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Eur J Pharm Biopharm. 2013 Nov;85(3 Pt B):1183-90. doi: 10.1016/j.ejpb.2013.03.034. Epub 2013 Apr 30.

In vivo administration of VEGF- and GDNF-releasing biodegradable polymeric microspheres in a severe lesion model of Parkinson's disease.

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  • 1NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Vitoria, Spain; Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Vitoria, Spain.


In this work, the neuroregenerative potentials of microencapsulated VEGF, GDNF and their combination on a severely lesioned rat model were compared with the aim of developing a new strategy to treat advanced stages of Parkinson's disease. Both neurotrophic factors were separately encapsulated into polymeric microspheres (MSs) to obtain a continuous drug release over time. The regenerative effects of these growth factors were evaluated using a rotation behaviour test and quantified by the number of surviving TH+cells. The biological activities of encapsulated vascular endothelial growth factor (VEGF) and glial cell line-derived neurotrophic factor (GDNF) were investigated in HUVEC and PC12 cells, respectively. The treatment of 6-OHDA-lesioned rats with GDNF microspheres and with both VEGF and GDNF microspheres resulted in improved results in the rotation behaviour test. Both groups also showed higher levels of neuroregeneration/neuroreparation in the substantia nigra than the control group did. These results were confirmed by the pronounced TH+neuron recovery in the group receiving VEGF+GDNF-MS, demonstrating regenerative effects.

Copyright © 2013 Elsevier B.V. All rights reserved.


6-OHDA; GDNF; Growth factors; Microparticles; PLGA; Parkinson’s disease; VEGF

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