Development of conditions for analytical diagnosis of poisoning with clopidogrel

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Abstract

Introduction. Clopidogrel bisulfate (Clopidogrel) is one of the main drugs for the treatment of various cardiovascular diseases (acute coronary syndrome, ischemic stroke, transient ischemic attack, peripheral artery disease, etc.). Especially, this drug is very relevant in the treatment of COVID-19. Clopidogrel has repeatedly been the cause of lethal poisoning, and cases of clopidogrel being used for suicide are very common in China. According to the studied literature data, the analysis of this drug in the biological material is not presented. Objective: The aim of the research was to establish the distinctive ability of conventional methods of isolating medicinal substances from biological material in relation to clopidogrel in chemical and toxicological analysis (CTA). Material and methods. The study was carried out with model samples of pig liver that had not undergone putrefactive changes, which contained the studied drug. Detection and quantification of clopidogrel in extracts were carried out using thin-layer chromatography (TLC) and UV spectrophotometry. Results. The isolation efficiency of clopidogrel according to the method of A.A. Vasilyeva was 57.75±5.08%, according to the method of V.P. Kramarenko - 64.23±5.44%. When using the isolation method of A.A. Vasilyeva, the detection limit of clopidogrel was 1.04%, according to the method of V.P. Kramarenko - 1.09%. The limit of quantitative determination of clopidogrel according to the method of A.A. Vasilyeva is 3.31%, according to the method of V.P. Kramarenko - 3.34%, respectively. Conclusion. For analytical diagnostics in case of clopidogrel poisoning, TLC screening and UV spectrophotometric determination must be carried out with preliminary TLC purification. Isolation of clopidogrel with water acidified with ethyl alcohol (the Stas-Otto method) does not work. The effectiveness of isolating the drug by the method of V.P. Kramarenko is 64.23±5.44%. The greatest selectivity of the UV spectrophotometric method for determining clopidogrel in biological material in relation to matrix components was provided by the method of isolation with water acidified with sulfuric acid (V.P. Kramarenko's method).

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Lyudmila Sergeevna Anosova

Donetsk National Medi

Author for correspondence.
Email: apteka-nanya@yandex.ru
Candidate of Pharmaceutical Sciences, Assistant of the Department of Pharmaceutical and Medical Chemistry

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2. Fig. 1. UV light absorption spectrum clopidogrel (in 0.1 M solution of hydrochloric acid), isolated from the liver by the method A.A. Vasilyeva

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3. Fig. 2. UV light absorption spectrum clopidogrel (in 0.1 M solution of hydrochloric acid), isolated from the liver by the method V.Р. Кrаmаrеnко

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