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Kalaria DR, Singhal M, Patravale V, Merino V, Kalia YN. Simultaneous controlled iontophoretic delivery of pramipexole and rasagiline in vitro and in vivo: Transdermal polypharmacy to treat Parkinson's disease. Eur J Pharm Biopharm 2018; 127:204-212. [PMID: 29477356 DOI: 10.1016/j.ejpb.2018.02.031] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 02/16/2018] [Accepted: 02/21/2018] [Indexed: 11/29/2022]
Abstract
Effective treatment of Parkinson's disease (PD) involves administration of therapeutic agents with complementary mechanisms of action in order to replenish, sustain or substitute endogenous dopamine. The objective of this study was to investigate anodal co-iontophoresis of pramipexole (PRAM; dopamine agonist) and rasagiline (RAS; MAO-B inhibitor) in vitro and in vivo. Passive permeation of PRAM and RAS (20 mM each) across porcine skin after 6 h was 15.7 ± 1.9 and 16.0 ± 2.9 µg/cm2, respectively. Co-iontophoresis at 0.15, 0.3 and 0.5 mA/cm2 resulted in statistically significant increases in delivery of PRAM and RAS; at 0.5 mA/cm2, cumulative permeation of PRAM and RAS was 613.5 ± 114.6 and 441.1 ± 169.2 µg/cm2, respectively - corresponding to 38- and 27-fold increases over passive diffusion. Electromigration was the dominant mechanism for both molecules (>80%) and there was no effect on convective solvent flow. Statistically equivalent delivery was observed with human skin. The co-iontophoretic system showed high delivery efficiency with 29% and 35% of the applied amounts of PRAM and RAS being delivered. Preliminary pharmacokinetics studies in rats confirmed that the input rate in vivo was such that therapeutic amounts of the two drugs could be co-administered to humans by transdermal iontophoresis using reasonably sized patches and moderate current densities.
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Affiliation(s)
- Dhaval R Kalaria
- School of Pharmaceutical Sciences, University of Geneva & University of Lausanne, CMU, 1 rue Michel Servet, 1211 Geneva, Switzerland
| | - Mayank Singhal
- School of Pharmaceutical Sciences, University of Geneva & University of Lausanne, CMU, 1 rue Michel Servet, 1211 Geneva, Switzerland
| | - Vandana Patravale
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Mumbai 400019, India
| | - Virginia Merino
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM) Universitat Politecnica de València, Universitat de València, Spain; Departamento de Farmacia y Tecnología Farmacéutica y Parasitología, Faculty of Pharmacy, University of Valencia, Avda.Vicente Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain
| | - Yogeshvar N Kalia
- School of Pharmaceutical Sciences, University of Geneva & University of Lausanne, CMU, 1 rue Michel Servet, 1211 Geneva, Switzerland.
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Nilashi M, Ibrahim O, Ahmadi H, Shahmoradi L, Farahmand M. A hybrid intelligent system for the prediction of Parkinson's Disease progression using machine learning techniques. Biocybern Biomed Eng 2018. [DOI: 10.1016/j.bbe.2017.09.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Samat NA, Abdul Murad NA, Mohamad K, Abdul Razak MR, Mohamed Ibrahim N. Apolipoprotein Eε4: A Biomarker for Executive Dysfunction among Parkinson's Disease Patients with Mild Cognitive Impairment. Front Neurosci 2017; 11:712. [PMID: 29326545 PMCID: PMC5742342 DOI: 10.3389/fnins.2017.00712] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 12/05/2017] [Indexed: 01/21/2023] Open
Abstract
Background: Cognitive impairment is prevalent in Parkinson's disease (PD), affecting 15-20% of patients at diagnosis. α-synuclein expression and genetic polymorphisms of Apolipoprotein E (ApoE) have been associated with the presence of cognitive impairment in PD although data have been inconsistent. Objectives: To determine the prevalence of cognitive impairment in patients with PD using Montreal Cognitive Assessment (MoCA), Comprehensive Trail Making Test (CTMT) and Parkinson's disease-cognitive rating scale (PDCRS), and its association with plasma α-synuclein and ApoE genetic polymorphisms. Methods: This was across-sectional study involving 46 PD patients. Patients were evaluated using Montreal cognitive assessment test (MoCA), and detailed neuropsychological tests. The Parkinson's disease cognitive rating scale (PDCRS) was used for cognitive function and comprehensive trail making test (CTMT) for executive function. Blood was drawn for plasma α-synuclein measurements and ApoE genetic analysis. ApoE polymorphism was detected using MutaGELAPoE from ImmunDiagnostik. Plasma α-synuclein was detected using the ELISA Technique (USCN Life Science Inc.) according to the standard protocol. Results: Based on MoCA, 26 (56.5%) patients had mild cognitive impairment (PD-MCI) and 20 (43.5%) had normal cognition (PD-NC). Based on the PDCRS, 18 (39.1%) had normal cognition (PDCRS-NC), 17 (37%) had mild cognitive impairment (PDCRS-MCI), and 11 (23.9%) had dementia (PDCRS-PDD). In the PDCRS-MCI group, 5 (25%) patients were from PD-NC group and all PDCRS-PDD patients were from PD-MCI group. CTMT scores were significantly different between patients with MCI and normal cognition on MoCA (p = 0.003). Twenty one patients (72.4%) with executive dysfunction were from the PD-MCI group; 17 (77.3%) with severe executive dysfunction and 4 (57.1%) had mild to moderate executive dysfunction. There were no differences in the plasma α-synuclein concentration between the presence or types of cognitive impairment based on MoCA, PDCRS, and CTMT. TheApoEe4 allele carrier frequency was significantly higher in patients with executive dysfunction (p = 0.014). Conclusion: MCI was prevalent in our PD population. PDCRS appeared to be more discriminatory in detecting MCI and PDD than MoCA. Plasma α-synuclein level was not associated with presence nor type of cognitive impairment, but the ApoEe4 allele carrier status was significantly associated with executive dysfunction in PD.
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Affiliation(s)
- Nor A Samat
- Department of Medicine, UKM Medical Centre, Chancellor Tuanku Muhriz Hospital & Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
| | - Nor A Abdul Murad
- Universiti Kebangsaan Malaysia Medical Molecular Biology Institute, Kuala Lumpur, Malaysia
| | - Khairiyah Mohamad
- Department of Medicine, UKM Medical Centre, Chancellor Tuanku Muhriz Hospital & Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
| | - Mohd R Abdul Razak
- Universiti Kebangsaan Malaysia Medical Molecular Biology Institute, Kuala Lumpur, Malaysia
| | - Norlinah Mohamed Ibrahim
- Department of Medicine, UKM Medical Centre, Chancellor Tuanku Muhriz Hospital & Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
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Valldeoriola F, Salvador A, Gómez-Arguelles JM, Marey J, Moya M, Ayuga Á, Ramírez F. The effects of transdermal rotigotine on non-motor symptoms of Parkinson's disease: a multicentre, observational, retrospective, post-marketing study. Int J Neurosci 2017; 128:369-375. [PMID: 29249180 DOI: 10.1080/00207454.2017.1387111] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AIM This study evaluated the effect of ≥6 months of transdermal rotigotine on non-motor and motor symptoms of patients with advanced Parkinson's disease. MATERIALS AND METHODS The study was conducted in Spain between September 2011 and December 2012 (ClinicalTrials.gov: NCT01504529). The primary efficacy variable was the change from baseline in non-motor symptoms, as assessed by changes in Parkinson's Disease Non-Motor Symptoms Questionnaire total scores at 6 months. Secondary endpoints included the assessment of motor symptoms by Unified Parkinson's Disease Rating Scale III scores. RESULTS Data from 378 patients (mean age: 70.2 years; 56.9% male) with Parkinson's disease receiving rotigotine from were collected. Mean disease duration was 6.1 years, and mean rotigotine treatment duration was 45.6 months. Rotigotine reduced non-motor symptoms by 14.6% (mean change from baseline in Parkinson's Disease Non-Motor Symptoms Questionnaire: -1.5 ± 3.4; p < 0.0001). The majority of patients (58.2%) had improved non-motor symptoms at 6 months. Comparing the baseline versus study end, fewer patients experienced events in the urinary (78.6% vs. 73.3%; p = 0.0066), sleep (82.8% vs. 72.8%; p < 0.0001) and mood/cognition (77.3% vs. 66.4%; p < 0.0001) domains of the Parkinson's Disease Non-Motor Symptoms Questionnaire. Mean motor symptoms were reduced from baseline by 8.0% (mean change from baseline in Unified Parkinson's Disease Rating Scale III: -2.6 ± 8.0; p < 0.0001). CONCLUSIONS In clinical practice in Spain, rotigotine may be an effective treatment to reduce the non-motor and motor symptoms in patients with advanced Parkinson's disease.
