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Tuominen RK, Renko JM. Biomarkers of Parkinson's disease in perspective of early diagnosis and translation of neurotrophic therapies. Basic Clin Pharmacol Toxicol 2024; 135:271-284. [PMID: 38973499 DOI: 10.1111/bcpt.14042] [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] [Received: 10/27/2023] [Revised: 04/15/2024] [Accepted: 05/28/2024] [Indexed: 07/09/2024]
Abstract
Parkinson's disease (PD) is a common neurodegenerative disorder characterized by progressive loss of dopamine neurons and aberrant deposits of alpha-synuclein (α-syn) in the brain. The symptomatic treatment is started after the onset of motor manifestations in a late stage of the disease. Preclinical studies with neurotrophic factors (NTFs) show promising results of disease-modifying neuroprotective or even neurorestorative effects. Four NTFs have entered phase I-II clinical trials with inconclusive outcomes. This is not surprising because the preclinical evidence is from acute early-stage disease models, but the clinical trials included advanced PD patients. To conclude the value of NTF therapies, clinical studies should be performed in early-stage patients with prodromal symptoms, that is, before motor manifestations. In this review, we summarize currently available diagnostic and prognostic biomarkers that could help identify at-risk patients benefiting from NTF therapies. Focus is on biochemical and imaging biomarkers, but also other modalities are discussed. Neuroimaging is the most important diagnostic tool today, but α-syn imaging is not yet viable. Modern techniques allow measuring various forms of α-syn in cerebrospinal fluid, blood, saliva, and skin. Digital biomarkers and artificial intelligence offer new means for early diagnosis and longitudinal follow-up of degenerative brain diseases.
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Affiliation(s)
- Raimo K Tuominen
- Drug Research Program, Division of Pharmacology and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
| | - Juho-Matti Renko
- Drug Research Program, Division of Pharmacology and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
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Garcia Santa Cruz B, Husch A, Hertel F. Machine learning models for diagnosis and prognosis of Parkinson's disease using brain imaging: general overview, main challenges, and future directions. Front Aging Neurosci 2023; 15:1216163. [PMID: 37539346 PMCID: PMC10394631 DOI: 10.3389/fnagi.2023.1216163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 06/28/2023] [Indexed: 08/05/2023] Open
Abstract
Parkinson's disease (PD) is a progressive and complex neurodegenerative disorder associated with age that affects motor and cognitive functions. As there is currently no cure, early diagnosis and accurate prognosis are essential to increase the effectiveness of treatment and control its symptoms. Medical imaging, specifically magnetic resonance imaging (MRI), has emerged as a valuable tool for developing support systems to assist in diagnosis and prognosis. The current literature aims to improve understanding of the disease's structural and functional manifestations in the brain. By applying artificial intelligence to neuroimaging, such as deep learning (DL) and other machine learning (ML) techniques, previously unknown relationships and patterns can be revealed in this high-dimensional data. However, several issues must be addressed before these solutions can be safely integrated into clinical practice. This review provides a comprehensive overview of recent ML techniques analyzed for the automatic diagnosis and prognosis of PD in brain MRI. The main challenges in applying ML to medical diagnosis and its implications for PD are also addressed, including current limitations for safe translation into hospitals. These challenges are analyzed at three levels: disease-specific, task-specific, and technology-specific. Finally, potential future directions for each challenge and future perspectives are discussed.
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Affiliation(s)
| | - Andreas Husch
- Imaging AI Group, Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| | - Frank Hertel
- National Department of Neurosurgery, Centre Hospitalier de Luxembourg, Luxembourg, Luxembourg
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3
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Bougea A, Svenningsson P, Markaki I, Hye A, Mondello S. Editorial: Body fluid biomarkers in neurodegenerative studies: Novel insights into pathophysiology to support clinical practice and drug development. Front Neurol 2023; 14:1103116. [PMID: 36733314 PMCID: PMC9887318 DOI: 10.3389/fneur.2023.1103116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Accepted: 01/02/2023] [Indexed: 01/18/2023] Open
Affiliation(s)
- Anastasia Bougea
- First Department of Neurology, Eginition Hospital, National and Kapodistrian University of Athens, Athens, Greece,*Correspondence: Anastasia Bougea ✉
| | - Per Svenningsson
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden,Basic and Clinical Neuroscience, King's College London, London, United Kingdom
| | - Ioanna Markaki
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden,Center of Neurology, Academic Specialist Center, Stockholm, Sweden
| | - Abdul Hye
- Department of Old Age Psychiatry, Institute of Psychiatry, Psychology, and Neuroscience, King's College London, London, United Kingdom
| | - Stefania Mondello
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging University of Messina, Messina, Italy
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Umemura Y, Khan B, Weill BJ, Buthorn JJ, Skakodub A, Ridder AJ, Nevel KS, Sun Y, Boire A. Discordance Between Perceptions and Experience of Lumbar Puncture: A Prospective Study. Neurol Clin Pract 2022; 12:344-351. [PMID: 36380890 PMCID: PMC9647808 DOI: 10.1212/cpj.0000000000200061] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 04/26/2022] [Indexed: 01/13/2023]
Abstract
Background and Objectives Novel diagnostic techniques and neurologic biomarkers have greatly expanded clinical indications for CSF studies. CSF is most commonly obtained via lumbar puncture (LP). Although it is generally believed that LPs are well tolerated, there is a lack of supportive data for this claim, and patients anticipate LP to be painful. The objective of this study was to prospectively investigate discordance between patient perception and tolerability of LP. Methods Adult patients were surveyed before and after LP regarding their perceptions and experience of LP. Physician perceptions were gathered through a web-based survey. Relative risk and Spearman correlation were used to assess the relationship between responses. Paired binomial and paired ordinal responses were compared by McNemar and paired Wilcoxon rank-sum tests. Results A total of 178 patients completed the surveys. About half of the patients (58%) reported anxiety pre-LP, at median 3.0 of 10. Physicians overpredicted patients' pre-LP anxiety (median score 5.0, p < 0.001). Experienced pain was significantly less than predicted pain (median scores 0 and 3.0, respectively, p < 0.001). Patients who predicted pain were more likely to report pain from LP (relative risk [RR] 1.3). Predicting pain was also correlated with anxiety before LP (p < 0.001). Discussion LP was generally well tolerated. The majority of patients experienced minimal pain. Anticipation of pain was correlated with both feeling anxious and experiencing pain. The results of this study can be used to reassure patients and providers that LP is indeed not as painful as imagined, which may both reduce pre-LP anxiety and improve LP tolerability.
