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Zhai H, Fan W, Xiao Y, Zhu Z, Ding Y, He C, Zhang W, Xu Y, Zhang Y. Convergent and divergent intra- and internetwork connectivity in Parkinson's disease with wearing-off. Neurol Sci 2024; 45:155-169. [PMID: 37578631 PMCID: PMC10761410 DOI: 10.1007/s10072-023-07005-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 08/06/2023] [Indexed: 08/15/2023]
Abstract
OBJECTIVE Our study aimed to explore the functional connectivity alterations between cortical nodes of resting-state networks in Parkinson's disease (PD) patients with wearing-off (WO) at different levels. METHODS Resting-state functional magnetic resonance imaging was performed on 36 PD patients without wearing-off (PD-nWO), 30 PD patients with wearing-off (PD-WO), and 35 healthy controls (HCs) to extract functional networks. Integrity, network, and edge levels were calculated for comparison between groups. UPDRS-III, MMSE, MOCA, HAMA, and HAMD scores were collected for further regression analysis. RESULTS We observed significantly reduced connectivity strength in the dorsal attention network and limbic network in the PD-WO group compared with the HC group. The PD-WO group showed a decreased degree of functional connectivity at 12 nodes, including the bilateral orbital part of the superior frontal gyrus, right olfactory cortex, left medial orbital part of the superior frontal gyrus, bilateral gyrus rectus, right parahippocampal gyrus, right thalamus, left Heschl's gyrus, right superior temporal gyrus part of the temporal pole, left middle temporal gyrus part of the temporal pole, and right inferior temporal gyrus. Furthermore, the PD-WO group showed a significantly lower degree of functional connectivity in the left orbital part of the superior frontal gyrus and right gyrus rectus than the PD-nWO group. Internetwork analysis indicated reduced functional connectivity in five pairs of resting-state networks. CONCLUSION Our results demonstrated altered intra- and internetwork connections in PD patients with WO. These findings will facilitate a better understanding of the distinction between the network changes in PD pathophysiology.
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Affiliation(s)
- Heng Zhai
- Department of Neurology, Guangdong Neuroscience Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangdong Province, Guangzhou, 510080, China
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei Province, China
| | - Wenliang Fan
- Department of Radiology, Union hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei Province, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, Hubei Province, China
| | - Yan Xiao
- Department of Radiology, Union hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei Province, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, Hubei Province, China
| | - Zhipeng Zhu
- Department of Radiology, Union hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei Province, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, Hubei Province, China
| | - Ying Ding
- Department of Radiology, Union hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei Province, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, Hubei Province, China
| | - Chentao He
- Department of Neurology, Guangdong Neuroscience Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangdong Province, Guangzhou, 510080, China
| | - Wei Zhang
- Department of Radiology, Union hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei Province, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, Hubei Province, China
| | - Yan Xu
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei Province, China.
| | - Yuhu Zhang
- Department of Neurology, Guangdong Neuroscience Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangdong Province, Guangzhou, 510080, China.
- Guangzhou Key Laboratory of Diagnosis and Treatment for Neurodegenerative Diseases, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China.
- Guangdong Provincial Key Laboratory of Artificial Intelligence in Medical Image Analysis and Application, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China.
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Zhai H, Fan W, Xiao Y, Zhu Z, Ding Y, He C, Zhang W, Xu Y, Zhang Y. Voxel-based morphometry of grey matter structures in Parkinson's Disease with wearing-off. Brain Imaging Behav 2023; 17:725-737. [PMID: 37735325 PMCID: PMC10733201 DOI: 10.1007/s11682-023-00793-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/28/2023] [Indexed: 09/23/2023]
Abstract
Our study aimed to investigate the grey matter (GM) changes using voxel-based morphometry (VBM) in Parkinson's disease (PD) patients with wearing-off (WO). 3D-T1-weighted imaging was performed on 48 PD patients without wearing-off (PD-nWO), 39 PD patients with wearing-off (PD-WO) and 47 age and sex-matched healthy controls (HCs). 3D structural images were analyzed by VBM procedure with Statistical Parametric Mapping (SPM12) to detect grey matter volume. Widespread areas of grey matter changes were found in patients among three groups (in bilateral frontal, temporal lobes, lingual gyrus, inferior occipital gyrus, right precuneus, right superior parietal gyrus and right cerebellum). Grey matter reductions were found in frontal lobe (right middle frontal gyrus, superior frontal gyrus and precentral gyrus), right parietal lobe (precuneus, superior parietal gyrus, postcentral gyrus), right temporal lobe (superior temporal gyrus, middle temporal gyrus), bilateral lingual gyrus and inferior occipital gyrus in PD-WO group compared with the PD-nWO group. Our results suggesting that wearing-off may be associated with grey matter atrophy in the cortical areas. These findings may aid in a better understanding of the brain degeneration process in PD with wearing-off.
