• Hong-Jie Liu, Tao-Zhi He, Jiong-Lu Zhang, Qian Wu, Li-Juan Tan, and Dong-Dong Liu.
• College of Traditional Chinese Medicine, Ji'nan University Guangzhou 510632, China.
• Zhongguo Zhong Yao Za Zhi. 2020 Dec 1; 45 (24): 6043-6052.

AbstractTo systematically evaluate the efficacy of traditional Chinese medicine(TCM) compounds combined with levodopa medicine in the treatment of Parkinson's disease(PD), and screen basic herbs to provide certain evidence-based medical proof and program for better guidance on clinical drug use. Six databases were searched to screen out the randomized controlled trial on the TCM compounds combined with levodopa medicine in the treatment of PD. Literature quality of the included studies was evaluated by improved Jadad rating scale, and the Meta-analysis was performed by RevMan 5.3 software. After the data of the basic TCM compounds involved were sorted out, the strong association rules were found by using Apriori algorithm of SPSS Modeler 18.0 software, and then the basic herbs for the treatment of PD could be picked out. A total of 20 studies were eventually included, involving 1 784 patients. Ten studies were of high-quality literature, Jadad score≥4 points. Meta-analysis showed that efficacy of TCM combined with levodopa medicine was better than levodopa medicine alone in lowering Unified Parkinson's Disease Rating Scale(UPDRS) score: UPDRS Ⅰ(MD=-0.43, 95%CI[-0.62,-0.24], P<0.000 1), UPDRS Ⅱ(MD=-2.72, 95%CI[-3.24,-2.21], P<0.000 01), UPDRS Ⅲ(MD =-1.97, 95%CI[-2.69,-1.25], P<0.000 01), UPDRS Ⅳ(MD=-0.28, 95%CI[-0.46,-0.11], P=0.002). And the improvement in UPDRS score reduction rate of TCM combined with levodopa medicine was better than that in levodopa medicine alone: effective rate(OR=4.81, 95%CI[3.50, 6.62], P<0.000 01). Data mining results showed that the basic prescription for treating PD consisted of Paeoniae Radix Alba-Rehmanniae Radix Praeparata-Gastrodiae Rhizoma in general. According to each part of UPDRS, the basic prescription for treating mentation, behavior and mood(UPDRS Ⅰ) consists of Paeoniae Radix Alba-Rehmanniae Radix Praeparata-Glycyrrhizae Radix et Rhizoma Praeparata Cum Melle, Among which Glycyrrhizae Radix et Rhizoma Praeparata Cum Melle might have unique efficacy. The basic prescriptions for treating UPDRS Ⅱ and UPDRS Ⅲ consisted of Paeoniae Radix Alba-Rehmanniae Radix Praeparata, or Chuanxiong Rhizoma-Angelicae Sinensis Radix(two drug combinations). However, in the treatment of UPDRS Ⅳ, the drugs were scattered. But due to the limitations in the quantity and quality of clinical studies, the results obtained still need further research and clinical confirmation of its efficacy.

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