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Fatal poisoning by ingestion of a self-prepared oleander leaf infusion
Anna Carfora1, Raffaella Petrella2, Renata Borriello2
1Department of Experimental Medicine, Forensic Toxicology Unit, University of Campania "L. Vanvitelli", Via L. Armanni, 5, 80138, Napoli, Italy. anna.carfora@unicampania.it.
Abstract:
An unusual case of poisoning by the ingestion of oleander leaves is reported. A 71 year old male laboratory technician committed suicide at home in this unusual manner. At the death scene a steel pan and other paraphernalia, used for the extraction of oleandrin and other cardiac glycosides from the leaves of the Nerium oleander plant were found.Toxicological investigations for oleandrin, oleandrigenin, neritaloside, and odoroside were performed by LC-MS/MS on all biological samples (peripheral blood, vitreous humor, urine, liver, gastric contents) and on the yellow infusion found at the death scene.In all samples, toxic levels of oleandrin were detected (blood 37.5 ng/mL, vitreous humor 12.6 ng/mL, urine 83.8 ng/mL, liver 205 ng/mg, gastric content 31.2 µg/mL, infusion 38.5 µg/mL). Qualitative results for oleandrigenin, neritaloside, and odoroside were obtained. Oleandrigenin was present in all tissue samples whereas neritaloside and odoroside were absent in the blood and vitreous humor but present in urine, liver, gastric content, and in the leaf brew.The purpose of this study was the identification of oleandrin and its congener oleandrigenin, detected in the vitreous humor. The blood/vitreous humor ratio was also calculated in order to assess of the likely time interval from ingestion to death. According to the toxicological results death was attributed to fatal arrhythmia due to oleander intoxication. The manner of death was classified as suicide through the ingestion of the infusion.
Insights
This case report details a fatal oleander leaf poisoning. Toxicological analysis confirmed lethal levels of oleandrin, leading to cardiac arrhythmia and death, classified as suicide.
Area of Science:
- Forensic Toxicology
- Plant Poisoning
- Cardiology
Background:
- Oleander (Nerium oleander) contains potent cardiac glycosides.
- Ingestion can lead to severe cardiac arrhythmias and death.
- Extraction of active compounds for intentional poisoning is uncommon.
Observation:
- A 71-year-old man died by suicide via ingestion of an oleander leaf infusion.
- Paraphernalia for extracting oleandrin and other cardiac glycosides were found at the scene.
- Toxic levels of oleandrin were detected in multiple biological samples and the infusion.
Findings:
- LC-MS/MS confirmed toxic concentrations of oleandrin in blood, vitreous humor, urine, liver, and gastric contents.
- Oleandrigenin was present in tissue samples; neritaloside and odoroside were found in specific samples.
- The blood/vitreous humor ratio was calculated to estimate the time of death.
Implications:
- This case highlights the potential lethality of self-extracted oleander compounds.
- Accurate toxicological analysis is crucial for determining cause and manner of death in plant poisoning cases.
- Understanding glycoside distribution in biological samples aids in post-mortem investigations.
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