FN Archimer Export Format PT J TI Liquid Chromatography Coupled to High-Resolution Mass Spectrometry for the Confirmation of Caribbean Ciguatoxin-1 as the Main Toxin Responsible for Ciguatera Poisoning Caused by Fish from European Atlantic Coasts BT AF Estevez, Pablo Sibat, Manoella Leão-Martins, José Manuel Reis Costa, Pedro Gago-Martínez, Ana Hess, Philipp AS 1:1;2:2;3:1;4:3;5:1;6:2; FF 1:;2:PDG-ODE-DYNECO-PHYC;3:;4:;5:;6:PDG-ODE-DYNECO-PHYC; C1 Biomedical Research Center (CINBIO), Department of Analytical and Food Chemistry, University of Vigo, Campus Universitario de Vigo, 36310 Vigo, Spain Ifremer, DYNECO, Laboratoire Phycotoxines, Rue de l’Île d’Yeu, 44311 Nantes, France IPMA—Portuguese Institute of the Sea and Atmosphere, Av. Brasília, 1449-006 Lisbon, Portugal C2 CINBIO, SPAIN IFREMER, FRANCE IPMA, PORTUGAL SI NANTES SE PDG-ODE-DYNECO-PHYC IN WOS Ifremer UPR DOAJ copubli-europe IF 2.13 TC 23 UR https://archimer.ifremer.fr/doc/00624/73630/73067.pdf https://archimer.ifremer.fr/doc/00624/73630/73068.pdf LA English DT Article DE ;ciguatoxins;HRMS;Q-TOF;ciguatera poisoning;C-CTX1;fragmentation pathways AB Ciguatera poisoning (CP) is a common seafood intoxication mainly caused by the consumption of fish contaminated by ciguatoxins. Recent studies showed that Caribbean ciguatoxin-1 (C-CTX1) is the main toxin causing CP through fish caught in the Northeast Atlantic, e.g., Canary Islands (Spain) and Madeira (Portugal). The use of liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) combined with neuroblastoma cell assay (N2a) allowed the initial confirmation of the presence of C-CTX1 in contaminated fish samples from the abovementioned areas, nevertheless the lack of commercially available reference materials for these particular ciguatoxin (CTX) analogues has been a major limitation to progress research. The EuroCigua project allowed the preparation of C-CTX1 laboratory reference material (LRM) from fish species (Seriola fasciata) from the Madeira archipelago (Portugal). This reference material was used to implement a liquid chromatography coupled to high-resolution mass spectrometry (LC-HRMS) for the detection of C-CTX1, acquisition of full-scan as well as collision-induced mass spectra of this particular analogue. Fragmentation pathways were proposed based on fragments obtained. The optimized LC-HRMS method was then applied to confirm C-CTX1 in fish (Bodianus scrofa) caught in the Selvagens Islands (Portugal). PY 2020 PD APR SO Toxins SN 2072-6651 PU MDPI AG VL 12 IS 4 UT 000533393900036 DI 10.3390/toxins12040267 ID 73630 ER EF