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Affiliation(s)
| | - Antonio Salvador
- b Neurology Department , Hospital Clínico Universitario de Valencia , Valencia , Spain
| | | | - José Marey
- d Neurology Department , Hospital Universitario A Coruña , A Coruña , Spain
| | - Miguel Moya
- e Neurology Unit , Hospital Puerta Del Mar , Cádiz , Spain
| | - Ángel Ayuga
- f Medical Department , UCB Pharma S.A. , Madrid , Spain
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Zhang J, Tong W, Sun H, Jiang M, Shen Y, Liu Y, Gu H, Guo J, Fang J, Jin L. Nrf2-mediated neuroprotection by MANF against 6-OHDA-induced cell damage via PI3K/AKT/GSK3β pathway. Exp Gerontol 2017; 100:77-86. [DOI: 10.1016/j.exger.2017.10.021] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 10/14/2017] [Accepted: 10/23/2017] [Indexed: 01/13/2023]
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Viveros-Paredes JM, González-Castañeda RE, Gertsch J, Chaparro-Huerta V, López-Roa RI, Vázquez-Valls E, Beas-Zarate C, Camins-Espuny A, Flores-Soto ME. Neuroprotective Effects of β-Caryophyllene against Dopaminergic Neuron Injury in a Murine Model of Parkinson's Disease Induced by MPTP. Pharmaceuticals (Basel) 2017; 10:ph10030060. [PMID: 28684694 PMCID: PMC5620604 DOI: 10.3390/ph10030060] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 06/30/2017] [Accepted: 07/03/2017] [Indexed: 12/12/2022] Open
Abstract
Parkinson’s disease (PD) is one of the most common neurodegenerative disorders and is characterized by the loss of dopaminergic neurons in the substantia nigra (SN). Although the causes of PD are not understood, evidence suggests that its pathogenesis is associated with oxidative stress and inflammation. Recent studies have suggested a protective role of the cannabinoid signalling system in PD. β-caryophyllene (BCP) is a natural bicyclic sesquiterpene that is an agonist of the cannabinoid type 2 receptor (CB2R). Previous studies have suggested that BCP exerts prophylactic and/or curative effects against inflammatory bowel disease through its antioxidative and/or anti-inflammatory action. The present study describes the neuroprotective effects of BCP in a 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced murine model of PD, and we report the results of our investigation of its neuroprotective mechanism in neurons and glial cells. In the murine model, BCP pretreatment ameliorated motor dysfunction, protected against dopaminergic neuronal losses in the SN and striatum, and alleviated MPTP-induced glia activation. Additionally, BCP inhibited the levels of inflammatory cytokines in the nigrostriatal system. The observed neuroprotection and inhibited glia activation were reversed upon treatment with the CB2R selective antagonist AM630, confirming the involvement of the CB2R. These results indicate that BCP acts via multiple neuroprotective mechanisms in our murine model and suggest that BCP may be viewed as a potential treatment and/or preventative agent for PD.
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Affiliation(s)
- Juan M Viveros-Paredes
- Departamento de Farmacobiología CUCEI, Universidad de Guadalajara, 44430 Guadalajara, Mexico.
| | - Rocio E González-Castañeda
- Laboratorio de Microscopía de Alta Resolución, Departamento de Neurociencias, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, 44340 Guadalajara, Mexico.
| | - Juerg Gertsch
- Institute of Biochemistry and Molecular Medicine, NCCR Trans Cure, University of Bern, CH-3012 Bern, Switzerland.
| | - Veronica Chaparro-Huerta
- Laboratorio de Neurobiología Celular y Molecular, Centro de Investigación Biomédica de Occidente (CIBO), Instituto Mexicano del Seguro Social, 44421 Guadalajara, Mexico.
| | - Rocio I López-Roa
- Departamento de Farmacobiología CUCEI, Universidad de Guadalajara, 44430 Guadalajara, Mexico.
| | - Eduardo Vázquez-Valls
- Laboratorio de Inmunodeficiencias y Retrovirus Humanos, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, 44421 Guadalajara, Mexico.
| | - Carlos Beas-Zarate
- Laboratorio de Regeneración y Desarrollo Neural, Instituto de Neurobiología, Departamento de Biología Celular y Molecular, CUCBA, Universidad de Guadalajara, 44340 Guadalajara, Mexico.
| | - Antoni Camins-Espuny
- Unitat de Farmacologia i Farmacognòsia, Facultat de Farmàcia i Ciencias de l'Alimentació, Universitat de Barcelona, 08028 Barcelona, Spain.
- Biomedical Research Networking Center in Neurodegenerative Diseases (CIBERNED), 28031 Madrid, Spain.
| | - Mario E Flores-Soto
- Departamento de Farmacobiología CUCEI, Universidad de Guadalajara, 44430 Guadalajara, Mexico.
- Laboratorio de Microscopía de Alta Resolución, Departamento de Neurociencias, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, 44340 Guadalajara, Mexico.
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Kleiner A, Galli M, Franceschini M, De Pandis MF, Stocchi F, Albertini G, de Barros RML. The coefficient of friction in Parkinson's disease gait. FUNCTIONAL NEUROLOGY 2017; 32:17-22. [PMID: 28380319 PMCID: PMC5505525 DOI: 10.11138/fneur/2017.32.1.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This study aimed to characterize the coefficient of friction (COF) curves of patients with Parkinson's disease (PD) during barefoot gait and to evaluate the relationships between this variable and functional scales. Twenty-two subjects with PD (ON phase of levodopa) and 22 healthy subjects participated in this study. The participants walked barefoot along a pathway that went over two force plates embedded in the floor of the data collection room. The instantaneous COF was calculated as the ratio between the horizontal and vertical components of the ground reaction forces. Two-sample t-tests applied to every 1% of the support phase of the COF curve were used to compare the groups and to identify the phases in which the two groups were different. Specifically, three COF areas were computed: Area 1 (for the loading response phase), Area 2 (for the midstance phase) and Area 3 (for the terminal stance phase). Pearson's tests were applied to assess the associations between the COF curve areas and the clinical scales. The subjects with PD exhibited lower COF values during the loading response and terminal stance phases and higher COF values during the mid-stance phase compared with the control group. A strong positive correlation was observed between Area 1 and the Timed Up and Go Test (90.3%). In conclusion, the patients' COFs exhibited patterns that were different from those of the control group. Moreover, during the loading response phase, these differences were well-correlated with the Timed Up and Go Test scale data; Timed Up and Go Test data can be used to identify the risk of falls among PD patients.
