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BIODISTRIBUTION OF BONE MARROW MONONUCLEAR CELLS AFTER INTRA-ARTERIAL OR INTRAVENOUS TRANSPLANTATION IN SUBACUTE STROKE PATIENTS
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Aims: To assess the biodistribution of bone marrow mononuclear cells (BMMNC) delivered by different routes in patients with subacute middle cerebral artery ischemic stroke. Patients & methods: This was a nonrandomized, open-label Phase I clinical trial. After bone marrow harvesting, BMMNCs were labeled
with technetium-99m and intra-arterially or intravenously delivered together with the unlabeled cells.
Scintigraphies were carried out at 2 and 24 h after cell transplantation. Clinical follow-up was continued for 6 months. Results: Twelve patients were included, between 19 and 89 days after stroke, and received 1–5 × 108
BMMNCs. The intra-arterial group had greater radioactive counts in the liver and spleen and lower counts in the lungs at 2 and 24 h, while in the brain they were low and similar for both routes. Conclusion: BMMNC labeling with technetium-99m allowed imaging for up to 24 h after intra-arterial or intravenous injection in stroke patients.
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