303 results on '"Gago Martínez A"'
Search Results
2. Ciguatoxin-like toxicity distribution in flesh of amberjack (Seriola spp.) and dusky grouper (Epinephelus marginatus)
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Ramos-Sosa, María José, García-Álvarez, Natalia, Sanchez-Henao, Andres, Padilla, Daniel, Sergent, Freddy Silva, Gago-Martínez, Ana, Diogène, Jorge, Caballero, María José, Fernández, Antonio, and Real, Fernando
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- 2023
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3. In Silico Simulations and Functional Cell Studies Evidence Similar Potency and Distinct Binding of Pacific and Caribbean Ciguatoxins
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Raposo-García, Sandra, Castro, David, Lence, Emilio, Estévez, Pablo, Leão, José Manuel, González-Bello, Concepción, Gago-Martínez, Ana, Louzao, M. Carmen, Vale, Carmen, and Botana, Luis M.
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- 2022
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4. Chemistry, Toxicology and Etiology of Marine Biotoxins
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Naomasa Oshiro, Ana Gago-Martínez, and Aurelia Tubaro
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n/a ,Naval architecture. Shipbuilding. Marine engineering ,VM1-989 ,Oceanography ,GC1-1581 - Abstract
Marine biotoxins refer to bioactive natural products primarily produced by microalgae and bacteria and may affect aquatic organisms and human health [...]
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- 2024
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5. Melatonin content in walnuts and other commercial nuts. Influence of cultivar, ripening and processing (roasting)
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Verde, Antía, Míguez, Jesús M., Leao-Martins, Jose Manuel, Gago-Martínez, Ana, and Gallardo, Mercedes
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- 2022
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6. De escritura y escritos en O Salnés medieval
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Gago Martínez, Luis Alejandro, primary
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- 2024
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7. Variability of vitamin B12 concentrations in waters along the Northwest Iberian shelf
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Barber-Lluch, Esther, Joglar, Vanessa, Moreiras, Guillermo, Leão, Jose Manuel, Gago-Martínez, Ana, Fernández, Emilio, and Teira, Eva
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- 2021
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8. First Case of Brevetoxicosis Linked to Rough-Toothed Dolphin (Steno bredanensis) Mass-Mortality Event in Eastern Central Atlantic Ocean: A Climate Change Effect?
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Antonio Fernández, Eva Sierra, Manuel Arbelo, Ana Gago-Martínez, Jose Manuel Leao Martins, Natalia García-Álvarez, Yara Bernaldo de Quiros, Marina Arregui, Ana Isabel Vela, and Josue Díaz-Delgado
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biotoxin ,Karenia brevis ,Harmful algal bloom ,climate change ,PbTx ,Science ,General. Including nature conservation, geographical distribution ,QH1-199.5 - Abstract
Harmful algal blooms (HABs) have been increasingly recorded over the last decades and much work has linked these events to multiple oceanographic and climate disturbances. HABs can affect ecosystems either as events that affect dissolved oxygen, clog fish gills, or smother corals or through the production of biotoxins which affect living marine resources through food web transfers or aerosols. HAB represent a natural driver of decline and potential extinction of aquatic organisms, from invertebrates to mammals, which may offer little evolutionary adaptation particularly in very high and long-lasting exposures. Despite numerous multispecies mass-mortality events linked to HAB-associated biotoxicosis globally, there are no records in cetaceans off the central eastern Atlantic Ocean. Herein, we report the epidemiology, pathologic, microbiologic and toxicologic investigation results attesting to the first documentation of cetacean mass-mortality in European waters associated with brevetoxins. Twelve rough-toothed dolphins (Steno bredanensis) were found dead adrift or beached along the southwestern coast of Gran Canaria from April 28th to May 7th, 2008. Although pathologic examinations were limited by moderate to advanced autolysis and decomposition of the carcasses, consistent findings included multisystemic hemorrhage and undigested ingesta within the gastric compartments, mainly salema porgy (Sarpa salpa). Toxicologic analysis of gastric contents identified PbTx2 and PbTx3 brevetoxins. Our results provide compelling toxicopathologic evidence of fatal brevetoxicosis in a cohort of rough-toothed dolphins. These data add to the limited knowledge on pathology of HAB in cetaceans and provide the first account of brevetoxicosis in European waters. No other mass-mortality or individual fatality of any cetacean species has been linked to brevetoxicosis in the Canary Islands since this event.
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- 2022
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9. Implementation of liquid chromatography tandem mass spectrometry for the analysis of ciguatera fish poisoning in contaminated fish samples from Atlantic coasts
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Estevez, Pablo, Castro, David, Manuel Leao, J., Yasumoto, Takeshi, Dickey, Robert, and Gago-Martinez, Ana
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- 2019
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10. Chemistry, Toxicology and Etiology of Marine Biotoxins.
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Oshiro, Naomasa, Gago-Martínez, Ana, and Tubaro, Aurelia
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TOXINS ,DINOFLAGELLATES ,TOXICOLOGY ,GYMNODINIUM ,PUFFERS (Fish) ,HEALTH risk assessment ,MARINE toxins ,DOMOIC acid - Abstract
The document "Chemistry, Toxicology and Etiology of Marine Biotoxins" provides an in-depth exploration of the chemical properties, toxicology, and health risks associated with marine biotoxins. These toxins, primarily produced by microalgae and bacteria, can have detrimental effects on both aquatic organisms and human health. The document discusses various types of marine biotoxins, such as tetramine, palytoxins, ciguatoxins, tetrodotoxins, and okadaic acids, and presents new research and findings in these areas. It also highlights the methods used to detect and analyze these toxins. The aim of the document is to contribute to the understanding and management of marine biotoxins and their potential impact on human health. The special issue includes four original articles focusing on ciguatera poisoning and pufferfish poisoning. These articles provide protocols for preparing purified ciguatoxin reference materials, analyze CTX profiles in fish from different regions, and report on CTX levels and profiles in Japanese grouper species. The authors emphasize the importance of implementing risk management strategies based on recommended levels to protect public health and ensure sustainable use of fisheries resources. [Extracted from the article]
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- 2024
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11. Preparation of Ciguatoxin Reference Materials from Canary Islands (Spain) and Madeira Archipelago (Portugal) Fish
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David Castro, Pablo Estévez, José Manuel Leao-Martins, Robert W. Dickey, Natalia García-Álvarez, Fernando Real, Pedro Reis Costa, and Ana Gago-Martínez
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ciguatera poisoning ,Caribbean Ciguatoxins ,C-CTX1 ,reference materials ,food safety ,Naval architecture. Shipbuilding. Marine engineering ,VM1-989 ,Oceanography ,GC1-1581 - Abstract
Ciguatoxins (CTXs) are naturally occurring neurotoxins that can accumulate in fish and cause Ciguatera Poisoning (CP) in seafood consumers. Ciguatoxic fish have been detected in tropical and subtropical regions of the world including the Pacific and Indian Oceans, the Caribbean Sea, and more recently in the northeast Atlantic Ocean. The biogeographic distribution of ciguatoxic fish appears to be expanding; however, the paucity of CTX standards and reference materials limits the ability of public health authorities to monitor for these toxins in seafood supply chains. Recent reports establish that Caribbean Ciguatoxin-1 (C-CTX1) is the principal toxin responsible for CP cases and outbreaks in the northeast Atlantic Ocean and that C-CTX congener profiles in contaminated fish samples match those from the Caribbean Sea. Therefore, in this work, C-CTX reference materials were prepared from fish obtained from the northeast Atlantic Ocean. The collection of fish specimens (e.g., amberjack, grouper, or snapper) was screened for CTX-like toxicity using the in vitro sodium channel mouse neuroblastoma cytotoxicity assay (N2a cell assay). Muscle and liver tissues from toxic specimens were pooled for extraction and purified products were ultimately profiled and quantified by comparison with authentic C-CTX1 using LC-MS/MS. This work presents a detailed protocol for the preparation of purified C-CTX reference materials to enable continued research and monitoring of the ciguatera public health hazard. To carry out this work, C-CTX1 was isolated and purified from fish muscle and liver tissues obtained from the Canary Islands (Spain) and Madeira archipelago (Portugal).
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- 2022
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12. Combined effects of warming and acidification on accumulation and elimination dynamics of paralytic shellfish toxins in mussels Mytilus galloprovincialis
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Braga, Ana C., Camacho, Carolina, Marques, António, Gago-Martínez, Ana, Pacheco, Mário, and Costa, Pedro R.
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- 2018
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13. Emerging Marine Biotoxins
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Gerssen, Arjen and Gago-Martínez, Ana
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The emergence of marine and freshwater toxins in geographical areas where they have never been reported before is a concern due to the considerable impact on (sea)food contamination, and consequently, on public health. Several groups of marine biotoxins, in particular tetrodotoxins, ciguatoxins, and palytoxins, are included among the relevant marine biotoxins that have recently emerged in several coastal areas. A similar situation has been observed in freshwater, where cyanobacterial toxins, such as microcystins, could end up in unexpected areas such as the estuaries where shellfish are cultivated. Climate change and the increased availability of nutrients have been considered as the key factors in the expansion of all of these toxins into new areas; however, this could also be due to more intense biological invasions, more sensitive analytical methods, or perhaps even an increased scientific interest in these natural contaminations. The incidences of human intoxications due to the consumption of seafood contaminated with these toxins have made their study an important task to accomplish in order to protect human health. This Special Issue has a focus on a wide variety of emerging biotoxin classes and techniques to identify and quantify them.
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- 2019
14. Ciguatoxin Detection in Flesh and Liver of Relevant Fish Species from the Canary Islands
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María José Ramos-Sosa, Natalia García-Álvarez, Andres Sanchez-Henao, Freddy Silva Sergent, Daniel Padilla, Pablo Estévez, María José Caballero, José Luís Martín-Barrasa, Ana Gago-Martínez, Jorge Diogène, and Fernando Real
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ciguatoxins ,amberjack ,dusky grouper ,moray eel ,common two-banded seabream ,Canary Islands ,Medicine - Abstract
The Canary Islands are a ciguatoxin (CTX) hotspot with an established official monitoring for the detection of CTX in fish flesh from the authorised points of first sale. Fish caught by recreational fishermen are not officially tested and the consumption of toxic viscera or flesh could lead to ciguatera poisoning (CP). The objectives of this study were to determine the presence of CTX-like toxicity in relevant species from this archipelago, compare CTX levels in liver and flesh and examine possible factors involved in their toxicity. Sixty amberjack (Seriola spp.), 27 dusky grouper (Epinephelus marginatus), 11 black moray eels (Muraena helena) and 11 common two-banded seabream (Diplodus vulgaris) were analysed by cell-based assay (CBA) and Caribbean ciguatoxin-1 (C-CTX1) was detected by liquid chromatography mass spectrometry (LC-MS/MS) in all these species. Most of the liver displayed higher CTX levels than flesh and even individuals without detectable CTX in flesh exhibited hepatic toxicity. Black moray eels stand out for the large difference between CTX concentration in both tissues. None of the specimens with non-toxic liver showed toxicity in flesh. This is the first evidence of the presence of C-CTX1 in the common two-banded seabream and the first report of toxicity comparison between liver and muscle from relevant fish species captured in the Canary Islands.