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Affiliation(s)
- Ana Kleiner
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milano, Italy
| | - Manuela Galli
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milano, Italy
- “Motion analysis Lab”, IRCCS San Raffaele Pisana, Rome, Italy
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Kim M, Lee S, Cho J, Kim G, Won C. Dopamine D3 receptor-modulated neuroprotective effects of lisuride. Neuropharmacology 2017; 117:14-20. [DOI: 10.1016/j.neuropharm.2017.01.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 01/19/2017] [Accepted: 01/24/2017] [Indexed: 11/30/2022]
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Comparison for Efficacy and Tolerability among Ten Drugs for Treatment of Parkinson's Disease: A Network Meta-Analysis. Sci Rep 2017; 8:45865. [PMID: 28374775 PMCID: PMC5379205 DOI: 10.1038/srep45865] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 03/03/2017] [Indexed: 12/14/2022] Open
Abstract
Parkinson’s disease (PD) is a long term disorder affects the central nervous system and we aim to determine the relative efficacy of the current available drugs used in PD. Firstly, we performed a systematic review in current literature and eligible studies were retrieved from online databases, relevant data were extracted. Efficacy of these medications was assessed by different Unified Parkinson’s Disease Rating Scales (UPDRS). Mean difference (MD) and odds ratio (OR) were produced by pairwise or network meta-analysis (NMA). Finally, we performed a cluster analysis for the included medications with respect to their surface under the cumulative ranking curve (SUCRA). Pairwise meta-analysis suggests that selegiline had a higher ranking in UPDRS II, UPDRS III and UPDRS total than bromocriptine and levodopa. Selegiline was more tolerable than bromocriptine (OR = 0.62, CI: 0.39 to 0.98) and pramipexole was less tolerable than levodopa (OR = 1.43, CI = 1.00 to 2.04). Results of NMA indicate that patients with levodopa, pramipexole, ropinirole and selegiline exhibited a significantly improved UPDRS III than those with lazabemide. To sum up, levodopa, selegiline, ropinirole and rotigotine were recommended for PD patients as they appeared relatively high efficacy and tolerability.
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Kang SY, Lee SB, Kim HJ, Kim HT, Yang HO, Jang W. Autophagic modulation by rosuvastatin prevents rotenone-induced neurotoxicity in an in vitro model of Parkinson’s disease. Neurosci Lett 2017; 642:20-26. [DOI: 10.1016/j.neulet.2017.01.063] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 01/23/2017] [Accepted: 01/26/2017] [Indexed: 12/19/2022]
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Abstract
Acromegaly, a rare disease due to growth hormone (GH) hypersecretion by a pituitary adenoma, is associated with severe comorbidity and premature death if not adequately treated. The usual first-line treatment is surgery. Various drugs, including somatostatin receptor ligands, dopamine agonists and GH receptor antagonists, are now available for use if surgery fails to suppress GH/IGF-I hypersecretion. Cabergoline, now the preferred dopamine agonist for treating hyperprolactinemia, is also used off-label for treating acromegaly. Cabergoline monotherapy is reported to normalize IGF-I levels in more than one-third of patients with acromegaly. When a somatostatin receptor ligand proves ineffective, cabergoline add-on therapy normalizes the IGF-I level in 40-50% of patients. Finally, when combined with the GH receptor antagonist pegvisomant in patients with mild uncontrolled disease, cabergoline helps to achieve normal IGF-I levels while avoiding the need for high-dose pegvisomant. Cabergoline is also inexpensive and well tolerated; in particular, it does not appear to promote heart valve disease.
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Affiliation(s)
- Emmanuelle Kuhn
- Assistance Publique-Hôpitaux de Paris, Hôpital Bicêtre Service d'Endocrinologie et des Maladies de la Reproduction, 78 rue du Général Leclerc, 94275, Le Kremlin-Bicêtre, France
- Faculté de Médecine Paris-Sud, Université Paris-Sud, Orsay, France
- Unité Mixte de Recherche-S1185, 94276, Le Kremlin Bicêtre, France
- Institut National de la Santé et de la Recherche Médicale (INSERM) U1185, 94276, Le Kremlin Bicêtre, France
| | - Philippe Chanson
- Assistance Publique-Hôpitaux de Paris, Hôpital Bicêtre Service d'Endocrinologie et des Maladies de la Reproduction, 78 rue du Général Leclerc, 94275, Le Kremlin-Bicêtre, France.
- Faculté de Médecine Paris-Sud, Université Paris-Sud, Orsay, France.
- Unité Mixte de Recherche-S1185, 94276, Le Kremlin Bicêtre, France.
- Institut National de la Santé et de la Recherche Médicale (INSERM) U1185, 94276, Le Kremlin Bicêtre, France.
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Lebcir R, Demir E, Ahmad R, Vasilakis C, Southern D. A discrete event simulation model to evaluate the use of community services in the treatment of patients with Parkinson's disease in the United Kingdom. BMC Health Serv Res 2017; 17:50. [PMID: 28100215 PMCID: PMC5241966 DOI: 10.1186/s12913-017-1994-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 01/09/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The number of people affected by Parkinson's disease (PD) is increasing in the United Kingdom driven by population ageing. The treatment of the disease is complex, resource intensive and currently there is no known cure to PD. The National Health Service (NHS), the public organisation delivering healthcare in the UK, is under financial pressures. There is a need to find innovative ways to improve the operational and financial performance of treating PD patients. The use of community services is a new and promising way of providing treatment and care to PD patients at reduced cost than hospital care. The aim of this study is to evaluate the potential operational and financial benefits, which could be achieved through increased integration of community services in the delivery of treatment and care to PD patients in the UK without compromising care quality. METHODS A Discrete Event Simulation model was developed to represent the PD care structure including patients' pathways, treatment modes, and the mix of resources required to treat PD patients. The model was parametrised with data from a large NHS Trust in the UK and validated using information from the same trust. Four possible scenarios involving increased use of community services were simulated on the model. RESULTS Shifting more patients with PD from hospital treatment to community services will reduce the number of visits of PD patients to hospitals by about 25% and the number of PD doctors and nurses required to treat these patients by around 32%. Hospital based treatment costs overall should decrease by 26% leading to overall savings of 10% in the total cost of treating PD patients. CONCLUSIONS The simulation model was useful in predicting the effects of increased use of community services on the performance of PD care delivery. Treatment policies need to reflect upon and formalise the use of community services and integrate these better in PD care. The advantages of community services need to be effectively shared with PD patients and carers to help inform management choices and care plans.
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Affiliation(s)
- Reda Lebcir
- University of Hertfordshire, AL10 9AB, Hatfield, UK.,Faculty of Medicine, Imperial College London, Hammersmith Campus, du Cane Road, London, W12 0NN, UK
| | - Eren Demir
- University of Hertfordshire, AL10 9AB, Hatfield, UK
| | - Raheelah Ahmad
- Faculty of Medicine, Imperial College London, Hammersmith Campus, du Cane Road, London, W12 0NN, UK. .,Health Group, Management Department, Imperial College Business School, Exhibition Road, London, SW7 2AZ, UK.
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Mesencephalic astrocyte-derived neurotrophic factor alleviated 6-OHDA-induced cell damage via ROS-AMPK/mTOR mediated autophagic inhibition. Exp Gerontol 2017; 89:45-56. [PMID: 28099881 DOI: 10.1016/j.exger.2017.01.010] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 01/08/2017] [Accepted: 01/13/2017] [Indexed: 11/20/2022]
Abstract
Autophagy and apoptosis are commonly involved in the dopaminergic neuron damage in the pathogenesis of Parkinson's disease. Recently, the autophagy pathway is thought to be critical to the process of PD. Therefore, the regulation of autophagy may be a potential strategy for PD treatment. Mesencephalic astrocyte-derived neurotrophic factor (MANF) has been reported to have neuroprotective effects through anti-apoptosis, anti-oxidative, and anti-inflammatory mechanisms in PD. In this study, we investigated the role of autophagy system in MANF-mediated neuroprotection against 6-hydroxydopamine (6-OHDA)-induced neurotoxicity. Our results showed that MANF protected SH-SY5Y cells against 6-OHDA-induced cell viability decrease and apoptosis by inhibiting autophagy. Mitochondrion damage and energetic dysfunction triggered by reactive oxidative stress (ROS) accumulation were also alleviated by MANF treatment. Furthermore, MANF downregulated phosphorylation of AMP-activated protein kinase (AMPK), a cellular energy sensor and regulator, but upregulated phosphorylation of Mammalian target of rapamycin (mTOR) under energy depletion conditions, indicating AMPK/mTOR signaling pathway is involved in the autophagic inhibition of MANF. These results suggest that autophagic inhibition provides protective mechanism of MANF in 6-OHDA-induced SH-SY5Y cell death and this inhibition is associated with AMPK/mTOR pathway.
