Aberrant Development and Synaptic Transmission of Cerebellar Cortex in a VPA Induced Mouse Autism Model

Aberrant Development and Synaptic Transmission of Cerebellar Cortex in a VPA Induced Mouse Autism Model
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VPA 诱导的小鼠自闭症模型中小脑皮质的异常发育和突触传递

DOI:
10.3389/fncel.2018.00500
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发表时间:
2018-12
影响因子:
5.3
通讯作者:
Li Zhang
Li Zhang
中科院分区:
医学2区
文献类型:
--
作者:
Ruanna Wang;Jiahui Tan;Junxiu Guo;Yuhan Zheng;Qing Han;Kwok-Fai So;Ji;ong Yu;Li Zhang

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自闭症谱系障碍(ASD)是一种影响多个大脑区域的流行性神经发育疾病。临床和动物研究都揭示了小脑在ASD病理中的可能参与。在这项研究中,我们产生了一个啮齿类动物ASD模型,通过一个单一的产前管理丙戊酸(VPA)到怀孕的小鼠,随后小脑形态和功能的后代的研究。行为研究表明,VPA暴露导致青少年关键运动反射迟缓,成年人在音调条件复杂运动任务中的学习受损。这些行为表型与出生后早期小脑皮质颗粒细胞(GC)前体的过早迁移和过度凋亡,以及浦肯野神经元的细胞密度降低和树突状分支受损有关。在急性小脑切片上,VPA处理的小鼠中报告了浦肯野细胞的突触传递抑制。总之,来自VPA处理小鼠的解剖学、电生理学和行为异常的汇聚证据表明ASD中的小脑病理学,并表明运动功能障碍在ASD早期诊断中的潜在价值。
Autistic spectral disorder (ASD) is a prevalent neurodevelopmental disease that affects multiple brain regions. Both clinical and animal studies have revealed the possible involvement of the cerebellum in ASD pathology. In this study, we generated a rodent ASD model through a single prenatal administration of valproic acid (VPA) into pregnant mice, followed by cerebellar morphological and functional studies of the offspring. Behavioral studies showed that VPA exposure led to retardation of critical motor reflexes in juveniles and impaired learning in a tone-conditioned complex motor task in adults. These behavioral phenotypes were associated with premature migration and excess apoptosis of the granular cell (GC) precursor in the cerebellar cortex during the early postnatal period, and the decreased cell density and impaired dendritic arborization of the Purkinje neurons. On acute cerebellar slices, suppressed synaptic transmission of the Purkinje cells were reported in the VPA-treated mice. In summary, converging evidence from anatomical, electrophysiological and behavioral abnormalities in the VPA-treated mice suggest cerebellar pathology in ASD and indicate the potential values of motor dysfunction in the early diagnosis of ASD.
DOI: 10.1038/ncomms12627
发表时间: 2016-09-01
影响因子: 16.6
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Peter S;Ten Brinke MM;Stedehouder J;Reinelt CM;Wu B;Zhou H;Zhou K;Boele HJ;Kushner SA;Lee MG;Schmeisser MJ;Boeckers TM;Schonewille M;Hoebeek FE;De Zeeuw CI
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