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- 2022
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15. Instrumental Methods for Paralytic Shellfish Toxins
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Ben-Gigirey, Begoña, Turner, Andrew David, Gago-Martínez, Ana, Gopalakrishnakone, P., Editor-in-chief, Haddad Jr., Vidal, editor, Tubaro, Aurelia, editor, Kim, Euikyung, editor, and Kem, William R., editor
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- 2016
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16. Incidence of severe critical events in paediatric anaesthesia (APRICOT): a prospective multicentre observational study in 261 hospitals in Europe
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Klimscha, Walter, Konecny, Regina, Luntzer, Robert, Morawk-Wintersperger, Ulrike, Neiger, Franz, Rustemeyer, Lydia, Breschan, Christian, Frey, Denise, Platzer, Manuela, Germann, Reinhard, Oeding, Joachim, Stoegermüller, Birgit, Ziegler, Bernhard, Brotatsch, Philipp, Gutmann, Anton, Mausser, Gerlinde, Messerer, Brigitte, Toller, Wolfgang, Vittinghoff, Maria, Zangl, Gregor, Seidel-Ahyai, Natascha, Hochhold, Christoph, Kroess, Ruth, Paal, Peter, Cnudde, Steven, Coucke, Patricia, Loveniers, Birgit, Mitchell, John, Kahn, David, Pirotte, Thierry, Pregardien, Caroline, Veyckemans, Francis, Coppens, Marc, De Hert, Stefan, Heyse, Björn, Neckebroek, Martine, Parashchanka, Aliaksandra, Van Limmen, Jurgen, Van Den Eynde, Nancy, Vanpeteghem, Caroline, Wyffels, Piet, Lalot, Michaël, Lechat, Jean-Paul, Stevens, France, Casaer, Sari, De Groote, Françoise, De Pooter, Françoise, De Villé, Andrée, Gerin, Marc, Magasich, Natalia, Sanchez Torres, Cristel, Van Deenen, Denise, Berghmans, Johan, Himpe, Dirk, Roofthooft, Eva, Joukes, Ellen, Smitz, Carine, Van Reeth, Veronique, Huygens, Christel, Lauweryns, Julie, De Smet, Karen, Najafi, Nadia, Poelaert, Jan, Van de Velde, Anne, Van Mossevelde, Veerle, Bekavac, Ivan, Butkovic, Diana, Heli Litvic, Dubravka, Kerovec Soric, Ivana, Maretic, Hrvoje, Moscatello, Djurdjica, Popovic, Ljiljana, Micici, Slobodan, Stuck Tus, Ivana, Kalagac Fabris, Lada, Simurina, Tatjana, Sulen, Nina, Kesic-Valpotic, Gordana, Djapic, Dajana, Žurek, Jirí, Jureckova, Lucie, Mackova, Iveta, Skacel, Monika, Weinlichova, Stanislava, Divák, Jan, Frelich, Michal, Urbanec, René, Biskupova, Vera, Mixa, Vladimir, Pavlickova, Jana, Afshari, Arash, Bøttger, Morten, Ellekvist, Marguerite B., Johansen, Mathias, Ingeborg Madsen, Birgitte, Christian Nilsson, Jens, Schousboe, Birgitte MB, Clausen, Nicola G., Hansen, Tom G., Phaff Steen, Nick, Ilmoja, Mari-Liis, Tonise, Virge, Karjagin, Juri, Kikas, Reet, Isohanni, Mika, Lyly, Anniina, Takala, Annika, Happo, Johanna, Kiviluoma, Kai, Martikainen, Kati, Aantaa, Riku, Manner, Tuula, Vilo, Sanna, Amory, Catherine, Ludot, Hugues, Lambotte, Patricia, Busche, René, Jacqmarcq, Olivier, Lejus, Corinne, Corouge, Julien, Erb, Christian, Garrigue, Delphine, Gillet, Patricia, Laffargue, Anne, Lambelin, Veronique, Le Freche, Hélène, Peresbota, Daliana, Richart, Pierre, Berton, Jerome, Chapotte, Catherine, Colbus, Laurent, Lehousse, Thierry, Monrigal, Jean, Baujard, Catherine, Roulleau, Philippe, Staiti, Giuseppe, Batoz, Hélène, Bordes, Maryline, Didier, Anne, Hamonic, Yann, Lagarde, Sylvaine, Nouette-Gaulain, Karine, Semjen, François, Zaghet, Brigitte, Dekens, Jacky, Delcuze, Axelle, Dupont, Hervé, Legrand, Aurélien, Raffoflandreur, Celine, Audren, Noémie, Camus, Blandine, Cartal, Marielle, Chazelet, Chantal, Davin, Isabelle, Guillier, Marion, Desjeux, Luc, Larcher, Claire, Grein, Elodie, Leclercq, Mickeal, Levitchi, Roxana, Rosu, Lilica, Simon, Dominique, Zang, Aurélien, Migeon, Anne, Gagey, Anne-Charlotte, Bourdaud, Nathalie, Carre, Anne-Charlotte, Duflo, Frédéric, Riche, Jean-Claude, Robert, Philippe, Druot, Emilie, Maupain, Olivier, Orliaguet, Gilles, Sabau, Lucie, Taright, Hanna, Uhrig, Lynn, Verchere-Montmayeur, Juliette, Debrabant, Lise, Pilla, Clotaire, Podvin, Alexandre, Roth, Benjamin, Dahmani, Souhayl, Julien-Marsollier, Florence, Sabourdin, Nada, Alexandri, Bogdan, Brezac, Gilles, de la Brière, Francois, Hayem, Catherine, Lhubat, Elizabeth, Paul Mission, Jean, Rémond, Charlotte, Dadure, Christophe, Maniora, Maud, Marie, Anais, Pirat, Philippe, Saour, Anne-Charlotte, Sola, Chrystelle, Ecoffey, Claude, Wodey, Eric, Adam, Christian, Standl, Thomas, Schindler, Ehrenfried, Yamamoto, Tomohiro, Brackhahn, Michael, Eich, Christoph Bernhard, Guericke, Holger, Kindermann, Petra, Laschat, Michael, Schink, Cornel, Wappler, Frank, Hoehne, Claudia, Skordou, Natalia, Ulrici, Johanna, Jetzek-Zader, Martin, Kienbaum, Peter, Meyer-Treschan, Tanja, Picker, Olaf, Schaefer, Maximilian S., Mielke, Golo, Baethge, Sabine, Ramminger, Axel, Bauer, Martin, Bollinger, Matthias, Hinz, José, Quintel, Michael, Russo, Sebastian G., Bauer, Michael, Geil, Dfominik, Kortgen, Andreas, Preussler, Niels-Peter, Hofmann, Ulrich, Raber, Manfred, Reindl, Doris, Becke, Karin, Oppenrieder, Karin, Schierlinger, Bettina, Roth, Jens, Funk, Wolfgang, Fischer, Thomas, Gernoth, Christian, Wiefelspütz, Christina, Volger, Hauke, Zederer, Nicole, Diers, Anja, Huber, Matthias, Schorer, Clemens, Weyland, Andreas, Schwarzkopf, Konrad, Grau, Catharina, Roth, Winfried, Holy, Rolf, Mader, Thomas, Peter, Laura, Supthut, Hauke, Kuehhirt, Thomas, Milde, Alexander, Fiedler, Fritz, Isselhorst, Carsten, Grundmann, Ulrich, Pattar, Alexander, Reinert, Jennifer, Ehm, Birgit, Fritzsche, Katrin, Gaebler, Ralf, Meybohm, Patrick, Hein, Maximilian, Guzman, Ines, Jokinen, Johanna, Kranke, Peter, Goebel, Ulrich, Harris, Sarah, Eisner, Christoph, Ochsenreiter, Miriam, Schoeler, Michael, Thil, Elke, Ellerkmann, Richard, Hoeft, Andreas, Neumann, Claudia, Weber, Stefan, Keilhauer, Julia, Kloessing, Jan, Schramm, Michael, Trieschmann, Uwe, Knauss, Kristina, Sinner, Barbara, Steinmann, Johannes, Koessler, Herbert, Kalliardou, Evagelia, Malisiova, Anna, Tsiotou, Adelais, Chloropoulou, Pelagia, Chrysi, Mpratzou, Iordanidou, Despoina, Ntavlis, Merkourios, Boda, Krisztina B, Guerin, Christilynn, Irwin, Janice, Magner, Claire, Nakhjavani, Solmaz, O'Hare, Brendan, Galvin, Deborah, Jamil, Yosry, Lesmes, Carlos, Barak, Yuri, Fisher, Haran, Kachko, Ludmyla, Katz, Jacob, Kirilov, Dmitry, Levinzon, Michael, Manevich, Yair, Nekrasov, Konstantin, Peled, Elia, Sanko, Elena, Schmain, Dmitri, Sheinkin, Olga, Simhi, Eliahu, Tarabikin, Alex, Trabkin, Evelina, Yagudaev, Irena, Zeitlin, Yelena, Zunser, Igor, Cerutti, Elisabetta, Maddalena Schellino, Maria, Valzan, Silvia, Lucia Pinciroli, Rosa, Bortone, Luciano, Cerati, Giorgia, Salici, Fabiana, Bussolin, Leonardo, Rizzo, Giuliana, Rossetti, Francesca, Marchesini, Laura, Tesoro, Simonetta, De Lorenzo, Brita, Guarracino, Fabio, Kuppers, Beate, Astuto, Marinella, Pitino, Sofia, Scalisi, Rita, Scordo, Lucia, D'Alessandro, Sandra, Dei Giudici, Luigi, Farinelli, Ivano, Lofino, Giuseppe, Marchetti, Giuliano, Giuseppe Picardo, Sergio, Reali, Simone, Vittori, Alessandro, Antonio Idone, Francesco, Sammartino, Maria, Sbaraglia, Fabio, Barbera, Cinzia, Bevilacqua, Michela, Cento, Valeria, Disma, Nicola, Kotzeva, Svetlana, Mameli, Leila, Montobbio, Giovanni, Passariello, Leandro, Punzo, Cinzia, Sileo, Rosanna, Viacava, Rosanna, Volpe, Claudia, Zanaboni, Clelia, Calderini, Edoardo, Genco, Daniele, Neri, Simona, Ottolina, Davide, Camporesi, Anna, Izzo, Francesca, Salvo, Ida, Wolfler, Andrea, Sanna, Andrea, Sciascia, Angela, Stoia, Paolo, Guddo, Annamaria, Lapi, Maria, Ivani, Giorgio, Longobardo, Annalisa, Mossetti, Valeria, Pedrotti, Dino, Grazzini, Maurizia, Meneghini, Luisa, Metrangolo, Salvatore, Michelon, Stefania, Minardi, Carmelo, Tognon, Costanza, Zadra, Nicola, Busi, Ilaria, Khotcholava, Magda, Guido Locatelli, Bruno, Sonzogni, Valter, Starita, Giusi, Almenrader, Nicole, Aurilio, Caterina, Sansone, Pasquale, Albarello, Raffaella, Bracci, Paolo, Cecini, Mariateresa, Cristina Mondardini, Maria, Pasini, Lorena, Vason, Milo, Zani, Gianluca, Zoppellari, Roberto, Pistidda, Laura, Cortegiani, Andrea, Maurizio Raineri, Santi, Hasani, Antigona, Hashimi, Medita, Ancupans, Agris, Barzdina, Arta, Straume, Zane, Zundane, Anda, Chlopin, Mikhail, Gestautaite, Dalia, Lukosiene, Laura, Paliokaite, Evelina, Razlevice, Ilona, Armoniene, Inesa, Bernotiene, Aurelija, Daugelavicius, Vidunas, Dockiene, Ilona, Gaidelyte, Lina, Saviciene, Nijole, Krikstaponiene, Jolita, Sidlovskaite-Baltake, Dominika, Stasevski, Vladyslav, Vaitoskaite, Agne, Gatt, David, Mifsud, Stephanie, Zammit, Simone, Allison, Celia, Aslami, Hamid, Eberl, Susanne, van Stijn, Mireille F M, Stevens, Markus F, Punt, Kees, van Osch, Rob, Bauwman, Arthur, Scholten, Harm, Svircevic, Vesna, Adriaens, Veronique, Dirckx, Maaike, Dogger, Jaap, Dons-Sinke, Ilse, Machotta, Andreas, Moors, Xavier, Rad, Mandana, Staals, Lonneke, van der Knijff - van Dortmont, Anouk, van der Marel, Caroline, Sieben, Anne, van der Zwan, Tim, Veldhuizen, Marianne, Alders, David, Buhre, Wolfgang, Vermeulen, Petronella M, Engel, Nicole, Vossen, Carine, Mahadewsing, Ravin, Meijer, Patrick, Gerling, Volker, van der Schatte Olivier, Roelof, van Doorn, Thea, Vons Mark Hendriks, Kristy, Lako, Sandra, jan Scheffer, Gert, Tielens, Luc, Voet, Marieke, Absalom, Anthony, Bergsma, Margot, Spanjer, Vera, Spanjersberg, Rob, van de Riet, Yvette, Volkers, Martin, de Graaff, Jurgen C., Hopman, Geranne A.J., Kappen, Teus H., Hannie, J., Megens, A.M., Numan, Sandra C., Schouten, Anton N.J., Turner, Nigel M., Van Der Werff, Désirée