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Huang X, He Q, Ruan X, Li Y, Kuang Z, Wang M, Guo R, Bu S, Wang Z, Yu S, Chen A, Wei X. Structural connectivity from DTI to predict mild cognitive impairment in de novo Parkinson's disease. Neuroimage Clin 2023; 41:103548. [PMID: 38061176 PMCID: PMC10755095 DOI: 10.1016/j.nicl.2023.103548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 11/27/2023] [Accepted: 11/28/2023] [Indexed: 01/01/2024]
Abstract
BACKGROUND Early detection of Parkinson's disease (PD) patients at high risk for mild cognitive impairment (MCI) can help with timely intervention. White matter structural connectivity is considered an early and sensitive indicator of neurodegenerative disease. OBJECTIVES To investigate whether baseline white matter structural connectivity features from diffusion tensor imaging (DTI) of de novo PD patients can help predict PD-MCI conversion at an individual level using machine learning methods. METHODS We included 90 de novo PD patients who underwent DTI and 3D T1-weighted imaging. Elastic net-based feature consensus ranking (ENFCR) was used with 1000 random training sets to select clinical and structural connectivity features. Linear discrimination analysis (LDA), support vector machine (SVM), K-nearest neighbor (KNN) and naïve Bayes (NB) classifiers were trained based on features selected more than 500 times. The area under the ROC curve (AUC), accuracy (ACC), sensitivity (SEN) and specificity (SPE) were used to evaluate model performance. RESULTS A total of 57 PD patients were classified as PD-MCI nonconverters, and 33 PD patients were classified as PD-MCI converters. The models trained with clinical data showed moderate performance (AUC range: 0.62-0.68; ACC range: 0.63-0.77; SEN range: 0.45-0.66; SPE range: 0.64-0.84). Models trained with structural connectivity (AUC range, 0.81-0.84; ACC range, 0.75-0.86; SEN range, 0.77-0.91; SPE range, 0.71-0.88) performed similar to models that were trained with both clinical and structural connectivity data (AUC range, 0.81-0.85; ACC range, 0.74-0.85; SEN range, 0.79-0.91; SPE range, 0.70-0.89). CONCLUSIONS Baseline white matter structural connectivity from DTI is helpful in predicting future MCI conversion in de novo PD patients.
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Affiliation(s)
- Xiaofei Huang
- Department of Radiology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangdong, China
| | - Qing He
- Department of Radiology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangdong, China
| | - Xiuhang Ruan
- Department of Radiology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangdong, China
| | - Yuting Li
- Department of Radiology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangdong, China; Affiliated Dongguan Hospital, Southern Medical University (Dongguan People's Hospital), Guangdong, China
| | - Zhanyu Kuang
- Department of Radiology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangdong, China
| | - Mengfan Wang
- Department of Radiology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangdong, China
| | - Riyu Guo
- Department of Radiology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangdong, China
| | - Shuwen Bu
- Department of Radiology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangdong, China
| | - Zhaoxiu Wang
- Department of Radiology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangdong, China
| | - Shaode Yu
- School of Information and Communication Engineering, Communication University of China, Beijing, China.
| | - Amei Chen
- Department of Radiology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangdong, China.
| | - Xinhua Wei
- Department of Radiology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangdong, China.