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Affiliation(s)
- Heng Zhai
- Department of Neurology, Guangdong Neuroscience Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, No. 106 Zhongshan Er Road, Guangzhou, 510080, Guangdong Province, China
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei Province, China
| | - Wenliang Fan
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei Province, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, Hubei Province, China
| | - Yan Xiao
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei Province, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, Hubei Province, China
| | - Zhipeng Zhu
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei Province, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, Hubei Province, China
| | - Ying Ding
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei Province, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, Hubei Province, China
| | - Chentao He
- Department of Neurology, Guangdong Neuroscience Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, No. 106 Zhongshan Er Road, Guangzhou, 510080, Guangdong Province, China
| | - Wei Zhang
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei Province, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, Hubei Province, China
| | - Yan Xu
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei Province, China
| | - Yuhu Zhang
- Department of Neurology, Guangdong Neuroscience Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, No. 106 Zhongshan Er Road, Guangzhou, 510080, Guangdong Province, China.
- Guangzhou Key Laboratory of Diagnosis and Treatment for Neurodegenerative Diseases, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China.
- Guangdong Provincial Key Laboratory of Artificial Intelligence in Medical Image Analysis and Application, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China.
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Wan Y, Yuan C, Hou X, Chen W, Wang C, Gao S, Wang Y, Jin L, Liu Z. Wearing-off Identification in Parkinson's Disease: The shapd-woq Study. Front Neurol 2020; 11:116. [PMID: 32231634 PMCID: PMC7083219 DOI: 10.3389/fneur.2020.00116] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 02/03/2020] [Indexed: 11/13/2022] Open
Abstract
Objectives: To clarify the frequency of wearing-off phenomenon (WO) and the validity of the Chinese version of the 9-item wearing-off questionnaire (CWOQ-9) in WO identification in this large population. Methods: Parkinson's patients treated with antiparkinsonian medications were consecutively recruited into this observational, cross-sectional investigation. Patients completed the CWOQ-9 prior to the independent clinician assessment. Results: A total of 1,385 patients were included in the analysis. The mean age was 69.7 ± 9.5 years and the mean disease duration was 5.8 ± 4.7 years. Clinicians identified WO in 763 patients, with an overall prevalence of 55.1%. In patients within 1 year of disease duration, clinicians diagnosed WO in eight patients, with a percentage of 12.9%. With the disease progression, the WO frequency gradually increased to 76.2% in patients with 10-15 years of disease duration. Then, it slowly decreased at a longer disease duration. The occurrence of WO was closely associated with the disease duration, H&Y staging, and levodopa daily dose. CWOQ-9 identified 1,071 patients (1071/1398, 77.33%) that had WO-related symptoms. The mean CWOQ-9 score was 3.4 ± 1.6. CWOQ-9 corresponded with clinician assessments of WO in 734 of 763 cases; clinicians disagreed with the CWOQ-9 considering the presence of WO in 337 of 1,071 cases. The sensitivity and specificity of CWOQ-9 were 96.2 and 45.8%, respectively. Conclusions: WO occurred frequently at the early and middle stage of PD. CWOQ-9 was qualified as a pre-visiting screening tool for clinicians to better identify WO.
