4.2 Article

Neuroprotective effects of Wharton's jelly-derived mesenchymal stem cells on motor deficits due to Parkinson's disease

期刊

IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES
卷 24, 期 9, 页码 1173-1181

出版社

MASHHAD UNIV MED SCIENCES
DOI: 10.22038/ijbms.2021.54091.12159

关键词

Dopamine; L-dopa; Mesenchymal stem cells; Parkinson's disease; Rat; Tyrosine hydroxylase

资金

  1. Research Affairs Committee of Jundishapur University of Medical Sciences, Ahvaz, Iran [APRC-9615]

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The study showed that in the Parkinson's disease model, motor activities, the number of dopaminergic neurons, and levels of dopamine and tyrosine hydroxylase were all improved in the treated groups compared to the Parkinson's disease group.
Objective(s): Human Wharton's jelly-derived mesenchymal stem cells (hWJ-MSCs) have been recognized as a potential tool to replace damaged cells by improving the survival of the dopaminergic cells in Parkinson's disease (PD). In this study, we examined the effects of hWJ-MSCs and associated with L-dopa/carbidopa on motor disturbances in the PD model. Materials and Methods: PD was induced by injection of 6-hydroxydopamine (6-OHDA) (16 mu g/2 mu l into medial forebrain bundle (MFB)). Sham group received a vehicle instead of 6-OHDA. PD+C group received hWJ-MSCs twice on the 14th and 28th days post PD induction. PD+C+D group received hWJMSCs and also L-dopa/carbidopa (10/30 mg/kg). PD+D group received L-dopa/carbidopa alone. Four months later, motor activities (the parameters of locomotor and muscle stiffness) were evaluated, dopaminergic neurons were counted in substantia nigra pars compacta (SNc), the level of dopamine (DA), and tyrosine hydroxylase (TH) were measured in the striatum. Results: Data indicated that motor activities, the number of dopaminergic neurons, and levels of DA and TH activities were significantly reduced in PD rats as compared to the sham group (P<0.001). However, the same parameters were improved in the treated groups when compared with the PD group (P<0.001 and P<0.01, respectively). Conclusion: The chronic treatment of PD rats with hWJ-MSCs and L-dopa/carbidopa, improved motor activity, which may be the result of increased TH activity and due to released DA from dopaminergic neurons.

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