Advances in Detecting Ciguatoxins in Fish

Area of Science:

• Marine Biology
• Toxicology
• Food Safety

Background:

• Ciguatera fish poisoning (CFP) is the most prevalent marine biotoxin foodborne illness globally.
• It results from consuming fish and invertebrates contaminated with potent ciguatoxins, which are neurotoxins affecting sodium channels.
• CFP symptoms are often misdiagnosed, and no specific medical treatment is currently available.

Purpose of the Study:

• To review existing methods for detecting and quantifying ciguatoxins in seafood.
• To discuss the advantages and limitations of various analytical techniques.
• To identify future challenges in ciguatoxin detection for mitigating CFP risks.

Main Methods:

• Review of historical and contemporary analytical methods for ciguatoxin detection.
• Inclusion of in vivo assays, cell-based assays, receptor binding assays, immunoassays, electrochemical methods, and LC-MS.
• Critical evaluation of sensitivity, specificity, and quantitative capabilities of each method.

Main Results:

• A range of analytical methods have been developed over the past century for ciguatoxin identification and quantification.
• Each method presents unique advantages and limitations regarding sensitivity, cost, and applicability.
• Highly sensitive and quantitative tests are essential for reliable detection and risk mitigation.

Conclusions:

• Accurate and sensitive detection of ciguatoxins is paramount for preventing CFP outbreaks.
• Continued development and refinement of analytical techniques are necessary to address challenges in ciguatoxin analysis.
• Future research should focus on improving the speed, sensitivity, and accessibility of detection methods.