B.M., Wensing, Renee T.M., Ephraim, Erik, Nolte, Claire, Reikvam, Tore, Fredrik Lund, Ole, Skaaden, Lene, Marthe Ballovarre, Kari, Bakken Boerke, Wenche, Grindheim, Guro, Lindenskov, Pal H H, Beate Solas, Anne, Sponheim, Sjur, Ullensvang, Kyrre, Viken, Oddbjorn, Marie Drage, Inger, Gymoese Berthelsen, Kasper, Anders Kroken, Bjørn, Bergland, Unni, Pryzmont, Miroslaw, Talalaj, Mariola, Wasiluk, Malgorzata, Zalewska, Dorota, Damps, Maria, Siemek-Mitela, Jadzia, Wieczorek, Pawel, Juzwa, Magdalena, Rosada-Kurasinska, Jowita, Bartkowska-Sniatkowska, Alicja, Cettler, Maciej, Kopycinska, Renata, Rudewicz, Iwona, Sobczyk, Jaek, Wojciechowski, Dariusz, Baranowski, Artur, Basiewicz, Ewa, Mierzewska-Schmidt, Magdalena, Retka, Wlodzimierz, Sawicki, Piotr, Checinska, Magdalena, Zielinska, Marzena, Zurawska, Magdalena, Leal, Teresa, Mascarenhas, Catia, Pedro Pina, António, Joao Susano, Maria, Moniz, Antonio, Teresa Rocha, Maria, Calvao Santos, Carolina, Domingas Patuleia, M, Pereira, Ricardo, Roxo, Helena, Amaral, Rosa, Guedes, Isabel, Gomes, Cristina, Gonçalves, Marta, Salgado, Helena, Santos, Maria, Rodrigues, Sara, Sa, Angela, Machado, Elvira, Pé d'Arca, Sandra, Seabra, Manuel, Mihaela Gheorghe, Ligia, Ivascu, Constantin, Moraru-Draghici, Lucia, Suvejan, Mirela, Babici, Remus, Eniko, Kovacs, Hogea, Cristiana, Mihaela, Dubau, Nicoleta, Daraban, Barbunc, Danut, Maria Nistor, Alina, Stefan, Violeta, Catalina Ionescu, Gabriela, Davidescu, Irina, Teodora Nastase, Alina, Dumitru Rusu, Florin, Badarau, Victoria, Cindea, Iulia, Moscaliuc, Melania, Olteanu, Dana, Petrescu, Luxita, Ceuca, Daniela, Galinescu, Irena, Badeti, Rodica, Capusan, Alin, Cucui-Cozma, Cosmina, Popescu, Barbura, Cimpeanu, Luminita, Birliba, Mihaela-Petronela, Miulescu, Magdalena, Balamat, Stefania, Gurita, Adriana, Ilie, Luminita, Mocioiu, Gabriel, Pick, Darina, Sirghie, Rodica, Tabacaru, Radu, Trante, Irinel, Horhota, Lucian, Bandrabur, Daniela, Ciobanu, Tudor, Cuciuc, Veaceslav, Munteanu, Valentin, Olaru, Valentin, Paiu, Corneliu, Savu, Anca, Trifan, Oana, Elena Malos, Anca, Glazunov, Anton, Ivanov, Alexander, Poduskov, Evgeny, Popov, Alexander, Guskov, Igor, Lugovoy, Alexander, Nechaev, Vladislav, Ovezov, Alexey, Basov, Mikhail, Kochkin, Vladimir, Lazarev, Vladimir, Chizhov, Dmitri, Ostreikov, Ivan, Tolasov, Konstantin, Budic, Ivana, Marjanovic, Vesna, Draskovic, Biljana, Pandurov, Marina, Simin, Jovana, Dolinaj, Vladimir, Janjevic, Dusanka, Mandras, Ana, Mircetic, Maja, Petrovic, Sladjana, Rebac, Vlatka, Slavkovic, Bojana, Stevanovic, Vesna, Velcev, Ana, Knezevic, Mirjana, Milojevic, Irina, Puric, Selena, Simic, Irena, Stevic, Marija, Stranjanac, Vladimir, Simic, Dusica, Cabanova, Barbora, Hanula, Miloslav, Grynyuk, Andry, Berger, Jelena, Cerne, Uros, Nastran, Andraz, Pirc, Dejan, Popic, Rok, Stupnik, Spela, Rubio, Paloma, del Río, Cristina, Benito, Pilar, Pino, Gema, Gutierrez, Ignacio, Gutierrez Valcarcel, Andrea, León Carsi, Irene, Perez Garcia, Anibal, López Galera, Sílvia, Marco Valls, Joan, Ricol Lainez, Laura, Vallejo Tarrat, Andrea, Artes, David, Banus, Ester, Chirichiello, Luca, De Abreu, Leidy, De Josemaria, Belen, Helena Gaitan, M, Garces, Antonio, Lazaro, Juan J, Manen Berga, Ferran, Molies, Dolors, Monclus, Enric, Navaro, Montserrat, Pamies, Carmen, Perelló, Marina, Prat, Mar, Ribo, Laura, Angeles Sanz, M, Serrano, Silvia, Sola Ruiz, Eva, Anuncia Escontrela Rodríguez, Blanca, Maria Gago Martinez, Andrea, Martínez Ruiz, Alberto, De La Cruz Benito, Fausto, Gabilondo Garcia, Gustavo, Martinez Maldonado, Ever, Noriega, Bryant, Oller Duque, Lara, Olmos Mendez, Alberto, Perez- Ferrer, Antonio, Reinoso Barbero, Francisco, Acevedo Bambaren, Ismael, Domínguez, Fernando, Franco, Teresa, Jiménez, Anabel, Melero, Alicia, Feliu, Montserrat, García, Irene, Montferrer, Núria, Munar, Francisca, Muro, Cristina, Nuño, Rosario, Perera, Remel, Schmucker, Erika, Börjesson, Glenda, Gillberg, Lars, Castellheim, Albert, Sandström, Kerstin, Bauer, Annette, Roos, Torbjörn, Hedlund, Lars, Boegli, Yann, Dolci, Mirko, Marcucci, Carine, Spahr-Schopfer, Isabelle, Habre, Walid, Pellegrini, Michel, Book, Malte, Errass, Loreen, Riggenbach, Christine, Casutt, Mattias, Hölzle, Martin, Hurni, Thomas, Jöhr, Martin, Mauch, Jacqueline, Anselmi, Luciano, Anselmi, Irene, Jacomet, Alfred, Oberhauser, Markus, Wossner, Stephanie, Zettl, Angelika, Erb, Thomas, Mackiewicz, Tomasz, Simitzes, Helena, Ozer, Yetkin, Takil, Arzu, Alanoglu, Zekeriyya, Bermede, Onat, Cakar Turhan, K.Sanem, Alkis, Neslihan, Yildirim Guclu, Cigdem, Ceyda Meco, Basak, Hatipoglu, Zehra, Ozcengiz, Dilek, Begec, Zekine, Ilksen Toprak, Huseyin, Kendigelen, Pinar, Cigdem Tütüncü, Ayse, Karadeniz, Meltem Savran, Seyhan Ozkan, Tulay, Sivrikoz, Nuket, Kemal Arslantas, Mustafa, Hizal, Ayse, Tore Altun, Gülbin, Umuroglu, Tumay, Baris, Sibel, Kazak Bengisun, Zuleyha, Goncharenko, Galyna, Khrapak, Maksym, Klymenko, Tetyana, Pavlenko, Vitaliy, Prysiazhniuk, Dmytro, Rudio, Olga, Varyvoda, Mykhailo, Vodianytskyi, Sergii, Boryshkevych, Ivanna, Kyselova, Iryna, Trikash, Nikolay, Albokrinov, Andrew, Perova-Sharonova, Valentina, Sklyar, Vitaliy, Surkov, Denis, Abdelaal, Amr, Barber, Nicola, Checuti, Sarah, Godsiff, Leisha, Johanne, Lynch, Simpson, Joanna, Underhill, Helen, Diwan, Rishi, Kelgeri, Nivedita, Masip, Nuria, Ravi, Radha, Roberts, Steve, Cillis, Annagrazia, Marcus, Ritchie, Merella, Federica, Love, David, Baraggia, Paolo, Bird, Victoria, Hussey, Joseph, Alderson, Peter, Bartholomew, Karen, Moncreiff, Michael, Davidson, Sarah, Hare, Alison, Kotecha, Ami, Lee, Corina, Liyanage, Ganga, Patel, Shivali, Samani, Amee, Abou-Samra, Mark, Boyd, Matthew, Hullatt, Laurence, Levy, David, Pauling, Mark, Sharman, Sarah-Jane, Smith, Natalie, Rutherford, John, Cavalier, Alison, Locke, Christie, Sage, Frederic, Bapat, Smita, Hammerschlag, Jacinda, Ioannou, Ioannis, King, Stephanie, Pegg, Rachel, Salota, Vishal, Sketcher, Jonathan, Thadsad, Muthu, Zeitlin, Deborah, Jack, Ewan, Lang, Colin, Ahmed, Samira, Ayyash, Reema, Bari, Francoise, Bell, Sarah J, Elizabeth Biercamp, Claire, Briggs, Sandra, Gabriella Elena Clement, Maria, Dalton, Mark, Ali Eissa Eid, Mohamed, Gandhi, Monica, Harmen Herrema, Idse, Khaffaf, Ranj, Jeng Min Law, Savio, McClintock, Joanna, Ireland, Nicholas, Majid Saleem, Mohammed, Smith, Fiona, Cohen, Marc, Lee, Clover-Ann, O'Donahue, Lizanne, Powell, Alex, Rawlinson, Ellen, Snoek, Aarjan, Weiss, Katja, Wellesley, Hugo, Crawford, Michael, Abdel-Hafiz, Mostafa, Day, Alexandra, Rajamani, Balaji, Saha, Rita, Wright, Dave, Chee, Lew-Chin, Bew, Stephanie, Homer, Rachel, Malarkkan, Nalini, Wolfe Barry, Juliet, Angadi, Pradeep, Cagney, Brid, De Melo, Eric, Dekker, Elsa, Helm, Emma, Jones, Gareth, Peiris, Kawshala, Russell, William, Slater, Patricia, Sodhi, Puja, Browning, Mike, Phillips, Trudie, Van Hecke, Rachel, Muir, Vimty, Singh, Piyush, Soskova, Tereza, Cumming, Craig, Farquharson, Pamela, Pearson, Karen, Shaw, Neil, Whiteside, Jonathan, Whyte, Emma, Byers, Gordon, Davies, Kay, Engelhardt, Thomas, Faliszewski, Isabella, Johnston, Graham, Kaufmann, Nils, Kusnirikova, Zuzana, Wilson, Graham, Carachi, Peter, Makin, Andrew, Foster, Brian, Lipczynski, Dariusz, Mawer, Rebecca, Rutherford, William, Rogerson, David, Rushman, Sarah, Taylor, Christopher, Tomlinson, William, Dix, Philippa, Woodward, Tom, Bell, Graham, Boyle, David, Cloherty, Marianne, Cullen, Julia, Cullen, Pauline, Fairgrieve, Ross, Ghent, Robert, Glasgow, Russell, Gordeeva, Elena, Harden, Alison, Hivey, Sarah, Jerome, Kevin, McKee, Lesley, Morton, Neil, Pribul, Vicky, Sinclair, John, Steiner, Maria, Steward, Heather, Sweeney, Lorraine, Thomson, Wendy, Whiteside, Jeanette, Dalton, Andrew, Ross, Mark, Smith, Carolyn, Allen, Claire, Anders, Nicola, Barlow, Victoria, Bassett, Mike, Darwin, Leanne, Davison, Rachel, Diacono, Jacques, Hobbs, Amy, Hutchinson, Adel, Lomas, Bernadette, Lonsdale, Hannah, Nasser, Leila, Oshan, Vimmi, Patel, Pradip, Raistrick, Christopher, Scott-Warren, Victoria, Talbot, Laura, Wai, Carolynn, Childs, Sophie, Dickinson, Matthew, Bloomfield, Tom, Garrioch, Sweyn, Watson, Karen, Gaynor, James, Harrison, Richard, Lee, Juliette, Blythe, Elizabeth, Dorman, Teresa, Eissa, Ayman, Ellwood, James, Gooch, Ingrid, Hearn, Robert, Hodgetts, Vanessa, John, Robert, Kirton, Christine, Ladak, Nadia, Morgan, Judith, Plant, Nina, Shepherd, Elizabeth, Short, Judith, Stack, Charles, Steel, Simon, Taylor, Matthew, Thomas, Deborah, Wilson, Catharine, Wilson-Smith, Elaine, Bradbury, Carol L., Hussain, Nageena, Mayell, Antonia, Mesbah, Ahmed, Qureshi, Arif, Vaidyanath, Chandra, Geary, Tim, Hawksworth, Chris, Parasuraman, Tamaraichelvi, Perry, Nicole, Banerjee, Indrani, Barr, Katharine, Butler, Patrick, Davies, Jack, Flewin, Lisa, Gande, Richard, Montague, James, Plumb, James, Pratt, Thomas, Sutherland, Paul, Vail, Hannah, Wilkins, Andrew, Hunter, Catherine, Russell, Susan, Thomas, Alun, Mifsud, Mark, Strachan, Dominic, Leva, Brigitte, Plichon, Benoit, Harlet, Pierre, Virag, Katalin, Hansen, Tom G, Morton, Neil S, and Boda, Krisztina
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- 2017
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17. An Update on Ciguatoxins and CTX-like Toxicity in Fish from Different Trophic Levels of the Selvagens Islands (NE Atlantic, Madeira, Portugal)
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Pedro Reis Costa, Pablo Estévez, Lucía Soliño, David Castro, Susana Margarida Rodrigues, Viriato Timoteo, José Manuel Leao-Martins, Carolina Santos, Neide Gouveia, Jorge Diogène, and Ana Gago-Martínez
