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Biomedical

Automated Patch Clamp for the Detection of Tetrodotoxin in Pufferfish Samples

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Mònica Campàs,

Mònica Campàs

IRTA, Marine and Continental Waters (AMiC) Programme, Ctra. Poble Nou del Delta, km. 5.5, 43540 La Ràpita, Spain


Jaume Reverté,

Jaume Reverté

IRTA, Marine and Continental Waters (AMiC) Programme, Ctra. Poble Nou del Delta, km. 5.5, 43540 La Ràpita, Spain


Àngels Tudó,

Àngels Tudó

Department of Basic Medical Sciences, Universitat Rovira i Virgili, C/Sant Llorenç 21, 43201 Reus, Spain


Mounira Alkassar,

Mounira Alkassar

IRTA, Marine and Continental Waters (AMiC) Programme, Ctra. Poble Nou del Delta, km. 5.5, 43540 La Ràpita, Spain


Jorge Diogène,

Jorge Diogène

IRTA, Marine and Continental Waters (AMiC) Programme, Ctra. Poble Nou del Delta, km. 5.5, 43540 La Ràpita, Spain


Francesc X. Sureda

Francesc X. Sureda

Department of Basic Medical Sciences, Universitat Rovira i Virgili, C/Sant Llorenç 21, 43201 Reus, Spain


  Peer Reviewed

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© attribution CC-BY

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Added on

2024-11-03

Doi: http://dx.doi.org/10.3390/md22040176

Related Subjects
Anatomy
Biochemistry
Epidemiology
Genetics
Neuroscience
Psychology
Oncology
Medicine
Musculoskeletal science
Pediatrics
Pathology
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Abstract

Tetrodotoxin (TTX) is a marine toxin responsible for many intoxications around the world. Its presence in some pufferfish species and, as recently reported, in shellfish, poses a serious health concern. Although TTX is not routinely monitored, there is a need for fast, sensitive, reliable, and simple methods for its detection and quantification. In this work, we describe the use of an automated patch clamp (APC) system with Neuro-2a cells for the determination of TTX contents in pufferfish samples. The cells showed an IC50 of 6.4 nM for TTX and were not affected by the presence of muscle, skin, liver, and gonad tissues of a Sphoeroides pachygaster specimen (TTX-free) when analysed at 10 mg/mL. The LOD achieved with this technique was 0.05 mg TTX equiv./kg, which is far below the Japanese regulatory limit of 2 mg TTX equiv./kg. The APC system was applied to the analysis of extracts of a Lagocephalus sceleratus specimen, showing TTX contents that followed the trend of gonads > liver > skin > muscle. The APC system, providing an in vitro toxicological approach, offers the advantages of being sensitive, rapid, and reliable for the detection of TTX-like compounds in seafood.

Key Questions about TTX Detection in Pufferfish

The article "Automated Patch Clamp for the Detection of Tetrodotoxin in Pufferfish Samples" discusses the application of an automated patch clamp (APC) system using Neuro-2a cells to detect tetrodotoxin (TTX) in pufferfish samples. TTX is a potent marine toxin responsible for numerous intoxications worldwide, and its presence in pufferfish poses significant health risks. The study demonstrates that the APC system can effectively identify TTX content in pufferfish tissues, offering a rapid and reliable method for monitoring this toxin in seafood.

1. What is tetrodotoxin (TTX), and why is its detection important?

TTX is a potent marine neurotoxin found in various marine organisms, including pufferfish. It blocks sodium channels, leading to paralysis and potentially fatal respiratory failure. Detecting TTX is crucial to prevent foodborne poisoning from contaminated seafood.

2. How does the automated patch clamp (APC) system detect TTX in pufferfish samples?

The APC system utilizes Neuro-2a cells, which are sensitive to TTX-induced sodium channel blockade. By measuring changes in ion currents through these channels, the system can quantify TTX levels in pufferfish tissues.

3. What are the advantages of using the APC system for TTX detection?

The APC system offers a rapid, sensitive, and reliable method for detecting TTX in seafood. It allows for high-throughput screening, which is essential for ensuring the safety of seafood products.

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Total 513 513
Show by month Manuscript Video Summary
2025 May 118 118
2025 April 84 84
2025 March 68 68
2025 February 57 57
2025 January 63 63
2024 December 49 49
2024 November 74 74
Total 513 513
Related Subjects
Anatomy
Biochemistry
Epidemiology
Genetics
Neuroscience
Psychology
Oncology
Medicine
Musculoskeletal science
Pediatrics
Pathology
Pharmacology
Physiology
Psychiatry
Primary care
Women and reproductive health
copyright icon

© attribution CC-BY

  • 0

rating
513 Views

Added on

2024-11-03

Doi: http://dx.doi.org/10.3390/md22040176

Related Subjects
Anatomy
Biochemistry
Epidemiology
Genetics
Neuroscience
Psychology
Oncology
Medicine
Musculoskeletal science
Pediatrics
Pathology
Pharmacology
Physiology
Psychiatry
Primary care
Women and reproductive health

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