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Blits B, Petry H. Perspective on the Road toward Gene Therapy for Parkinson's Disease. Front Neuroanat 2017; 10:128. [PMID: 28119578 PMCID: PMC5220060 DOI: 10.3389/fnana.2016.00128] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 12/20/2016] [Indexed: 11/19/2022] Open
Abstract
Many therapeutic strategies aimed at relieving symptoms of Parkinson’s disease (PD) are currently used for treatment of this disease. With a hallmark of progressive degeneration of dopaminergic neurons, the absence of properly operational dopaminergic circuitry becomes a therapeutic target. Following diagnosis, dopamine replacement can be given in the form of L-DOPA (L-3,4-dihydroxyphenylalanine). Even though it is recognized as standard of care, this treatment strategy does not prevent the affected neurons from degenerating. Therefore, studies have been performed using gene therapy (GT) to make dopamine (DA) available from within the brain using an artificial DA circuitry. One approach is to administer a GT aimed at delivering the key enzymes for DA synthesis using a lentiviral vector system (Palfi et al., 2014). A similar approach has been investigated with adeno-associated virus (AAV) expressing aromatic L-amino acid decarboxylase, tyrosine hydroxylase, and GTP-cyclohydrolase I (Bankiewicz et al., 2000), which are downregulated in PD. Another GT approach to mitigate symptoms of PD used AAV-mediated delivery of GAD-67 (glutamate decarboxylase) (Kaplitt et al., 2007). This approach mimics the inhibitory effect of DA neurons on their targets, in reducing motor abnormalities. Finally, disease modifying strategies have been undertaken using neurotrophic factors such as neurturin (NTN) (Marks et al., 2008; Bartus et al., 2013a) or are ongoing with the closely related Glial cell line-derived neurotrophic factor. Those approaches are aiming at rescuing the degenerating neurons. All of the above mentioned strategies have their own merits, but also some disadvantages. So far, none of clinical applied GT studies has resulted in significant clinical benefit, although some clinical studies are ongoing and results are expected over the next few years.
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Affiliation(s)
- Bas Blits
- Neurobiology Research, uniQure BV Amsterdam, Netherlands
| | - Harald Petry
- Neurobiology Research, uniQure BV Amsterdam, Netherlands
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Vroonen L, Lancellotti P, Garcia MT, Dulgheru R, Rubio-Almanza M, Maiga I, Magne J, Petrossians P, Auriemma R, Daly AF, Beckers A. Prospective, long-term study of the effect of cabergoline on valvular status in patients with prolactinoma and idiopathic hyperprolactinemia. Endocrine 2017; 55:239-245. [PMID: 27709470 DOI: 10.1007/s12020-016-1120-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Accepted: 09/07/2016] [Indexed: 10/20/2022]
Abstract
Since the 1990's cabergoline has been the treatment of choice in prolactinoma, as it permits rapid and effective hormonal and tumor control in most cases. Evidence of cardiac valvulopathy was demonstrated in Parkinson's disease patients treated with dopamine agonists. Retrospective studies in prolactinoma patients treated with cabergoline at lower doses did not show such an effect. However, few prospective data with long-term follow-up are available. The aim of this study was to assess the safety of cabergoline regarding cardiac valvular status during prospective follow-up in patients treated for prolactinoma or idiopathic hyperprolactinemia. We report here a series of 100 patients (71F; median age at diagnosis: 41.5 years) treated with cabergoline for endocrine diseases (prolactinoma n = 89, idiopathic hyperprolactinemia n = 11). All patients underwent complete transthoracic echocardiographic studies at baseline and during long-term prospective surveillance using the same equipment and performed by the same technicians. The median interval between baseline and last follow-up echocardiographic studies while on cabergoline was 62.5 months (interquartile range: 34.75-77.0). The median total duration of cabergoline treatment was 124.5 months (interquartile range: 80.75-188.75) and the median cumulative total dose of cabergoline was 277.8 mg (interquartile range : 121.4-437.8 mg) at last follow-up. We found no clinically relevant alterations in cardiac valve function or valvular calcifications with cabergoline treatment. Our data suggest that findings from retrospective analyses are correct and that cabergoline is a safe chronic treatment at the doses used typically in endocrinology.
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Affiliation(s)
- Laurent Vroonen
- Department of Endocrinology, Center Hospitalier Universitaire de Liège, University of Liège, Domaine Universitaire du Sart-Tilman, Liège, 4000, Belgium
| | - Patrizio Lancellotti
- Department of Cardiology, Center Hospitalier Universitaire de Liège, University of Liège, Domaine Universitaire du Sart-Tilman, Liège, 4000, Belgium
| | - Monica Tomé Garcia
- Department of Endocrinology, Center Hospitalier Universitaire de Liège, University of Liège, Domaine Universitaire du Sart-Tilman, Liège, 4000, Belgium
| | - Raluca Dulgheru
- Department of Cardiology, Center Hospitalier Universitaire de Liège, University of Liège, Domaine Universitaire du Sart-Tilman, Liège, 4000, Belgium
| | - Matilde Rubio-Almanza
- Department of Endocrinology, Center Hospitalier Universitaire de Liège, University of Liège, Domaine Universitaire du Sart-Tilman, Liège, 4000, Belgium
| | - Ibrahima Maiga
- Department of Endocrinology, Center Hospitalier Universitaire de Liège, University of Liège, Domaine Universitaire du Sart-Tilman, Liège, 4000, Belgium
| | - Julien Magne
- Department of Cardiology, Center Hospitalier Universitaire de Liège, University of Liège, Domaine Universitaire du Sart-Tilman, Liège, 4000, Belgium
| | - Patrick Petrossians
- Department of Endocrinology, Center Hospitalier Universitaire de Liège, University of Liège, Domaine Universitaire du Sart-Tilman, Liège, 4000, Belgium
| | - Renata Auriemma
- Department of Endocrinology, Center Hospitalier Universitaire de Liège, University of Liège, Domaine Universitaire du Sart-Tilman, Liège, 4000, Belgium
| | - Adrian F Daly
- Department of Endocrinology, Center Hospitalier Universitaire de Liège, University of Liège, Domaine Universitaire du Sart-Tilman, Liège, 4000, Belgium
| | - Albert Beckers
- Department of Endocrinology, Center Hospitalier Universitaire de Liège, University of Liège, Domaine Universitaire du Sart-Tilman, Liège, 4000, Belgium.
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Pointer CB, Klegeris A. Cardiolipin in Central Nervous System Physiology and Pathology. Cell Mol Neurobiol 2016; 37:1161-1172. [PMID: 28039536 DOI: 10.1007/s10571-016-0458-9] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 12/19/2016] [Indexed: 02/08/2023]
Abstract
Cardiolipin, an anionic phospholipid found primarily in the inner mitochondrial membrane, has many well-defined roles within the peripheral tissues, including the maintenance of mitochondrial membrane fluidity and the regulation of mitochondrial functions. Within the central nervous system (CNS), cardiolipin is found within both neuronal and non-neuronal glial cells, where it regulates metabolic processes, supports mitochondrial functions, and promotes brain cell viability. Furthermore, cardiolipin has been shown to act as an elimination signal and participate in programmed cell death by apoptosis of both neurons and glia. Since cardiolipin is associated with regulating brain homeostasis, the modification of its structure, or even a decrease in the overall levels of cardiolipin, can result in mitochondrial dysfunction, which is a characteristic feature of many diseases. In this review, we outline the various functions of cardiolipin within the cells of the CNS, including neurons, astrocytes, microglia, and oligodendrocytes. In addition, we discuss the role cardiolipin may play in the pathogenesis of the neurodegenerative disorders Alzheimer's disease and Parkinson's disease, as well as traumatic brain injury.
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Affiliation(s)
- Caitlin B Pointer
- Department of Biology, University of British Columbia, Okanagan Campus, Kelowna, BC, V1V 1V7, Canada
| | - Andis Klegeris
- Department of Biology, University of British Columbia, Okanagan Campus, Kelowna, BC, V1V 1V7, Canada.
