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Jafari, Sahar; Mair, Lamar O.; Weinberg, Irving N.; Baker-McKee, James; Hale, Olivia; Watson-Daniels, Jamelle; English, Bradley; Stepanov, Pavel Y.; Ropp, Chad; Atoyebi, Olufolasade F.; Sun, Danica
Journal of magnetism and magnetic materials, 01/2019, Letnik: 469Journal Article
•Intra-nasal magnetic delivery was performed to guide magnetic rods to the brain.•Multi-segmented micro magnetic rods were used for magnetic delivery.•Pulling and spinning magnetic fields were applied simultaneously.•Particles were transported by translational and rotational motions.•Pull and drill rods can greatly improve the transport of drugs to the brain. Getting drugs deep into the brain to treat cancers, neurological disease, and behavioral disorders is challenging. In this work, we tried to improve the efficiency of intra-nasal transport into the brain via the cribriform plate using magnetic particles. We and others have used magnetic particles for delivering heat, drugs, and genes. We performed experiments with mouse cadavers that received 250-nm-wide intra-nasal magnetic rods intra-nasally under different combinations of magnetic fields. We found that the application of helical dynamic gradients to the particles (i.e., both rotational and linear) improved transport from the nose into the brain, as compared to linear magnetic gradients alone. On histological examination, no tracks were observed to suggest significant damage to the brain during the transport process. We are currently building a system for testing with live animals, with eventual proposed application to humans.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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