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Affiliation(s)
- Yoshie Umemura
- Departments of Neurology (YU, BK, AJR, YS), and Radiation Oncology and Biostatistics (YS), University of Michigan, Ann Arbor; and Human Oncology and Pathogenesis Program (BJW, JJB, AS, KSN), Brain Tumor Center and Department of Neurology (AB), Memorial Sloan Kettering Cancer Center, New York
| | - Baber Khan
- Departments of Neurology (YU, BK, AJR, YS), and Radiation Oncology and Biostatistics (YS), University of Michigan, Ann Arbor; and Human Oncology and Pathogenesis Program (BJW, JJB, AS, KSN), Brain Tumor Center and Department of Neurology (AB), Memorial Sloan Kettering Cancer Center, New York
| | - Benjamin J Weill
- Departments of Neurology (YU, BK, AJR, YS), and Radiation Oncology and Biostatistics (YS), University of Michigan, Ann Arbor; and Human Oncology and Pathogenesis Program (BJW, JJB, AS, KSN), Brain Tumor Center and Department of Neurology (AB), Memorial Sloan Kettering Cancer Center, New York
| | - Justin J Buthorn
- Departments of Neurology (YU, BK, AJR, YS), and Radiation Oncology and Biostatistics (YS), University of Michigan, Ann Arbor; and Human Oncology and Pathogenesis Program (BJW, JJB, AS, KSN), Brain Tumor Center and Department of Neurology (AB), Memorial Sloan Kettering Cancer Center, New York
| | - Anna Skakodub
- Departments of Neurology (YU, BK, AJR, YS), and Radiation Oncology and Biostatistics (YS), University of Michigan, Ann Arbor; and Human Oncology and Pathogenesis Program (BJW, JJB, AS, KSN), Brain Tumor Center and Department of Neurology (AB), Memorial Sloan Kettering Cancer Center, New York
| | - Andrew J Ridder
- Departments of Neurology (YU, BK, AJR, YS), and Radiation Oncology and Biostatistics (YS), University of Michigan, Ann Arbor; and Human Oncology and Pathogenesis Program (BJW, JJB, AS, KSN), Brain Tumor Center and Department of Neurology (AB), Memorial Sloan Kettering Cancer Center, New York
| | - Kathryn S Nevel
- Departments of Neurology (YU, BK, AJR, YS), and Radiation Oncology and Biostatistics (YS), University of Michigan, Ann Arbor; and Human Oncology and Pathogenesis Program (BJW, JJB, AS, KSN), Brain Tumor Center and Department of Neurology (AB), Memorial Sloan Kettering Cancer Center, New York
| | - Yilun Sun
- Departments of Neurology (YU, BK, AJR, YS), and Radiation Oncology and Biostatistics (YS), University of Michigan, Ann Arbor; and Human Oncology and Pathogenesis Program (BJW, JJB, AS, KSN), Brain Tumor Center and Department of Neurology (AB), Memorial Sloan Kettering Cancer Center, New York
| | - Adrienne Boire
- Departments of Neurology (YU, BK, AJR, YS), and Radiation Oncology and Biostatistics (YS), University of Michigan, Ann Arbor; and Human Oncology and Pathogenesis Program (BJW, JJB, AS, KSN), Brain Tumor Center and Department of Neurology (AB), Memorial Sloan Kettering Cancer Center, New York
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Trifonova OP, Maslov DL, Balashova EE, Urazgildeeva GR, Abaimov DA, Fedotova EY, Poleschuk VV, Illarioshkin SN, Lokhov PG. Parkinson's Disease: Available Clinical and Promising Omics Tests for Diagnostics, Disease Risk Assessment, and Pharmacotherapy Personalization. Diagnostics (Basel) 2020; 10:E339. [PMID: 32466249 PMCID: PMC7277996 DOI: 10.3390/diagnostics10050339] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/21/2020] [Accepted: 05/22/2020] [Indexed: 12/15/2022] Open
Abstract
Parkinson's disease is the second most frequent neurodegenerative disease, representing a significant medical and socio-economic problem. Modern medicine still has no answer to the question of why Parkinson's disease develops and whether it is possible to develop an effective system of prevention. Therefore, active work is currently underway to find ways to assess the risks of the disease, as well as a means to extend the life of patients and improve its quality. Modern studies aim to create a method of assessing the risk of occurrence of Parkinson's disease (PD), to search for the specific ways of correction of biochemical disorders occurring in the prodromal stage of Parkinson's disease, and to personalize approaches to antiparkinsonian pharmacotherapy. In this review, we summarized all available clinically approved tests and techniques for PD diagnostics. Then, we reviewed major improvements and recent advancements in genomics, transcriptomics, and proteomics studies and application of metabolomics in PD research, and discussed the major metabolomics findings for diagnostics and therapy of the disease.
