机构:[1]Department of Neurology, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China,[2]Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China,[3]University of the Chinese Academy of Sciences, Beijing, China,[4]Medical Imaging Department, Kunming General Hospital of PLA, Kunming, Yunnan, China,[5]Kunming Primate Research Center, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China,[6]Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China,[7]Neurosurgery Department, 1st Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China,外科科室神经外科神经外一科(神经外科)昆明医科大学附属第一医院[8]CAS Center for Excellence in Brain Science, Chinese Academy of Sciences, Shanghai, China
Complete and specific ablation of a single dopaminergic (DA) pathway is a critical step to distinguish the roles of DA pathways in vivo. However, this kind of technique has not been reported in non-human primates. This study aimed to establish a lesioning method with a complete and specific ablation.
A carefully designed infusion route based on a MRI stereotactic technique was developed to deliver the highly selective dopaminergic toxin 1-methyl-4-phenylpyridinium (MPP+) unilaterally into multiple sites of compact part of substantia nigra (SNc) and striatum in monkeys. The nigrostriatal DA pathway was selected because lesioning of this pathway may induce symptoms that are suitable for evaluation. The pathological, behavioral, neuropharmacological, and clinical laboratorial data were collected to evaluate the lesioning effects.
Pathological examination revealed a complete ablation of tyrosine hydroxylase positive (TH+) neurons in the SNc, while preserving intact TH+ neurons in the ventral tegmental area (VTA) nearby. TH+ projections in the striatum were also unilaterally lost. The monkeys displayed stable (>28 weeks) rotations and symptoms which were expected with loss of DA neurons in the SNc, with rest tremor being an exception. No item implied the presence of a severe side effect caused by the operation or the intracerebral MPP+ infusion. The results suggested that rest tremor may not directly rely on the nigrostriatal pathway.
Taken together, in addition to providing a specific nigrostriatal DA lesioned model, this method, combined with brain stimulation or other techniques, can be applied as a powerful tool for the complete lesion of any desired DA pathway in order to study its specific functions in the brain.
基金:
Strategic Priority Research Program of CAS
(XDB02020000), National Program on Key Basic
Research Project (973 Programs 2015CB755605,
2012CB825503, 2012CBA01304), Key Program of
the Chinese Academy of Sciences (KZCC-EW-103-
2), Training Program of the Major Research Plan of
the National Natural Science Foundation of China
(91332120), National Natural Science Foundation of
China (31271167, 81271495, 81471312, 81271248),The Yunnan Provincial Project to Attract Onehundred
Exceptional Talents from Overseas,
Selected Frontier Scientific Significant Breakthrough
Project of CAS, International Cooperation Projection
(2011C14026) of Zhejiang Province Department of
Science and Technology. The funders had no role in
study design, data collection and analysis, decision to
publish, or preparation of the manuscript.
第一作者机构:[1]Department of Neurology, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China,
共同第一作者:
通讯作者:
推荐引用方式(GB/T 7714):
Xiaoguang Lei,Hao Li,Baihui Huang,et al.1-Methyl-4-phenylpyridinium stereotactic infusion completely and specifically ablated the nigrostriatal dopaminergic pathway in rhesus macaque.[J].PLOS ONE.2015,10(5):doi:10.1371/journal.pone.0127953.
APA:
Xiaoguang Lei,Hao Li,Baihui Huang,Joshua Rizak,Ling Li...&Baorong Zhang.(2015).1-Methyl-4-phenylpyridinium stereotactic infusion completely and specifically ablated the nigrostriatal dopaminergic pathway in rhesus macaque..PLOS ONE,10,(5)
MLA:
Xiaoguang Lei,et al."1-Methyl-4-phenylpyridinium stereotactic infusion completely and specifically ablated the nigrostriatal dopaminergic pathway in rhesus macaque.".PLOS ONE 10..5(2015)