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The effects of inorganic and organic nitrogen supply on the growth and domoic acid (DA) production of Pseudo-nitzschia cf. seriata and Pseudo-nitzschia calliantha from Bizerte Lagoon (SW Mediterranean Sea) were studied during field and laboratory experiments. Nitrogen enrichments (40 µM NO3−; 10 µM NH4+; 20 µM CH4N2O) and a control, with no added N, were carried out in separate...
Domoic acid (DA) is the principal neurotoxin responsible for amnesic shellfish poisoning (ASP) and is produced, among other species, by marine diatoms of the genus Pseudo-nitzschia. In this work, a method for the determination of dissolved DA and its isomers present in seawater has been developed, based on a solid-phase extraction (SPE) disks followed by rapid resolution liquid chromatography coupled...
The suitability and sensitivity of two neural cell models, NG108-15 and Neuro-2a, to different marine toxins were evaluated under different incubation and exposure times and in the presence or absence of ouabain and veratridine (O/V).NG108-15 cells were more sensitive to pectenotoxin-2 than Neuro-2a cells. For saxitoxin, brevetoxin-3, palytoxin, okadaic acid and dinophysistoxin-1 both cell types proved...
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