Nakhla, D., Hussien, L., Nasef, N., Hassan, H., Abdallah, I. (2020). Sensitive UPLC–MS/MS Method for Oxycodone Quantification in Serum and Brain Tissue Homogenates: Application to an Interaction Study in Rats. Journal of Advanced Pharmacy Research, 4(3), 83-93. doi: 10.21608/aprh.2020.31331.1109
David Nakhla; Lobna Hussien; Nancy Nasef; Hazem Hassan; Inas Abdallah. "Sensitive UPLC–MS/MS Method for Oxycodone Quantification in Serum and Brain Tissue Homogenates: Application to an Interaction Study in Rats". Journal of Advanced Pharmacy Research, 4, 3, 2020, 83-93. doi: 10.21608/aprh.2020.31331.1109
Nakhla, D., Hussien, L., Nasef, N., Hassan, H., Abdallah, I. (2020). 'Sensitive UPLC–MS/MS Method for Oxycodone Quantification in Serum and Brain Tissue Homogenates: Application to an Interaction Study in Rats', Journal of Advanced Pharmacy Research, 4(3), pp. 83-93. doi: 10.21608/aprh.2020.31331.1109
Nakhla, D., Hussien, L., Nasef, N., Hassan, H., Abdallah, I. Sensitive UPLC–MS/MS Method for Oxycodone Quantification in Serum and Brain Tissue Homogenates: Application to an Interaction Study in Rats. Journal of Advanced Pharmacy Research, 2020; 4(3): 83-93. doi: 10.21608/aprh.2020.31331.1109
Sensitive UPLC–MS/MS Method for Oxycodone Quantification in Serum and Brain Tissue Homogenates: Application to an Interaction Study in Rats
1Division of Pharmaceutics and Translational Therapeutics, University of Iowa, College of Pharmacy, Iowa City, USA
2Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt.
3Department of Analytical Chemistry, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt.
4Department of Pharmaceutical Sciences, University of Maryland, School of Pharmacy, Baltimore, USA
5Analytical Chemistry Department,Faculty of Pharmacy, University of Sadat City, Egypt.
Abstract
Objectives: An ultra-performance liquid chromatography tandem mass spectrometry (UPLC–MS/MS) assay has been developed and validated for the quantification of oxycodone in rat serum and brain tissue homogenates. Methods: A simple extraction method using methyl-t-butyl ether was used for sample extraction with oxycodone–D3 as an internal standard (IS). A Symmetry® C18 column (100 mm x 4.6 mm, 5 µm) connected to a Phenomenex Luna® guard column (4 x 3 mm, 5 µm) was used for chromatographic separation. The mobile phase was composed of a mixture of acetonitrile and 0.1 % formic acid in water (pH = 2.7) (15:85, v/v). The flow rate was 0.4 mL/min, the total run time was 5 min, and the injection volume was 10 µL. The column and autosampler temperatures were maintained at 60 °C and 25 °C, respectively. Results: The calibration curve for oxycodone was linear over the range of 10–2000 ng/mL. Oxycodone extraction recovery from rat serum and brain samples ranged from 90.78–105.85 % and 98.42–104.38 % with relative standard deviation (RSD) values of 0.94–3.87 % and 1.04–2.82 %, respectively. The inter-day accuracy values ranged from 87.67–104.83 %, while the intra-day accuracy values ranged from 86.95–105.67 %. Conclusion: This method can be used for the quantification of oxycodone in samples obtained from preclinical animal studies and has great promise for applications in the quantification of oxycodone in human biological matrices.
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