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1.	Valastro, Barbara, et al. (författare) Expression pattern of JunD after acute or chronic l-DOPA treatment: Comparison with DeltaFosB. 2007 Ingår i: Neuroscience. - : Elsevier BV. - 1873-7544 .- 0306-4522. ; 144:Oct 19, s. 198-207 Tidskriftsartikel (refereegranskat)abstract In this study, we have used 6-hydroxydopamine-lesioned rats to examine changes in striatal junD and fosB/Delta fosB expression induced by acute and chronic treatment with (L)-DOPA (5 and 15 days). Changes at the protein levels were studied using Western immunoblotting while mRNA changes were compared using in situ hybridization histochemistry. We observed a significant increase in the level of Delta FosB proteins after chronic treatment with L-DOPA, an effect that was not observed for JunD proteins. In addition, the upregulation of Delta FosB was already present after an acute treatment but increased upon chronic treatment. By contrast, junD and Delta fosB mRNA were both upregulated significantly above control levels after an acute injection of L-DOPA. In conclusion, this study suggests a differential expression pattern of junD and Delta fosB in a rat model of L-DOPA-induced dyskinesia. The upregulation of Delta FosB protein, but not JunD, is likely to reflect an increased stability of the Delta FosB proteins without ongoing enhanced transcription of the encoding genes. (c) 2006 IBRO. Published by Elsevier Ltd. All rights reserved.

Valastro, Barbara, et al. (författare)
Expression pattern of JunD after acute or chronic l-DOPA treatment: Comparison with DeltaFosB.
2007
Ingår i: Neuroscience. - : Elsevier BV. - 1873-7544 .- 0306-4522. ; 144:Oct 19, s. 198-207
Tidskriftsartikel (refereegranskat)abstract
- In this study, we have used 6-hydroxydopamine-lesioned rats to examine changes in striatal junD and fosB/Delta fosB expression induced by acute and chronic treatment with (L)-DOPA (5 and 15 days). Changes at the protein levels were studied using Western immunoblotting while mRNA changes were compared using in situ hybridization histochemistry. We observed a significant increase in the level of Delta FosB proteins after chronic treatment with L-DOPA, an effect that was not observed for JunD proteins. In addition, the upregulation of Delta FosB was already present after an acute treatment but increased upon chronic treatment. By contrast, junD and Delta fosB mRNA were both upregulated significantly above control levels after an acute injection of L-DOPA. In conclusion, this study suggests a differential expression pattern of junD and Delta fosB in a rat model of L-DOPA-induced dyskinesia. The upregulation of Delta FosB protein, but not JunD, is likely to reflect an increased stability of the Delta FosB proteins without ongoing enhanced transcription of the encoding genes. (c) 2006 IBRO. Published by Elsevier Ltd. All rights reserved.

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