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Title 

Inhibition of adenylyl cyclase type 5 prevents L-DOPA-induced dyskinesia in an animal model of Parkinson's disease

Authors 

Hye Yeon ParkYoung Mi KangYoung KangTae Shin ParkYoung Kyoung RyuJung Hwan HwangYong-Hoon KimBong Hyun ChungKi Hoan NamM R KimChul Ho LeeP L HanKyoung Shim Kim

Publisher 

Society for Neuroscience

Issue Date 

2014

Citation 

Journal of Neuroscience, vol. 34, no. 35, pp. 11744-11753

Keywords 

Adenylyl cyclaseDyskinesiaL-DOPAParkinson's disease

Abstract 

The dopamine precursor L-3,4-dihydroxyphenylalanine (L-DOPA) is widely used as a therapeutic choice for the treatment of patients with Parkinson's disease. However, the long-term use of L-DOPA leads to the development of debilitating involuntary movements, called L-DOPA-induced dyskinesia (LID). The cAMP/protein kinase A (PKA) signaling in the striatum is known to play a role in LID. However, from among the nine known adenylyl cyclases (ACs) present in the striatum, the AC that mediates LID remains unknown. To address this issue, we prepared an animal model with unilateral 6-hydroxydopamine lesions in the substantia nigra in wild-type and AC5-knock-out (KO) mice, and examined behavioral responses to short-term or long-term treatment with L-DOPA. Compared with the behavioral responses of wild-type mice, LID was profoundly reduced in AC5-KO mice. The behavioral protection of long-term treatment with L-DOPA in AC5-KO mice was preceded by a decrease in the phosphorylation levels of PKA substrates ERK (extracellular signal-regulated kinase) 1/2, MSK1 (mitogen- and stress-activated protein kinase 1), and histone H3, levels of which were all increased in the lesioned striatum of wild-type mice. Consistently, FosB/ΔFosB expression, which was induced by long-term L-DOPA treatment in the lesioned striatum, was also decreased in AC5-KO mice. Moreover, suppression of AC5 in the dorsal striatum with lentivirus-shRNA-AC5 was sufficient to attenuate LID, suggesting that the AC5-regulated signaling cascade in the striatum mediates LID. These results identify the AC5/cAMP system in the dorsal striatum as a therapeutic target for the treatment of LID in patients with Parkinson's disease.

ISSN 

0270-6474

Link 

http://dx.doi.org/10.1523/JNEUROSCI.0864-14.2014

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2019-05-02


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