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Affiliation(s)
- Oxana P. Trifonova
- Laboratory of mass spectrometry-based metabolomics diagnostics, Institute of Biomedical Chemistry, 10 building 8, Pogodinskaya street, 119121 Moscow, Russia; (D.L.M.); (E.E.B.); (P.G.L.)
| | - Dmitri L. Maslov
- Laboratory of mass spectrometry-based metabolomics diagnostics, Institute of Biomedical Chemistry, 10 building 8, Pogodinskaya street, 119121 Moscow, Russia; (D.L.M.); (E.E.B.); (P.G.L.)
| | - Elena E. Balashova
- Laboratory of mass spectrometry-based metabolomics diagnostics, Institute of Biomedical Chemistry, 10 building 8, Pogodinskaya street, 119121 Moscow, Russia; (D.L.M.); (E.E.B.); (P.G.L.)
| | - Guzel R. Urazgildeeva
- 5th Neurological Department (Department of Neurogenetics), Research Centre of Neurology, Volokolamskoe shosse, 80, 125367 Moscow, Russia; (G.R.U.); (D.A.A.); (E.Y.F.); (V.V.P.); (S.N.I.)
| | - Denis A. Abaimov
- 5th Neurological Department (Department of Neurogenetics), Research Centre of Neurology, Volokolamskoe shosse, 80, 125367 Moscow, Russia; (G.R.U.); (D.A.A.); (E.Y.F.); (V.V.P.); (S.N.I.)
| | - Ekaterina Yu. Fedotova
- 5th Neurological Department (Department of Neurogenetics), Research Centre of Neurology, Volokolamskoe shosse, 80, 125367 Moscow, Russia; (G.R.U.); (D.A.A.); (E.Y.F.); (V.V.P.); (S.N.I.)
| | - Vsevolod V. Poleschuk
- 5th Neurological Department (Department of Neurogenetics), Research Centre of Neurology, Volokolamskoe shosse, 80, 125367 Moscow, Russia; (G.R.U.); (D.A.A.); (E.Y.F.); (V.V.P.); (S.N.I.)
| | - Sergey N. Illarioshkin
- 5th Neurological Department (Department of Neurogenetics), Research Centre of Neurology, Volokolamskoe shosse, 80, 125367 Moscow, Russia; (G.R.U.); (D.A.A.); (E.Y.F.); (V.V.P.); (S.N.I.)
| | - Petr G. Lokhov
- Laboratory of mass spectrometry-based metabolomics diagnostics, Institute of Biomedical Chemistry, 10 building 8, Pogodinskaya street, 119121 Moscow, Russia; (D.L.M.); (E.E.B.); (P.G.L.)
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Mondello S, Salama MM, Mohamed WMY, Kobeissy FH. Editorial: Biomarkers in Neurology. Front Neurol 2020; 11:190. [PMID: 32256443 PMCID: PMC7093560 DOI: 10.3389/fneur.2020.00190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 02/28/2020] [Indexed: 11/13/2022] Open
Affiliation(s)
- Stefania Mondello
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Messina, Italy
| | - Mohamed Mosaad Salama
- Institute of Global Health and Human Ecology, American University in Cairo, Cairo, Egypt
| | - Wael M Y Mohamed
- Clinical Pharmacology Department, Menoufia Medical School, Menoufia University, Al Minufya, Egypt.,Department of Basic Medical Science, Kulliyyah of Medicine, International Islamic University, Kuantan, Malaysia
| | - Firas H Kobeissy
- Department of Emergency Medicine, University of Florida, Gainesville, FL, United States.,Department of Biochemistry and Molecular Genetics, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
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Cerebrospinal fluid levels of alpha-synuclein, amyloid β, tau, phosphorylated tau, and neuron-specific enolase in patients with Parkinson's disease, dementia with Lewy bodies or other neurological disorders: Their relationships with cognition and nuclear medicine imaging findings. Neurosci Lett 2020; 715:134564. [PMID: 31733322 DOI: 10.1016/j.neulet.2019.134564] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 09/29/2019] [Accepted: 10/14/2019] [Indexed: 11/21/2022]
Abstract
Parkinson's disease (PD) and dementia with Lewy bodies (DLB) are common neurodegenerative disorders, but no established biochemical markers for these diseases have been identified. We enrolled 78 subjects (27 patients with PD/DLB, 34 patients with non-PD/DLB neurodegenerative disorders [non-PD/DLB], and 17 controls). Cerebrospinal fluid (CSF) was collected via the standard lumbar puncture technique. The CSF levels of alpha-synuclein, amyloid β40, amyloid β42, tau, phosphorylated tau (p-tau), neuron-specific enolase (NSE), and hemoglobin were measured with enzyme-linked immunosorbent assays. Dopamine transporter imaging with 123I-ioflupane was also performed. The PD/DLB patients exhibited significantly lower CSF alpha-synuclein levels than non-PD/DLB group. Significantly elevated CSF levels of tau, p-tau, and NSE were detected in the non-PD/DLB group. Multivariate analysis revealed that the mini-mental state examination score was correlated with the CSF amyloid β42 level. The specific binding ratio on 123I-ioflupane imaging was decreased in the PD/DLB group, but it was not correlated with the CSF alpha-synuclein level. These results indicate that (1) the CSF alpha-synuclein level is a useful biomarker of PD/DLB; (2) the CSF levels of tau, p-tau, and NSE can be used to discriminate PD/DLB from non-PD/DLB; and (3) the CSF amyloid β42 level is an independent predictor of cognitive decline in neurological disorders.
