Abstract：
:The primary objective of this study was to test the hypothesis that intravenous administration of autologous bone marrow cells could improve functional recovery after middle cerebral artery occlusion (MCAO) for 45 min in the rat and to determine specific time windows for efficacy. Mononuclear cells from autologous bone marrow were transfected with the LacZ reporter gene, and injected intravenously into rats at 3-72 h after induction of MCAO. Histological analysis of the ischemic lesion at 14 days after transplantation revealed reduced ischemic lesion volume. Lesion volume was 250+/-45 mm(3) (n=6) after MCAO without cell transplantation. Lesions were minimally detected by absence of 2,3,5-triphenyltetrazolium chloride (TTC) staining when bone marrow cells were infused 3 h after lesion induction. Lesions were clearly detected beginning with the 6-h postlesion group and became progressively larger at 12, 24 and 72 h (80+/-25, 140+/-18, and 180+/-22 mm(3), respectively; n=6 for each group). Transplanted LacZ(+) bone marrow cells accumulated extensively in and around the ischemic lesions, and immunohistochemistry suggests some neuronal and glial lineage differentiation. Behavioral testing (Morris water maze and Treadmill stress test) indicated greater functional recovery in the treated group. These findings suggest that early intervention with intravenous administration of autologous mononuclear cells from bone marrow can reduce lesion size in the MCAO model in the rat, and improve functional outcome.
journal_name
Brain Resjournal_title
Brain researchauthors
Iihoshi S,Honmou O,Houkin K,Hashi K,Kocsis JDdoi
10.1016/j.brainres.2003.09.084subject
Has Abstractpub_date
2004-05-08 00:00:00pages
1-9issue
1-2eissn
0006-8993issn
1872-6240pii
S000689930400112Xjournal_volume
1007pub_type
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