Page 117 - Advances in Forensic Applications of Mass Spectrometry - Jehuda Yinon
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                                    oleandrigenin, and others. Preparations of oleander are used for cancer treat-
                                    ment. Oleandrin, odoroside, neritaloside, and the aglycone oleandrigenin,
                                    present in the extract of  Nerium oleander (Anvirzel), were analyzed with
                                    qTOF/MS. CID mass spectra were obtained with mass accuracy greater than
                                    5 ppm. LOD for oleandrin was 20 pg injected. The method was applied for
                                    the determination of oleander glycosides in human plasma after intramus-
                                                           173
                                    cular injection of Anvirzel.  A 45-year-old female took Nerium oleander for
                                    suicidal purposes, showing nausea, vomiting, cardiovascular shock, and sinus
                                    bradycardia. Oleandrin was measured in plasma at 1.1  mg/l and was also
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                                    identified in urine using ESI/LC/MS.  Arao et al.  applied SSI/LC/MS/MS
                                    (ion trap) for determination of oleandrin, oleandrigenin, and desacetylole-
                                    andrin in the heart, blood, and cerebrospinal fluid in the case  of a fatal
                                    suicidal poisoning of a 49-year-old woman who learned about oleander
                                    toxicity on TV. Only oleandrin was found in concentrations of 9.8 and 10.1
                                    mg/l in her heart, blood, and cerebrospinal fluid, respectively.
                                       Capsaicinoids — capsaicin, dihydrocapsaicin, and nonivamide — occur
                                    naturally in red pepper (Capsicum annuum). Due to its extremely irritative
                                    properties, pepper spray is used in self-defense weapons, which are also
                                    applied in criminal acts. Reilly et al. developed a LC/ESI/MS/MS procedure
                                    for the determination of capsaicin, dihydrocapsaicin, and nonivamide in self-
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                                    defense weapons  and in blood and tissue of experimental animals.  The
                                    LOQ in the latter procedure was 1 mg/l.
                                       Ricin is a toxic protein (mol. wt. over 60,000 Da) present in the seeds of
                                    castor beans (Ricinus communis L). This compound has a history of murder-
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                                    ous application and appeared in terrorist handbooks. Darby et al.  analyzed
                                    ricin and its marker ricinine in acetone extract of castor bean and in trypsin
                                    hydrolysates. LC/UV, ESI/LC/MS, and MALDI/TOF/MS were applied. The
                                    last technique gave the best results, both for intact ricin molecule and for
                                    digested peptide fragments.
                                       Colchicine, an alkaloid present in flowers of the autumn crocus (Colchi-
                                    cum autumnale) has been used for centuries for the treatment of gout. Due
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                                    to its toxicity, several fatal cases were reported.  Tracqui et al.  extracted
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                                    colchicine from blood, plasma, or urine with dichlormethane at pH 8 and
                                    determined with LC/ESI/MS in full scan and SIM mode. The LOD in SIM
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                                    mode was 0.6  mg/l. Jones et al.  detected colchicine in the biofluids and
                                    organs of a 73-year-old man who died 18 h after receiving a 1 mg intravenous
                                    dose of colchicine. He was treated with oral colchicine in previous days.
                                    Dichloromethane extraction, followed by LC/ESI/MS, was applied. The con-
                                    centrations found were 50 mg/l in cardiac blood, 575 mg/l in liver, and 12,000
                                    mg/l in bile.
                                       Maurer et al.  determined a- and b-amanitine in the urine of patients
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                                    intoxicated with Amanita mushrooms. The toxins were isolated with immu-


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