News Column

Studies from Institute of Biomedical Engineering Further Understanding of Biomedicine and Biomedical Engineering

May 7, 2014

By a News Reporter-Staff News Editor at Biotech Week -- A new study on Biotechnology is now available. According to news reporting from Montreal, Canada, by NewsRx journalists, research stated, "This review paper describes the past, present and future design of therapeutic magnetic carriers (TMMC) being guided in the vascular network using a novel technique known as magnetic resonance navigation (MRN). This targeting method is an extension of magnetic resonance imaging (MRI) technologies."

The news correspondents obtained a quote from the research from the Institute of Biomedical Engineering, "MRN, based on magnetic gradient variation, aims to navigate carriers in real-time along a pre-planned trajectory from their injection site to a targeted area. As such, this approach should minimize systemic distribution of toxic agents loaded into the carriers and improve therapeutic efficacy by delivering a larger proportion of the drug injected. MRN-compatible carriers (shape, material, size, magnetic properties, biocompatibility) have to be designed by taking into consideration the constraints of the medical task and MRN. In the past, as a proof of concept of MRN feasibility, a 1.5-mm ferromagnetic bead was guided in the artery of a living swine with a clinical MRI system. Present day, to aim at medical applications, TMMC have been designed for targeted liver chemoembolization by MRN. TMMC are 50-mu m biodegradable microparticles loaded with iron-cobalt nanoparticles and doxorubicin as an antitumor drug. TMMC were selectively guided to the right or left liver lobes in a rabbit model with a clinical MRI scanner upgraded with steering coils."

According to the news reporters, the research concluded: "To treat human liver tumor, according to the theoretical MRN model, future TMMC design should take into consideration magnetic nanoparticle properties (nature and loading), MRN platform performances (gradient amplitude and rise time) and vascular hepatic network properties (blood flow velocity and geometry) to optimize the carrier diameter for efficient chemoembolization."

For more information on this research see: Therapeutic Magnetic Microcarriers Guided by Magnetic Resonance Navigation for Enhanced Liver Chemoembilization: A Design Review. Annals of Biomedical Engineering, 2014;42(5):929-939. Annals of Biomedical Engineering can be contacted at: Springer, 233 Spring St, New York, NY 10013, USA. (Springer -; Annals of Biomedical Engineering -

Our news journalists report that additional information may be obtained by contacting P. Pouponneau, Ecole Polytechnic, Inst Biomed Engn, Montreal, PQ H3C 3A7, Canada. Additional authors for this research include G. Bringout and S. Martel (see also Biotechnology).

Keywords for this news article include: Biotechnology, Quebec, Canada, Montreal, North and Central America

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Source: Biotech Week

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