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Tetramethylpyrazine Analogue CXC195 Protects Against Dopaminergic Neuronal Apoptosis via Activation of PI3K/Akt/GSK3β Signaling Pathway in 6-OHDA-Induced Parkinson's Disease Mice. Neurochem Res 2016; 42:1141-1150. [PMID: 28005221 DOI: 10.1007/s11064-016-2148-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 12/08/2016] [Accepted: 12/10/2016] [Indexed: 01/06/2023]
Abstract
Parkinson's disease (PD) is a progressive neurodegenerative disorder and characterized by motor system disorders resulting in loss of dopaminergic (DA) neurons. CXC195, a novel tetramethylpyrazine derivative, has been shown strongest neuroprotective effects due to its anti-apoptotic activity. However, whether CXC195 protects against DA neuronal damage in PD and the mechanisms underlying its beneficial effects are unknown. The purpose of our study was to investigate the potential neuroprotective role of CXC195 and to elucidate its mechanism of action against 6-hydroxydopamine (6-OHDA)-induced mouse model of PD. CXC195 administration improved DA neurodegeneration in PD mice induced by 6-OHDA. Our further findings confirmed treatment of CXC195 at the dose of 10 mg/kg significantly inhibited the apoptosis by decreasing the level of cleaved caspase-3 and Bax, and increasing the level of Bcl-2 in 6-OHDA-lesioned mice. Meanwhile, 6-OHDA also decreased the amount of phosphorylated Akt while increased GSK-3β activity (the amount of phosphorylated GSK-3β at Ser9 was decreased) which was prevented by CXC195. Wortmannin, a specific PI3K inhibitor, dramatically abolished the changes induced by CXC195. Our study firstly demonstrated that CXC195 protected against DA neurodegeneration in 6-OHDA-induced PD model by its anti-apoptotic properties and PI3K/Akt/GSK3β signaling pathway was involved in it.
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Carta AR, Mulas G, Bortolanza M, Duarte T, Pillai E, Fisone G, Vozari RR, Del-Bel E. l-DOPA-induced dyskinesia and neuroinflammation: do microglia and astrocytes play a role? Eur J Neurosci 2016; 45:73-91. [DOI: 10.1111/ejn.13482] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 11/07/2016] [Accepted: 11/11/2016] [Indexed: 12/14/2022]
Affiliation(s)
- Anna R. Carta
- Department of Biomedical Sciences; University of Cagliari, Cittadella Universitaria di Monserrato; S.P. N. 8 09042 Monserrato Cagliari Italy
| | - Giovanna Mulas
- Department of Biomedical Sciences; University of Cagliari, Cittadella Universitaria di Monserrato; S.P. N. 8 09042 Monserrato Cagliari Italy
| | - Mariza Bortolanza
- School of Odontology of Ribeirão Preto; Department of Morphology, Physiology and Basic Pathology; University of São Paulo (USP); Av. Café S/N 14040-904 Ribeirão Preto SP Brazil
- USP, Center for Interdisciplinary Research on Applied Neurosciences (NAPNA); São Paulo Brazil
| | - Terence Duarte
- School of Odontology of Ribeirão Preto; Department of Morphology, Physiology and Basic Pathology; University of São Paulo (USP); Av. Café S/N 14040-904 Ribeirão Preto SP Brazil
- USP, Center for Interdisciplinary Research on Applied Neurosciences (NAPNA); São Paulo Brazil
| | - Elisabetta Pillai
- Department of Biomedical Sciences; University of Cagliari, Cittadella Universitaria di Monserrato; S.P. N. 8 09042 Monserrato Cagliari Italy
| | - Gilberto Fisone
- Department of Neuroscience; Karolinska Institutet; Retzius väg 8 17177 Stockholm Sweden
| | - Rita Raisman Vozari
- INSERM U 1127; CNRS UMR 7225; UPMC Univ Paris 06; UMR S 1127; Institut Du Cerveau et de La Moelle Epiniére; ICM; Paris France
| | - Elaine Del-Bel
- School of Odontology of Ribeirão Preto; Department of Morphology, Physiology and Basic Pathology; University of São Paulo (USP); Av. Café S/N 14040-904 Ribeirão Preto SP Brazil
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Hudry J, Rinne JO, Keränen T, Eckert L, Cochran JM. Cost-Utility Model of Rasagiline in the Treatment of Advanced Parkinson's Disease in Finland. Ann Pharmacother 2016; 40:651-7. [PMID: 16569799 DOI: 10.1345/aph.1g454] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Background: The economic burden of Parkinson's disease (PD) is high, especially in patients experiencing motor fluctuations. Rasagiline has demonstrated efficacy against symptoms of PD in early and advanced stages of the disease. Objective: To assess the cost-utility of rasagiline and entacapone as adjunctive therapies to levodopa versus standard levodopa care in PD patients with motor fluctuations in Finland. Methods: A 2 year probabilistic Markov model with 3 health states: “25% or less off-time/day,” “greater than 25% off-time/day,” and “dead” was used. Off-time represents time awake with poor or absent motor function. Model inputs included transition probabilities from randomized clinical trials, utilities from a preference measurement study, and costs and resources from a Finnish cost-of-illness study. Effectiveness measures were quality-adjusted life years (QALYs) and number of months spent with 25% or less off-time/day. Uncertainty around parameters was taken into account by Monte Carlo simulations. Results: Over 2 years from a societal perspective, rasagiline or entacapone as adjunctive therapies to levodopa showed greater effectiveness than levodopa alone at no additional costs. Benefits after 2 years were 0.13 (95% CI 0.08 to 0.17) additional QALYs and 5.2 (3.6 to 6.7) additional months for rasagiline and 0.12 (0.08 to 0.17) QALYs and 5.1 (3.5 to 6.6) months for entacapone, both in adjunct to levodopa compared with levodopa alone. Conclusions: The results of this study support the use of rasagiline and entacapone as adjunctive cost-effective alternatives to levodopa alone in PD patients with motor fluctuations in Finland. With a different mode of action, rasagiline is a valuable therapeutic alternative to entacapone at no additional charge to society.
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Affiliation(s)
- Joumana Hudry
- International Department of Health Economics and Epidemiology, H Lundbeck A/S, Paris, France.
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Tan AH, Tan CT, Marras C, Loh KW, Wye Ho NW, Lim QH, Tan PW, Lim CC, Cheong YW, Kong ST, Schee JP, Tan KH, Soo SK, Vanderschaaf C, Lai Heong Lew S, Mahamad UA, Goh KJ, Yong HS, Lim SY. Knowledge of Parkinson's Disease in a Multiethnic Urban Asian Setting. JOURNAL OF PARKINSONS DISEASE 2016; 5:865-79. [PMID: 26444089 DOI: 10.3233/jpd-150594] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Public knowledge regarding Parkinson's disease (PD) is important to facilitate good health-seeking behavior, but the literature on this topic is scarce. OBJECTIVE We aimed to explore the level of public knowledge regarding PD in a large multiethnic urban Asian cohort, and (as a secondary aim) in a smaller cohort of PD patients and caregivers. METHODS A Knowledge of PD Questionnaire (KPDQ) was developed and administered to members of the Malaysian general public, and to PD patients and caregivers. The KPDQ tests recognition of PD symptoms and general knowledge regarding PD. RESULTS 1,258 members of the general public completed the KPDQ. Tremor was the most widely recognized symptom (recognized by 79.0% of respondents); however, 83.7% incorrectly believed that all PD patients experience tremor. Memory problem was the most widely recognized NMS. Overall, motor symptoms were better recognized than NMS. Common misperceptions were that there is a cure for PD (49.8%) and that PD is usually familial (41.4%). Female gender, Chinese ethnicity, tertiary education, healthcare-related work, and knowing someone with PD were independently associated with higher KPDQ scores. PD patients (n = 116) and caregivers (n = 135) demonstrated superior knowledge compared with the general public group, but one-third of them believed that PD is currently curable. CONCLUSIONS This is the only study on public knowledge regarding PD in Asia. Important gaps in knowledge were evident, which could present a barrier to early diagnosis and appropriate treatment of PD. This highlights the need for targeted education campaigns and further research in this area.
