Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Editor

Personal info

View

About

Terms

Javascript disabled

Please enable Javascript support in your browser to use this application.

Instructions on how to enable JavaScript on different browsers can be found here: http://www.google.com/support/bin/answer.py?answer=23852.

[edit this page]

Slater, P. et al.

Effects of lesioning basal ganglia nuclei and output pathways on tremorine-induced tremor in rats.

The tremor produced by muscarinic cholinomimetics is believed to originate in the neostriatum but the efferent pathways are unknown. The intensity and frequency of tremor induced by tremorine was measured in the hindlegs of rats with unilateral basal ganglia lesions. A kainic acid lesion of one neostriatum reduced tremor intensity in the contralateral leg (CL). Unilateral electrolesions of the globus pallidus and nucleus accumbens had no effects on tremor. Both entopeduncular and subthalamic nuclei lesions reduced the frequency and intensity of tremorine tremor in the CL leg. The subthalamic lesion also increased tremor intensity and frequency in the ipsilateral leg. Lesions were made in some brain areas that receive basal ganglia efferent projections. Peak tremor intensity and frequency in both legs was greatly reduced by unilateral decortication. Unilateral lesions of the habenula, red nucleus and pedunculopontine nucleus had no effects on tremor intensity but reduced peak tremor frequency. Lesions of the substantia nigra and periaqueductal gray area had no effects on tremor. Unilateral removal of the superior colliculus reduced tremor intensity in both legs. The findings suggest that intensity and frequency of tremor are influenced by different basal ganglia efferent pathways; intensity involves strio-entopeduncular-cortical projections and frequency is determined by projections to midbrain and brainstem. The superior colliculus, with many muscarinic receptors, may be a direct target area for tremorine.[1]

References

Effects of lesioning basal ganglia nuclei and output pathways on tremorine-induced tremor in rats. Slater, P., Dickinson, S.L. J. Neurol. Sci. (1982) [Pubmed]

Annotations and hyperlinks in this abstract are from individual authors of WikiGenes or automatically generated by the WikiGenes Data Mining Engine. The abstract is from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.About WikiGenes Open Access Licence Privacy Policy Terms of Use apsburg

The world's first wiki where authorship really matters (Nature Genetics, 2008). Due credit and reputation for authors. Imagine a global collaborative knowledge base for original thoughts. Search thousands of articles and collaborate with scientists around the globe.