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Abstract #4884

Engineering novel functional brain imaging contrast agents via iron oxide encapsulation in human red blood cells

Elizabeth Jane Fear1,2, Antonella Antonelli1, Pasant Abdalla1, Elisa Zamboni3, Marie-Christine Labarthe-Last2, Victoria Annis2, Simon Benedict Duckett2, Mauro Magnani1, and Aneurin James Kennerley2,4
1Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy, 2Centre for Hyperpolarisation in Magnetic Resonance (CHyM), Chemistry, University of York, York, United Kingdom, 3Psychology, University of York, York, United Kingdom, 4Sport and Exercise Science, Institute of Science, Manchester Metropolitan University, Manchester, United Kingdom

Synopsis

Keywords: Contrast Agent, Contrast Agent, red blood cells, Super Paramagnetic Iron Oxide NanoparticlesWe have developed a next generation, safe, personalised iron-based contrast agent (CA) for empowering functional Magnetic Resonance Imaging (fMRI). Our proprietary method uses state-of-the-art red blood cell (RBC) encapsulation technology to engineer biocompatible super-paramagnetic CAs able to withstand rapid clearance from the bloodstream by macrophages (as part of the mononuclear phagocytic/reticuloendothelial system). The agent is validated in a multi-modal (concurrent fMRI and intrinsic optical imaging) preclinical rat model as a novel CA for the mapping of cerebral blood volume (CBV) in response to somatosensory stimulation, providing a non-BOLD alternative for accurate, high-resolution mapping of brain function.

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