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Affiliation(s)
- Ai Huey Tan
- Division of Neurology and the Mah Pooi Soo & Tan Chin Nam Centre for Parkinson’s & Related Disorders, University of Malaya, Kuala Lumpur, Malaysia
| | - Chong Tin Tan
- Division of Neurology and the Mah Pooi Soo & Tan Chin Nam Centre for Parkinson’s & Related Disorders, University of Malaya, Kuala Lumpur, Malaysia
| | - Connie Marras
- Morton and Gloria Shulman Movement Disorders Centre, Toronto Western Hospital and the Edmond J. Safra Program in Parkinson’s Disease Research, University of Toronto, Toronto, ON, Canada
| | - Kwong Weng Loh
- Division of Neurology and the Mah Pooi Soo & Tan Chin Nam Centre for Parkinson’s & Related Disorders, University of Malaya, Kuala Lumpur, Malaysia
| | - Niki Wai Wye Ho
- Division of Neurology and the Mah Pooi Soo & Tan Chin Nam Centre for Parkinson’s & Related Disorders, University of Malaya, Kuala Lumpur, Malaysia
| | - Quan Hziung Lim
- Division of Neurology and the Mah Pooi Soo & Tan Chin Nam Centre for Parkinson’s & Related Disorders, University of Malaya, Kuala Lumpur, Malaysia
| | - Pei Wen Tan
- Division of Neurology and the Mah Pooi Soo & Tan Chin Nam Centre for Parkinson’s & Related Disorders, University of Malaya, Kuala Lumpur, Malaysia
| | - Chee Chean Lim
- Division of Neurology and the Mah Pooi Soo & Tan Chin Nam Centre for Parkinson’s & Related Disorders, University of Malaya, Kuala Lumpur, Malaysia
| | - Yee Weai Cheong
- Division of Neurology and the Mah Pooi Soo & Tan Chin Nam Centre for Parkinson’s & Related Disorders, University of Malaya, Kuala Lumpur, Malaysia
| | - Sik Thien Kong
- Division of Neurology and the Mah Pooi Soo & Tan Chin Nam Centre for Parkinson’s & Related Disorders, University of Malaya, Kuala Lumpur, Malaysia
| | - Jie Ping Schee
- Division of Neurology and the Mah Pooi Soo & Tan Chin Nam Centre for Parkinson’s & Related Disorders, University of Malaya, Kuala Lumpur, Malaysia
| | - Kean Hoong Tan
- Division of Neurology and the Mah Pooi Soo & Tan Chin Nam Centre for Parkinson’s & Related Disorders, University of Malaya, Kuala Lumpur, Malaysia
| | - Suet Ker Soo
- Division of Neurology and the Mah Pooi Soo & Tan Chin Nam Centre for Parkinson’s & Related Disorders, University of Malaya, Kuala Lumpur, Malaysia
| | | | | | - Ummi Affah Mahamad
- Department of Medicine, Faculty of Medicine, Universiti Sains Islam Malaysia, Kuala Lumpur, Malaysia
| | - Khean Jin Goh
- Division of Neurology and the Mah Pooi Soo & Tan Chin Nam Centre for Parkinson’s & Related Disorders, University of Malaya, Kuala Lumpur, Malaysia
| | - Hoi Sen Yong
- Institute of Biological Sciences, University of Malaya, Kuala Lumpur, Malaysia
| | - Shen-Yang Lim
- Division of Neurology and the Mah Pooi Soo & Tan Chin Nam Centre for Parkinson’s & Related Disorders, University of Malaya, Kuala Lumpur, Malaysia
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Del-Bel E, Bortolanza M, Dos-Santos-Pereira M, Bariotto K, Raisman-Vozari R. l-DOPA-induced dyskinesia in Parkinson's disease: Are neuroinflammation and astrocytes key elements? Synapse 2016; 70:479-500. [DOI: 10.1002/syn.21941] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 09/06/2016] [Accepted: 09/06/2016] [Indexed: 12/22/2022]
Affiliation(s)
- Elaine Del-Bel
- Department of MFPB-Physiology; FORP, Campus USP, University of São Paulo; Av. Café, s/no Ribeirão Preto SP 14040-904 Brazil
- Center for Interdisciplinary Research on Applied Neurosciences (NAPNA); São Paulo Brazil
- Department of Physiology; FMRP; São Paulo Brazil
- Department of Neurology and Behavioral Neuroscience; FMRP, Campus USP, University of São Paulo; Av. Bandeirantes 13400 Ribeirão Preto SP 14049-900 Brazil
| | - Mariza Bortolanza
- Department of MFPB-Physiology; FORP, Campus USP, University of São Paulo; Av. Café, s/no Ribeirão Preto SP 14040-904 Brazil
- Center for Interdisciplinary Research on Applied Neurosciences (NAPNA); São Paulo Brazil
| | - Maurício Dos-Santos-Pereira
- Department of MFPB-Physiology; FORP, Campus USP, University of São Paulo; Av. Café, s/no Ribeirão Preto SP 14040-904 Brazil
- Center for Interdisciplinary Research on Applied Neurosciences (NAPNA); São Paulo Brazil
- Department of Physiology; FMRP; São Paulo Brazil
| | - Keila Bariotto
- Department of MFPB-Physiology; FORP, Campus USP, University of São Paulo; Av. Café, s/no Ribeirão Preto SP 14040-904 Brazil
- Center for Interdisciplinary Research on Applied Neurosciences (NAPNA); São Paulo Brazil
- Department of Neurology and Behavioral Neuroscience; FMRP, Campus USP, University of São Paulo; Av. Bandeirantes 13400 Ribeirão Preto SP 14049-900 Brazil
| | - Rita Raisman-Vozari
- INSERM UMR 1127, CNRS UMR 7225, UPMC; Thérapeutique Expérimentale de la Neurodégénérescence, Hôpital de la Salpetrière-ICM (Institut du cerveau et de la moelle épinière); Paris France
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Back to the tubule: microtubule dynamics in Parkinson's disease. Cell Mol Life Sci 2016; 74:409-434. [PMID: 27600680 PMCID: PMC5241350 DOI: 10.1007/s00018-016-2351-6] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 08/18/2016] [Accepted: 08/29/2016] [Indexed: 12/12/2022]
Abstract
Cytoskeletal homeostasis is essential for the development, survival and maintenance of an efficient nervous system. Microtubules are highly dynamic polymers important for neuronal growth, morphology, migration and polarity. In cooperation with several classes of binding proteins, microtubules regulate long-distance intracellular cargo trafficking along axons and dendrites. The importance of a delicate interplay between cytoskeletal components is reflected in several human neurodegenerative disorders linked to abnormal microtubule dynamics, including Parkinson’s disease (PD). Mounting evidence now suggests PD pathogenesis might be underlined by early cytoskeletal dysfunction. Advances in genetics have identified PD-associated mutations and variants in genes encoding various proteins affecting microtubule function including the microtubule-associated protein tau. In this review, we highlight the role of microtubules, their major posttranslational modifications and microtubule associated proteins in neuronal function. We then present key evidence on the contribution of microtubule dysfunction to PD. Finally, we discuss how regulation of microtubule dynamics with microtubule-targeting agents and deacetylase inhibitors represents a promising strategy for innovative therapeutic development.
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Laurencin C, Danaila T, Broussolle E, Thobois S. Initial treatment of Parkinson's disease in 2016: The 2000 consensus conference revisited. Rev Neurol (Paris) 2016; 172:512-523. [PMID: 27476416 DOI: 10.1016/j.neurol.2016.07.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 07/08/2016] [Indexed: 10/21/2022]
Abstract
In 2000, a French consensus conference proposed guidelines for the treatment of Parkinson's disease (PD). Since then, new drugs have been concocted, new studies have been published and clinicians have become aware of some drug-induced adverse effects that were little known in the past. This has led us to reconsider the recommendations published 16 years ago. Thus, the aim of the present review is to present the recent data related to the different medications and non-pharmacological approaches available for PD, with a special focus on early-stage PD. Levodopa (LD), dopamine agonists (DAs), catechol-O-methyltransferase inhibitors (COMT-Is), anticholinergics, monoamine oxidase inhibitors (MAOB-Is) and amantadine have been considered, and their efficacy and safety for both motor as well as non-motor aspects are reported here. This has led to our proposal for a revised therapeutic strategy for the initiation of treatment in newly diagnosed PD patients, based on the available literature and the relative benefits/side effects balance.