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Alirezaei Z, Pourhanifeh MH, Borran S, Nejati M, Mirzaei H, Hamblin MR. Neurofilament Light Chain as a Biomarker, and Correlation with Magnetic Resonance Imaging in Diagnosis of CNS-Related Disorders. Mol Neurobiol 2020; 57:469-491. [PMID: 31385229 PMCID: PMC6980520 DOI: 10.1007/s12035-019-01698-3] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 07/09/2019] [Indexed: 12/11/2022]
Abstract
The search for diagnostic and prognostic biomarkers for neurodegenerative conditions is of high importance, since these disorders may present difficulties in differential diagnosis. Biomarkers with high sensitivity and specificity are required. Neurofilament light chain (NfL) is a unique biomarker related to axonal damage and neural cell death, which is elevated in a number of neurological disorders, and can be detected in cerebrospinal fluid (CSF), as well as blood, serum, or plasma samples. Although the NfL concentration in CSF is higher than that in blood, blood measurement may be easier in practice due to its lesser invasiveness, reproducibility, and convenience. Many studies have investigated NfL in both CSF and serum/plasma as a potential biomarker of neurodegenerative disorders. Neuroimaging biomarkers can also potentially improve detection of CNS-related disorders at an early stage. Magnetic resonance imaging (MRI) and diffusion tensor imaging (DTI) are sensitive techniques to visualize neuroaxonal loss. Therefore, investigating the combination of NfL levels with indices extracted from MRI and DTI scans could potentially improve diagnosis of CNS-related disorders. This review summarizes the evidence for NfL being a reliable biomarker in the early detection and disease management in several CNS-related disorders. Moreover, we highlight the correlation between MRI and NfL and ask whether they can be combined.
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Affiliation(s)
- Zahra Alirezaei
- Department of Medical Physics, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Hossein Pourhanifeh
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Islamic Republic of Iran
| | - Sarina Borran
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Majid Nejati
- Anatomical Sciences Research Center, Kashan University of Medical Sciences, Kashan, Iran
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Islamic Republic of Iran.
| | - Michael R Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, 40 Blossom Street, Boston, MA, 02114, USA.
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Chen X, Niu J, Peng R, Song Y, Xu N, Zhang Y. The early diagnosis of Parkinson's disease through combined biomarkers. Acta Neurol Scand 2019; 140:268-273. [PMID: 31190374 DOI: 10.1111/ane.13140] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 06/04/2019] [Accepted: 06/07/2019] [Indexed: 01/11/2023]
Abstract
OBJECTIVE This study primarily aims to explore the value of combining the measurement of plasma α-synuclein oligomer levels with enhanced T2 star-weighted angiography (ESWAN) in the early diagnosis of Parkinson's disease. METHODS Sixty patients with early Parkinson's disease and 30 normal adults, with similar ages and genders, were enrolled in the study. Their levels of plasma α-synuclein oligomers were measured, and ESWAN was performed. The amplitudes, phases and R2* values of the head, body and tail of the ipsilateral and contralateral substantia nigra pars compacta (SNc) were measured, at the side of the limb with severe symptoms or early symptoms. The receiver operating characteristic (ROC) curve was used to explore the value of these indexes in the early diagnosis of Parkinson's disease. RESULTS The plasma level of α-synuclein oligomer was significantly higher in the experimental group than in the control group (P < 0.05). The amplitude values of the head and tail of contralateral SNcs were significantly lower in the experimental group than in the control group (P < 0.05). In the single-index assessment, the serum α-synuclein oligomer had the highest specificity (70%), while the sensitivity of the amplitude of the head and tail of the contralateral SNc was 75% and 80%, respectively. The area under the curve, for the combination of these three indicators, was 0.827, diagnostic efficiency was particularly high, and sensitivity and specificity both reached 80%. CONCLUSION The combined detection of plasma α-synuclein oligomer and amplitude of the head and tail of the SNc has high diagnostic specificity and sensitivity.
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Affiliation(s)
- Xin‐Qiao Chen
- Department of Neurology The Second Affiliated Hospital of Xiamen Medical College Xiamen China
| | - Jian‐Ping Niu
- Department of Neurology The Second Affiliated Hospital of Xiamen Medical College Xiamen China
| | - Rui‐Qiang Peng
- Department of Neurology The Second Affiliated Hospital of Xiamen Medical College Xiamen China
| | - Ye‐Hua Song
- Department of Neurology The Second Affiliated Hospital of Xiamen Medical College Xiamen China
| | - Na Xu
- Department of Neurology The Second Affiliated Hospital of Xiamen Medical College Xiamen China
| | - Yi‐Wen Zhang
- Department of Neurology The Second Affiliated Hospital of Xiamen Medical College Xiamen China
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Unequivocal Biomarker for Parkinson’s Disease: A Hunt that Remains a Pester. Neurotox Res 2019; 36:627-644. [DOI: 10.1007/s12640-019-00080-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 06/17/2019] [Accepted: 06/19/2019] [Indexed: 12/14/2022]
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He R, Yan X, Guo J, Xu Q, Tang B, Sun Q. Recent Advances in Biomarkers for Parkinson's Disease. Front Aging Neurosci 2018; 10:305. [PMID: 30364199 PMCID: PMC6193101 DOI: 10.3389/fnagi.2018.00305] [Citation(s) in RCA: 96] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Accepted: 09/14/2018] [Indexed: 02/04/2023] Open
Abstract
Parkinson's disease (PD) is one of the common progressive neurodegenerative disorders with several motor and non-motor symptoms. Most of the motor symptoms may appear at a late stage where most of the dopaminergic neurons have been already damaged. In order to provide better clinical intervention and treatment at the onset of disease, it is imperative to find accurate biomarkers for early diagnosis, including prodromal diagnosis and preclinical diagnosis. At the same time, these reliable biomarkers can also be utilized to monitor the progress of the disease. In this review article, we will discuss recent advances in the development of PD biomarkers from different aspects, including clinical, biochemical, neuroimaging and genetic aspects. Although various biomarkers for PD have been developed so far, their specificity and sensitivity are not ideal when applied individually. So, the combination of multimodal biomarkers will greatly improve the diagnostic accuracy and facilitate the implementation of personalized medicine.
