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UHPLC-MS/MS determination of oleandrin in blood and tissues of dairy cattle poisoned by oleander (Nerium oleander)

Abstract

The accidental ingestion of leaves or cut branches of oleander (Nerium oleander) often results in severe poisoning in cattle. This natural shrub contains oleandrin, a highly toxic cardiac glycoside, which may prove fatal even at very low amounts. For this reason, a highly sensitive ultra-high performance liquid chromatography-tandem mass spectrometry method was developed and validated for in-vivo oleandrin determination in bovine blood and serum samples or in bovine liver and heart for post-mortem diagnosis. The method was highly selective as the mass spectrometer worked in selected reaction monitoring mode using the first five most intense m/z transitions of the oleandrin. The limits of detection and quantitation were 0.11 and 0.36 ng mL-1, respectively, whereas the method detection and quantitation limit values ranged 0.006-0.051 ng g-1 and 0.018-0.154 ng g-1, respectively. The chromatographic run was only 5 min and the time employed for the sample pretreatment (25-30 min) is useful to avoid the presence of matrix effect. All the recovery values were within 62.9-80.5%. The method was successfully used to incurred samples from an accidentally poisoned cow and is expected to be applicable to forensic purposes.

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Publication details

The article was received on 20 Aug 2019, accepted on 23 Sep 2019 and first published on 01 Oct 2019


Article type: Paper
DOI: 10.1039/C9AY01800J
Anal. Methods, 2019, Accepted Manuscript

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    UHPLC-MS/MS determination of oleandrin in blood and tissues of dairy cattle poisoned by oleander (Nerium oleander)

    F. Gosetti, C. Nebbia, L. Ceci, G. Carelli and E. Marengo, Anal. Methods, 2019, Accepted Manuscript , DOI: 10.1039/C9AY01800J

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