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Affiliation(s)
- C Laurencin
- Service de neurologie C, hôpital neurologique Pierre-Wertheimer, hospices civils de Lyon, 59, boulevard Pinel, 69677 Lyon/Bron, France; Faculté de médecine et de maïeutique Lyon Sud Charles-Mérieux, université de Lyon, université Claude-Bernard Lyon I, Lyon, France.
| | - T Danaila
- Service de neurologie C, hôpital neurologique Pierre-Wertheimer, hospices civils de Lyon, 59, boulevard Pinel, 69677 Lyon/Bron, France
| | - E Broussolle
- Service de neurologie C, hôpital neurologique Pierre-Wertheimer, hospices civils de Lyon, 59, boulevard Pinel, 69677 Lyon/Bron, France; CNRS, UMR 5229, institut des sciences cognitives Marc-Jeannerod, 69500 Bron, France; Faculté de médecine et de maïeutique Lyon Sud Charles-Mérieux, université de Lyon, université Claude-Bernard Lyon I, Lyon, France
| | - S Thobois
- Service de neurologie C, hôpital neurologique Pierre-Wertheimer, hospices civils de Lyon, 59, boulevard Pinel, 69677 Lyon/Bron, France; CNRS, UMR 5229, institut des sciences cognitives Marc-Jeannerod, 69500 Bron, France; Faculté de médecine et de maïeutique Lyon Sud Charles-Mérieux, université de Lyon, université Claude-Bernard Lyon I, Lyon, France
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Long-term effects of automated mechanical peripheral stimulation on gait patterns of patients with Parkinson's disease. Int J Rehabil Res 2016; 38:238-45. [PMID: 26164797 PMCID: PMC4662266 DOI: 10.1097/mrr.0000000000000120] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
New treatments based on peripheral stimulation of the sensory–motor system have been inspiring new rehabilitation approaches in Parkinson’s disease (PD), especially to reduce gait impairment, levodopa washout effects, and the incidence of falls. The aim of this study was to evaluate the change in gait and the clinical status of PD patients after six sessions of a treatment based on automated mechanical peripheral stimulation (AMPS). Eighteen patients with PD and 15 age-matched healthy individuals (control group) participated in this study. A dedicated medical device delivered the AMPS. PD patients were treated with AMPS six times once every 4 days. All PD patients were treated in the off-levodopa phase and were evaluated with gait analysis before and after the first intervention (acute phase), after the sixth intervention, 48 h after the sixth intervention, and 10 days after the end of the treatment. To compare the differences among the AMPS interventions (pre, 6 AMPS, and 10 days) in terms of clinical scales, a t-test was used (α≤0.05). In addition, to compare the differences among the AMPS interventions (pre, post, 6 AMPS, 48 h and 10 days), the gait spatiotemporal parameters were analyzed using the Friedman test and the Bonferroni post-hoc test (α≤0.05). Also, for comparisons between the PD group and the control group, the gait spatiotemporal parameters were analyzed using the Mann–Whitney test and the Bonferroni post-hoc test (α≤0.05). The results of the study indicate that the AMPS treatment has a positive effect on bradykinesia because it improves walking velocity, has a positive effect on the step and stride length, and has a positive effect on walking stability, measured by the increase in stride length. These results are consistent with the improvements measured with clinical scales. These findings indicate that AMPS treatment seems to generate a more stable walking pattern in PD patients, reducing the well-known gait impairment that is typical of PD; regular repetition every 4 days of AMPS treatment appears to be able to improve gait parameters, to restore rhythmicity, and to reduce the risk of falls, with benefits maintained up to 10 days after the last treatment. The trial was registered online at ClinicalTrials.gov (number identifier: NCT0181528).
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Abstract
Urodynamic testing is the study of the function of the bladder and its outlet. Geriatric patients are at greater risk for lower urinary tract dysfunction owing to age or neurologic disease, such as Parkinson disease or stroke. Although urodynamic testing may best diagnose an individual patient's bladder storage and emptying function, the tests should be tailored to answer the question being asked and the test should only be done when the outcome of the test is going to impact decision making regarding management or treatment.
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Affiliation(s)
- Joseph E Yared
- Section of Urology, Department of Surgery, 1 Medical Center Drive, Lebanon, NH 03756, USA
| | - E Ann Gormley
- Section of Urology, Department of Surgery, 1 Medical Center Drive, Lebanon, NH 03756, USA.
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de Oliveira Vilaça C, Leite MAA, de Souza JA, Orsini M, Pereira JS, Amaral C. The Behavior of Migraine in Patients with Parkinson's Disease. Neurol Int 2015; 7:6133. [PMID: 26788267 PMCID: PMC4704473 DOI: 10.4081/ni.2015.6133] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 09/05/2015] [Accepted: 11/12/2015] [Indexed: 11/23/2022] Open
Abstract
Parkinson’s disease (PD) is characterized by the degeneration of dopaminergic systems in the central nervous system. In migraine it is supposed to occur hyperactivation of central dopaminergic pathways. We verified the hypothesis of improved migraine in patients who manifest PD. We evaluated 109 patients with PD over 40 years (57 men and 52 women) about the presence throughout the life of migraine, as well as the possibility of improvement in migraine after the onset of motor symptoms of PD. This group was compared to a control group of 152 people (41 men and 152 women) without PD regarding the presence of migraine and its improvement. Twenty-one patients manifested migraine in the group with PD (16 women and 5 men) in which 13 reported improvement in migraine after the onset of symptoms of PD. Among the controls, 37 interviewed had migraine history (32 women and 5 men) among which 20 showed improvement. There was no significant difference when comparing the two groups (χ21:0,05=0.337; P<0.382). We were unable to relate the improvement of migraine with the emergence of PD motor signs, despite the degeneration of dopaminergic pathways of the central nervous system.
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Affiliation(s)
| | | | - Jano Alves de Souza
- Headache Research Sector, Antônio Pedro University Hospital, Fluminense Federal University , Niterói
| | | | - João Santos Pereira
- Movement Disorders Section, Neurology Service, State University of Rio de Janeiro, Hospital Universitário Pedro Ernesto , Rio de Janeiro, Brazil
| | - Clayton Amaral
- Division of Neurology, Movement Disorders Unit; Headache Research Sector, Antônio Pedro University Hospital, Fluminense Federal University, Niterói
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Cui Q, Li X, Zhu H. Curcumin ameliorates dopaminergic neuronal oxidative damage via activation of the Akt/Nrf2 pathway. Mol Med Rep 2015; 13:1381-8. [PMID: 26648392 DOI: 10.3892/mmr.2015.4657] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 11/06/2015] [Indexed: 11/06/2022] Open
Abstract
UNLABELLED Parkinson's disease (PD) is an age-related complex neurodegenerative disease that affects ≤ 80% of dopaminergic neurons in the substantia nigra pars compacta (SNpc). It has previously been suggested that mitochondrial dysfunction, oxidative stress and oxidative damage underlie the pathogenesis of PD. Curcumin, which is a major active polyphenol component extracted from the rhizomes of Curcuma longa (Zingiberaceae), has been reported to exert neuroprotective effects on an experimental model of PD. The present study conducted a series of in vivo experiments, in order to investigate the effects of curcumin on behavioral deficits, oxidative damage and related mechanisms. The results demonstrated that curcumin was able to significantly alleviate motor dysfunction and increase suppressed tyrosine hydroxylase (TH) activity in the SNpc of rotenone (ROT)-injured rats. Biochemical measurements indicated that rats pretreated with curcumin exhibited increased glutathione (GSH) levels, and reduced reactive oxygen species activity and malondialdehyde content. Mechanistic studies demonstrated that curcumin significantly restored the expression levels of heme oxygenase-1 and NAD(P)H quinone oxidoreductase 1, thus ameliorating ROT-induced damage in vivo, via the phosphorylation of Akt and nuclear factor erythroid 2-related factor 2 (Nrf2). Further studies indicated that the Akt/Nrf2 signaling pathway was associated with the protective role of curcumin in ROT-treated rats. Inhibiting the Akt/Nrf2 pathway using a lentiviral vector containing Nrf2-specific short hairpin RNA, or the phosphoinositide 3-kinase inhibitor LY294002, markedly reduced the expression levels of TH and GSH, ultimately attenuating the neuroprotective effects of curcumin against oxidative damage. These results indicated that curcumin was able to significantly ameliorate ROT-induced dopaminergic neuronal oxidative damage in the SNpc of rats via activation of the Akt/Nrf2 signaling pathway.
