Galderisi U.,The Second University of Naples |
Galderisi U.,Institute of Proteins Biochemistry IBP |
Galderisi U.,Temple University |
Peluso G.,Institute of Proteins Biochemistry IBP |
And 8 more authors.
Stem Cell Research | Year: 2013
Neural stem cells (NSCs) raised the hope for cell-based therapies in human neurodevelopmental and neurodegenerative diseases. Current research strategies aim to isolate, enrich, and propagate homogeneous populations of neural stem cells. Unfortunately, several concerns with NSC cultures currently may limit their therapeutic promise. Exhaustion of growth factors and/or their uncontrolled release with burst and fall in their concentration may greatly affect the in vitro behavior of NSCs. In this context, we investigate whether a device containing heparan sulfate (HS), which is a co-factor in growth factor-mediated cell proliferation and differentiation, could potentiate and prolong the delivery of fibroblast growth factor-2 (FGF-2) and thus improve in vitro NSC cultivation. We demonstrated that NSCs cultivated in media with a controlled release of FGF-2 from a polyelectrolyte polymer showed a higher proliferation rate, and reduced apoptosis and senescence. In these experimental conditions NSCs preserve their stemness properties for a longer period of time compared with controls. Also of interest is that cell fate properties are conserved as well. The controlled release of FGF-2 reduced the level of oxidative stress and this is associated with a lower level of damaged DNA. This result may explain the reduced level of senescence and apoptosis in NSCs cultivated in the presence of hydrogel-releasing FGF-2. © 2012 .
Fusco F.R.,Santa Lucia Foundation at the European Center for Brain Research |
Pompa A.,University of Rome Tor Vergata |
Bernardi G.,Santa Lucia Foundation at the European Center for Brain Research |
Bernardi G.,University of Rome Tor Vergata |
And 8 more authors.
Journal of Child Neurology | Year: 2010
PANDAS (pediatric autoimmune neuropsychiatry disorders associated with streptococcal infections) is a rare clinical syndrome characterized by the presence of tics, Tourette syndrome, obsessive-compulsive disorder, or chorea in the context of an immediately precedent streptococcal infection. In this report, we describe the case of an 11-year-old boy who developed PANDAS with severe choreic movements. The criteria for PANDAS diagnosis were met. Moreover, serum antibrain antibodies were present. The patient was initially treated with tetrabenazine 12.5 mg twice daily with remission of the neurological symptoms. Subsequently, the patient underwent tonsillectomy and has been asymptomatic since, with antistreptolysin O titer levels in range. ©uthor(s) 2010.