| Literature DB >> 18196202 |
Mariangela Pierantozzi1, Maria Giuseppina Palmieri, Salvatore Galati, Paolo Stanzione, Antonella Peppe, Domenicantonio Tropepi, Livia Brusa, Antonio Pisani, Vincenzo Moschella, Maria Grazia Marciani, Paolo Mazzone, Alessandro Stefani.
Abstract
Bilateral peduncolopontine nucleus (PPN) and subthalamic nucleus (STN) deep brain stimulation (DBS) was performed in six-advanced Parkinson's disease (PD) patients. We report the effect of both PPN-DBS (25 Hz) and STN-DBS (185 Hz) on patient spinal reflex excitability by utilizing the soleus-Hoffman reflex (HR) threshold. Compared to controls (n = 9), patients showed an increase of HR-threshold, which was scarcely affected by levodopa, but significantly reduced by DBS. In particular, we found that PPN-DBS alone, or plus STN-DBS induced a complete recovery of HR-threshold up to control values. The HR-threshold changes, although do not allow to investigate the contribution of specific intraspinal pathways, suggest that PPN may play a key-role in modulating spinal excitability in PD possibly by improving the basal ganglia-brainstem descending system activity.Entities:
Mesh:
Year: 2008 PMID: 18196202 DOI: 10.1007/s00702-007-0001-8
Source DB: PubMed Journal: J Neural Transm (Vienna) ISSN: 0300-9564 Impact factor: 3.575