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Journal article

POISONINGS FROM FLESH OF THE GREENLAND SHARK SOMNIOSUS MICROCEPHALUS MAY BE DUE TO TRIMETHYLAMINE

In Toxicon — 1991, Volume 29, Issue 10, pp. 1205-1212

By Anthoni, Uffe1; Christophersen, Carsten1; Gram, Lone2,3,4; Nielsen, Niels H.1; Nielsen, Per1

From

University of Copenhagen1

Section for Microbial and Chemical Ecology, Department of Biotechnology and Biomedicine, Technical University of Denmark2

Bacterial Ecophysiology and Biotechnology, Section for Microbial and Chemical Ecology, Department of Biotechnology and Biomedicine, Technical University of Denmark3

Department of Biotechnology and Biomedicine, Technical University of Denmark4

Poisonings from flesh of the Greenland shark Somniosus microcephalus may be due to trimethylamine. Toxicon 29 , 1205-1212, 1991 .-The flesh of the Greenland shark, Somniosus microcephalus, especially in fresh condition, is toxic to both dog and man. Analysis of the toxic fractions indicates the presence of large amounts of trimethylamine oxide (TMAO) but no other substances that could be directly responsible for the poisoning.

The symptoms appear to be due to an acute trimethylamine (TMA) poisoning arising from intestinal reduction of TMAO to TMA. TMA stimulates contraction of the guinea-pig ileum (antagonized by atropine but not hexamethonium). Low concentrations of TMA increase contraction of the rat phrenic nerve-diaphragm preparation, whereas higher concentrations cause blockade

Language: English
Year: 1991
Pages: 1205-1212
ISSN: 00410101 , 01905368 and 18793150
Types: Journal article
DOI: 10.1016/0041-0101(91)90193-u
ORCIDs: Gram, Lone
Keywords

Animals Cooking Diaphragm Freezing Guinea Pigs Ileum In Vitro Techniques Magnetic Resonance Spectroscopy Meat Methylamines Muscle Contraction Muscle, Smooth Neuromuscular Depolarizing Agents Rats Sharks trimethylamine trimethyloxamine

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