Magnetic study on biodistribution and biodegradation of oral magnetic nanostructures in the rat gastrointestinal tract
Martín, M. ; Rodríguez-Nogales, A. ; Garcés, V. ; Gálvez, N. ; Gutiérrez, L. (Universidad de Zaragoza) ; Gálvez, J. ; Rondón, D. ; Olivares, M. ; Dominguez-Vera, J.
Resumen: We have undertaken a magnetic study on the oral biodistribution and biodegradation of nude maghemite nanoparticles of 10 nm average size (MNP) and probiotic bacteria, Lactobacillus fermentum, containing thousands of these same nanoparticles (MNP-bacteria). Using AC magnetic susceptibility measurements of the stomach, small intestine, cecum and large intestine obtained after rat sacrifice, and iron content determination by ICP-OES, we have monitored the biodistribution and biodegradation of the maghemite nanoparticles along the gastrointestinal tract, after oral administration of both MNP and MNP-bacteria. The results revealed that the amount of magnetic nanoparticles accumulated in intestines is sensibly higher when MNP-bacteria were administered, in comparison with MNP. This confirms our initial hypothesis that the use of probiotic bacteria is a suitable strategy to assist the magnetic nanoparticles to overcome the stomach medium, and to achieve their accumulation in intestines. This finding opens doors to different applications. Since iron absorption in humans takes place precisely in the intestines, the use of MNP-bacteria as an iron supplement is a definite possibility. We have actually illustrated how the administration of MNP-bacteria to iron-deficient rats corrects the iron levels after two weeks of treatment.
Idioma: Inglés
DOI: 10.1039/c6nr04678a
Año: 2016
Publicado en: NANOSCALE 8, 32 (2016), 15041-15047
ISSN: 2040-3364
Factor impacto JCR: 7.367 (2016)
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 23 / 275 = 0.084 (2016) - Q1 - T1
Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 13 / 87 = 0.149 (2016) - Q1 - T1
Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 21 / 166 = 0.127 (2016) - Q1 - T1
Categ. JCR: PHYSICS, APPLIED rank: 13 / 147 = 0.088 (2016) - Q1 - T1
Factor impacto SCIMAGO: 2.789 - Nanoscience and Nanotechnology (Q1) - Materials Science (miscellaneous) (Q1)
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CTQ2015-64538-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/RYC-2014-15512
Tipo y forma: Article (PostPrint)
Área (Departamento): Área Química Analítica (Dpto. Química Analítica)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes.
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Idioma: Inglés
DOI: 10.1039/c6nr04678a
Año: 2016
Publicado en: NANOSCALE 8, 32 (2016), 15041-15047
ISSN: 2040-3364
Factor impacto JCR: 7.367 (2016)
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 23 / 275 = 0.084 (2016) - Q1 - T1
Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 13 / 87 = 0.149 (2016) - Q1 - T1
Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 21 / 166 = 0.127 (2016) - Q1 - T1
Categ. JCR: PHYSICS, APPLIED rank: 13 / 147 = 0.088 (2016) - Q1 - T1
Factor impacto SCIMAGO: 2.789 - Nanoscience and Nanotechnology (Q1) - Materials Science (miscellaneous) (Q1)
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CTQ2015-64538-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/RYC-2014-15512
Tipo y forma: Article (PostPrint)
Área (Departamento): Área Química Analítica (Dpto. Química Analítica)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. Exportado de SIDERAL (2020-02-21-13:14:35)
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Record created 2017-07-25, last modified 2020-02-21