Simultaneous separation of naproxen and 6-O-desmethylnaproxen metabolite in saliva samples by liquid chromatography-tandem mass spectrometry: Pharmacokinetic study of naproxen alone and associated with esomeprazol-Results

Author(s)

Oliveira, Gabriela Moraes ; Dionisio, Thiago Jose ; Del Hierro Polanco, Nelson Leonel ; Siqueira-Sandrin, Viviane Silva ; Cardoso Faria, Flavio Augusto ; Santos, Carlos Ferreira ; Calvo, Adriana Maria

• Document type: Journal article
• Source: PLoS One; v. 17, n. 12, p. 11-pg., 2022-12-01.

Abstract

After performing liquid-liquid extraction with ethyl acetate and HCl, samples from 12 volunteers who performed sequential collections after taking a tablet of naproxen alone (n = 6) or associated with esomeprazole (n = 6) were analyzed in a triple quadrupole mass spectrometer 8040 LC MS/MS Shimadzu. Separation of naproxen and its main metabolite 6-O-desmethylnaproxen was performed in a Shim-Pack XR-ODS 75Lx2.0 column and C18 pre-column at 40 degrees C using a mixture of methanol and ammonium acetate 10 mM (70:30, v/v) with an injection rate of 0.3 ml/min. The total analytical run time for each sample was 5 min. The association of naproxen with esomeprazole take considerably longer time to reach the maximum concentration [T-max 0.17 h (interquartile range, 0.13-1.95) for naproxen alone and 13.18*h (interquartile range, 10.12-27.15) for naproxen with esomeprazole, p = 0.002], also to be eliminated [T-1/2 0.12 h (interquartile range, 0.09-1.35) for naproxen alone and 9.16*h (interquartile range, 7.16-41.40) for naproxen with esomeprazole, p = 0.002] and lower maximum concentrations (C-max 4.6 +/- 2.5 ug/mL for naproxen alone and 2.04 +/- 0.78* mu g/mL, p = 0.038). The association of naproxen with esomeprazole showed increased values of AUC(0-t) [82.06* h*mu g/mL (interquartile range, 51.90-157.00) with esomeprazole and 2.97 h*mu g/mL (interquartile range, 1.82-7.84) naproxen alone, p = 0.002] in drug concentrations in relation to the naproxen tablet alone, probably, such differences are due to the delay in the absorption of naproxen when it is associated with the drug proton pump inhibitor, esomeprazole. As well as reduced values of full clearance when naproxen is combined with esomeprazole (0.07* mu g/h (interquartile range, 0.005-0.01) with esomeprazole and 7.29 mu g/h (interquartile range, 3.17-16.23) in naproxen alone, p = 0.002). Both naproxen and 6-O-desmethylnaproxen in saliva samples can be effectively quantified using LC-MS/MS, this methodology proved to be rapid, sensitive, accurate and selective for each drug and allows for the analysis of their pharmacokinetic parameters, in both situations. (AU)

• FAPESP's process: 20/04730-7 - Analysis of different drug extraction methods in saliva samples for LC MS / MS assays
• Grantee: Viviane da Silva Siqueira Sandrin
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 20/04734-2 - Pharmacokinetics of naproxen, celecoxib and meloxicam and the validation of the extraction methodology in saliva samples by LC MS/MS
• Grantee: Nelson Leonel Del Hierro Polanco
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 17/12725-0 - Model of pharmakinetics/pharmacodynamics (PK/PD) on the influence of P450 genetic polymorphism (CYP2C9) of non-steroidal anti-inflammatory drugs and main metabolics from saliva samples through LCMS/MS and its role on prescription personalization
• Grantee: Adriana Maria Calvo
• Support Opportunities: Research Grants - Young Investigators Grants