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Monitoring of okadaic acid (OA)-group toxins in seafood is of paramount importance for the protection of consumer health from diarrheic shellfish poisoning. The property of OA-group compounds to inhibit type 2A serine/threonine phosphoprotein phosphatase (PP2A) has been exploited for the detection of OA in several experimental settings, but the performance of PP2A inhibition assays in the quantification...
We originally developed a functional assay for the detection of yessotoxins (YTX) based on its capacity to induce dose-dependent changes in cellular levels of two marker proteins, consisting of E-cadherin and an E-cadherin fragment (ECRA 100 ) in epithelial cells. The procedure is time-consuming and we have shortened it by a slot blot format, using antibodies recognizing two different epitopes...
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