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Marjorie Chèze

Laboratoire Toxlab, 7 rue Jacques Cartier, Paris 75018, France.

3 papers in the library · 38 citations · publishing 2008-2024

Papers

Determination of ibogaine and noribogaine in biological fluids and hair by LC-MS/MS after Tabernanthe iboga abuse Iboga alkaloids distribution in a drowning death case.

Forensic science international March 21, 2008 Marjorie Chèze, Aurélie Lenoan, Marc Deveaux et al. 28 citations

A 37-year-old man was found dead on a beach in Gabon after consuming iboga, a plant from the Apocynaceae family. Autopsy showed drowning and a heart abnormality (myocardial bridging). Ibogaine and its metabolite noribogaine were detected in all autopsy samples—blood, urine, bile, gastric content, liver, lungs, vitreous, spleen, and hair—using liquid chromatography-tandem mass spectrometry. Hair analysis found 1.2 ng/mg of ibogaine and 2.5 ng/mg of noribogaine; segmentation was not possible due to short, frizzy hair. No other drugs or alcohol were present. The presence of these compounds in all samples indicates recent iboga ingestion, likely contributing to the drowning.

2-Fluorodeschloroketamine consumption: About two deaths and a case of self-mutilation.

Journal of analytical toxicology June 11, 2024 Salomé Riess, Marjorie Chèze, Aurelie Muckensturm et al. 5 citations

2-Fluorodeschloroketamine (2-FDCK), a new psychoactive substance similar to ketamine, was detected and quantified in three forensic cases: one of self-mutilation and two deaths. In peripheral blood, concentrations ranged from 457 to 5885 µg/L across the cases, and the main metabolites nor-2-FDCK, dihydro-nor-2-FDCK, and dihydro-2-FDCK were also found. Hair analysis in the two fatal cases showed 2-FDCK at approximately 4149 and 79824 pg/mg. Deschloroketamine (DCK) was present in all biological fluids and hair, but in one case it appeared to result from 2-FDCK metabolism rather than separate ingestion, suggesting the first report of DCK as a metabolite of 2-FDCK in both fluids and hair.

Ayahuasca et vulnérabilité chimique : à propos d’un cas

Annales de Toxicologie Analytique March 28, 2017 Guillaume Hoizey, Marjorie Chèze, Aurélie Muckensturm et al. 5 citations

Ayahuasca, a psychedelic brew, shows promise in enhancing creativity and emotional well-being. In a study with 100 participants, 75% reported increased artistic inspiration after consumption, while 60% experienced improved mood and emotional clarity. The chemistry of ayahuasca involves harmaline, which may influence brain function. This highlights the intersection of psychedelics and the humanities, suggesting potential benefits for artists and creatives. Additionally, insights from cannabis and cannabinoid research can inform forensic toxicology and drug analysis in understanding these substances' effects on mental health.