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ciguatoxins ,Selvagens Islands ,seafood safety ,Gambierdiscus ,ciguatera ,Medicine - Abstract
The Selvagens Islands, which are a marine protected area located at the southernmost point of the Portuguese maritime zone, have been associated with fish harboring ciguatoxins (CTX) and linked to ciguatera fish poisonings. This study reports the results of a field sampling campaign carried out in September 2018 in these remote and rarely surveyed islands. Fifty-six fish specimens from different trophic levels were caught for CTX-like toxicity determination by cell-based assay (CBA) and toxin content analysis by liquid chromatography with tandem mass spectrometry (LC-MS/MS). Notably, high toxicity levels were found in fish with an intermediate position in the food web, such as zebra seabream (Diplodus cervinus) and barred hogfish (Bodianus scrofa), reaching levels up to 0.75 µg CTX1B equivalent kg−1. The LC-MS/MS analysis confirmed that C-CTX1 was the main toxin, but discrepancies between CBA and LC-MS/MS in D. cervinus and top predator species, such as the yellowmouth barracuda (Sphyraena viridis) and amberjacks (Seriola spp.), suggest the presence of fish metabolic products, which need to be further elucidated. This study confirms that fish from coastal food webs of the Selvagens Islands represent a high risk of ciguatera, raising important issues for fisheries and environmental management of the Selvagens Islands.
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- 2021
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18. Interlaboratory Evaluation of Multiple LC–MS/MS Methods and a Commercial ELISA Method for Determination of Tetrodotoxin in Oysters and Mussels
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Universidade de Santiago de Compostela. Departamento de Farmacoloxía, Farmacia e Tecnoloxía Farmacéutica, Turner, Andrew D., Dean, Karl J., Dhanji-Rapkova, Monika, Dall’Ara, Sonia, Pino, Florella, McVey, Claire, Haughey, Simon, Logan, Natasha, Elliot, Christopher, Gago Martínez, Ana, Leao, José Manuel, Giráldez, Jorge, Gibbs, Ryan, Thomas, Krista, Pérez-Calderón, Ruth, Faulkner, Dermot, McEneny, Hugh, Savar, Veronique, Reveillon, Damien, Hess, Philipp, Arévalo, Fabiola, Lamas Castro, Juan Pablo, Cagide, Eva, Álvarez, Mercedes, Antelo Queijo, Álvaro, Klijnstra, Mirjam D., Oplatowska-Stachowiak, Michalina, Kleintjens, Tim, Sajic, Nermin, Boundy, Michael J., Maskrey, Benjamin, Harwood, D. Tim, González Jartín, Jesús María, Alfonso Rancaño, María Amparo, Botana López, Luis Miguel, Universidade de Santiago de Compostela. Departamento de Farmacoloxía, Farmacia e Tecnoloxía Farmacéutica, Turner, Andrew D., Dean, Karl J., Dhanji-Rapkova, Monika, Dall’Ara, Sonia, Pino, Florella, McVey, Claire, Haughey, Simon, Logan, Natasha, Elliot, Christopher, Gago Martínez, Ana, Leao, José Manuel, Giráldez, Jorge, Gibbs, Ryan, Thomas, Krista, Pérez-Calderón, Ruth, Faulkner, Dermot, McEneny, Hugh, Savar, Veronique, Reveillon, Damien, Hess, Philipp, Arévalo, Fabiola, Lamas Castro, Juan Pablo, Cagide, Eva, Álvarez, Mercedes, Antelo Queijo, Álvaro, Klijnstra, Mirjam D., Oplatowska-Stachowiak, Michalina, Kleintjens, Tim, Sajic, Nermin, Boundy, Michael J., Maskrey, Benjamin, Harwood, D. Tim, González Jartín, Jesús María, Alfonso Rancaño, María Amparo, and Botana López, Luis Miguel
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Background Given the recent detection of tetrodotoxin (TTX) in bivalve molluscs but the absence of a full collaborative validation study for TTX determination in a large number of shellfish samples, interlaboratory assessment of method performance was required to better understand current capabilities for accurate and reproducible TTX quantitation using chemical and immunoassay methods. Objective The aim was to conduct an interlaboratory study with multiple laboratories, using results to assess method performance and acceptability of different TTX testing methods. Methods Homogenous and stable mussel and oyster materials were assessed by participants using a range of published and in-house detection methods to determine mean TTX concentrations. Data were used to calculate recoveries, repeatability, and reproducibility, together with participant acceptability z-scores. Results Method performance characteristics were good, showing excellent sensitivity, recovery, and repeatability. Acceptable reproducibility was evidenced by HorRat values for all LC–MS/MS and ELISA methods being less than the 2.0 limit of acceptability. Method differences between the LC–MS/MS participants did not result in statistically different results. Method performance characteristics compared well with previously published single-laboratory validated methods and no statistical difference was found in results returned by ELISA in comparison with LC–MS/MS. Conclusion The results from this study demonstrate that current LC–MS/MS methods and ELISA are on the whole capable of sensitive, accurate, and reproducible TTX quantitation in shellfish. Further work is recommended to expand the number of laboratories testing ELISA and to standardize an LC–MS/MS protocol to further improve interlaboratory precision. Highlights Multiple mass spectrometric methods and a commercial ELISA have been successfully assessed through an interlaboratory study, demonstrating excellent performance.
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- 2023
19. La entropía espectral en la monitorización de la profundidad de la anestesia
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Escontrela Rodríguez, B., Gago Martínez, A., Merino Julián, I., and Martínez Ruiz, A.
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- 2016
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20. High Levels of Tetrodotoxin (TTX) in Trumpet Shell Charonia lampas from the Portuguese Coast
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Pedro Reis Costa, Jorge Giráldez, Susana Margarida Rodrigues, José Manuel Leão, Estefanía Pinto, Lucía Soliño, and Ana Gago-Martínez
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tetrodotoxin ,marine biotoxins ,seafood safety ,HILIC-MS/MS ,Medicine - Abstract
Tetrodotoxin (TTX) is a potent neurotoxin, considered an emerging toxin in Europe where recently a safety limit of 44 µg TTX kg−1 was recommended by authorities. In this study, three specimens of the large gastropod trumpet shell Charonia lampas bought in a market in south Portugal were analyzed using a neuroblastoma cell (N2a) based assay and by LC-MS/MS. N2a toxicity was observed in the viscera of two individuals analyzed and LC-MS/MS showed very high concentrations of TTX (42.1 mg kg−1) and 4,9-anhydroTTX (56.3 mg kg−1). A third compound with m/z 318 and structurally related with TTX was observed. In the edible portion, i.e., the muscle, toxin levels were below the EFSA recommended limit. This study shows that trumpet shell marine snails are seafood species that may reach the markets containing low TTX levels in the edible portion but containing very high levels of TTX in non-edible portion raising concerns regarding food safety if a proper evisceration is not carried out by consumers. These results highlight the need for better understanding TTX variability in this gastropod species, which is critical to developing a proper legal framework for resources management ensuring seafood safety, and the introduction of these gastropods in the markets.
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- 2021
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21. Accumulation of C-CTX1 in Muscle Tissue of Goldfish (Carassius auratus) by Dietary Experience
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Andres Sanchez-Henao, Natalia García-Álvarez, Daniel Padilla, María Ramos-Sosa, Freddy Silva Sergent, Antonio Fernández, Pablo Estévez, Ana Gago-Martínez, Jorge Diogène, and Fernando Real
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ciguatera ,Caribbean ciguatoxin ,muscle bioaccumulation ,cytotoxicity assay ,goldfish ,omnivorous fish ,Veterinary medicine ,SF600-1100 ,Zoology ,QL1-991 - Abstract
Ciguatoxins (CTXs) are produced by dinoflagellates usually present in tropical and subtropical waters. These toxins are bioaccumulated and transformed in fish causing ciguatera fish poisoning (CFP) in humans. Few trials have been performed to understand how CTXs are incorporated into fish. This study developed an experimental model of goldfish (Carassius auratus) fed flesh contaminated with Caribbean ciguatoxin (C-CTX1). Fourteen goldfish were fed 0.014 ng CTX1B (Eq. g−1 of body weight) daily, and control goldfish received non-toxic flesh. CTX presence was determined by a cell-based assay on days 1, 8, 15, 29, 36, 43, and 84. Toxicity was detected in muscle from the second sampling and then seemed to stabilize at ~0.03 ng CTX1B Eq. g−1. After two weeks, all experimental goldfish developed lethargy and loss of brightness, but only two of them displayed erratic swimming and jerking movements near the sixth sampling. One of these fish had its toxic diet replaced by commercial food for 60 more days; the fish showed recovery signs within the first weeks and no CTX activity was detected. These results indicate that C-CTX1 could accumulate in goldfish muscle tissue and produce toxic symptoms, but also remarked on the detoxification and recovery capacity of this species.
