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KMID : 0363320200410061089
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Journal of Korean Oriental Internal Medicine
2020 Volume.41 No. 6 p.1089 ~ p.1099
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A Review of the Neuroprotective Effects of Cinnamon in Experimental Studies on Parkinson’s Disease
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Heo Hye-Min
Han Ju-Hee
Jeong Min-Jeong
Kim Hong-Jun
Jang In-Soo
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Abstract
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Objective: The purpose of this study was to investigate the effect of cinnamon on the treatment of Parkinson’s disease (PD) and to introduce its use in Korea.
Method: We searched the experimental studies in electronic databases (PubMed, CNKI, Wanfang, CiNii, J-STAGE, Science ON, and OASIS) using the key search terms “cinnamic acid”, “cinnamon”, “cinnamomum”, “Parkinson’s disease”, “Parkinson disease”, “Parkinsonism”, and “dopamine”. This study only involved experimental studies (in vivo and in vitro) that adopted cinnamon as a single administration and measured indicators relating to Parkinson’s disease, including parkin, tyrosine hydroxylase (TH), and dopamine.
Results: A Total of 11 literature studies were selected, and they all showed that treatment with cinnamon has a neuroprotective effect. Cinnamon activated neuroprotective factors and restored neurotransmitters and it reduced the rate of oxidative stress and inflammation in neurons. As a result, cell viability was upregulated, while cell apoptosis and neurodegeneration were downregulated. Five in vivo studies, through behavioral tests, also confirmed that cinnamon recovers locomotor function in PD models.
Conclusion: We identified that cinnamon is an effective neural protector and improves motor performance in behavioral testing in the experimental PD studies.
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KEYWORD
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cinnamon, Parkinson’s disease, dopamine, review
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