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• W3110823161 abstract "Introduction: Arsenic is an environmental toxic present worldwide. In men and animals, various organs and tissues are targets of its deleterious effects including those of the immune system. Objective: To determine acute arsenic toxicity in tissues and target cells of Balb/c mice using an in vivo methodology. Materials and methods: We injected Balb/c mice intraperitoneally with 9.5 or 19 mg/kg of sodium arsenite (NaAsO2), or an equivalent volume of physiological solution as a control (with 3 per experimental group). After 30 minutes, the animals were sacrificed to obtain spleen, thymus, liver, kidneys, and blood. We determined arsenic, polyphenols, and iron concentrations in each sample and we evaluated the oxidative markers (peroxides, advanced products of protein oxidation, and free sulfhydryl groups). In splenocytes from the spleen, cell viability and mitochondrial potential were also determined. Results: The exposure to an acute dose of NaAsO2 reduced the mitochondrial function of splenocytes, which resulted in cell death. Simultaneously, the confirmed presence of arsenic in spleen samples and the resulting cytotoxicity occurred with a decrease in polyphenols, free sulfhydryl groups, and an alteration in the content and distribution of iron, but did not increase the production of peroxides. Conclusion: These findings provide scientific evidence about changes occurring in biomarkers involved in the immunotoxicity of arsenic and offer a methodology for testing possible treatments against the deleterious action of this compound on the immune system.Introducción. El arsénico es un tóxico ambiental ampliamente diseminado en todo el mundo. En hombres y animales, diversos órganos y tejidos son blancos de sus efectos deletéreos, entre ellos, el los del sistema inmunológico. Objetivo. Determinar la intoxicación aguda por arsénico en tejidos y células diana de ratones Balb/c in vivo. Materiales y métodos. Se aplicó una inyección intraperitoneal de 9,5 o 19 mg/kg de arsenito de sodio (NaAsO2) o un volumen equivalente de solución fisiológica como control, en ratones Balb/c con 3 por cada grupo experimental. Tras media hora, los animales fueron sacrificados y se extrajeron bazos, timos, hígados, riñones y sangre. En cada muestra, se determinó la concentración de arsénico, polifenoles y hierro, y también, se evaluaron marcadores oxidativos, como peróxidos, productos avanzados de oxidación proteica y grupos sulfhidrilos libres. En los esplenocitos obtenidos del bazo, se determinaron la viabilidad celular y el potencial mitocondrial. Resultados. La dosis aguda inyectada de NaAsO2 redujo la función mitocondrial de los esplenocitos, lo que derivó en muerte celular. La presencia confirmada de arsénico en las muestras de bazo y la citotoxicidad resultante, produjeron disminución de los polifenoles y de los grupos sulfhidrilos libres, y alteraron el contenido y la distribución del hierro, pero no se aumentó la producción de peróxidos. Conclusión. Estos hallazgos aportan evidencia científica sobre los cambios en biomarcadores involucrados en la inmunotoxicidad del arsénico y ofrecen, además, una metodología para ensayar potenciales tratamientos frente a la acción deletérea de este compuesto en el sistema inmunológico." @default.
• W3110823161 created "2020-12-21" @default.
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• W3110823161 date "2021-03-19" @default.
• W3110823161 modified "2023-10-18" @default.
• W3110823161 title "Arsenotoxicidad aguda experimental en ratones Balb/c: marcadores orgánicos y compromiso esplénico" @default.
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• W3110823161 doi "https://doi.org/10.7705/biomedica.5485" @default.
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