Your browser doesn't support javascript.
loading
Molecularly imprinted nanoparticle-based assay (MINA): Potential application for the detection of the neurotoxin domoic acid.
Quezada, Camila; Vera, Myleidi; Barraza, Luis F; García, Yadiris; Pereira, Eduardo D.
Afiliação
  • Quezada C; Departamento de Química Analítica e Inorgánica Facultad de Ciencias Químicas, Universidad de Concepción, Casilla 160-C, Concepción, Chile.
  • Vera M; Departamento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción, Casilla 160-C, Concepción, Chile.
  • Barraza LF; Departamento de Ciencias Químicas, Facultad de Ciencias Exactas, Universidad Andres Bello, Sede Concepción, Autopista Concepción-Talcahuano, 7100, Talcahuano, Chile.
  • García Y; Departamento de Química Analítica e Inorgánica Facultad de Ciencias Químicas, Universidad de Concepción, Casilla 160-C, Concepción, Chile; Instituto de Química de Recursos Naturales, Universidad de Talca, Avenida Lircay S/N, Talca, Chile. Electronic address: ygarcia@udec.cl.
  • Pereira ED; Departamento de Química Analítica e Inorgánica Facultad de Ciencias Químicas, Universidad de Concepción, Casilla 160-C, Concepción, Chile. Electronic address: epereira@udec.cl.
Anal Chim Acta ; 1181: 338887, 2021 Oct 09.
Article em En | MEDLINE | ID: mdl-34556224
Domoic acid (DA) is a natural amino acid and water-soluble neurotoxic biotoxin primarily produced by the microalgae Pseudo-nitzschia. DA can cause poisoning in humans and a wide variety of marine species. In this work, a molecularly imprinted nanoparticle-based assay (MINA) was developed as an alternative to enzyme-linked immunosorbent assay (ELISA) for selective detection of DA. In contrast with ELISA, MINA uses molecularly imprinted polymer nanoparticles (nanoMIPs) as plastic antibodies due to its higher stability and lower production costs. In this work, dihydrokainic acid (DKA) was used as a dummy template because this molecule is structurally similar to DA but less toxic. The developed MINA had a high linear response for DKA and DA, showing detection limits of 2.12 nmol L-1 and 4.32 nmol L-1, respectively. Additionally, q-RMN studies demonstrated that DKA - nanoMIPs were selective for DKA, since they presented the best association parameters with a high loading load capacity of 175% and an association efficiency of 18%. No cross-reactivity towards 1, 3, 5 - pentanetricarboxylic acid was observed. These results suggest that MINA could be a more robust, more sensitive, and less expensive alternative to ELISA. The assay developed with DKA - nanoMIPs has strong potential for the detection of domoic acid in real samples of red tide.
Assuntos
Palavras-chave
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Nanopartículas / Impressão Molecular Tipo de estudo: Diagnostic_studies Limite: Humans Idioma: En Revista: Anal Chim Acta Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Chile País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Nanopartículas / Impressão Molecular Tipo de estudo: Diagnostic_studies Limite: Humans Idioma: En Revista: Anal Chim Acta Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Chile País de publicação: Holanda