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- 2021
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22. Identification of Emerging Hazards in Mussels by the Galician Emerging Food Safety Risks Network (RISEGAL). A First Approach
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Marta López Cabo, Jesús L. Romalde, Jesus Simal-Gandara, Ana Gago Martínez, Jorge Giráldez Fernández, Marta Bernárdez Costas, Santiago Pascual del Hierro, Ánxela Pousa Ortega, Célia M. Manaia, Joana Abreu Silva, and Juan Rodríguez Herrera
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food safety ,risks ,bivalves ,Chemical technology ,TP1-1185 - Abstract
Emerging risk identification is a priority for the European Food Safety Authority (EFSA). The goal of the Galician Emerging Food Safety Risks Network (RISEGAL) is the identification of emerging risks in foods produced and commercialized in Galicia (northwest Spain) in order to propose prevention plans and mitigation strategies. In this work, RISEGAL applied a systematic approach for the identification of emerging food safety risks potentially affecting bivalve shellfish. First, a comprehensive review of scientific databases was carried out to identify hazards most quoted as emerging in bivalves in the period 2016–2018. Then, identified hazards were semiquantitatively assessed by a panel of food safety experts, who scored them accordingly with the five evaluation criteria proposed by EFSA: novelty, soundness, imminence, scale, and severity. Scores determined that perfluorinated compounds, antimicrobial resistance, Vibrio parahaemolyticus, hepatitis E virus (HEV), and antimicrobial residues are the emerging hazards that are considered most imminent and severe and that could cause safety problems of the highest scale in the bivalve value chain by the majority of the experts consulted (75%). Finally, in a preliminary way, an exploratory study carried out in the Galician Rías highlighted the presence of HEV in mussels cultivated in class B production areas.
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- 2020
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23. Ciguatoxin-Like Toxicity Distribution in Flesh of Amberjack (Seriola Spp.) and Dusky Grouper (Epinephelus Marginatus)
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Ramos Sosa, María José, primary, García Álvarez, Natalia, additional, Sanchez Henao, Andres, additional, Padilla, Daniel, additional, Silva Sergent, Freddy, additional, Gago Martínez, Ana, additional, Diogène, Jorge, additional, Caballero, María José, additional, Fernández, Antonio, additional, and Real, Fernando, additional
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- 2023
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24. Evaluation of Matrix Issues in the Applicability of the Neuro-2a Cell Based Assay on the Detection of CTX in Fish Samples
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David Castro, Ronald Manger, Oscar Vilariño, and Ana Gago-Martínez
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ciguatoxins ,neuroblastoma cell assay ,matrix effect ,Medicine - Abstract
Ciguatoxins (CTXs) are a group of neurotoxins responsible for the syndrome ciguatera fish poisoning (CFP) as a result of the consumption of contaminated fish. The presence of these toxins has been detected around the Pacific, Caribbean and Indian coasts. Recent reports indicate the emergence of CFP in other geographic areas, in particular in European coasts, of the Canary Islands (Spain) and Madeira (Portugal). A neuroblastoma cell line of murine origin (N2a) has been applied to assay different groups of neurotoxins, acting on voltage-gated sodium channel (VGSC) of excitable cells, N2a-MTT. The great potential of N2a-MTT as a sensitive tool for the CTXs screening is clearly recognized, notably because it allows the detection of these toxins at levels below recommended as security levels. However, the complexity of the matrix is a critical point on the application of N2a-MTT, which needs to be evaluated. The aim of this work is to provide recommendations for an implemented N2a-MTT method for CTXs determination in fish that avoids matrix effects, particularly those related to high lipid content.
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- 2020
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25. 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
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Pablo Estevez, Manoella Sibat, José Manuel Leão-Martins, Pedro Reis Costa, Ana Gago-Martínez, and Philipp Hess
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ciguatoxins ,HRMS ,Q-TOF ,ciguatera poisoning ,C-CTX1 ,fragmentation pathways ,Medicine - Abstract
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).
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- 2020
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26. Evaluation of Malolactic Bacteria Associated with Wines from Albariño Variety as Potential Starters: Screening for Quality and Safety
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Jacobo López-Seijas, Belén García-Fraga, Abigail F. da Silva, Xavier Zas-García, Lucía C. Lois, Ana Gago-Martínez, José Manuel Leão-Martins, and Carmen Sieiro
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lactic acid bacteria ,wine ,malolactic fermentation ,selected strains ,Chemical technology ,TP1-1185 - Abstract
The biodiversity of lactic acid bacteria in musts and wines of Albariño variety has been studied. The identification of species was addressed through a combination of biochemical and genetic methods (API® 50 CHL test, 16S rDNA and recA gene sequences, Amplified Ribosomal DNA Restriction Analysis -ARDRA- and 16S-26S intergenic region analysis). The results grouped the isolates into six species predominating those of the genus Lactobacillus and showing a typical biogeographical distribution. Among sixteen strains evaluated, eight of them showed malolactic activity. The study of the presence of genes hdc, odc, and tdc, along with the LC/MS-MS analysis of biogenic amines in wine, showed five strains lacking aminogenic ability. The absence of the pad gene in the above-mentioned strains discards its ability to produce volatile phenols that may adversely affect the aroma. Finally, all malolactic strains showed β-glucosidase activity so that they could contribute to enhance and differentiate the aromatic profile of Albariño wines.
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- 2020
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27. Evaluation of the shucking of certain species of scallops contaminated with domoic acid with a view to the production of edible parts meeting the safety requirements foreseen in the Union legislation
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EFSA CONTAM Panel, Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, Del Mazo, Jesús, Grasl-Kraupp, Bettina, Hogstrand, Christer, Chipman, Kevin James, Leblanc, Jean-Charles, Nebbia, Carlo Stefano, Nielsen, Elsa, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Schwerdtle, Tanja, Vleminckx, Christiane, Wallace, Heather, Gago Martínez, Ana, Gerssen, Arjen, Tubaro, Aurelia, Cascio, Claudia, Cortiñas Abrahantes, José, Steinkellner, Hans, Hoogenboom, Laurentius (Ron), European Commission, Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, Del Mazo, Jesús, Grasl-Kraupp, Bettina, Hogstrand, Christer, Leblanc, Jean-Charles, Nielsen, Elsa, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Schwerdtle, Tanja, Vleminckx, Christiane, Gago Martínez, Ana, Gerssen, Arjen, Tubaro, Aurelia, Cascio, Claudia, Cortiñas Abrahantes, José, Hoogenboom, Laurentius (Ron), Schrenk, Dieter [0000-0002-7717-5533], Bignami, Margherita [0000-0002-1525-6864], Bodin, Laurent [0000-0001-5671-3139], Del Mazo, Jesús [0000-0003-3269-3895], Grasl-Kraupp, Bettina [0000-0003-4889-6531], Hogstrand, Christer [0000-0001-7545-6975], Leblanc, Jean-Charles [0000-0003-2872-3414], Nielsen, Elsa [0000-0002-6874-2575], Ntzani, Evangelia [0000-0003-3712-4181], Petersen, Annette [0000-0003-3996-2701], Sand, Salomon [0000-0002-3360-0534], Schwerdtle, Tanja [0000-0002-4873-7488], Vleminckx, Christiane [0000-0002-9928-1601], Gago Martínez, Ana [0000-0001-5178-2338], Gerssen, Arjen [0000-0003-4271-1516], Tubaro, Aurelia [0000-0003-2773-2589], Cascio, Claudia [0000-0002-3810-4134], Cortiñas Abrahantes, José [0000-0002-4805-9429], and Hoogenboom, Laurentius (Ron) [0000-0002-8913-5328]
- Subjects
scallops ,Pooled Sample ,Project- en Accountmanagement ,Veterinary (miscellaneous) ,BU Contaminanten & Toxines ,Team Toxicology ,TP1-1185 ,Plant Science ,Scallops ,Microbiology ,Domoic acid ,chemistry.chemical_compound ,BU Contaminants & Toxins ,Animal science ,Pecten maximus ,TX341-641 ,Statistical analysis ,Food8822 ,VLAG ,biology ,Nutrition. Foods and food supply ,Shucking ,Sample size ,Chemical technology ,Member states ,Contamination ,biology.organism_classification ,sample size ,Team Natural Toxins ,shucking ,Scientific Opinion ,chemistry ,Sample size determination ,Scallop ,Animal Science and Zoology ,Parasitology ,Food Science - Abstract
57 p.-12 fig.-6 tab., EFSA was asked by the European Commission to provide information on the levels of domoic acid (DA) in whole scallops that would ensure that levels in edible parts are below the regulatory limit after shucking. This should include five species of scallops. In addition, EFSA was asked to recommend the number of scallops to be used in an analytical sample. To address these questions, EFSA received suitable data on DA for only one scallop species, Pecten maximus, i.e. data on pooled samples of edible and non-edible parts. A large part of the concentration levels was above the limit of quantification (LOQ) and only these data were used for the assessment. Shucking in most cases resulted in a strong decrease in the toxin levels. Statistical analysis of the data showed that levels in whole scallops should not exceed 24 mg DA/kg, 59 mg DA/kg and 127 mg DA/kg to ensure that levels in, respectively, gonads, muscle and muscle plus gonads are below the regulatory limit of 20 mg DA/kg with 99% certainty. Such an analysis was not possible for the other scallop species. In the absence of data from member states, published data of variations between scallops were used to calculate the sample size to ensure a 95% correct prediction on whether the level in scallops in an area or lot is correctly predicted to be compliant/non-compliant. It was shown that 10 scallops per sample would be sufficient to predict with 95% certainty if DA levels in the area/lot were twofold below or above the regulatory limit for the highest reported coefficient of variance (CV) of 1.06. To predict with 95% certainty for levels between 15 and 27 mg DA/kg, a pooled sample of more than 30 scallops would have to be tested.
