TY - JOUR
T1 - Simultaneous quantification of high-dose naloxone and naloxone-3-β-D-glucuronide in human plasma by UHPLC-MS/MS
AU - Kongstad, Kenneth Thermann
AU - Papathanasiou, Theodoros
AU - Springborg, Anders
AU - Lund, Trine Meldgaard
AU - Werner, Mads Utke
AU - Stærk, Dan
PY - 2019/2
Y1 - 2019/2
N2 - Aim: High-dose administration of the μ-opioid receptor inverse agonist naloxone (NX), has previously been demonstrated to reinstate nocifensive behavior in the late phase of inflammatory injuries. However, no current analytical methods can provide pharmacokinetic insight into the pharmacodynamic response of high-dose administration of NX. Materials & methods: Based on protein precipitation using 50 μl human plasma, NX and naloxone-β-d-glucuronide (NXG) was analysed by UHPLC-MS/MS with 6 min cycle time. Results: A method for quantification of high-dose administered NX and NXG was developed and validated with intra- and interday precision and accuracy within ≤8.5% relative standard deviation (RSD) and -1.2-5.5% relative error (RE) for NX and ≤9.6% RSD and 0.6-6.5% RE for NXG. The method show excellent internal standard corrected matrix effects. Conclusion: A rapid UHPLC-MS/MS method was developed for quantification of NX and NXG in human plasma within 10-4000 ng/ml.
AB - Aim: High-dose administration of the μ-opioid receptor inverse agonist naloxone (NX), has previously been demonstrated to reinstate nocifensive behavior in the late phase of inflammatory injuries. However, no current analytical methods can provide pharmacokinetic insight into the pharmacodynamic response of high-dose administration of NX. Materials & methods: Based on protein precipitation using 50 μl human plasma, NX and naloxone-β-d-glucuronide (NXG) was analysed by UHPLC-MS/MS with 6 min cycle time. Results: A method for quantification of high-dose administered NX and NXG was developed and validated with intra- and interday precision and accuracy within ≤8.5% relative standard deviation (RSD) and -1.2-5.5% relative error (RE) for NX and ≤9.6% RSD and 0.6-6.5% RE for NXG. The method show excellent internal standard corrected matrix effects. Conclusion: A rapid UHPLC-MS/MS method was developed for quantification of NX and NXG in human plasma within 10-4000 ng/ml.
U2 - 10.4155/bio-2018-0134
DO - 10.4155/bio-2018-0134
M3 - Journal article
C2 - 30661370
SN - 1757-6180
VL - 11
SP - 165
EP - 173
JO - Bioanalysis
JF - Bioanalysis
ER -