PMID: 16619853Apr 20, 2006Paper

Accumulation of paralytic shellfish poison (PSP) and biotransformation of its components in oysters, Crassostrea gigas, fed with the toxic dinoflagellate Alexandrium tamarense

Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan
Manabu AsakawaKeisuke Miyazawa

Abstract

As a part of our studies on the mechanism of uptake of paralytic shellfish poison (PSP) and the kinetics of its accumulation in bivalves, oysters Crassostrea gigas were experimentally contaminated with PSP by being fed with the toxic dinoflagellate Alexandrium tamarense for 2, 4, 6, 8 and 10 days. Temporal variations in the PSP contents and their profiles in oysters during the feeding experiment were monitored by high-performance liquid chromatography (HPLC) and the toxin profile of the oysters was compared with that of A. tamarense. Toxins excreted from the infested oysters into the seawater for 2 and 10 days were recovered and analyzed by HPLC. PSP toxicity rapidly appeared in the tissues of oysters and their toxicity levels reached 0.6 (0.3), 2.2 (1.1), 1.0 (0.5), 3.4 (1.6) and 1.1 (0.5) MU/g (nmol/g) shucked meat at 2, 4, 6, 8 and 10 days, respectively. The accumulation rates of toxin, calculated from the total amount (nmol) of toxins expressed by the total cell number fed during the exposure period and the toxicity of the oysters, were 14.1, 18.7, 5.1, 14.9 and 3.2% for 2, 4, 6, 8 and 10 days. During feeding experiments, the toxin profile of oysters changed substantially, showing marked differences from the proportions fou...Continue Reading

References

Jul 29, 1983·Biochemical and Biophysical Research Communications·J J SullivanJ Liston
Oct 27, 2004·Toxicon : Official Journal of the International Society on Toxinology·Hsi-Pin LinYasukatsu Oshima
Jan 31, 2006·Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan·Manabu AsakawaKeisuke Miyazawa

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Citations

Mar 21, 2007·Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan·Mohamad SamsurOsamu Arakawa
Jul 23, 2011·Toxicon : Official Journal of the International Society on Toxinology·I ParedesA G Cabado
Oct 6, 2015·Toxicon : Official Journal of the International Society on Toxinology·D P RubioA E Vasquez
Jun 11, 2011·Marine Environmental Research·Zhao-Hui WangDa-Zhi Wang
Mar 17, 2021·Toxicon : Official Journal of the International Society on Toxinology·Jésica TobkeJorge M Navarro
Jul 30, 2021·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·Tadashi NakataniTetsuo Yamano

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