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Affiliation(s)
- Runcheng He
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Xinxiang Yan
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
- Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
| | - Jifeng Guo
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
- Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, China
- Parkinson’s Disease Center of Beijing Institute for Brain Disorders, Beijing, China
- Collaborative Innovation Center for Brain Science, Shanghai, China
- Collaborative Innovation Center for Genetics and Development, Shanghai, China
| | - Qian Xu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
- Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
| | - Beisha Tang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
- Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, China
- Parkinson’s Disease Center of Beijing Institute for Brain Disorders, Beijing, China
- Collaborative Innovation Center for Brain Science, Shanghai, China
- Collaborative Innovation Center for Genetics and Development, Shanghai, China
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
| | - Qiying Sun
- National Clinical Research Center for Geriatric Disorders, Changsha, China
- Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
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van Rumund A, Aerts MB, Esselink RAJ, Meijer FJA, Verbeek MM, Bloem BR. Parkinson's Disease Diagnostic Observations (PADDO): study rationale and design of a prospective cohort study for early differentiation of parkinsonism. BMC Neurol 2018; 18:69. [PMID: 29764386 PMCID: PMC5954463 DOI: 10.1186/s12883-018-1072-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 05/04/2018] [Indexed: 11/28/2022] Open
Abstract
Background Differentiation of Parkinson’s disease (PD) from the various types of atypical parkinsonism (AP) such as multiple system atrophy (MSA), progressive supranuclear palsy (PSP), dementia with Lewy bodies (DLB), corticobasal syndrome (CBS) and vascular parkinsonism (VP), can be challenging, especially early in the disease course when symptoms overlap. A major unmet need in the diagnostic workup of these disorders is a diagnostic tool that differentiates the various disorders, preferably in the earliest disease stages when the clinical presentation is similar. Many diagnostic tests have been evaluated, but their added value was studied mostly in retrospective case-control studies that included patients with a straightforward clinical diagnosis. Here, we describe the design of a prospective cohort study in patients with parkinsonism in an early disease stage who have an uncertain clinical diagnosis. Our aim is to evaluate the diagnostic accuracy of (1) detailed clinical examination by a movement disorder specialist, (2) magnetic resonance imaging (MRI) techniques and (3) cerebrospinal fluid (CSF) biomarkers. Methods/design Patients with parkinsonism with an uncertain clinical diagnosis and a disease course less than three years will be recruited. Patients will undergo extensive neurological examination, brain MRI including conventional and advanced sequences, and a lumbar puncture. The diagnosis (including level of certainty) will be defined by a movement disorders expert, neuroradiologist and neurochemist based on clinical data, MRI results and CSF results, respectively. The clinical diagnosis after three years’ follow-up will serve as the “gold standard” reference diagnosis, based on consensus criteria and as established by two movement disorder specialists (blinded to the test results). Diagnostic accuracy of individual instruments and added value of brain MRI and CSF analysis after evaluation by a movement disorder expert will be calculated, expressed as the change in percentage of individuals that are correctly diagnosed with PD or AP. Discussion This study will yield new insights into the diagnostic value of clinical evaluation by a movement disorder specialist, brain MRI and CSF analysis in discriminating PD from AP in early disease stages. The outcome has the potential to help clinicians in choosing the optimal diagnostic strategy for patients with an uncertain clinical diagnosis. Trial registration NCT01249768, registered November 26 2010. Electronic supplementary material The online version of this article (10.1186/s12883-018-1072-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Anouke van Rumund
- Radboud university medical center, Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, P.O.Box 9101, 6500 HB, Nijmegen (935), The Netherlands.
| | - Marjolein B Aerts
- Radboud university medical center, Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, P.O.Box 9101, 6500 HB, Nijmegen (935), The Netherlands
| | - Rianne A J Esselink
- Radboud university medical center, Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, P.O.Box 9101, 6500 HB, Nijmegen (935), The Netherlands
| | - Frederick J A Meijer
- Radboud university medical center, Department of Radiology and Nuclear medicine, Donders Institute for Brain, Cognition and Behaviour, P.O.Box 9101, 6500 HB, Nijmegen (766), The Netherlands
| | - Marcel M Verbeek
- Radboud university medical center, Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, P.O.Box 9101, 6500 HB, Nijmegen (935), The Netherlands.,Radboud university medical center, Department of Laboratory Medicine Nijmegen, Donders Institute for Brain, Cognition and Behaviour, P.O.Box 9101, 6500 HB, Nijmegen (830), The Netherlands
| | - Bastiaan R Bloem
- Radboud university medical center, Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, P.O.Box 9101, 6500 HB, Nijmegen (935), The Netherlands
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13
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Goldman JG, Andrews H, Amara A, Naito A, Alcalay RN, Shaw LM, Taylor P, Xie T, Tuite P, Henchcliffe C, Hogarth P, Frank S, Saint‐Hilaire M, Frasier M, Arnedo V, Reimer AN, Sutherland M, Swanson‐Fischer C, Gwinn K, Kang UJ. Cerebrospinal fluid, plasma, and saliva in the BioFIND study: Relationships among biomarkers and Parkinson's disease Features. Mov Disord 2017; 33:282-288. [PMID: 29205509 PMCID: PMC5836918 DOI: 10.1002/mds.27232] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 10/08/2017] [Accepted: 10/16/2017] [Indexed: 01/05/2023] Open
