Acta Anatomica Sinica ›› 2017, Vol. 48 ›› Issue (4): 361-374.doi: 10.16098/j.issn.0529-1356.2017.04.001

• Neurobiology •     Next Articles

Effects of 6-hydroxydopamine on dopaminergic neurons in nigrostriatal system and on behavior of adult mice

XIE Ming-qi1,2 CHEN Zhi-chi1,2 QI Shuang-shuang3 WANG Tong-tong 1,2 ZHANG Peng4  HUANG Hou-ju 2,5 ZHOU Peng 1,2 CUI Huai-rui1  SUN Chen-you1, 2*   

  1. 1. Department of Anatomy, School of Basic Medical Sciences, Wenzhou Medical University, Zhejiang Wenzhou 325035, China; 2.Institute of Neuroscience, School of Basic Medical Sciences, Wenzhou Medical University, Zhejiang Wenzhou 325035, China; 3.Department of Pharmacy, Second Affiliated Hospital of Wenzhou Medical University, Zhejiang Wenzhou 325000, China; 4.Department of Stomatology, Taizhou Affiliated Hospital of Wenzhou Medical Univeristy, Zhejiang Taizhou 317000, China; 5.Department of Histology And Embryology, School of Basic Medical Sciences, Wenzhou Medical University, Zhejiang Wenzhou 325035, China
  • Received:2016-11-17 Revised:2017-01-07 Online:2017-08-06 Published:2017-08-06
  • Contact: SUN Chen-you E-mail:sunchenyou1972@aliyun.com

Abstract:

Objective To evaluate the proliferation of endogenous neural progenitor cells (NPCs) and its effect on the recovery of injured nigrostiatal system following mesencephalic substantia nigra lesion. Methods The proliferation of NPCs derived from the surrounding regions of the lateral ventricle, the third ventricle (3V) and the cerebral aqueduct (Aq) as well as the midbrain were investigated using immunofluorescent staining on days 3-35 following 6-hydroxydopamine (6-OHDA) injection into the unilateral substantia nigra (SN) of the adult mice. In addition, the proliferation of the SN newborn cells and their differentiation into mature neurons or dopaminergic neurons were explored. Finally, behavioral changes of mice were examined by open field and rotarod tests(n=4-6,each group).
Results The 6-OHDA-induced loss of dopaminergic neurons in the SN significantly increased the numbers of NPCs from the subventricular zone in the surrounding regions of 3V and Aq, which was most obvious on day 7 following 6-OHDA injection. The number of SN new-born cells and new-generated dopaminergic neurons reached to the peak on day 21 following 6-OHDA injection, which possibly resulted in a partial restoration in the lesioned nigrastriatum system and behavioral performance of mice. Conclusion It might be an ideal strategy to deal with Parkinson’s disease by promoting the proliferation and differentiation of endogenous NPCs.

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