Serotonin hyperinnervation and upregulated 5-HT2A receptor expression and motor-stimulating function in nigrostriatal dopamine-deficient Pitx3 mutant mice.
Serotonin hyperinnervation and upregulated 5-HT2A receptor expression and motor-stimulating function in nigrostriatal dopamine-deficient Pitx3 mutant mice.
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DOI:
10.1016/j.brainres.2012.11.010
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发表时间:
2013-01-23
期刊:
影响因子:
2.9
通讯作者:
Zhou FM
中科院分区:
文献类型:
--
作者:
Li L;Qiu G;Ding S;Zhou FM
The striatum receives serotonin (5-hydroxytryptamine, 5-HT) innervation and expresses 5-HT2A receptors (5-HT2ARs) and other 5-HT receptors, raising the possibility that the striatal 5-HT system may undergo adaptive changes after chronic severe dopamine (DA) loss and contribute to the function and dysfunction of the striatum. Here we show that in transcription factor Pitx3 gene mutant mice with a selective, severe DA loss in the dorsal striatum mimicking the DA denervation in late Parkinson’s disease (PD), both the 5-HT innervation and the 5-HT2AR mRNA expression were increased in the dorsal striatum. Functionally, while having no detectable motor effect in wild type mice, the 5-HT2R agonist 2,5-dimethoxy-4-iodoamphetamine increased both the baseline and L-dopa-induced normal ambulatory and dyskinetic movements in Pitx3 mutant mice, whereas the selective 5-HT2AR blocker volinanserin had the opposite effects. These results demonstrate that Pitx3 mutant mice are a convenient and valid mouse model to study the compensatory 5-HT upregulation following the loss of the nigrostriatal DA projection and that the upregulated 5-HT2AR function in the DA deficient dorsal striatum may enhance both normal and dyskinetic movements.
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影响因子:
6.1
作者:
Greene, James G.
通讯作者:
Greene, James G.
DOI:
10.1073/pnas.1006511108
发表时间:
2011-01-11
影响因子:
11.1
作者:
Ding, Yunmin;Won, Lisa;Kang, Un Jung
通讯作者:
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影响因子:
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通讯作者:
Parent, Martin
DOI:
10.1016/s0165-3806(99)00066-8
发表时间:
1999-08-05
期刊:
DEVELOPMENTAL BRAIN RESEARCH
影响因子:
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作者:
Basura, GJ;Walker, PD
通讯作者:
Walker, PD
影响因子:
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作者:
Cenci, M. Angela;Konradi, Christine
通讯作者:
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