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DOI: 10.1055/s-2006-924325
© Georg Thieme Verlag KG Stuttgart · New York
Clinically Applicable 7-Tesla Magnetic Resonance Visualization of Transplanted Human Adult Stem Cells Labeled with CliniMACS® Nanoparticles
Publication History
Received February 4, 2006
Publication Date:
06 November 2006 (online)
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Abstract
Background: Intra-myocardial transplantation of bone marrow derived cells is currently under clinical evaluation as a therapy for heart failure. A major limitation of all clinical studies for myocardial restoration through cell transfer is the inability to track the fate of the transplanted cells. We present a clinically applicable technique using advanced ultra high-field 7-Tesla (7T) magnetic resonance imaging (MRI) of nanoparticle-labeled transplanted human EPCs in porcine ischemic hearts. Methods: CD133 positive cells were isolated from bone marrow by magnetic bead selection. Positive cells (5 - 8 × 106 cells) were transplanted into porcine ischemic myocardium (n = 8). Control animals (n = 3) received a medium injection. MRI on a 7T scanner was performed to demonstrate the distribution of the EPCs. Results: CD133+ cells were identified on gradient echo images (T1-weighted) within the myocardium 4 weeks after transplantation. Conclusions: Magnetically labeled EPCs transplanted for therapeutic neovascularization or reduction of infarct size in myocardial ischemia can be visualized by MRI at high-field strengths.
Key words
Cardiovascular surgery - myocardial infarction - heart disease - cell transplantation - bio-imaging
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1 * Arjang Ruhparwar, Alireza Ghodsizad and Michael Niehaus contributed equally to this paper. This paper is to be presented at the annual meeting of The German Society for Thoracic and Cardiovascular Surgery 2006 in Hamburg as a permanent poster.
Arjang Ruhparwar
Division of Thoracic and Cardiovascular Surgery
Hannover Medical School
Carl Neuberg-Straße 1
30625 Hannover
Germany
Phone: + 49 51 15 32 65 81
Fax: + 49 51 15 32 54 04
Email: ruhparwar.arjang@mh-hannover.de