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.
复制标题

DOI:
10.1016/j.brainres.2012.11.010
复制
发表时间:
2013-01-23
期刊:
影响因子:
2.9
通讯作者:
Zhou FM
Zhou FM
中科院分区:
医学3区
文献类型:
--
作者:
Li L;Qiu G;Ding S;Zhou FM

文献摘要

参考文献

相似文献

纹状体接受5-羟色胺(5-hydroxytryptamine,5-HT)神经支配并表达5-HT 2A受体(5-HT 2AR)和其他5-HT受体,这增加了纹状体5-HT系统在慢性严重多巴胺(DA)丧失后可能发生适应性变化并导致纹状体功能和功能障碍的可能性。在这里,我们表明,在转录因子Pitx 3基因突变小鼠的选择性,严重的DA损失在背侧纹状体模仿DA去神经支配在晚期帕金森病(PD),5-HT神经支配和5-HT 2AR mRNA的表达在背侧纹状体增加。在功能上,5-HT 2 R激动剂2,5-二甲氧基-4-碘苯丙胺在野生型小鼠中没有可检测到的运动效应,但在Pitx 3突变小鼠中,5-HT 2 R激动剂2,5-二甲氧基-4-碘苯丙胺增加了基线和L-多巴诱导的正常走动和运动障碍运动,而选择性5-HT 2AR阻断剂伏南色林具有相反的作用。这些结果表明,Pitx 3突变小鼠是一个方便和有效的小鼠模型,以研究补偿性5-HT上调后的黑质纹状体DA投射的损失和上调5-HT 2AR功能的DA缺乏背侧纹状体可能会增强正常和运动障碍的运动。
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.
DOI: 10.1016/j.nbd.2010.10.022
发表时间: 2012-01
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: Kang, Un Jung
DOI: 10.1016/j.parkreldis.2011.05.012
发表时间: 2011-09-01
影响因子: 4.1
作者:
Bedard, Catherine;Wallman, Marie-Josee;Parent, Martin
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: --
作者:
Basura, GJ;Walker, PD
通讯作者: Walker, PD
DOI: 10.1016/s0079-6123(10)83011-0
发表时间: 2010
影响因子: --
作者:
Cenci, M. Angela;Konradi, Christine
通讯作者: Konradi, Christine