Neurological Sciences

, Volume 22, Issue 1, pp 49–50

Blockade of subthalamic glutamatergic activity corrects changes in neuronal metabolism and motor behavior in rats with nigrostriatal lesions

Authors

  • F. Blandini
    • C. Mondino Neurological Institute, Via Palestro 3, Pavia, Italy
  • J. T. Greenamyre
    • Departments of Neurology and Pharmacology, Emory University Atlanta, GA, USA
  • R. Fancellu
    • University of Insubria, Varese, Italy
  • G. Nappi
    • C. Mondino Neurological Institute, Via Palestro 3, Pavia, Italy

DOI: 10.1007/s100720170041

Cite this article as:
Blandini, F., Greenamyre, J., Fancellu, R. et al. Neurol Sci (2001) 22: 49. doi:10.1007/s100720170041

Abstract

We infused – for four weeks – a selective antagonist of the NMDA receptor, MK-801, into the subthalamic nucleus of rats bearing an evolving nigrostriatal lesion. The aim was to block the subthalamic overactivity resulting from the dopaminergic striatal denervation. The nigrostriatal lesion caused metabolic activation – increased activity of the mitochondrial enzyme succinate dehydrogenase – of basal ganglia nuclei, ipsilaterally to the lesion, along with contralateral rotational behaviour. These phenomena were effectively counteracted by the blockade of glutamatergic transmission at the subthalamic level. Pharmacological manipulation of the STN, through selective drugs capable of modulating glutamatergic transmission, may therefore represent a valuable tool for the treatment of PD.

Copyright information

© Springer-Verlag Italia 2001