title: Hyaluronan, neural stem cells and tissue reconstruction after acute ischemic stroke.
abstract: Focal stroke is a disabling disease with lifelong sensory, motor and cognitive impairments. Given the paucity of effective clinical treatments, basic scientists are developing novel options for protection of the affected brain and regeneration of lost tissue. Tissue bioengineering and stem/progenitor cell treatments have both been individually pursued for stroke neural repair therapies, with some benefit in tissue recovery. Emerging directions in stroke neural repair approaches combine these two therapies to use biopolymers with stem/progenitor transplants to promote greater cell survival in the transplant and directed delivery of bioactive molecules to the transplanted cells and the adjacent injured tissue. In this review the background literature on a combined use of neural stem/progenitor cells encapsulated in hyaluronan gels is discussed and the way this therapeutic approach can affect the important processes involved in brain tissue reconstruction, such as angiogenesis, axon regeneration, neural differentiation and inflammation is clarified. The glycosaminoglycan hyaluronan can optimize those processes and be employed in a successful neural tissue engineering approach.
authors.affiliation: Department of Neurology; David Geffen School of Medicine at UCLA; Los Angeles, CA USA.
authors.forename: Pouria
authors.initials: P
authors.lastname: Moshayedi
authors.affiliation: Department of Neurology; David Geffen School of Medicine at UCLA; Los Angeles, CA USA.
authors.forename: S Thomas
authors.initials: ST
authors.lastname: Carmichael
mesh_terms: D000818:Animals; D002545:Brain Ischemia / Q000150:complications / Q000473:pathology / Q000628:therapy*; D002454:Cell Differentiation / Q000502:physiology; D006801:Humans; D006820:Hyaluronic Acid / Q000008:administration & dosage* / Q000737:chemistry; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate / Q000737:chemistry; D009416:Nerve Regeneration / Q000502:physiology; D058953:Neural Stem Cells / Q000166:cytology*; D033581:Stem Cell Transplantation / Q000379:methods; D020521:Stroke / Q000150:complications / Q000473:pathology / Q000628:therapy*; D023822:Tissue Engineering / Q000379:methods
chemical_list: D020136:Hydrogel, Polyethylene Glycol Dimethacrylate; D006820:Hyaluronic Acid
keywords: brain; hyaluronan; neural repair; regeneration; stroke