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Respuesta antioxidante de Artemia franciscana al nitroprusiato sódico (SNP)

Authors: Torres Rodríguez, Miguel; Nogués Palenzuela, Álvaro; Trenzado Romero, Cristina Elena; Rufino-Palomares, Eva; Pérez Jiménez, Amalia;

Respuesta antioxidante de Artemia franciscana al nitroprusiato sódico (SNP)

Abstract

De entre todos los contaminantes emergentes, los fármacos suscitan un gran interés científico. El nitroprusiato sódico (SNP), es uno de los cianógenos más utilizados como vasodilatador para el tratamiento de afecciones cardiacas. Debido a su uso generalizado y a la posible contaminación de los ambientes acuáticos asociado a la mala gestión de los residuos farmacológicos, es importante llevar a cabo estudios ecotoxicológicos que ayuden a aclarar su efecto en poblaciones de especies bioindicadoras como es el caso de invertebrados acuáticos. En base a esto, el objetivo del presente ensayo fue evaluar la toxicidad del SNP en el invertebrado acuático Artemia franciscana. Para tal fin, nauplios de Artemia. franciscana fueron sometidos a diferentes concentraciones de SNP (0-3000 µg/mL) durante 24 horas, determinándose los valores de LC20, LC50 y LC80. Para determinar la respuesta antioxidante y detoxificadora de dichos organismos frente al SNP, se cuantificó la actividad de diferentes enzimas implicadas en dicho proceso: Superóxido dismutasa (SOD), catalasa (CAT), Glutatión peroxidasa (GPX), Glutatión reductasa (GR), Glucosa-6-fosfato deshidrogenasa (G6PDH), Glutatión S-transferasa (GST), DT-diaforasa (DTD), así como los niveles de peroxidación lipídica a través del Malondialdehido (MDA) y la actividad antioxidante total (TEAC). Los resultados obtenidos indican la existencia de una correlación positiva entre las distintas concentraciones de SNP empleadas y la actividad de las enzimas GPX, GR, G6PDH y GST, así como para TEAC, lo cual se ha relacionado con un aumento en la capacidad antioxidante y detoxificadora de xenobióticos en dichos organismos frente al SNP. Sin embargo, no se han observado diferencias para SOD, CAT y DTD, así como en los niveles de peroxidación lipídica. Esto podría ser indicativo de que que la administración de SNP produce la inactivación de dichas enzimas y evidencia el efecto dependiente del tiempo que presenta el SNP en la peroxidación lipídica en nauplios de Artemia francicana.

Country
Spain
Keywords

Compuestos cianógenos, compuestos cianógenos, invertebrados acuáticos, Economic biology, Ecology, aquatic invertebrates, Aquatic invertebrates, Cyanogenic compounds, QH705-705.5, Ecotoxicology, cyanogenic compounds, ecotoxicology, G, Invertebrados acuáticos, Ecotoxicología, Geography. Anthropology. Recreation, ecotoxicología, QH540-549.5

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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