after 8 h through laser porated skin was 9.6 ± 6.5 and 12.4 ± 6.4 µg/cm² at fluences of 9 and 15 J/cm², respectively. This is the first validated isocratic method for exenatide quantification and it may be of use in quality control analysis and with other biological matrices.
Keywords Administration, Cutaneous — Analysis of Variance — Animals — Chromatography, High Pressure Liquid/methods — Lasers — Least-Squares Analysis — Peptides/administration & dosage/analysis/pharmacokinetics — Permeability — Porosity — Reproducibility of Results — Sensitivity and Specificity — Skin/chemistry — Swine — Venoms/administration & dosage/analysis/pharmacokinetics
Identifiers
PMID: 20878660
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Structures
Faculté des sciences / Section des sciences pharmaceutiques
Citation
(ISO format) 		BACHHAV, Yogeshwar, KALIA, Yogeshvar. Development and validation of a rapid high-performance liquid chromatography method for the quantification of exenatide. In: Biomedical Chromatography, 2011, vol. 25, n° 7, p. 838-42. doi: 10.1002/bmc.1526 https://archive-ouverte.unige.ch/unige:22834

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Deposited on : 2012-09-11

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