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P792: a rapid clearance blood pool agent for magnetic resonance imaging: preliminary results

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Abstract

An original MRI contrast agent, called P792, is described. P792 is a gadolinium macrocyclic compound based on a Gd-DOTA structure substituted by hydrophilic arms. The chemical structure of P792 has been optimized in order to provide (1) a high r1 relaxivity in the clinical field for MRI: 29 mM−1 x s−1 at 60 MHz. (2) a high biocompatibility profile and (3) a high molecular volume: the apparent hydrodynamic volume of P792 is 125 times greater than that of Gd-DOTA. As a result of this high molecular volume, P792 presents an unusual pharmacokinetic profile, as it is a Rapid Clearance Blood Pool Agent (RCBPA) characterized by limited diffusion across the normal endothelium. The original pharmacokinetic properties of this RCBPA are expected to be well suited to MR coronary angiography, angiography, perfusion imaging (stress and rest), and permeability imaging (detection of ischemia and tumor grading). Further experimental imaging studies are ongoing to define the clinical value of this compound.

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Authors and Affiliations

  1. Guerbet, Chemical Research, BP 50400, 95943, Roissy CDG Cedex, France

    Marc Port, Claire Corot, Olivier Rousseaux, Isabelle Raynal, Ludovic Devoldere, Jean-Marc Idée, Anne Dencausse, Soizic Le Greneur, C. Simonot & Dominique Meyer

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  1. Marc Port
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  2. Claire Corot
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  3. Olivier Rousseaux
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  4. Isabelle Raynal
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  10. Dominique Meyer
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Port, M., Corot, C., Rousseaux, O. et al. P792: a rapid clearance blood pool agent for magnetic resonance imaging: preliminary results. MAGMA 12, 121–127 (2001). https://doi.org/10.1007/BF02668093

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  • DOI: https://doi.org/10.1007/BF02668093

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