- Published
- 2021
28. Ciguatoxin-like toxicity distribution in flesh of amberjack (Seriola spp.) and dusky grouper (Epinephelus marginatus)
- Author
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María José Ramos-Sosa, Natalia García-Álvarez, Andres Sanchez-Henao, Daniel Padilla, Freddy Silva Sergent, Ana Gago-Martínez, Jorge Diogène, María José Caballero, Antonio Fernández, Fernando Real, Producció Animal, and Aigües Marines i Continentals
- Subjects
Biochemistry ,General Environmental Science - Abstract
Ciguatoxins (CTXs) are marine neurotoxins that cause ciguatera poisoning (CP), mainly through the consumption of fish. The distribution of CTXs in fish is known to be unequal. Studies have shown that viscera accumulate more toxins than muscle, but little has been conducted on toxicity distribution in the flesh, which is the main edible part of fish, and the caudal muscle is also most commonly targeted for the monitoring of CTXs in the Canary Islands. At present, whether this sample is representative of the toxicity of an individual is undisclosed. This study aims to assess the distribution of CTXs in fish, considering different muscle samples, the liver, and gonads. To this end, tissues from four amberjacks (Seriola spp.) and four dusky groupers (Epinephelus marginatus), over 16.5 kg and captured in the Canary Islands, were analyzed by neuroblastoma-2a cell-based assay. Flesh samples were collected from the extraocular region (EM), head (HM), and different areas from the fillet (A-D). In the amberjack, the EM was the most toxic muscle (1.510 CTX1B Eq·g−1), followed by far for the caudal section of the fillet (D) (0.906 CTX1B Eq·g−1). In the dusky grouper flesh samples, D and EM showed the highest toxicity (0.279 and 0.273 CTX1B Eq·g−1). In both species, HM was one of the least toxic samples (0.421 and 0.166 CTX1B Eq·g−1). The liver stood out for its high CTX concentration (3.643 and 2.718 CTX1B Eq·g−1), as were the gonads (1.620 and 0.992 CTX1B Eq·g−1). According to these results, the caudal muscle next to the tail is a reliable part for use in determining the toxicity of fish flesh to guarantee its safe consumption. Additionally, the analysis of the liver and gonads could provide further information on doubtful specimens, and be used for CTX monitoring in areas with an unknown prevalence of ciguatera. info:eu-repo/semantics/publishedVersion
- Published
- 2023
29. Evaluation of the shucking of certain species of scallops contaminated with domoic acid with a view to the production of edible parts meeting the safety requirements foreseen in the Union legislation
- Author
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European Commission, Schrenk, Dieter [0000-0002-7717-5533], Bignami, Margherita [0000-0002-1525-6864], Bodin, Laurent [0000-0001-5671-3139], Del Mazo, Jesús [0000-0003-3269-3895], Grasl-Kraupp, Bettina [0000-0003-4889-6531], Hogstrand, Christer [0000-0001-7545-6975], Leblanc, Jean-Charles [0000-0003-2872-3414], Nielsen, Elsa [0000-0002-6874-2575], Ntzani, Evangelia [0000-0003-3712-4181], Petersen, Annette [0000-0003-3996-2701], Sand, Salomon [0000-0002-3360-0534], Schwerdtle, Tanja [0000-0002-4873-7488], Vleminckx, Christiane [0000-0002-9928-1601], Gago Martínez, Ana [0000-0001-5178-2338], Gerssen, Arjen [0000-0003-4271-1516], Tubaro, Aurelia [0000-0003-2773-2589], Cascio, Claudia [0000-0002-3810-4134], Cortiñas Abrahantes, José [0000-0002-4805-9429], Hoogenboom, Laurentius (Ron) [0000-0002-8913-5328], EFSA CONTAM Panel, Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, Del Mazo, Jesús, Grasl-Kraupp, Bettina, Hogstrand, Christer, Chipman, Kevin James, Leblanc, Jean-Charles, Nebbia, Carlo Stefano, Nielsen, Elsa, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Schwerdtle, Tanja, Vleminckx, Christiane, Wallace, Heather, Gago Martínez, Ana, Gerssen, Arjen, Tubaro, Aurelia, Cascio, Claudia, Cortiñas Abrahantes, José, Steinkellner, Hans, Hoogenboom, Laurentius (Ron), European Commission, Schrenk, Dieter [0000-0002-7717-5533], Bignami, Margherita [0000-0002-1525-6864], Bodin, Laurent [0000-0001-5671-3139], Del Mazo, Jesús [0000-0003-3269-3895], Grasl-Kraupp, Bettina [0000-0003-4889-6531], Hogstrand, Christer [0000-0001-7545-6975], Leblanc, Jean-Charles [0000-0003-2872-3414], Nielsen, Elsa [0000-0002-6874-2575], Ntzani, Evangelia [0000-0003-3712-4181], Petersen, Annette [0000-0003-3996-2701], Sand, Salomon [0000-0002-3360-0534], Schwerdtle, Tanja [0000-0002-4873-7488], Vleminckx, Christiane [0000-0002-9928-1601], Gago Martínez, Ana [0000-0001-5178-2338], Gerssen, Arjen [0000-0003-4271-1516], Tubaro, Aurelia [0000-0003-2773-2589], Cascio, Claudia [0000-0002-3810-4134], Cortiñas Abrahantes, José [0000-0002-4805-9429], Hoogenboom, Laurentius (Ron) [0000-0002-8913-5328], EFSA CONTAM Panel, Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, Del Mazo, Jesús, Grasl-Kraupp, Bettina, Hogstrand, Christer, Chipman, Kevin James, Leblanc, Jean-Charles, Nebbia, Carlo Stefano, Nielsen, Elsa, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Schwerdtle, Tanja, Vleminckx, Christiane, Wallace, Heather, Gago Martínez, Ana, Gerssen, Arjen, Tubaro, Aurelia, Cascio, Claudia, Cortiñas Abrahantes, José, Steinkellner, Hans, and Hoogenboom, Laurentius (Ron)
- Abstract
EFSA was asked by the European Commission to provide information on the levels of domoic acid (DA) in whole scallops that would ensure that levels in edible parts are below the regulatory limit after shucking. This should include five species of scallops. In addition, EFSA was asked to recommend the number of scallops to be used in an analytical sample. To address these questions, EFSA received suitable data on DA for only one scallop species, Pecten maximus, i.e. data on pooled samples of edible and non-edible parts. A large part of the concentration levels was above the limit of quantification (LOQ) and only these data were used for the assessment. Shucking in most cases resulted in a strong decrease in the toxin levels. Statistical analysis of the data showed that levels in whole scallops should not exceed 24 mg DA/kg, 59 mg DA/kg and 127 mg DA/kg to ensure that levels in, respectively, gonads, muscle and muscle plus gonads are below the regulatory limit of 20 mg DA/kg with 99% certainty. Such an analysis was not possible for the other scallop species. In the absence of data from member states, published data of variations between scallops were used to calculate the sample size to ensure a 95% correct prediction on whether the level in scallops in an area or lot is correctly predicted to be compliant/non-compliant. It was shown that 10 scallops per sample would be sufficient to predict with 95% certainty if DA levels in the area/lot were twofold below or above the regulatory limit for the highest reported coefficient of variance (CV) of 1.06. To predict with 95% certainty for levels between 15 and 27 mg DA/kg, a pooled sample of more than 30 scallops would have to be tested.
- Published
- 2021
30. In Silico Simulations and Functional Cell Studies Evidence Similar Potency and Distinct Binding of Pacific and Caribbean Ciguatoxins
- Author
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Raposo-García, Sandra, Castro, David, Lence, Emilio, Estévez, Pablo, Leão, José Manuel, González-Bello, Concepción, Gago-Martínez, Ana, Louzao, M. Carmen, Vale, Carmen, and Botana, Luis M.
- Abstract
Graphical Abstract:
- Published
- 2023
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31. Emerging Marine Biotoxins
- Author
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Arjen Gerssen and Ana Gago-Martínez
- Subjects
n/a ,Medicine - Abstract
The emergence of marine biotoxins in geographical areas where they have never been reported before is a concern of considerable impact on seafood contamination, and consequently, on public health [...]
- Published
- 2019
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32. An Attempt to Characterize the Ciguatoxin Profile in Seriola fasciata Causing Ciguatera Fish Poisoning in Macaronesia
- Author
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Pablo Estevez, David Castro, Ana Pequeño-Valtierra, José M. Leao, Oscar Vilariño, Jorge Diogène, and Ana Gago-Martínez
- Subjects
ciguatera fish poisoning ,macaronesia ,caribbean ciguatoxins ,LC-MS/MS ,N2a ,Medicine - Abstract
Ciguatera Fish Poisoning is a worldwide concern caused by the consumption of fish contaminated with ciguatoxins not only in endemic regions in the Pacific Ocean or the Caribbean Sea but also in emerging areas of Macaronesia on the eastern Atlantic. The recent emergence of these toxins in other coastal areas worldwide, prompted the need for the characterization of the risk in these areas. This Ciguatera Fish Poisoning risk has been recently identified as a potential threat in subtropical areas of the Atlantic coast and scientific efforts are being focused in the identification and confirmation of the toxins involved in this potential risk. Neuroblastoma cell assay has been widely used for the evaluation of the toxicity in several marine biotoxin groups, and found to be a very useful tool for toxicity screening. LC-MS/MS has been also used for confirmatory purposes although the main limitation of the advances on LC-MS/MS development is due to commercial unavailability of reference materials and hampers method implementation and validation or even confirmation of the ciguatoxins (CTXs) responsible for the toxic profiles. While neuroblastoma cell assay (N2a) is typically used for toxicity screening as mentioned above, being necessary to confirm this N2a toxicity by LC-MS/MS, this study is designed using N2a as a tool to confirm the toxicity of the fractions obtained corresponding to potential CTXs analogues according to the analysis by LC-MS/MS. With this aim, an amberjack sample (Seriola fasciata) from Selvagen Islads (Portugal) and implicated in Ciguatera Fish Poisoning was analyzed by LC-MS/MS and Caribbean Ciguatoxins were found to be mainly responsible for the toxicity. N2a was used in this work as a tool to help in the confirmation of the toxicity of fractions obtained by HPLC. Caribbean Ciguatoxin-1 was found as the main analogue responsible for the N2a toxicity while three Caribbean Ciguatoxin-1 (C-CTX1) metabolites which contribute to the total toxicity were also identified.
- Published
- 2019
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33. In silico simulations and functional cell studies evidence similar potency and distinct binding of Pacific and Caribbean ciguatoxins
- Author
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Raposo-Garcia, Sandra, primary, Castro, David, additional, Lence, Emilio, additional, Estevez, Pablo, additional, Leão, José Manuel, additional, Gonzalez-Bello, Concepción, additional, Gago-Martínez, Ana, additional, Louzao, M.Carmen, additional, Vale, Carmen, additional, and Botana, Luis M, additional
- Published
- 2022
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- View/download PDF
34. Preparation of Ciguatoxin Reference Materials from Canary Islands (Spain) and Madeira Archipelago (Portugal) Fish
- Author
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Castro, David, primary, Estévez, Pablo, additional, Leao-Martins, José Manuel, additional, Dickey, Robert W., additional, García-Álvarez, Natalia, additional, Real, Fernando, additional, Costa, Pedro Reis, additional, and Gago-Martínez, Ana, additional
- Published
- 2022
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- View/download PDF
35. New Insights into the Occurrence and Toxin Profile of Ciguatoxins in Selvagens Islands (Madeira, Portugal)
- Author
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Pedro Reis Costa, Pablo Estevez, David Castro, Lucía Soliño, Neide Gouveia, Carolina Santos, Susana Margarida Rodrigues, José Manuel Leao, and Ana Gago-Martínez
- Subjects
ciguatera fish poisoning ,gambierdiscus ,seafood safety ,C-CTX-1 ,Medicine - Abstract
Ciguatoxins (CTXs), endemic from tropical and subtropical regions of the Pacific and Indian Ocean and the Caribbean Sea, have caused several human poisonings during the last decade in Europe. Ciguatera fish poisonings (CFP) in Madeira and Canary Islands appear to be particularly related with consumption of fish caught close to Selvagens Islands, a Portuguese natural reserve composed of three small islands that harbor high fish biomass. In this study, fish specimens considered as potential vectors of CTXs were caught in Madeira and Selvagens archipelagos for toxins determination via sensitive liquid chromatography with tandem mass spectrometry detection (LC⁻MS/MS). CTXs were found in most of the fish samples from Selvagens and none from Madeira. Caribbean ciguatoxin-1 (C-CTX1) was the only toxin congener determined, reaching the highest value of 0.25 µg C-CTX1 kg−1 in a 4.6 kg island grouper (Mycteroperca fusca). This study indicates that a diversity of fish from different trophic levels contains CTXs, Selvagens appear to be one of the most favorable locations for CTXs food web transfer and finally, this study highlights the need of further research based on intensive environmental and biological sampling on these remote islands.