Abstract
OBJECTIVE Examine relationships among neurodegenerative biomarkers and PD motor and nonmotor symptoms. BACKGROUND CSF alpha-synuclein is decreased in PD versus healthy controls, but whether plasma and saliva alpha-synuclein differentiate these groups is controversial. Correlations of alpha-synuclein among biofluids (CSF, plasma, saliva) or biomarkers (eg, beta-amyloid, tau [total, phosphorylated]) are not fully understood. The relationships of these biomarkers with PD clinical features remain unclear. METHODS BioFIND, a cross-sectional, observational study, examines clinical and biomarker characteristics in moderate-advanced PD and matched healthy controls. We compared alpha-synuclein concentrations across diagnosis, biofluids, and CSF biomarkers. Correlations of CSF biomarkers and MDS-UPDRS, motor phenotype, MoCA, and rapid eye movement sleep behavior disorder questionnaire scores in PD were examined. RESULTS CSF alpha-synuclein was lower in PD versus controls (P = .01), controlling for age, gender, and education. Plasma and saliva alpha-synuclein did not differ between PD and controls, and alpha-synuclein did not significantly correlate among biofluids. CSF beta-amyloid1-42 was lower in PD versus controls (P < .01), and correlated weakly with MoCA recall scores (r = 0.23, P = .02). CSF alpha-synuclein was lower in the postural instability/gait difficulty phenotype than other motor phenotypes (P < .01). No CSF biomarkers predicted or correlated with total motor or rapid eye movement sleep behavior disorder scores. CSF alpha-synuclein correlated with beta-amyloid1-42 , total-tau, and phosphorylated-tau (r = 0.41, 0.81, 0.43, respectively; Ps < .001). CONCLUSION Lower CSF alpha-synuclein is associated with diagnosis and motor phenotype in moderate-advanced PD. Plasma and saliva alpha-synuclein neither correlate with CSF alpha-synuclein, nor distinguish PD from controls. CSF beta-amyloid1-42 remains a potential biomarker for cognitive impairment in PD. © 2017 The Authors. Movement Disorders published by Wiley Periodicals, Inc. on behalf of International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Jennifer G. Goldman
- Section of Parkinson Disease and Movement Disorders, Department of Neurological SciencesRush University Medical CenterChicagoIllinoisUSA
| | - Howard Andrews
- Division of Movement Disorders, Department of NeurologyColumbia University Medical CenterNew YorkNew YorkUSA
| | - Amy Amara
- Department of NeurologyUniversity of Alabama at BirminghamBirminghamAlabamaUSA
| | - Anna Naito
- The Michael J. Fox Foundation for Parkinson's ResearchNew YorkNew YorkUSA
| | - Roy N. Alcalay
- Division of Movement Disorders, Department of NeurologyColumbia University Medical CenterNew YorkNew YorkUSA
| | - Leslie M. Shaw
- Department of Pathology & Laboratory Medicine, Institute on Aging, Center for Neurodegenerative Disease ResearchUniversity of Pennsylvania School of MedicinePhiladelphiaPAUSA
| | | | - Tao Xie
- Parkinson Disease and Movement Disorder Program, Department of NeurologyUniversity of ChicagoChicagoIllinoisUSA
| | - Paul Tuite
- Department of NeurologyUniversity of MinnesotaMinneapolisMinnesotaUSA
| | | | - Penelope Hogarth
- Department of Molecular and Medical GeneticsOregon Health & Science UniversityPortlandOregonUSA
| | - Samuel Frank
- Department of NeurologyBoston University School of MedicineBostonMassachusettsUSA
| | | | - Mark Frasier
- The Michael J. Fox Foundation for Parkinson's ResearchNew YorkNew YorkUSA
| | - Vanessa Arnedo
- The Michael J. Fox Foundation for Parkinson's ResearchNew YorkNew YorkUSA
| | - Alyssa N. Reimer
- The Michael J. Fox Foundation for Parkinson's ResearchNew YorkNew YorkUSA
| | - Margaret Sutherland
- National Institute of Neurological Disorders and StrokeNational Institutes of HealthBethesdaMarylandUSA
| | - Christine Swanson‐Fischer
- National Institute of Neurological Disorders and StrokeNational Institutes of HealthBethesdaMarylandUSA
| | - Katrina Gwinn
- National Institute of Neurological Disorders and StrokeNational Institutes of HealthBethesdaMarylandUSA
| | | | - Un Jung Kang
- Division of Movement Disorders, Department of NeurologyColumbia University Medical CenterNew YorkNew YorkUSA
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14
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Schiavone S, Neri M, Trabace L, Turillazzi E. The NADPH oxidase NOX2 mediates loss of parvalbumin interneurons in traumatic brain injury: human autoptic immunohistochemical evidence. Sci Rep 2017; 7:8752. [PMID: 28821783 PMCID: PMC5562735 DOI: 10.1038/s41598-017-09202-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 07/24/2017] [Indexed: 12/22/2022] Open
Abstract
Pharmacological interventions for traumatic brain injury (TBI) are limited. Together with parvalbumin (PV) loss, increased production of reactive oxygen species (ROS) by the NADPH oxidase NOX enzymes represents a key step in TBI. Here, we investigated the contribution of NOX2-derived oxidative stress to the loss of PV immunoreactivity associated to TBI, performing immunohistochemistry for NOX2, 8-hydroxy-2′-deoxyguanosine (8OHdG) and PV on post mortem brain samples of subjects died following TBI, subjects died from spontaneous intracerebral hemorrhage (SICH) and controls (CTRL). We detected an increased NOX2 expression and 8OHdG immunoreactivity in subjects died from TBI with respect to CTRL and SICH. NOX2 increase was mainly observed in GABAergic PV-positive interneurons, with a minor presence in microglia. No significant differences in other NADPH oxidase isoforms (NOX1 and NOX4) were detected among experimental groups. NOX2-derived oxidative stress elevation appeared a specific TBI-induced phenomenon, as no alterations in the nitrosative pathway were detected. Our results suggest that NOX2-derived oxidative stress might play a crucial role in the TBI-induced loss of PV-positive interneurons.
