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  Morphine withdrawal increases expression of GABA(A) receptor epsilon subunit mRNA in locus coeruleus neurons

Heikkila, A., Echenko, O., Uusi-Oukari M, Sinkkonen, S., & Korpi, E. (2001). Morphine withdrawal increases expression of GABA(A) receptor epsilon subunit mRNA in locus coeruleus neurons. Neuroreport, 12(13), 2981.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-E33A-9 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-E33B-7
Genre: Journal Article

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Heikkila, AT, Author
Echenko, O1, Author              
Uusi-Oukari M, Sinkkonen, ST, Author
Korpi, ER, Author
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1Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497798              

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 Abstract: An increase in the activity of brain stem locus coeruleus noradrenergic neurons has been hypothesised to be a major factor accounting for opiate withdrawal symptoms. These neurons are under GABAergic inhibition. Their GABA(A) receptors have unique pharmacological properties, most likely due to the enriched expression of GABA(A) receptor subtypes containing novel epsilon and straight theta subunits. Using in situ hybridisation of cryostat sections, we now report a significant increase in the epsilon subunit mRNA expression after precipitation of opioid withdrawal by naloxone. Similar changes were detected in tyrosine hydroxylase mRNA expression. The results suggest increased formation of unique GABA(A) receptor subtype(s) in the locus coeruleus neurons during increased neuronal activity.

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 Dates: 2001
 Publication Status: Published in print
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 Identifiers: BibTex Citekey: 4333
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Title: Neuroreport
Source Genre: Journal
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Pages: - Volume / Issue: 12 (13) Sequence Number: - Start / End Page: 2981 Identifier: -