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The Genoa 2005 outbreak. Determination of putative palytoxin in Mediterranean Ostreopsis ovata by a new liquid chromatography tandem mass spectrometry method.
TLDR
It is suggested that putative palytoxin was the causative agent responsible for patients' symptoms and demonstrated for the first time the presence of such a toxin in Italian waters. Expand
Putative palytoxin and its new analogue, ovatoxin-a, in Ostreopsis ovata collected along the ligurian coasts during the 2006 toxic outbreak
TLDR
This article reports on the liquid chromatography tandem mass spectrometry investigation of plankton samples collected in the summer of 2006 along the Ligurian coasts, coinciding with a massive bloom of the tropical microalga Ostreopsis ovata, and identifies a new palytoxin-like compound never reported so far, which is named ovatoxin-a. Expand
Comparative growth and toxin profile of cultured Ostreopsis ovata from the Tyrrhenian and Adriatic Seas.
TLDR
Two strains of O. ovata collected in 2006 along the Adriatic and Tyrrhenian coastlines and grown in culture were studied to characterize their growth and toxin profile, suggesting that a long lasting bloom could enhance the toxin content in the water and cause toxic effects in people inhaling the aerosol. Expand
Complex palytoxin-like profile of Ostreopsis ovata. Identification of four new ovatoxins by high-resolution liquid chromatography/mass spectrometry.
TLDR
A quantitative study of the O. ovata culture extract indicated that the whole of the new ovatoxins represents about 46% of the total toxin content and, thus, their presence has to be taken into account when LC/MS-based monitoring programs of either plankton or contaminated seafood are carried out. Expand
Yessotoxin in mussels of the northern Adriatic Sea.
TLDR
The major toxins were shown to be yessotoxin, identified by its chromatographic properties and spectral data, and okadaic acid, detected both by fluorometric high-performance liquid chromatography and by comparison of its spectral properties with those of an authentic sample. Expand
Toxin profile of Alexandrium ostenfeldii (Dinophyceae) from the Northern Adriatic Sea revealed by liquid chromatography-mass spectrometry.
TLDR
This paper reports on the first occurrence of fairly high numbers of Alexandrium ostenfeldii along the Emilia Romagna coasts (Italy) and reveals that the Adriatic A. ostenfieldii produces mainly spirolide 13-desmethyl C at levels of 3.7 pg/cell but not PSP toxins. Expand
Influence of temperature and salinity on Ostreopsis cf. ovata growth and evaluation of toxin content through HR LC-MS and biological assays.
TLDR
Considering the increasing need for rapid and sensitive methods to detect palytoxin in natural samples, the haemolytic assay appears a useful method for preliminary quantification of the whole of palyToxin-like compounds in algal extracts. Expand
Nitrogen and phosphorus limitation effects on cell growth, biovolume, and toxin production in Ostreopsis cf. ovata
TLDR
Effects of nitrogen (N) and phosphorous (P) limited conditions on cell growth, cell size, biovolume, and toxin production of an O. ovata strain isolated from the Adriatic Sea is reported. Expand
Complex yessotoxins profile in Protoceratium reticulatum from north-western Adriatic sea revealed by LC-MS analysis.
TLDR
YTX and its analogues have been determined by high performance liquid chromatography coupled with electrospray ion trap mass spectrometry and this result is the first to confirm production of these YTX analogues from this species and indicate it as a producing organism of homoYTX, 45-OHyTX, carboxyY TX, and noroxoY TX found in shellfish. Expand
Isolation and structure elucidation of ovatoxin-a, the major toxin produced by Ostreopsis ovata.
TLDR
The present paper reports on the isolation, NMR-based structural determination, and preliminary mouse lethality evaluation of ovatoxin-a, the major toxic compound contained in O. cf. Expand
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