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Affiliation(s)
- Stefania Schiavone
- Department of Clinical and Experimental Medicine, University of Foggia, Via Napoli 20, 71122, Foggia, Italy
| | - Margherita Neri
- Department of Clinical and Experimental Medicine, University of Foggia, Via Napoli 20, 71122, Foggia, Italy
| | - Luigia Trabace
- Department of Clinical and Experimental Medicine, University of Foggia, Via Napoli 20, 71122, Foggia, Italy.
| | - Emanuela Turillazzi
- Department of Clinical and Experimental Medicine, University of Foggia, Via Napoli 20, 71122, Foggia, Italy
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Abstract
INTRODUCTION Parkinson's disease (PD) is an insidious disorder affecting more than 1-2% of the population over the age of 65. Understanding the etiology of PD may create opportunities for developing new treatments. Genomic and transcriptomic studies are useful, but do not provide evidence for the actual status of the disease. Conversely, proteomic studies deal with proteins, which are real time players, and can hence provide information on the dynamic nature of the affected cells. The number of publications relating to the proteomics of PD is vast. Therefore, there is a need to evaluate the current proteomics literature and establish the connections between the past and the present to foresee the future. Areas covered: PubMed and Web of Science were used to retrieve the literature associated with PD proteomics. Studies using human samples, model organisms and cell lines were selected and reviewed to highlight their contributions to PD. Expert commentary: The proteomic studies associated with PD achieved only limited success in facilitating disease diagnosis, monitoring and progression. A global system biology approach using new models is needed. Future research should integrate the findings of proteomics with other omics data to facilitate both early diagnosis and the treatment of PD.
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Affiliation(s)
- Murat Kasap
- a Department of Medical Biology/DEKART Proteomics Laboratory , Kocaeli University Medical School , Kocaeli , Turkey
| | - Gurler Akpinar
- a Department of Medical Biology/DEKART Proteomics Laboratory , Kocaeli University Medical School , Kocaeli , Turkey
| | - Aylin Kanli
- a Department of Medical Biology/DEKART Proteomics Laboratory , Kocaeli University Medical School , Kocaeli , Turkey
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16
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Gao R, Zhang G, Chen X, Yang A, Smith G, Wong DF, Zhou Y. CSF Biomarkers and Its Associations with 18F-AV133 Cerebral VMAT2 Binding in Parkinson's Disease-A Preliminary Report. PLoS One 2016; 11:e0164762. [PMID: 27764160 PMCID: PMC5072678 DOI: 10.1371/journal.pone.0164762] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 09/30/2016] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE Cerebrospinal fluid (CSF) biomarkers, such as α-synuclein (α-syn), amyloid beta peptide 1-42 (Aβ1-42), phosphorylated tau (181P) (p-tau), and total tau (t-tau), have long been associated with the development of Parkinson disease (PD) and other neurodegenerative diseases. In this investigation, we reported the assessment of CSF biomarkers and their correlations with vesicular monoamine transporter 2 (VMAT2) bindings measured with 18F-9-fluoropropyl-(+)-dihydrotetrabenazine (18F-AV133) that is being developed as a biomarker for PD. We test the hypothesis that monoaminergic degeneration was correlated with CSF biomarker levels in untreated PD patients. METHODS The available online data from the Parkinson's Progression Markers Initiative study (PPMI) project were collected and analyzed, which include demographic information, clinical evaluations, CSF biomarkers (α-syn, Aβ1-42, p-tau, and t-tau), 18F-AV133 brain PET, and T1 weighted MRIs. Region of interest (ROI) and voxel-wise Pearson correlation between standardized uptake value ratio (SUVR) and CSF biomarkers were calculated. RESULTS Our major findings are: 1) Compared with controls, CSF α-syn and tau levels decreased significantly in PD; 2) α-syn was closely correlated with Aβ1-42 and tau in PD, especially in early-onset patients; and 3) hypothesis-driven ROI analysis found a significant negative correlation between CSF Aβ1-42 levels and VMAT2 densities in post cingulate, left caudate, left anterior putamen, and left ventral striatum in PDs. CSF t-tau and p-tau levels were significantly negatively related to VMAT2 SUVRs in substantia nigra and left ventral striatum, respectively. Voxel-wise analysis showed that left caudate, parahippocampal gyrus, insula and temporal lobe were negatively correlated with Aβ1-42. In addition, superior frontal gyrus and transverse temporal gyrus were negatively correlated with CSF p-tau levels. CONCLUSION These results suggest that monoaminergic degeneration in PD is correlated with CSF biomarkers associated with cognitive impairment in neurodegenerative diseases including Alzheimer's disease. The association between loss of dopamine synaptic function and pathologic protein accumulations in PD indicates an important role of CSF biomarkers in PD development.
