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- W2021645146 abstract "Tetrodotoxin (TTX) is one of the most potent toxin already isolated, which occurs in a wide range of marine as well as terrestrial animals such as in newts and anurans. In this work, the occurrence of TTX and analogues was examined in three brachycephalid species: Brachycephalus ephippium, B. nodoterga and B. pernix using LC-FLD and LC-MS/MS. In toxicity assay (intra-peritonial injection in mice) B. nodoterga extracts were non-toxic, while B. pernix extract exhibit the highest toxicity among the studied species. Skin showed the highest toxic, followed by the liver. Retention time data in the LC-FLD system indicated the presence of TTX, 4-epiTTX, 4,9-anhydroTTX and TDA, SIM data confirmed the presence of these compounds and revealed other analogs such as 11-norTTX-6(S)-ol, 5-deoxyTTX, 11-deoxyTTX, 11-oxoTTX, 6-epiTTX. Two new components were also identified by mass spectrometry (348 and 330 Da). These unknown compounds have daughter ions similar to TTX, suggesting new putative TTX analogues." @default.
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- W2021645146 date "2005-01-01" @default.
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- W2021645146 title "Further report of the occurrence of tetrodotoxin and new analogues in the Anuran family Brachycephalidae" @default.
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- W2021645146 doi "https://doi.org/10.1016/j.toxicon.2004.09.016" @default.
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