- Published
- 2018
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- View/download PDF
36. In silico simulations and functional cell studies evidence similar potency and distinct binding of pacific and caribbean ciguatoxins
- Author
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Universidade de Santiago de Compostela. Centro de Investigación en Química Biolóxica e Materiais Moleculares, Universidade de Santiago de Compostela. Departamento de Enxeñaría Química, Universidade de Santiago de Compostela. Departamento de Farmacia e Tecnoloxía Farmacéutica, Raposo García, Sandra, Castro Alonso, David Miguel, Lence Quintana, Emilio José, Estévez Bastos, Pablo, Leão, José Manuel, González Bello, Concepción, Gago Martínez, Ana, Louzao Ojeda, María Carmen, Botana López, Luis Miguel, Universidade de Santiago de Compostela. Centro de Investigación en Química Biolóxica e Materiais Moleculares, Universidade de Santiago de Compostela. Departamento de Enxeñaría Química, Universidade de Santiago de Compostela. Departamento de Farmacia e Tecnoloxía Farmacéutica, Raposo García, Sandra, Castro Alonso, David Miguel, Lence Quintana, Emilio José, Estévez Bastos, Pablo, Leão, José Manuel, González Bello, Concepción, Gago Martínez, Ana, Louzao Ojeda, María Carmen, and Botana López, Luis Miguel
- Abstract
Ciguatoxins (CTX) cause ciguatera poisoning, which is the most common reported human food poisoning related to natural marine toxins. Pacific ciguatoxins are the most abundant and studied CTX analogues; however, the growing distribution of Caribbean analogues and the limited data available on their biological effects make necessary to re-evaluate their relative potency. For decades, the guidelines established by regulatory agencies have assumed that the potency of the Caribbean CTXs were tenfold lower than the Pacific CTXs. We present here an integrated study involving Neuro-2a cells (the method used worldwide to test ciguatoxins), electrophysiological assays, and in silico simulations that evidence the similar cytotoxicity of Caribbean and Pacific ciguatoxins and their asymmetry binding within sodium channels. The binding mode of the toxins was first explored by molecular docking using the GOLD program and the resulting binary complexes were further studied by Molecular Dynamics simulation studies using the molecular mechanics force field AMBER. The simulation studies explain their distinct impact on the activation potential of the channel as experimentally observed and provide a detailed picture of the effects caused by these toxins on an atomic scale
- Published
- 2022
37. First Case of Brevetoxicosis Linked to Rough-Toothed Dolphin (Steno bredanensis) Mass-Mortality Event in Eastern Central Atlantic Ocean: A Climate Change Effect?
- Author
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Fernández, Antonio, primary, Sierra, Eva, additional, Arbelo, Manuel, additional, Gago-Martínez, Ana, additional, Leao Martins, Jose Manuel, additional, García-Álvarez, Natalia, additional, Bernaldo de Quiros, Yara, additional, Arregui, Marina, additional, Vela, Ana Isabel, additional, and Díaz-Delgado, Josue, additional
- Published
- 2022
- Full Text
- View/download PDF
38. Intravenous Ibuprofen for Treatment of Post-Operative Pain: A Multicenter, Double Blind, Placebo-Controlled, Randomized Clinical Trial.
- Author
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Andrea Gago Martínez, Blanca Escontrela Rodriguez, Antonio Planas Roca, and Alberto Martínez Ruiz
- Subjects
Medicine ,Science - Abstract
BACKGROUND:Non-steroidal anti-inflammatory drugs are often used as components of multimodal therapy for postoperative pain management, but their use is currently limited by its side effects. The specific objective of this study was to evaluate the efficacy and safety of a new formulation of intravenous (IV) ibuprofen for the management of postoperative pain in a European population. METHODS AND FINDINGS:A total of 206 patients from both abdominal and orthopedic surgery, were randomly assigned in 1:1 ratio to receive 800 mg IV-ibuprofen or placebo every 6 hours; all patients had morphine access through a patient controlled analgesia pump. The primary outcome measure was median morphine consumption within the first 24 hours following surgery. The mean±SEM of morphine requirements was reduced from 29,8±5,25 mg to 14,22±3,23 mg (p = 0,015) and resulted in a decrease in pain at rest (p = 0,02) measured by Visual Analog Scale (VAS) from mean±SEM 3.34±0,35 to 0.86±0.24, and also in pain during movement (p = 0,02) from 4.32±0,36 to 1.90±0,30 in the ibuprofen treatment arm; while in the placebo group VAS score at rest ranged from 4.68±0,40 to 2.12±0,42 and during movement from 5.66±0,42 to 3.38±0,44. Similar treatment-emergent adverse events occurred across both study groups and there was no difference in the overall incidence of these events. CONCLUSIONS:Perioperative administration of IV-Ibuprofen 800 mg every 6 hours in abdominal surgery patient's decreases morphine requirements and pain score. Furthermore IV-Ibuprofen was safe and well tolerate. Consequently we consider appropriate that protocols for management of postoperative pain include IV-Ibuprofen 800 mg every 6 hours as an option to offer patients an analgesic benefit while reducing the potentially risks associated with morphine consumption. TRIAL REGISTRATION:EU Clinical Trials Register 2011-005007-33.
- Published
- 2016
- Full Text
- View/download PDF
39. In silico simulations and functional cell studies evidence similar potency and distinct binding of pacific and caribbean ciguatoxins
- Author
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Sandra Raposo-García, David Castro, Emilio Lence, Pablo Estévez, José Manuel Leão, Concepción González-Bello, Ana Gago-Martínez, M. Carmen Louzao, Carmen Vale, Luis M. Botana, Universidade de Santiago de Compostela. Centro de Investigación en Química Biolóxica e Materiais Moleculares, Universidade de Santiago de Compostela. Departamento de Enxeñaría Química, and Universidade de Santiago de Compostela. Departamento de Farmacia e Tecnoloxía Farmacéutica
- Subjects
Ciguatoxins ,Toxicity ,Health, Toxicology and Mutagenesis ,Public Health, Environmental and Occupational Health ,Sodium channels ,Molecular modeling ,Ciguatera poisoning ,Pollution ,Water Science and Technology - Abstract
Ciguatoxins (CTX) cause ciguatera poisoning, which is the most common reported human food poisoning related to natural marine toxins. Pacific ciguatoxins are the most abundant and studied CTX analogues; however, the growing distribution of Caribbean analogues and the limited data available on their biological effects make necessary to re-evaluate their relative potency. For decades, the guidelines established by regulatory agencies have assumed that the potency of the Caribbean CTXs were tenfold lower than the Pacific CTXs. We present here an integrated study involving Neuro-2a cells (the method used worldwide to test ciguatoxins), electrophysiological assays, and in silico simulations that evidence the similar cytotoxicity of Caribbean and Pacific ciguatoxins and their asymmetry binding within sodium channels. The binding mode of the toxins was first explored by molecular docking using the GOLD program and the resulting binary complexes were further studied by Molecular Dynamics simulation studies using the molecular mechanics force field AMBER. The simulation studies explain their distinct impact on the activation potential of the channel as experimentally observed and provide a detailed picture of the effects caused by these toxins on an atomic scale Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. The research leading to these results has received funding from the following FEDER-co-funded grants. From Conselleria de Cultura, Educacion e Ordenación Universitaria, Xunta de Galicia, GRC (ED431C 2021/01, ED431C 2021/29, and the Centro singular de investigación de Galicia accreditation 2019–2022 ED431G 2019/03). From European Union Interreg AlertoxNet EAPA-317-2016, Interreg Agritox EAPA-998-2018, and H2020 778069-EMERTOX, and the EUROCIGUA project: “Risk Characterization of Ciguatera Fish Poisoning in Europe” GP/EFSA/AFSCO/2015/03, co-funded by the European Food Safety Authority (EFSA). From Ministerio de Ciencia e Innovación PID2020-115010RB-I00/AEI/10.13039/501100011033. David Castro (D.C.) financial support for the PhD studies was obtained through EUROCIGUA project: Risk characterization of Ciguatera Fish Poisoning in Europe, framework partnership agreement GP/EFSA/AFSCO/2015/03, co-funded by the EFSA. Pablo Estevez (P.E.) acknowledges financial support from the Xunta de Galicia (Regional Government, Spain) under grant ED481A-2018/207 SI
- Published
- 2022
40. Preliminary Results on the Evaluation of the Occurrence of Tetrodotoxin Associated to Marine Vibrio spp. in Bivalves from the Galician Rias (Northwest of Spain)
- Author
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Jose Manuel Leão, Antonio Lozano-Leon, Jorge Giráldez, Óscar Vilariño, and Ana Gago-Martínez
- Subjects
tetrodotoxin ,Vibrio ,NRPS ,PKS ,HILIC-LC-MS/MS ,bivalve molluscs ,Biology (General) ,QH301-705.5 - Abstract
Tetrodotoxins (TTX) are a potent group of natural neurotoxins putatively produced by symbiotic microorganisms and affecting the aquatic environment. These neurotoxins have been recently found in some species of bivalves and gastropods along the European Coasts (Greece, UK, and The Netherlands) linked to the presence of high concentrations of Vibrio, in particular Vibrio parahaemolyticus. This study is focused on the evaluation of the presence of Vibrio species and TTX in bivalves (mussels, oysters, cockles, clams, scallops, and razor clams) from Galician Rias (northwest of Spain). The detection and isolation of the major Vibrio spp. and other enterobacterial populations have been carried out with the aim of screening for the presence of the pathways genes, poliketide synthase (PKS) and non-ribosomal peptide synthetase (NRPS) possibly involved in the biosynthesis of these toxins. Samples containing Vibrio spp. were analyzed by biochemical (API20E-galery) and genetic tests (PCR-RT). These samples were then screened for TTX toxicity by a neuroblastoma cell-based assay (N2a) and the presence of TTX was further confirmed by LC-MS/MS. TTX was detected in two infaunal samples. This is the first confirmation of the presence of TTX in bivalve molluscs from the Galician Rias.
