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J Exerc Rehabil. 2013 Jun 30;9(3):354-61. doi: 10.12965/jer.130048. eCollection 2013.

Treadmill exercise alleviates short-term memory impairment in 6-hydroxydopamine-induced Parkinson's rats.

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  • 1Department of Physiology, College of Medicine, Kyung Hee University, Seoul, Korea ; Department of Physical Education, College of Education, Seoul National University, Seoul, Korea.

Erratum in

  • J Exerc Rehabil. 2013;9(4):447.

Abstract

Progressive loss of dopaminergic neurons in substantia nigra is a key pathogenesis of Parkinson's disease. In the present study, we investigated the effects of treadmill exercise on short-term memory, apoptotic dopaminergic neuronal cell death and fiber loss in the nigrostriatum, and cell proliferation in the hippocampal dentate gyrus of Parkinson's rats. Parkinson's rats were made by injection of 6-hydroxydopamine (6-OHDA) into the striatum using stereotaxic instrument. Four weeks after 6-OHDA injection, the rats in the 6-OHDA-injection group exhibited significant rotational asymmetry following apomorphine challenge. The rats in the exercise groups were put on the treadmill to run for 30 min once a day for 14 consecutive days starting 4 weeks after 6-OHDA injection. In the present results, extensive degeneration of the dopaminergic neurons in the substantia nigra with loss of dopaminergic fibers in the striatum were produced in the rats without treadmill running, which resulted in short-term memory impairment. However, the rats performing treadmill running for 2 weeks alleviated nigrostriatal dopaminergic cell loss and alleviated short-term memory impairment with increasing cell proliferation in the hippocampal dentate gyrus of Parkinson's rats. The present results show that treadmill exercise may provide therapeutic value for the Parkinson's disease.

KEYWORDS:

6-Hydroxydopamine; Apoptosis; Cell proliferation; Parkinson’s rats; Treadmill exercise

PMID:
24278884
[PubMed]
PMCID:
PMC3836534
Free PMC Article
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