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Affiliation(s)
- Rui Gao
- Department of Nuclear Medicine, the First Affiliated Hospital of Xian Jiaotong University, Xi'an, Shaanxi 710061, China
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, United States of America
| | - Guangjian Zhang
- Department of Surgery, the First Affiliated Hospital of Xian Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Xueqi Chen
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, United States of America
- Department of Nuclear Medicine, Peking University First Hospital, Beijing 100034, China
| | - Aimin Yang
- Department of Nuclear Medicine, the First Affiliated Hospital of Xian Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Gwenn Smith
- Division of Geriatric Psychiatry and Neuropsychiatry, Johns Hopkins Bayview Medical Center, Baltimore, Maryland 21287, United States of America
| | - Dean F. Wong
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, United States of America
- Department of Psychiatry, Johns Hopkins University, Baltimore, Maryland 21205, United States of America
- Department of Neurology, Johns Hopkins University, Baltimore, Maryland 21205, United States of America
- Department of Neuroscience, Johns Hopkins University, Baltimore, Maryland 21205, United States of America
| | - Yun Zhou
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, United States of America
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Magdalinou N, Lees AJ, Zetterberg H. Cerebrospinal fluid biomarkers in parkinsonian conditions: an update and future directions. J Neurol Neurosurg Psychiatry 2014; 85:1065-75. [PMID: 24691581 PMCID: PMC4173749 DOI: 10.1136/jnnp-2013-307539] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Parkinsonian diseases comprise a heterogeneous group of neurodegenerative disorders, which show significant clinical and pathological overlap. Accurate diagnosis still largely relies on clinical acumen; pathological diagnosis remains the gold standard. There is an urgent need for biomarkers to diagnose parkinsonian disorders, particularly in the early stages when diagnosis is most difficult. In this review, several of the most promising cerebrospinal fluid candidate markers will be discussed. Their strengths and limitations will be considered together with future developments in the field.
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Affiliation(s)
- Nadia Magdalinou
- Department of Molecular Neuroscience, UCL Institute of Neurology, London, UK
| | - Andrew J Lees
- Department of Molecular Neuroscience, UCL Institute of Neurology, London, UK
| | - Henrik Zetterberg
- Department of Molecular Neuroscience, UCL Institute of Neurology, London, UK Clinical Neurochemistry Laboratory, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden
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18
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Mondello S, Tortella FC. Brain Injury Markers: Where are We? Front Neurol 2014; 5:145. [PMID: 25136331 PMCID: PMC4120680 DOI: 10.3389/fneur.2014.00145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 07/21/2014] [Indexed: 01/27/2023] Open
Affiliation(s)
- Stefania Mondello
- Department of Neurosciences, University of Messina , Messina , Italy
| | - Frank C Tortella
- Brain Trauma Neuroprotection and Neurorestoration Branch, Walter Reed Army Institute of Research , Silver Spring, MA , USA
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19
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Kuzdas-Wood D, Stefanova N, Jellinger KA, Seppi K, Schlossmacher MG, Poewe W, Wenning GK. Towards translational therapies for multiple system atrophy. Prog Neurobiol 2014; 118:19-35. [PMID: 24598411 PMCID: PMC4068324 DOI: 10.1016/j.pneurobio.2014.02.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Revised: 02/07/2014] [Accepted: 02/21/2014] [Indexed: 12/28/2022]
Abstract
Multiple system atrophy (MSA) is a fatal adult-onset neurodegenerative disorder of uncertain etiopathogenesis manifesting with autonomic failure, parkinsonism, and ataxia in any combination. The underlying neuropathology affects central autonomic, striatonigral and olivopontocerebellar pathways and it is associated with distinctive glial cytoplasmic inclusions (GCIs, Papp-Lantos bodies) that contain aggregates of α-synuclein. Current treatment options are very limited and mainly focused on symptomatic relief, whereas disease modifying options are lacking. Despite extensive testing, no neuroprotective drug treatment has been identified up to now; however, a neurorestorative approach utilizing autologous mesenchymal stem cells has shown remarkable beneficial effects in the cerebellar variant of MSA. Here, we review the progress made over the last decade in defining pathogenic targets in MSA and summarize insights gained from candidate disease-modifying interventions that have utilized a variety of well-established preclinical MSA models. We also discuss the current limitations that our field faces and suggest solutions for possible approaches in cause-directed therapies of MSA.
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Affiliation(s)
- Daniela Kuzdas-Wood
- Department of Neurology, Innsbruck Medical University, Anichstraße 35, Innsbruck 6020, Austria
| | - Nadia Stefanova
- Department of Neurology, Innsbruck Medical University, Anichstraße 35, Innsbruck 6020, Austria
| | | | - Klaus Seppi
- Department of Neurology, Innsbruck Medical University, Anichstraße 35, Innsbruck 6020, Austria
| | - Michael G Schlossmacher
- Divisions of Neuroscience and Neurology, The Ottawa Hospital Research Institute, University of Ottawa, 451 Smyth Road, RGH #1412, Ottawa, ON, K1H 8M5, Canada
| | - Werner Poewe
- Department of Neurology, Innsbruck Medical University, Anichstraße 35, Innsbruck 6020, Austria
| | - Gregor K Wenning
- Department of Neurology, Innsbruck Medical University, Anichstraße 35, Innsbruck 6020, Austria.
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20
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Abstract
Purpose of review This update discusses novel aspects on genetics, diagnosis, and treatments of atypical parkinsonism published over the past 2 years. Recent findings A genome-wide association study identified new genetic risk factors for progressive supranuclear palsy and new genetic conditions presenting with atypical parkinsonism have been described. The clinical criteria for diagnosis of corticobasal degeneration have been revised, and for progressive supranuclear palsy are under revision. Novel molecular techniques to identify possible biomarkers, as in other neurodegenerative disorders, have started being studied on atypical parkinsonian conditions, and although preliminary results seem promising, further studies are urgently warranted. Therapeutic trials based on disease-specific targets have shown no clinical improvement. Summary The knowledge obtained recently on atypical parkinsonian conditions points out the major deficits in this field. With the expanding phenotypical spectrum of atypical parkinsonian conditions, the early identification of patients has become difficult. The inability of conventional methods to identify these disorders earlier and better than clinicians, and the recent failure of promising therapeutic compounds, highlight the fact that the lack of biomarkers is probably the greatest limitation for developing treatments for these disorders. Thus, current and future research in this direction will be crucial.
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