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REVIEW ARTICLE
Korean J Pediatr 2014 June;57(6) :251-256.
Published online 2014 June 15.       
Mesenchymal stem cells transplantation for neuroprotection in preterm infants with severe intraventricular hemorrhage
So Yoon Ahn, Yun Sil Chang, Won Soon Park
Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
Corresponding Author: Won Soon Park ,Tel: +82-2-3410-3523, Fax: +82-2-3410-0043, Email: wonspark@skku.edu
Copyright © 2014 by The Korean Pediatric Society
ABSTRACT
Severe intraventricular hemorrhaging (IVH) in premature infants and subsequent posthemorrhagic hydrocephalus (PHH) causes significant mortality and life-long neurological complications, including seizures, cerebral palsy, and developmental retardation. However, there are currently no effective therapies for neonatal IVH. The pathogenesis of PHH has been mainly explained by inflammation within the subarachnoid spaces due to the hemolysis of extravasated blood after IVH. Obliterative arachnoiditis, induced by inflammatory responses, impairs cerebrospinal fluid (CSF) resorption and subsequently leads to the development of PHH with ensuing brain damage. Increasing evidence has demonstrated potent immunomodulating abilities of mesenchymal stem cells (MSCs) in various brain injury models. Recent reports of MSC transplantation in an IVH model of newborn rats demonstrated that intraventricular transplantation of MSCs downregulated the inflammatory cytokines in CSF and attenuated progressive PHH. In addition, MSC transplantation mitigated the brain damages that ensue after IVH and PHH, including reactive gliosis, cell death, delayed myelination, and impaired behavioral functions. These findings suggest that MSCs are promising therapeutic agents for neuroprotection in preterm infants with severe IVH.
Keywords: Intracranial hemorrhage | Hydrocephalus | Cell transplantation | Mesenchymal stromal cells | Premature infant
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