Clinical Research Directory

1. Inclusion Criteria 1.1 A total of 100 patients with primary Parkinson's disease were enrolled. The inclusion criteria were as follows: patients with primary Parkinson's disease, based on the 2015 MDS diagnostic criteria for Parkinson's disease. Disorder (MMSE score \< 24); (3) those with severe mental illness who are difficult to cooperate. 1.2 A total of 100 patients with Alzheimer's disease were enrolled. The inclusion criteria were as follows: patients with Alzheimer's disease, based on the IWG-2 clinical diagnostic criteria. 1.3 Neurodegenerative diseases (non-PD and non-AD) group (n = 100) : meeting the diagnostic criteria of the corresponding diseases. 1.4 Eighty healthy elderly controls were included. The inclusion criteria were as follows: ① voluntarily participated in this study and signed the informed consent; ② Age and gender were matched with the case group. 1.5 80 young healthy controls, inclusion criteria: ① voluntarily participated in this study and signed the informed consent; ② Gender was matched with the case group, and the age was less than 60 years old. 2. Exclusion Criteria 2.1 A total of 100 patients with PD were enrolled. Exclusion criteria: ① patients with other central nervous system diseases, such as cerebrovascular diseases, brain trauma, inflammatory diseases of the central system, intracranial tumors and after neurosurgery; ② patients with various types of cognitive impairment (MMSE score \< 24); (3) those with severe mental illness who are difficult to cooperate. 2.2 A total of 100 patients with Alzheimer's disease were enrolled. The exclusion criteria were: ① patients with other central nervous system diseases, such as cerebrovascular diseases, brain trauma, central system inflammatory diseases, intracranial tumors and after neurosurgery; ② patients with severe mental illness who are difficult to cooperate. 2.3 Neurodegenerative diseases (non-PD non-AD) group (n = 100), exclusion criteria: ① patients with other central nervous system diseases, such as cerebrovascular diseases, brain trauma, central system inflammatory diseases, intracranial tumors and after neurosurgery; ② patients with severe mental illness who are difficult to cooperate. 2.4 Eighty healthy elderly controls were included. The exclusion criteria were as follows: ① History of chronic diseases related to the study subjects, such as cerebrovascular diseases, brain trauma, inflammatory diseases of the central system, intracranial tumors and neurosurgery; ② patients with various types of cognitive impairment (MMSE score \< 24); ③ Poor compliance. 2.5 80 young healthy controls, exclusion criteria: ① history of chronic diseases related to the study subjects, such as cerebrovascular diseases, brain trauma, inflammatory diseases of the central system, intracranial tumors and neurosurgical surgery; ② patients with various types of cognitive impairment (MMSE score \< 24); ③ Poor compliance.