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Journal of Clinical Laboratory Analysis logoLink to Journal of Clinical Laboratory Analysis
. 2008 Jul 11;22(4):246–253. doi: 10.1002/jcla.20250

Detection of ciguatoxin in fish tissue using sandwich ELISA and neuroblastoma cell bioassay

Cara Empey Campora 1,, Jan Dierking 2, Clyde S Tamaru 3, Yoshitsugi Hokama 1, Douglas Vincent 4
PMCID: PMC6648948  PMID: 18623118

Abstract

The applicability of a new enzyme‐linked immunoassay (ELISA) for detecting ciguatoxin (CTX) in fish tissue was evaluated by testing three fish species commonly implicated in ciguatera fish poisoning in Hawaii. A total of 164 individual almaco jack (Seriola rivoliana) and greater amberjack (S. dumerili) and a total of 175 individuals of the blue‐spotted grouper (Cephalopholis argus) were caught at various locations in the Hawaiian Islands. Muscle tissue from each individual was assessed for the presence of CTX using two methods: a semi‐quantitative ELISA that was recently developed for detecting picogram levels of CTX in fish extract and a neuroblastoma (NB) cell assay commonly used to screen for marine toxins in fish. Results of the tests were highly correlated, with the ELISA indicating the presence of CTX in 9.4% of all fish samples, and the NB assay indicating toxicity in 6.8% of the fish samples. We conclude that the ELISA produces reliable and accurate results that are consistent with those provided by the accepted NB assay and that the ELISA has potential for future applications in screening fish populations for CTX. J. Clin. Lab. Anal. 22:246–253, 2008. © 2008 Wiley‐Liss, Inc.

Keywords: ciguatoxin, ciguatera fish poisoning, roi, kahala, ELISA

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