Impaired hand dexterity function in a non-human primate model with chronic Parkinson's disease

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Title
Impaired hand dexterity function in a non-human primate model with chronic Parkinson's disease
Author(s)
Jincheol Seo; Jinyoung Won; Keonwoo Kim; Junghyung Park; Hyeon-Gu Yeo; Yu Gyeong Kim; Seung Ho Baek; H Lee; Chang-Yeop JeonWon Seok ChoiS Lee; K J Kim; Sung Hyun Park; Yeonghoon Son; Kang Jin JeongKyung Seob LimPhilyong KangHwal Yong LeeHee Chang SonJae Won HuhYoung-Hyun Kim; D S Lee; Sang-Rae Lee; J W Choi; Youngjeon Lee
Bibliographic Citation
Experimental Neurobiology, vol. 29, no. 5, pp. 376-388
Publication Year
2020
Abstract
Symptoms of Parkinson's disease (PD) caused by loss of dopaminergic neurons are accompanied by movement disorders, including tremors, rigidity, bradykinesia, and akinesia. Non-human primate (NHP) models with PD play an essential role in the analysis of PD pathophysiology and behavior symptoms. As impairments of hand dexterity function can affect activities of daily living in patients with PD, research on hand dexterity function in NHP models with chronic PD is essential. Traditional rating scales previously used in the evaluation of animal spontaneous behavior were insufficient due to factors related to subjectivity and passivity. Thus, experimentally designed applications for an appropriate apparatus are necessary. In this study, we aimed to longitudinally assess hand dexterity function using hand dexterity task (HDT) in NHP-PD models. To validate this assessment, we analyzed the alteration in Parkinsonian tremor signs and the functionality of presynaptic dopaminergic neuron using positron emission tomography imaging of dopamine transporters in these models. In addition, a significant inverse correlation between HDT and DAT level was identified, but no local bias was found. The correlation with intention tremor signs was lower than the resting tremor. In conclusion, the evaluation of HDT may reflect behavioral symptoms of NHP-PD models. Furthermore, HDT was effectively used to experimentally distinguish intention tremors from other tremors.
Keyword
Parkinson's diseaseNon-human primateHand dexterity functionHand dexterity taskTremor
ISSN
1226-2560
DOI
http://dx.doi.org/10.5607/en20040
Type
Article
Appears in Collections:
Ochang Branch Institute > Division of Bioinfrastructure > National Primate Research Center > 1. Journal Articles
Jeonbuk Branch Institute > Primate Resources Center > 1. Journal Articles
Ochang Branch Institute > Division of Bioinfrastructure > Futuristic Animal Resource & Research Center > 1. Journal Articles
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