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A novel approach for therapeutic drug monitoring of valproic acid using FT-IR spectroscopy and nonlinear support vector regression

journal contribution
posted on 2024-05-16, 02:44 authored by A El Orche, A Cheikh, Joel JohnsonJoel Johnson, O Elhamdaoui, S Jawhari, FM El Abbes, Y Cherrah, M Mbarki, M Bouatia
BACKGROUND: Recent technological progress has bolstered efforts to bring personalized medicine from theory into clinical practice. However, progress in areas such as therapeutic drug monitoring (TDM) has remained somewhat stagnant. In drugs with well-known dose-response relationships, TDM can enhance patient outcomes and reduce health care costs. Traditional monitoring methods such as chromatography-based or immunoassay techniques are limited by their higher costs and slow turnaround times, making them unsuitable for real-time or onsite analysis. OBJECTIVE: In this work, we propose the use of a fast, direct, and simple approach using Fourier transform infrared spectroscopy (FT-IR) combined with chemometric techniques for the therapeutic monitoring of valproic acid (VPA). METHOD: In this context, a database of FT-IR spectra was constructed from human plasma samples containing various concentrations of VPA; these samples were characterized by the reference method (immunoassay technique) to determine the VPA contents. The FT-IR spectra were processed by two chemometric regression methods: partial least-squares regression (PLS) and support vector regression (SVR). RESULTS: The results provide good evidence for the effectiveness of the combination of FT-IR spectroscopy and SVR modeling for estimating VPA in human plasma. SVR models showed better predictive abilities than PLS models in terms of root-mean-square error of calibration and prediction RMSEC, RMSEP, R2Cal, R2Pred, and residual predictive deviation (RPD). CONCLUSIONS: This analytical tool offers potential for real-time TDM in the clinical setting. HIGHLIGHTS: FTIR spectroscopy was evaluated for the first time to predict VPA in human plasma for TDM. Two regressions were evaluated to predict VPA in human plasma, and the best-performing model was obtained using nonlinear SVR.

History

Volume

106

Issue

4

Start Page

1070

End Page

1076

Number of Pages

7

eISSN

1944-7922

ISSN

1060-3271

Publisher

AOAC International

Language

en

Peer Reviewed

  • Yes

Open Access

  • No

Acceptance Date

2022-11-06

Era Eligible

  • Yes

Medium

Print

Journal

Journal of AOAC International