Abstract：
UNLABELLED:Based on preclinical findings, cellular therapy has become a promising therapeutic approach for neonatal hypoxia-ischemia (HI). However, before translation into the clinical setting, new and effective routes of cell delivery must be determined. Intra-arterial (IA) delivery is an attractive route of cellular administration but has never been used in neonatal HI rats. AIMS:In this study, we investigated the feasibility of IA transplantation of human umbilical cord blood (HUCB) mononuclear cells for the treatment of long-term behavior dysfunction and brain lesion after neonatal HI. MAIN METHODS:Seven-day-old rats were subjected to a HI model and the animals received HUCB mononuclear cells into the left common carotid artery 24 h after HI insult. KEY FINDINGS:At 9 weeks post-HI, intra-arterially transplanted HUCB mononuclear cells significantly improved learning and long-term spatial memory impairments when evaluated by the Morris water maze paradigm. There was no effect of neonatal HI insult or IA procedure on body weight and on motor coordination and balance when evaluated by the accelerating rotarod test. Cellular transplantation by the IA route did not restore neonatal HI-induced brain damage according to stereological volume assessment. Furthermore, HUCB mononuclear cells were tracked in the injured brain and peripheral organs of HI transplanted-rats by nested polymerase chain reaction analysis at different time points. SIGNIFICANCE:Our findings contribute to the translational knowledge of cell based-therapy in neonatal HI and demonstrate for the first time that IA transplantation into rat pups is a feasible route for cellular delivery and prevents long-term cognitive deficits induced by experimental neonatal HI.
journal_name
Life Scijournal_title
Life sciencesauthors
Greggio S,de Paula S,Azevedo PN,Venturin GT,Dacosta JCdoi
10.1016/j.lfs.2013.10.017subject
Has Abstractpub_date
2014-02-06 00:00:00pages
33-9issue
1-2eissn
0024-3205issn
1879-0631pii
S0024-3205(13)00619-Xjournal_volume
96pub_type
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