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Affiliation(s)
- Ying Wan
- Department of Neurology, Xinhua Hospital, Affiliated to Shanghai JiaoTong University, School of Medicine, Shanghai, China
| | - Canxing Yuan
- Department of Neurology, Longhua Hospital Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiaojun Hou
- Department of Neurology, The Second Military Medical University Affiliated Changhai Hospital, Shanghai, China
| | - Wei Chen
- Department of Neurology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - ChunYan Wang
- Department of Neurology, Shanghai Yangpu Hospital of Traditional Chinese Medicine, Shanghai, China
| | - Shan Gao
- Department of Neurology, Shanghai JiaoTong University Affiliated the Sixth People Hospital, Shanghai, China
| | - Yuhui Wang
- Department of Neurology, Shanghai Punan Hospital, Shanghai, China
| | - Lingjing Jin
- Department of Neurology, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Zhenguo Liu
- Department of Neurology, Xinhua Hospital, Affiliated to Shanghai JiaoTong University, School of Medicine, Shanghai, China
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Clinimetrics of the 9- and 19-Item Wearing-Off Questionnaire: A Systematic Review. PARKINSONS DISEASE 2018; 2018:5308491. [PMID: 29808113 PMCID: PMC5902048 DOI: 10.1155/2018/5308491] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Revised: 01/17/2018] [Accepted: 02/19/2018] [Indexed: 11/17/2022]
Abstract
The treatment of Parkinson's disease (PD) with dopaminergic therapy improves functionality and quality of life. However, as the disease progresses, the wearing-off phenomenon develops, which necessitates complex posology adjustment or adjuvant therapy. This phenomenon may not be well recognized, especially if it is mild or involves nonmotor symptoms. Questionnaires were developed to improve the recognition of the wearing-off phenomenon. The questionnaires consist of a list of symptoms that patients must check if they have and if the symptoms improve with medication. A recent review by the Movement Disorder Society suggested the 19-item (WOQ-19) and 9-item (WOQ-9) questionnaires as screening tools for the wearing-off phenomenon. However, there has not been a systematic review to assess the questionnaires' clinimetric properties, such as sensitivity, specificity, test-retest reliability, and responsiveness. We conducted an extensive search for studies using these two tools. We identified 3 studies using WOQ-19 and 5 studies using WOQ-9. Both questionnaires seem to have good sensitivity (0.81–1). WOQ-19 has variable specificity (0.39–0.8), depending on the number of positive items, while WOQ-9 lacks specificity (0.1–0.69). Only one study using WOQ-19 reported test-retest, and only two studies reported responsiveness. Thus, this report describes the first independent systematic review to exam quantitatively the clinimetric properties of these two questionnaires.
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Bhidayasiri R, Hattori N, Jeon B, Chen RS, Lee MK, Bajwa JA, Mok VCT, Zhang B, Syamsudin T, Tan LCS, Jamora RDG, Pisarnpong A, Poewe W. Asian perspectives on the recognition and management of levodopa ‘wearing-off’ in Parkinson’s disease. Expert Rev Neurother 2015; 15:1285-97. [DOI: 10.1586/14737175.2015.1088783] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Utility of the Japanese version of the 9-item Wearing-off Questionnaire. Clin Neurol Neurosurg 2015; 134:110-5. [DOI: 10.1016/j.clineuro.2015.04.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 04/21/2015] [Accepted: 04/26/2015] [Indexed: 11/21/2022]
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Chen H, Fang J, Li F, Gao L, Feng T. Risk factors and safe dosage of levodopa for wearing-off phenomenon in Chinese patients with Parkinson's disease. Neurol Sci 2015; 36:1217-23. [PMID: 25616444 DOI: 10.1007/s10072-015-2078-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Accepted: 01/12/2015] [Indexed: 11/28/2022]
Abstract
The objective of this study was to investigate the risk factors of wearing-off phenomenon in Parkinson's disease (PD) and propose safe dosage of levodopa to reduce wearing-off development based on Chinese cohort. Patients with PD who had taken levodopa (L-dopa) for at least 1 month were recruited. Wearing-off was diagnosed based on validated Chinese version of a patient self-rated 9-question Wearing-Off Questionnaire (WOQ-9) and clinical definition. Eleven variables (gender, disease duration at L-dopa initiation, disease duration at assessment, age at onset, age at assessment, H-Y stage, UPDRS III, L-dopa daily total dosage and dosage adjusted to weight, duration of L-dopa treatment, initial drug recipe) were included in our analysis. Univariate analysis, multivariate logistic regression analysis and decision tree classification model(DTC) were used to detect risk factors of wearing-off. Receiver operating characteristic (ROC) curve and DTC were used to investigate cut-off value of L-dopa to best predict wearing-off. Two hundred and thirty-four patients were investigated in our study, among whom 111 developed wearing-off. Patients with wearing-off tended to receive higher L-dopa dosage and endure longer duration of L-dopa treatment. L-Dopa dosage as 281 mg/day and 4.2 mg/kg/day by ROC, as well as 269 mg/day and 3.2 mg/kg/day by DTC were cut-off values for wearing-off. L-Dopa dosage and duration of L-dopa treatment were related to increased wearing-off development. Cumulative L-dopa dosage and L-dopa daily dosage were better predictive of wearing-off. Inadequate evidence was present for delayed L-dopa initiation. L-Dopa daily dosage no more than 275 mg or 4.2 mg/kg was regarded as safe.