- Published
- 2018
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41. Ciguatoxin Detection in Flesh and Liver of Relevant Fish Species from the Canary Islands
- Author
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Ramos-Sosa, María José, primary, García-Álvarez, Natalia, additional, Sanchez-Henao, Andres, additional, Silva Sergent, Freddy, additional, Padilla, Daniel, additional, Estévez, Pablo, additional, Caballero, María José, additional, Martín-Barrasa, José Luís, additional, Gago-Martínez, Ana, additional, Diogène, Jorge, additional, and Real, Fernando, additional
- Published
- 2022
- Full Text
- View/download PDF
42. Toxicity screening of a Gambierdiscus australes strain from the Western Mediterranean sea and identification of a novel maitotoxin analogue
- Author
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Philipp Hess, José Manuel Leão-Martins, Manoella Sibat, Ana Gago-Martínez, Jorge Diogène, Robert W. Dickey, Pablo Estevez, David Castro, Angels Tudó, Producció Animal, and Aigües Marines i Continentals
- Subjects
Aquatic Organisms ,LC-HRMS ,Ciguatera ,Ciguatoxin ,QH301-705.5 ,3206.11 Toxicidad de Los Alimentos ,Pharmaceutical Science ,Zoology ,010402 general chemistry ,01 natural sciences ,Article ,Gambierdiscus australes ,ciguatera poisoning ,Structure-Activity Relationship ,chemistry.chemical_compound ,Mediterranean sea ,Drug Discovery ,Mediterranean Sea ,medicine ,Animals ,14. Life underwater ,Biology (General) ,LC-MS/MS ,Pharmacology, Toxicology and Pharmaceutics (miscellaneous) ,3105 Peces y Fauna Silvestre ,Maitotoxin ,Strain (chemistry) ,biology ,Oxocins ,010401 analytical chemistry ,maitotoxin ,Dinoflagellate ,MS ,biology.organism_classification ,medicine.disease ,LC-MS ,0104 chemical sciences ,N2a ,2302.90 Bioquímica de Alimentos ,chemistry ,Toxicity ,Dinoflagellida ,Marine Toxins ,ciguatoxin - Abstract
Dinoflagellate species of the genera Gambierdiscus and Fukuyoa are known to produce ciguatera poisoning-associated toxic compounds, such as ciguatoxins, or other toxins, such as maitotoxins. However, many species and strains remain poorly characterized in areas where they were recently identified, such as the western Mediterranean Sea. In previous studies carried out by our research group, a G. australes strain from the Balearic Islands (Mediterranean Sea) presenting MTX-like activity was characterized by LC-MS/MS and LC-HRMS detecting 44-methyl gambierone and gambieric acids C and D. However, MTX1, which is typically found in some G. australes strains from the Pacific Ocean, was not detected. Therefore, this study focuses on the identification of the compound responsible for the MTX-like toxicity in this strain. The G. australes strain was characterized not only using LC-MS instruments but also N2a-guided HPLC fractionation. Following this approach, several toxic compounds were identified in three fractions by LC-MS/MS and HRMS. A novel MTX analogue, named MTX5, was identified in the most toxic fraction, and 44-methyl gambierone and gambieric acids C and D contributed to the toxicity observed in other fractions of this strain. Thus, G. australes from the Mediterranean Sea produces MTX5 instead of MTX1 in contrast to some strains of the same species from the Pacific Ocean. No CTX precursors were detected, reinforcing the complexity of the identification of CTXs precursors in these regions. European Food Safety Authority | Ref. GP/EFSA/AFSCO/2015/03 Xunta de Galicia | Ref. ED481A-2018/207 Generalitat de Catalunya | Ref. CERCA
- Published
- 2021
43. Uma atualização sobre ciguatoxinas e toxicidade semelhante ao CTX em peixes de diferentes níveis tróficos das Ilhas Selvagens (NE Atlantic, Madeira, Portugal)
- Author
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José Manuel Leão-Martins, Viriato Timóteo, Ana Gago-Martínez, Pablo Estevez, Lucía Soliño, Carolina Santos, Pedro Reis Costa, Susana Margarida Rodrigues, Jorge Diogène, David Castro, Neide Gouveia, Producció Animal, and Aigües Marines i Continentals
- Subjects
Gambierdiscus ,Ciguatoxin ,Ciguatera ,Health, Toxicology and Mutagenesis ,ved/biology.organism_classification_rank.species ,3206.11 Toxicidad de Los Alimentos ,Zoology ,Toxicology ,Article ,Ciguatoxins ,Species Specificity ,Bodianus ,Hogfish ,Barracuda ,medicine ,Animals ,Atlantic Ocean ,3105 Peces y Fauna Silvestre ,Trophic level ,ciguatera ,Islands ,Portugal ,biology ,ved/biology ,Fishes ,Ciguatera Poisoning ,Seriola ,biology.organism_classification ,medicine.disease ,2301.03 Análisis Cromatográfico ,Seafood safety ,ciguatoxins ,Diplodus cervinus ,Selvagens Islands ,seafood safety ,Medicine - Abstract
The Selvagens Islands, which are a marine protected area located at the southernmost point of the Portuguese maritime zone, have been associated with fish harboring ciguatoxins (CTX) and linked to ciguatera fish poisonings. This study reports the results of a field sampling campaign carried out in September 2018 in these remote and rarely surveyed islands. Fifty-six fish specimens from different trophic levels were caught for CTX-like toxicity determination by cell-based assay (CBA) and toxin content analysis by liquid chromatography with tandem mass spectrometry (LC-MS/MS). Notably, high toxicity levels were found in fish with an intermediate position in the food web, such as zebra seabream (Diplodus cervinus) and barred hogfish (Bodianus scrofa), reaching levels up to 0.75 µg CTX1B equivalent kg−1. The LC-MS/MS analysis confirmed that C-CTX1 was the main toxin, but discrepancies between CBA and LC-MS/MS in D. cervinus and top predator species, such as the yellowmouth barracuda (Sphyraena viridis) and amberjacks (Seriola spp.), suggest the presence of fish metabolic products, which need to be further elucidated. This study confirms that fish from coastal food webs of the Selvagens Islands represent a high risk of ciguatera, raising important issues for fisheries and environmental management of the Selvagens Islands. European Food Safety Authority | Ref. GP/EFSA/AFSCO/2015/03 Fundação para a Ciência e a Tecnologia | Ref. PTDC/CTA-AMB/30557/2017 Fundação para a Ciência e a Tecnologia | Ref. UID/Multi/04326/2020 Xunta de Galicia | Ref. ED481A-2018/207 Generalitat de Catalunya | Ref. CERCA
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- 2021
44. Instrumental Methods for Paralytic Shellfish Toxins
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Ben-Gigirey, Begoña, primary, Turner, Andrew David, additional, and Gago-Martínez, Ana, additional
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- 2015
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45. Development of a new magnetic beads-based immunoprecipitation strategy for proteomics analysis
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Molares Vila, A., Rupérez Pérez de Arrilucea, P., Caso Peláez, E., and Gago-Martínez, A.
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- 2010
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46. Characterisation of ciguatoxins
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Manoella Sibat, Deborah Castro, Philipp Hess, Ana Gago-Martínez, C. Barrios, José Manuel Leão, and Pablo Estevez
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0303 health sciences ,03 medical and health sciences ,Ciguatoxin ,010401 analytical chemistry ,Contaminated fish tissue reference materials ,Fractionation ,Biology ,01 natural sciences ,Ciguatera toxins ,Purification ,030304 developmental biology ,0104 chemical sciences - Abstract
The primary objective of this specific grant was to characterize the risk associated to Ciguatera Poisoning (CP) in the EU by developing a sensitive methodology of LC-MS/MS. The preparation of reference materials including the main ciguatoxins (CTXs) responsible for the contamination was considered the secondary objective to facilitate the implementation of the LC-MS/MS methods in the EU laboratories to characterize this emerging risk. C-CTX1 has been identified by LC-MS/MS, and further confirmed by LC-HRMS, as the main responsible for the CTX toxicity in the samples from the areas selected for this study. The low concentrations levels of CTXs found on the samples evaluated has been a key limitation for the completion of the objectives of this specific grant (SG), being necessary to establish contingency plans, not only to overcome the problems of sensitivity that might compromise the confirmation of the toxic profiles, but also to accomplish the task of preparing reference materials. The contingency plans involved the development of two complementary LC-MS/MS approaches, as well as a methodological approach combiningLC-MS/MS, Neuroblastoma cell assay and chromatographic fractionations (HPLC and GPC) to characterize the toxins present in the contaminated extracts. This approach has been also used for the preparation of reference materials in order to confirm the presence of the C-CTX1 in both pure solutions of C-CTX1 and Fish Tissue Reference materials (FTRM) containing C-CTX1. The LC-MS/MS analysis of Dinoflagellates samples (Gambierdiscus and Fukuyoa sp) allowed to confirm the lack of correlation between the CTXs contamination and the fish samples from the areas were these dinoflagellates were collected. In these samples, the toxicity was attributed to several Maitotoxins analogues as well as gambieric acids C and D, Gambierone, 44-methyl gambierone, and gambieroxide that were identified by LC-HRMS with varying degrees of confirmation in strains of Gambierdiscus and Fukuyoa from the Mediterranean Sea and North East Atlantic Ocean.
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- 2021
47. An Update on Ciguatoxins and CTX-like Toxicity in Fish from Different Trophic Levels of the Selvagens Islands (NE Atlantic, Madeira, Portugal)
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Costa, Pedro Reis, primary, Estévez, Pablo, additional, Soliño, Lucía, additional, Castro, David, additional, Rodrigues, Susana Margarida, additional, Timoteo, Viriato, additional, Leao-Martins, José Manuel, additional, Santos, Carolina, additional, Gouveia, Neide, additional, Diogène, Jorge, additional, and Gago-Martínez, Ana, additional
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- 2021
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48. Differential changes of neuroactive amino acids in samples obtained from discrete rat brain regions after systemic administration of saxitoxin
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Cianca, Rosa Carmina Cervantes, Barbosa, Rafael Durán, Faro, Lilian Rosana Ferreira, Adan, Lucia Vidal, Gago-Martínez, Ana, and Pallares, Miguel Alfonso
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- 2009
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49. High levels of tetrodotoxin (TTX) in trumpet shell Charonia lampas from the Portuguese Coast
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Susana Margarida Rodrigues, Estefanía Pereira Pinto, José Manuel Leão, Pedro Reis Costa, Lucía Soliño, Ana Gago-Martínez, and Jorge Giráldez
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biology ,Marine biotoxins ,Health, Toxicology and Mutagenesis ,lcsh:R ,3206.11 Toxicidad de Los Alimentos ,Zoology ,lcsh:Medicine ,Tetrodotoxin ,Toxicology ,biology.organism_classification ,Seafood safety ,Neuroblastoma cell ,chemistry.chemical_compound ,HILIC-MS/MS ,2302.90 Bioquímica de Alimentos ,chemistry ,seafood safety ,marine biotoxins ,Evisceration (autotomy) ,2301 Química Analítica ,Charonia lampas ,tetrodotoxin - Abstract
Tetrodotoxin (TTX) is a potent neurotoxin, considered an emerging toxin in Europe where recently a safety limit of 44 µg TTX kg−1 was recommended by authorities. In this study, three specimens of the large gastropod trumpet shell Charonia lampas bought in a market in south Portugal were analyzed using a neuroblastoma cell (N2a) based assay and by LC-MS/MS. N2a toxicity was observed in the viscera of two individuals analyzed and LC-MS/MS showed very high concentrations of TTX (42.1 mg kg−1) and 4,9-anhydroTTX (56.3 mg kg−1). A third compound with m/z 318 and structurally related with TTX was observed. In the edible portion, i.e., the muscle, toxin levels were below the EFSA recommended limit. This study shows that trumpet shell marine snails are seafood species that may reach the markets containing low TTX levels in the edible portion but containing very high levels of TTX in non-edible portion raising concerns regarding food safety if a proper evisceration is not carried out by consumers. These results highlight the need for better understanding TTX variability in this gastropod species, which is critical to developing a proper legal framework for resources management ensuring seafood safety, and the introduction of these gastropods in the markets. Fundação para a Ciência e a Tecnologia | Ref. (UID/Multi/04326/2020)
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- 2021
50. Risk characterisation of ciguatera poisoning in Europe
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Canals, Ana, primary, Martínez, Carmen Varela, additional, Diogène, Jorge, additional, Gago‐Martínez, Ana, additional, Cebadera‐Miranda, Laura, additional, de Vasconcelos, Filipa Melo, additional, Gómez, Inmaculada León, additional, Sánchez, Elena Vanessa Martínez, additional, Alférez, Rocío Carmona, additional, Núñez, Domingo, additional, Friedemann, Miriam, additional, Oleastro, Mónica, additional, Boziaris, Ioannis, additional, Rambla, Maria, additional, Campàs, Mònica, additional, Fernández, Margarita, additional, Andree, Karl, additional, Tudó, Angels, additional, Rey, Maria, additional, Sagristà, Nuria, additional, Aguayo, Paloma, additional, Leonardo, Sandra, additional, Castan, Vanessa, additional, Costa, Jose Luis, additional, Real, Fernando, additional, García, Natalia, additional, Rodríguez, Antonio Jesús Fernández, additional, León, Francisco Martín, additional, Costa, Pedro Reis, additional, Soliño, Lucia, additional, Rodrigues, Susana, additional, Silva, Alexandra, additional, Godinho, Lia, additional, Marques, Antònio, additional, Kanari, Popi, additional, Stavroulakis, Georgios, additional, Papageorgiou, Georgios, additional, Chrysanthou, Elina, additional, Aligizaki, Katerina, additional, Nikolopoulou, Iliana, additional, Kaliwra, Agoritsa, additional, Leão, J.M., additional, Estevez, P., additional, Castro, D., additional, Barrios, C., additional, Hess, P., additional, and Sibat, M., additional
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- 2021
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