Faster ciguatoxin extraction methods for toxicity screening.
(max. 6, American spelling): marine biotoxins
Ciguatera
Extraction
Fish poisoning
Mass spectrometry
Neuro-2a bioassay
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
17 Sep 2024
17 Sep 2024
Historique:
received:
19
06
2024
accepted:
10
09
2024
medline:
18
9
2024
pubmed:
18
9
2024
entrez:
17
9
2024
Statut:
epublish
Résumé
Ciguatera poisoning (CP) is a severe global public health problem caused by the consumption of seafood products contaminated with ciguatoxins (CTXs). The growing demand for seafood products requires high-throughput testing for CTX-susceptible seafood, however complex extraction and slow cleanup methods inhibit this goal. Herein, several methods for extracting CTXs from fish tissue were established and compared; these methods are sensitive, specific, and valid while achieving higher sample extraction throughput than currently established protocols. The trial fish material was generated from multiple species, with different physical conditions (wet and freeze-dried tissue), and naturally contaminated with various CTXs (i.e., CTX-1B, CTX-3C, and C-CTX-1), thus ensuring these methods are robust and broadly applicable. The extraction methods used were based on mechanical maceration with acetone or methanol or enzymatic digestion followed by acetone and ethyl acetate extraction. Crude extracts were investigated for CTX-like toxicity using an in vitro mouse neuroblastoma (N2a) cell-based assay (CBA). Among the three methods, there was no significant difference in toxin estimates (p = 0.219, two-way ANOVA), indicating their interchangeability. For speed (> 16 samples/day), accuracy (100%), and CTX analog retention confirmation by liquid chromatography-tandem mass spectrometry (LC‒MS/MS), the preferred extraction methods were both methanol and enzyme-based. All extraction methods post hoc confirmation of CTX analogs successfully met international seafood market-based CTX contaminant guidance. These methods can drastically increase global CTX screening capabilities and subsequently relieve sample processing bottlenecks, inhibiting environmental and human health-based CTX analysis.
Identifiants
pubmed: 39289443
doi: 10.1038/s41598-024-72708-1
pii: 10.1038/s41598-024-72708-1
doi:
Substances chimiques
Ciguatoxins
11050-21-8
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
21715Informations de copyright
© 2024. The Author(s).
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