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Affiliation(s)
- Huimin Chen
- Department of Neurology, Center for Neurodegenerative Disease, Beijing Tiantan Hospital, Capital Medical University, #6 Tian Tan Xi Li Street, 100050, Beijing, China
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Chen W, Xiao Q, Shao M, Feng T, Liu WG, Luo XG, Chen XC, Xie AM, Liu CF, Liu ZG, Liu YM, Wang J, Chen SD. Prevalence of wearing-off and dyskinesia among the patients with Parkinson's disease on levodopa therapy: a multi-center registry survey in mainland China. Transl Neurodegener 2014; 3:26. [PMID: 25671102 PMCID: PMC4323338 DOI: 10.1186/2047-9158-3-26] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Accepted: 11/26/2014] [Indexed: 01/19/2023] Open
Abstract
Objective Chronic levodopa (L-dopa) treatment in Parkinson’s disease (PD) is often associated with the development of motor complications, but the corresponding epidemiological data is rare in Chinese PD patients. The present survey was to investigate the prevalence rate of wearing-off (WO) and dyskinesia among the patients with PD in China. Methods From May 2012 to October 2012, a 3-step registry survey for wearing off (WO) and dyskinesia patients with PD receiving levodopa therapy was performed simultaneously at 28 movement disorders clinics in China. Results There were 1,558 PD patients fulfilling the inclusion criteria. Among them, 1,051 had at least one positive response of 9-item wearing off questionnaire (WOQ-9), 724 and 160 patients were finally diagnosed with WO and dyskinesia by movement disorders specialists, respectively. The overall prevalence rates of WO and dyskinesia were 46.5% (95% CI 44.0% - 48.9%) and 10.3% (95% CI 8.8% - 11.8%), respectively. The mean score of WOQ-9 for those with WO was 3.8 (SD = 1.8), with movement slowness being the most common motor symptoms and pain/aching being the most common non-motor symptoms. Better improvement of motor symptoms (n = 354, 87.8%) and long-term disease control and drug selection (n = 288, 71.5%) were the two most frequently considered factors when movement disorders specialists adjusted therapeutic strategies for patients with WO. Conclusions This survey provided the first multi-center epidemiological data of motor complications among PD patients on L-dopa therapy from mainland China. WO prevalence rate among Chinese PD patients was in line with, while dyskinesia prevalence rate was lower than previous reports from other Countries. Electronic supplementary material The online version of this article (doi:10.1186/2047-9158-3-26) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Wei Chen
- Department of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Rui Jin 2nd Road 197, Shanghai, 200025 China
| | - Qin Xiao
- Department of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Rui Jin 2nd Road 197, Shanghai, 200025 China
| | - Ming Shao
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical College, Guangzhou, China
| | - Tao Feng
- Department of Neurology, Beijing Tiantan Hospital affiliated to Capital Medical University, Beijing, China
| | - Wei-Guo Liu
- Department of Neurology, Nanjing Brain Hospital affiliated to Nanjing Medical University, Nanjing, China
| | - Xiao-Guang Luo
- Department of Neurology, The First Hospital of China Medical University, Shenyang, China
| | - Xiao-Chun Chen
- Department of Neurology, Union XieHe Hospital, Fujian Medical University, Fuzhou, China
| | - An-Mu Xie
- Department of Neurology, The Affiliated Hospital of Medical College Qingdao University, Qingdao, China
| | - Chun-Feng Liu
- Department of Neurology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Zhen-Guo Liu
- Department of Neurology, Xinhua Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yi-Ming Liu
- Department of Neurology, Qilu Hospital of Shandong University, Jinan, China
| | - Jian Wang
- Department of Neurology, Huashan Hospital affiliated to Fudan University, Shanghai, China
| | - Sheng-Di Chen
- Department of Neurology, Rui Jin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Rui Jin 2nd Road 197, Shanghai, 200025 China
