Somatostatin- and neuropeptide Y-synthesizing neurones in the fascia dentata of humans with temporal lobe epilepsy
Sundstrom, L.E., Brana, C., Gatherer, M., Mepham, J. and Rougier, A. (2001) Somatostatin- and neuropeptide Y-synthesizing neurones in the fascia dentata of humans with temporal lobe epilepsy. Brain, 124, (4), 688-697. (doi:10.1093/brain/124.4.688).
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We used in situ hybridization techniques to study the distribution of neurones synthesizing somatostatin mRNA and neuropeptide Y mRNA in the hilar region of the hippocampal formation of patients with temporal lobe epilepsy. In the dentate gyrus, somatostatin mRNA- and neuropeptide Y mRNA-synthesizing neurones were found to be exclusively located within the hilar region. Unlike animal models, no ectopic expression of either peptide was found in principal cells. The numbers of hilar interneurones expressing somatostatin mRNA and neuropeptide Y mRNA were compared with the degree of hilar cell loss determined by immunohistochemistry against neuronal nuclear antigen. The numbers of somatostatin and neuropeptide Y mRNA-synthesizing neurones varied considerably between patients, but both were found to be highly correlated to the total number of neuronal nuclear antigen-immunoreactive hilar neurones. These results suggest that loss of somatostatin and neuropeptide Y interneurones occurs in proportion to overall hilar cell loss, and therefore the hypothesis of a selective loss of these interneurones in temporal lobe epilepsy seems unlikely.
|Subjects:||R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry|
|Divisions:||University Structure - Pre August 2011 > School of Medicine > Clinical Neurosciences
|Date Deposited:||27 Apr 2006|
|Last Modified:||27 Mar 2014 18:16|
|Contact Email Address:||email@example.com|
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