Your browser doesn't support javascript.
loading
Nanogels as prospective Biomaterial: Radio-induced Synthesis, Characterization, and Biological Assays / Los nanogeles como biomateriales prospectivos: síntesis radioinducida, caracterización y ensayos biológicos
Ges Naranjo, Adrian A; Viltres Cobas, Herlys; García Hernández, Liudy; Ponce Rey, Liena; Aguilera Corrales, Yuri; Luz, Isabelle; Botelho, Katyelle; Fontes, Wagner.
  • Ges Naranjo, Adrian A; University of Havana. Higher Institute of Technology and Applied Sciences. CU
  • Viltres Cobas, Herlys; Legaria-Unit National Polytechnic Institute. Centre of Research in Applied Science and Advanced Technology. Ciudad de México. CU
  • García Hernández, Liudy; Centre for Technological Applications and Nuclear Development Havana. CU
  • Ponce Rey, Liena; University of Havana. Faculty of Biology. CU
  • Aguilera Corrales, Yuri; University of Havana. Higher Institute of Technology and Applied Sciences. CU
  • Luz, Isabelle; University of Brasilia. Laboratory of Biochemistry and Protein Chemistry. Brasilia DF. BR
  • Botelho, Katyelle; University of Havana. Faculty of Biology. CU
  • Fontes, Wagner; University of Brasilia. Laboratory of Biochemistry and Protein Chemistry. Brasilia DF. BR
Rev. cuba. invest. bioméd ; 40(supl.1): e1176, 2021. tab, graf
Article in English | LILACS, CUMED | ID: biblio-1289469
ABSTRACT
Nowadays, there is a growing interest in biodegradable polymers-based materials due to their diverse application in the biomedical field. Most studied systems involve biocompatible micro and nanodevices, such as liposomes, dendrimer, micelles or polymeric nanogels. The use of Radiation Technology, specifically gamma radiation, to produce micro and nanogels raises the possibility to obtain higher purity products, an important feature for biomedical and pharmaceutical applications. The radio-induced synthesis, characterization, cytotoxicity evaluation, and immunological response of nanogels are described in this study. Nanogel synthesis was performed in the absence of oxygen using aqueous polyvinylpyrrolidone solutions. Crosslinking reactions were carried out at 25 °C in a gamma irradiation chamber with a 60Co source. Nanogels properties were analysed by Scanning Electron Microscopy, Attenuated Total Reflection-Fourier Transform Spectroscopy, Dynamic Light Scattering, and Viscosimetry. The cytotoxicity and immunological response were evaluated by MTT test and analysis of the neutrophil respiratory burst. The results showed that nanogels formation strongly depends on the total absorbed dose. The nanogels have an elliptical shape and their chemical structure is similar to the initial polymer. The nanogels are biocompatible and promote a low-intensity neutrophil activation, similar to the well-characterized biomaterial TiO2, suggesting their potential biomedical uses(AU)
RESUMEN
En la actualidad existe un interés creciente en los materiales biodegradables basados en polímeros, debido a sus diversas aplicaciones en la esfera de la biomedicina. En la mayoría de los sistemas estudiados participan micro- y nanodispositivos biocompatibles, tales como liposomas, dendrímeros, micelas o nanogeles poliméricos. El uso de la tecnología de radiaciones, en particular de radiaciones gamma, para producir micro- y nanogeles, eleva la posibilidad de obtener productos de mayor pureza, un rasgo importante con vistas a su aplicación biomédica y farmacéutica. El estudio describe la síntesis radioinducida, caracterización, evaluación de la citotoxicidad y respuesta inmunológica de los nanogeles. La síntesis de los nanogeles se realizó en ausencia de oxígeno, usando soluciones acuosas de polivinilpirrolidona. Las reacciones de entrecruzamiento se realizaron a 25 ºC en cámara de irradiación gamma con una fuente de 60Co. Las propiedades de los nanogeles se analizaron mediante microscopía electrónica de barrido, espectroscopia por transformada de Fourier total atenuada, dispersión dinámica de luz y viscosimetría. La citotoxicidad y la respuesta inmunológica se evaluaron mediante prueba MTT y análisis del estallido respiratorio de neutrófilos. Los resultados muestran que la formación de nanogeles depende en gran medida de la dosis total absorbida. Los nanogeles tienen forma elíptica y su estructura química es similar a la del polímero inicial. Los nanogeles son biocompatibles y promueven una activación de neutrófilos de baja intensidad similar al bien caracterizado material TiO2, lo que sugiere usos biomédicos potenciales(AU)
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Gamma Rays / Nanogels Limits: Female / Humans / Male Language: English Journal: Rev. cuba. invest. bioméd Journal subject: Medicine Year: 2021 Type: Article Affiliation country: Brazil / Cuba Institution/Affiliation country: Centre for Technological Applications and Nuclear Development Havana/CU / Legaria-Unit National Polytechnic Institute/CU / University of Brasilia/BR / University of Havana/CU

Similar

MEDLINE

...
LILACS

LIS

Full text: Available Index: LILACS (Americas) Main subject: Gamma Rays / Nanogels Limits: Female / Humans / Male Language: English Journal: Rev. cuba. invest. bioméd Journal subject: Medicine Year: 2021 Type: Article Affiliation country: Brazil / Cuba Institution/Affiliation country: Centre for Technological Applications and Nuclear Development Havana/CU / Legaria-Unit National Polytechnic Institute/CU / University of Brasilia/BR / University of Havana/CU