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Waggan I, Rissanen E, Tuisku J, Matilainen M, Parkkola R, Rinne JO, Airas L. Adenosine A 2A receptor availability in cerebral gray and white matter of patients with Parkinson's disease. Parkinsonism Relat Disord 2023; 113:105766. [PMID: 37480614 DOI: 10.1016/j.parkreldis.2023.105766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 06/23/2023] [Accepted: 07/15/2023] [Indexed: 07/24/2023]
Abstract
OBJECTIVE Atrophic changes in cerebral gray matter of patients with PD have been reported extensively. There is evidence suggesting an association between cortical gyrification changes and white matter abnormalities. Adenosine A2A receptors have been shown to be upregulated in cerebral white matter and on reactive astrocytes in preclinical models of neurodegenerative diseases. We, therefore, sought to investigate in vivo changes in A2A receptor availability in cerebral gray and white matter of PD patients and its association with gray matter atrophy. METHODS Eighteen patients with PD without dyskinesia and seven healthy controls were enrolled for this study. Brain MRI and dynamic PET scan was acquired with [11C]TMSX radioligand which binds selectively to A2A receptors. FreeSurfer software was used to segment cerebral gray and white matter structures. The resulting masks were used to calculate region specific volumes and to derive distribution volume ratios (DVRs), after co-registration with PET images, for the quantification of specific [11C]TMSX binding. RESULTS We showed an increase in A2A receptor availability in frontal (P < 0.001) and parietal (P < 0.001) white matter and a decrease in occipital (P = 0.02) gray matter of PD patients as compared to healthy controls. A decrease in gray matter volume ratios was observed in frontal (P < 0.01), parietal (P < 0.001), temporal (P < 0.01) and occipital (P < 0.01) ROIs in patients with PD versus healthy controls. CONCLUSIONS Our results suggest a role of A2A receptor-based signaling in the neurodegenerative changes seen in the cerebral gray and white matter of patients with PD.
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Affiliation(s)
- Imran Waggan
- Turku PET Centre, Turku University Hospital and University of Turku, Turku, Finland; Division of Clinical Neurosciences, Turku University Hospital, Turku, Finland.
| | - Eero Rissanen
- Turku PET Centre, Turku University Hospital and University of Turku, Turku, Finland; Division of Clinical Neurosciences, Turku University Hospital, Turku, Finland
| | - Jouni Tuisku
- Turku PET Centre, Turku University Hospital and University of Turku, Turku, Finland
| | - Markus Matilainen
- Turku PET Centre, Turku University Hospital and University of Turku, Turku, Finland
| | - Riitta Parkkola
- Turku PET Centre, Turku University Hospital and University of Turku, Turku, Finland; Radiology Department, Division of Medical Imaging, Turku University Hospital, Turku, Finland
| | - Juha O Rinne
- Turku PET Centre, Turku University Hospital and University of Turku, Turku, Finland; Division of Clinical Neurosciences, Turku University Hospital, Turku, Finland
| | - Laura Airas
- Turku PET Centre, Turku University Hospital and University of Turku, Turku, Finland; Division of Clinical Neurosciences, Turku University Hospital, Turku, Finland
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Guo X, Chen L, Li J. Plantamajoside Alleviates Substantia Nigra Damage in Parkinson's Disease Mice by Inhibiting HDAC2/MAPK Signaling and Reducing Microglia Polarization. ACS Chem Neurosci 2023; 14:1119-1125. [PMID: 36859770 DOI: 10.1021/acschemneuro.2c00668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023] Open
Abstract
Parkinson's disease (PD) is a common neurodegenerative disorder caused by dopaminergic neuron progressive degeneration. Inhibition of microglial activation may contribute to the treatment and prevention of PD. Plantamajoside (PMS) is a natural compound extracted from plantain seeds. It has a wide range of biological activities, including anti-inflammatory, antioxidative, as well as antitumor effects. However, its possible effects on PD are still unclear. In this study, lipopolysaccharide (LPS) was first injected into the right midbrain substantia nigra (SN) of male C57BL/6 mice to establish the PD mouse model. We found that PMS improved LPS-induced behavioral dysfunction in PD mice. PMS attenuated LPS-induced SN injury in PD mice. PMS could suppress LPS-induced microglial overactivation in PD mice. In addition, MS inhibited LPS-induced activation of the HDAC2/MAPK pathway in PD mice and BV-2 cells. It further revealed that PMS alleviated microglia polarization by inhibiting HDAC2. The limitation of this study was the lack of experiments for investigating the further molecular mechanism and in vivo animal validation, which needs to be further confirmed in the future. Collectively, our data suggested that PMS could serve as a promising drug for PD.
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Affiliation(s)
- Xiaoyuan Guo
- Department of Neurosurgery, Nanjing Medical University, Nanjing, Jiangsu 210000, China.,Department of Neurosurgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu 210000, China
| | - Lukui Chen
- Department of Neurosurgery, Nanjing Medical University, Nanjing, Jiangsu 210000, China.,Department of Neurosurgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu 210000, China
| | - Jianxia Li
- Department of Neurosurgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu 210000, China
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