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The NR1 N-methyl-d-aspartate subunit and brain-derived neurotrophic factor in temporal lobe epilepsy hippocampus : a comparison of patients with and without coexisting psychiatric symptoms
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Toro, Carla T., Hallak, Jaime E., Dunham, Jason S., Leite, João P., Sakamoto, Américo C., Guarnieri, Ricardo, Fong, Vivian and Deakin, John F. W. (2007) The NR1 N-methyl-d-aspartate subunit and brain-derived neurotrophic factor in temporal lobe epilepsy hippocampus : a comparison of patients with and without coexisting psychiatric symptoms. Epilepsia, 48 (12). doi:10.1111/j.1528-1167.2007.01194.x ISSN 0013-9580.
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Official URL: http://dx.doi.org/10.1111/j.1528-1167.2007.01194.x
Abstract
Purpose: The glutamate N-methyl-d-aspartate (NMDA) receptor and the neurotrophin brain-derived neurotrophic factor have been implicated in the pathophysiology of schizophrenia and depression. Since these psychiatric disorders are common in temporal lobe epilepsy (TLE), a comparison of TLE patients with and without coexisting psychiatric symptoms may be useful to unravel pathophysiologic mechanisms for psychosis or depression.
Methods: We used immunoautoradiography to assess the NR1 NMDA receptor subunit and brain-derived neurotrophic factor in resected TLE hippocampus.
Results: No changes relative to comparison controls were found for TLE patients with schizophrenia-like psychosis or depression. Increased NR1 was found in the dentate molecular layer in the dysphoria group and unmedicated depressed patients.
Conclusions: An increase in NR1 protein in the dentate molecular layer suggests an upregulation of NMDA receptors in granule cells in TLE patients with dysphoria and depression. This finding is compatible with the theory that increased NMDA receptor function is involved in the pathogenesis of depression and that antidepressants may act by opposing this mechanism.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Health Sciences Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School |
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Journal or Publication Title: | Epilepsia | ||||||||
Publisher: | Wiley-Blackwell Publishing Ltd. | ||||||||
ISSN: | 0013-9580 | ||||||||
Official Date: | December 2007 | ||||||||
Dates: |
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Volume: | 48 | ||||||||
Number: | 12 | ||||||||
DOI: | 10.1111/j.1528-1167.2007.01194.x | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access |
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