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  • 1
    ISSN: 1434-5196
    Keywords: Key words Agonale aspiration ; Coagulation ; necrosis ; Concentration distribution after intoxication ; Propoxur ; Tetramethrine ; Schlüsselwörter Agonale Aspiration ; Koagulationsnekrose ; Konzentrationsverteilung ; nach Intoxikation ; Propoxur ; Tetramethrin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Description / Table of Contents: Zusammenfassung Die Untersuchung eines Todesfalls nach oraler Aufnahme einer größeren Menge eines Kombinationsinsektizids bestehend aus Propoxur und Tetramethrin sowie den Lösungsmitteln Isopropanol und Benzylalkohol ergab als wesentlichen morphologischen Befund eine koagulationsnekrotische Verhärtung der Speiseröhre und der Magenwand. Die in Venenblut, Leber, Niere, Glaskörperflüssigkeit und Liquor durch HPLC bzw. GC/MS bestimmten Konzentrationen lagen für Propoxur (〈 0,3– 18 μg/g) im komatös-lateralen Bereich, während Tetramethrin (bis 0,1 μg/g) nahezu vollständig abgebaut war. Weiterhin wurden als Propoxurabbauprodukt o-Isopropoxyphenol (2,8–56 μg/g), Benzylalkohol (18–58 μg/g) sowie dessen Abbauprodukt Benzoesäure (85–140 μg/g), Isopropanol (0,45–1,1 mg/g) und Aceton (0,01–0,03 mg/g) gefunden. Die Werte im Herzblut und in der Lunge waren hingegen bis zu 30-fach höher. Als Ursache für diese immensen Konzentrationsunterschiede wird eine agonale Aspiration des erbrochenen, bis zu drei Größenordnungen höher konzentrierten Mageninhaltes diskutiert. Der hauptsächlich postmortal angenommene Abbau von Propoxur zu o-Isopropoxyphenol und von Benzylalkohol zu Benzoesäure ist in der Leber nahezu vollständing und in den übrigen Probenmaterialien sehr unterschiedlich ausgeprägt. Als Todesursache ergibt sich eine Intoxikation durch den Acetylcholinesterasehemmer Propoxur in Kombination mit der neurotoxischen Wirkung des Tetramethrins.
    Notes: Abstract In a fatality after oral intake of a large amount of an insecticide spray consisting of propoxur, tetramethrine and the solvents isopropanol and benzyl alcohol, a coagulation nectrotic fixation of the oesophagus and stomach were the main morphological findings. The concentrations determined by HPLC and GC/MS in femoral blood, liver, kidney, vitreous humor and liquor were in the comatose lethal range for propoxur (〈 0.3–18 μg/g), whereas tetrametrin (up to 0.1 μg/g) was almost completely decomposed. The propoxur decomposition product o-isopropoxyphenol (2.8–56 μg/g), benzyl alcohol (18–58 μg/g) and its oxydation product benzoic acid (85–140 μg/g), isopropanol (0.45–1.1 mg/g) and acetone (0.01–0.03 mg/g) were also found. On the other hand, the concentrations in heart blood and lung tissue were up to 30 times higher. As a reason for these immense concentration differences an agonale aspiration of the highly concentrated liquid stomach content after vomiting immediately before death is discussed. The extent of the metabolization of propoxur to o-isopropoxyphenol and of benzyl alcohol to benzoic acid, which is assumed to proceed mainly postmortem, was quite different in the materials investigated and was almost complete in the liver. The intoxication by the acetylcholine esterase inhibitor propoxur in combination with the neurotoxic effect of tetramethrine was determined as the cause of death.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 110 (1979), S. 831-840 
    ISSN: 1434-4475
    Keywords: Cr(III)complexes, reduction ; Cyclic voltammetry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die elektrochemischen Daten einer Reihe von Cr(III)-Komplexen miten-, ur-, DMSO-, dien- undacac-Liganden werden präsentiert und einige Möglichkeiten der Korrelation der physikalischen Eigenschaften der Komplexe werden aufgezeigt. Die erste Stufe bei der Einführung vonacac-Liganden ist auf Grund einer π-Wechselwirkung zwischen Ligand und Zentralion irreversibel.
    Notes: Abstract The compounds investigated were: [Cr(en)3]3+, [Cr(ur)6]3+, [Cr(DMSO)6]3+, [Cr(dien)2]3+, [Cr(en)2(acac)]2+, [Cr(en) (acac)2]+ and Cr(acac)3. A distinctly different behaviour is caused by the introduction of one or moreacac ligands into the molecule. The first step is much more cathodic and quite irreversible, while it is reversible or quasi reversible for the first group of ions. This is due to a π-type interaction between theacac ligand and the central ion. This interaction is responsible for a third peak occurring for the second group of compounds and may be attributed to the reduction of the Cr(I) ion. Some correlations were found e.g. between the extinction of thed-d band of the first group of ions and the potential of the first peak, and the number ofacac groups introduced in the second group of compounds and the shift of the potential of the first peak. The determined electrochemical data are tabulated.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    International journal of legal medicine 111 (1998), S. 91-92 
    ISSN: 1437-1596
    Keywords: Key words Suicidal injection ; Methemoglobin ; Nitrobenzene ; Hemodialysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Notes: Abstract We describe the case of a 33-year-old man who injected 4 ml of India ink into one of the median cubital veins with suicidal intent. He was hospitalized in good general condition 10 h after the injection. Abnormal laboratory test results were a leukocytosis, an oximetrically determined methemoglobin level of 36.9% (normal range: 1.5%) and a free hemoglobin level of 74 μmol/L (normal range: 〈 25 μmol/L). Toxicological examination showed the presence of nitrobenzene in blood and urine. Intravenous administration of vitamin C and tolonium chloride plus forced diuresis led to an improvement in cyanosis and a fall in the methemoglobin concentration. Repeated increase in the concentration of aminobenzene were successfully treated by hemodialysis with a high-flux dialyzer.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 109 (1978), S. 1287-1294 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Bei der Reduktion einiger der folgenden Cr(III)-Komplexe inDMSO läßt sich auf Grund der Voltammogramme auf eine Ligandenabspaltung und Bildung der vierfach koordinierten Cr(II)-Komplexe schließen: [Cr(en)3]3+, [Cr(acac)(en)2]2+, [Cr(acac)3], [Cr(dien)2]3+, [Cr(DMSO)6]3+, [Cr(ur)6]3+. Für das [Cr(en)3]3+ konnten Geschwindigkeitskonstante und Aktivierungsenergie dieser nachgelagerten Reaktion bestimmt werden. Der Einfluß der Struktur des Komplexes auf die Zerfallsgeschwindigkeit wird diskutiert.
    Notes: Abstract From cyclic linear sweep voltammograms of some Cr(III) complexes it is evident that after electron transfer ligand groups are expelled relatively slowly inDMSO and the tetra coordinated complex is formed. The rate constants could be determined in some cases by the methods of cyclic voltammetry. The following compounds were examined: [Cr(en)3]3+, [Cr(acac)(en)2]2+, [Cr(acac)3]. [Cr(dien)2]3+, [Cr(DMSO)6]3+, [Cr(ur)6]3+. For [Cr(en)3]3+ the energy of activation could be determined as well. The dependence of the velocity of ligand elimination on complex structure is discussed.
    Type of Medium: Electronic Resource
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