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Santos JG, Chien HF, Barbosa ER. Specificity and sensibility of 9-Itens Wearing-off Questionnaire in Brazilian Parkinson disease patient sample. ARQUIVOS DE NEURO-PSIQUIATRIA 2014; 72:867-73. [PMID: 25410454 DOI: 10.1590/0004-282x20140166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Accepted: 08/12/2014] [Indexed: 11/22/2022]
Abstract
OBJECTIVE (1) To evaluate whether the Nine Items Questionnaire (WOQ-9) for the detection of wearing-off (WO) in Parkinson Disease (PD), by means of its screening ability, is a helpful tool to assist neurologists in diagnosing WO; (2) To determine the sensitivity and the specificity of a free Brazilian Portuguese translation of WOQ-9. METHOD A sample obtained by convenience included 60 patients. The WOQ-9 was answered by the patients themselves before their routine consultations. The detection of the WO by the WOQ-9 was compared with the neurologist assessment. Statistical significance was 5%. RESULTS The WOQ-9 showed sensitivity of 100%, specificity of 10.3%, positive and negative predictive values of 54.4% and 100% respectively. The identification of WO by the WOQ-9 was congruent in 54.5% of cases with neurological evaluation. CONCLUSION The WOQ-9 is a convenient screening tool to aid physicians to detect WO in PD patients, and it is a quick and easy self-administered questionnaire.
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Affiliation(s)
- Jasper Guimarães Santos
- Departamento de Neurologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo SP, Brazil
| | - Hsin Fen Chien
- Departamento de Neurologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo SP, Brazil
| | - Egberto Reis Barbosa
- Departamento de Neurologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo SP, Brazil
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Wu H, Dong F, Wang Y, Xiao Q, Yang Q, Zhao J, Quinn TJ, Chen SD, Liu J. Catechol-O-methyltransferase Val158Met polymorphism: modulation of wearing-off susceptibility in a Chinese cohort of Parkinson's disease. Parkinsonism Relat Disord 2014; 20:1094-6. [PMID: 25108642 DOI: 10.1016/j.parkreldis.2014.07.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 07/10/2014] [Accepted: 07/14/2014] [Indexed: 02/04/2023]
Abstract
Catechol-O-methyltransferase (COMT) is one of the cardinal enzymes that metabolize dopamine and other catecholamine neurotransmitters in the central and peripheral nervous system. Recent studies have shown that the impact of COMT haplotypes on the development of wearing-off phenomenon is in dispute, while the relationship between COMT haplotypes and wearing-off phenomenon in ethnic Chinese population is lacking. The purpose of this study was to characterize the correlation between the Val158Met polymorphism in the COMT gene and the motor complication "wearing-off" in Chinese PD patients. We have sequenced the COMT gene in 259 PD patients and 257 healthy controls. Our results demonstrated that Met/Met homozygosity of the COMT Val158Met polymorphism was related to a decreased risk of developing wearing-off. This finding suggests that COMT Val158Met may affect susceptibility to wearing-off in PD.
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Affiliation(s)
- Hui Wu
- Department of Neurology and Institute of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China; Department of Neurology, Minhang Hospital, Shanghai 201100, China
| | - Fangyi Dong
- Department of Neurology and Institute of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Ying Wang
- Department of Neurology and Institute of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Qin Xiao
- Department of Neurology and Institute of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Qiong Yang
- Department of Neurology and Institute of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Jing Zhao
- Department of Neurology, Minhang Hospital, Shanghai 201100, China
| | - Thomas J Quinn
- Department of Radiation Oncology, Albert Einstein College of Medicine of Yeshiva University, NY 10461, USA
| | - Sheng-di Chen
- Department of Neurology and Institute of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
| | - Jun Liu
- Department of Neurology and Institute of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
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