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Affiliation(s)
- Qunli Cui
- Department of Neurology, The Second Teaching Hospital of Zhengzhou University, Zhengzhou, Henan 450014, P.R. China
| | - Xin Li
- Department of Neurology, The Second Teaching Hospital of Zhengzhou University, Zhengzhou, Henan 450014, P.R. China
| | - Hongcan Zhu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
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Tran T, Brophy JM, Suissa S, Renoux C. Risks of Cardiac Valve Regurgitation and Heart Failure Associated with Ergot- and Non-Ergot-Derived Dopamine Agonist Use in Patients with Parkinson's Disease: A Systematic Review of Observational Studies. CNS Drugs 2015; 29:985-98. [PMID: 26585874 DOI: 10.1007/s40263-015-0293-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND Dopamine agonists (DAs) are commonly used in the therapy of Parkinson's disease (PD). However, several observational studies have suggested a putative association between DAs and specific cardiac adverse events. OBJECTIVES The aim of this study was to systematically review and summarize the available epidemiologic evidence on the association between use of ergot- and non-ergot-derived DAs and the risk of valvular heart disease, specifically cardiac valve regurgitation (CVR) and heart failure (HF) in patients with PD. METHODS The databases MEDLINE/PubMed and EMBASE were searched for all relevant articles published before February 2015. Studies were eligible if they met the following inclusion criteria: exposure to any approved non-ergot- or ergot-derived DA, presentation of original data, inclusion of an unexposed reference group, and valvular heart disease or heart failure as the primary outcome of interest. RESULTS Thirteen publications for CVR were identified (two nested case-control, one cohort and ten cross-sectional studies). Compared with non-ergot DAs or other anti-parkinsonian drugs, exposure to ergot-derived DAs pergolide and cabergoline was associated with an increased risk of CVR among PD patients. Incidence rate ratios (IRR) in the nested case-control and cohort studies ranged from 2.00 to 7.10 and 4.58 to 4.90, respectively. Longer treatment duration and higher dose of those DAs was also associated with a higher risk of CVR. Risk of HF was estimated in three nested case-control studies and one cohort study. Use of cabergoline (IRR range 1.30-2.39) and the non-ergot-derived DA pramipexole (IRR range 1.40-1.81) was associated with a higher HF risk among patients with PD. Pergolide may also be associated with a higher risk of HF. CONCLUSION Despite the heterogeneous methodological approaches of the included studies, there is strong evidence that treatment with pergolide and cabergoline is associated with a higher risk of CVR, and moderate evidence that treatment with pramipexole and cabergoline is associated with a higher risk of HF in patients with Parkinson's disease.
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Affiliation(s)
- Tanja Tran
- Department of Epidemiology and Biostatistics, and of Medicine, McGill University, Montreal, Quebec, Canada
| | - James M Brophy
- Department of Epidemiology and Biostatistics, and of Medicine, McGill University, Montreal, Quebec, Canada
| | - Samy Suissa
- Department of Epidemiology and Biostatistics, and of Medicine, McGill University, Montreal, Quebec, Canada.,Center for Clinical Epidemiology, Lady Davis Research Institute, Jewish General Hospital, McGill University, 3755 Cote Ste-Catherine, Montreal, Quebec, H3T 1E2, Canada
| | - Christel Renoux
- Department of Epidemiology and Biostatistics, and of Medicine, McGill University, Montreal, Quebec, Canada. .,Center for Clinical Epidemiology, Lady Davis Research Institute, Jewish General Hospital, McGill University, 3755 Cote Ste-Catherine, Montreal, Quebec, H3T 1E2, Canada. .,Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada.
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Potential of Neural Stem Cell-Based Therapy for Parkinson's Disease. PARKINSONS DISEASE 2015; 2015:571475. [PMID: 26664823 PMCID: PMC4664819 DOI: 10.1155/2015/571475] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 11/03/2015] [Indexed: 12/14/2022]
Abstract
Neural stem cell (NSC) transplantation is an emerging strategy for restoring neuronal function in neurological disorders, such as Parkinson's disease (PD), which is characterized by a profound and selective loss of nigrostriatal dopaminergic (DA) neurons. Adult neurogenesis generates newborn neurons that can be observed at specialized niches where endothelial cells (ECs) play a significant role in regulating the behavior of NSCs, including self-renewal and differentiating into all neural lineage cells. In this minireview, we highlight the importance of establishing an appropriate microenvironment at the target site of NSC transplantation, where grafted cells integrate into the surroundings in order to enhance DA neurotransmission. Using a novel model of NSC-EC coculture, it is possible to combine ECs with NSCs, to generate such a neurovascular microenvironment. With appropriate NSCs selected, the composition of the transplant can be investigated through paracrine and juxtacrine signaling within the neurovascular unit (NVU). With target site cellular and acellular compartments of the microenvironment recognized, guided DA differentiation of NSCs can be achieved. As differentiated DA neurons integrate into the existing nigrostriatal DA pathway, the symptoms of PD can potentially be alleviated by reversing characteristic neurodegeneration.
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The Parkinsonian Gait Spatiotemporal Parameters Quantified by a Single Inertial Sensor before and after Automated Mechanical Peripheral Stimulation Treatment. PARKINSONS DISEASE 2015; 2015:390512. [PMID: 26495152 PMCID: PMC4606184 DOI: 10.1155/2015/390512] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 08/05/2015] [Accepted: 09/02/2015] [Indexed: 11/18/2022]
Abstract
This study aims to evaluate the change in gait spatiotemporal parameters in subjects with Parkinson's disease (PD) before and after Automated Mechanical Peripheral Stimulation (AMPS) treatment. Thirty-five subjects with PD and 35 healthy age-matched subjects took part in this study. A dedicated medical device (Gondola) was used to administer the AMPS. All patients with PD were treated in off levodopa phase and their gait performances were evaluated by an inertial measurement system before and after the intervention. The one-way ANOVA for repeated measures was performed to assess the differences between pre- and post-AMPS and the one-way ANOVA to assess the differences between PD patients and the control group. Spearman's correlations assessed the associations between patients with PD clinical status (H&Y) and the percentage of improvement of the gait variables after AMPS (α < 0.05 for all tests). The PD group had an improvement of 14.85% in the stride length; 14.77% in the gait velocity; and 29.91% in the gait propulsion. The correlation results showed that the higher the H&Y classification, the higher the stride length percentage of improvement. The treatment based on AMPS intervention seems to induce a better performance in the gait pattern of PD patients, mainly in intermediate and advanced stages of the condition.
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Huang L, Deng M, Fang Y, Li L. Dynamic changes of five neurotransmitters and their related enzymes in various rat tissues following β-asarone and levodopa co-administration. Exp Ther Med 2015; 10:1566-1572. [PMID: 26622527 DOI: 10.3892/etm.2015.2704] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 07/23/2015] [Indexed: 12/30/2022] Open
Abstract
The aim of the present study was to investigate the dynamic changes of five neurotransmitters and their associated enzymes in the rat plasma and brain tissues following the co-administration of β-asarone and levodopa (L-dopa). The rats were divided into five groups, including the control group and four treatment groups that were intragastrically co-administered β-asarone and L-dopa and sacrificed at 1, 5, 18 and 48 h, respectively. Neurotransmitter levels in the brain tissues and plasma were detected using high performance liquid chromatograph and the related enzymes of dopamine (DA) were measured using an enzyme-linked immunosorbent assay. The results indicated that the striatal levels of L-dopa and 3,4-dihydroxyphenylacetic acid (DOPAC) peaked at 1 h and then returned to the normal levels, while the striatal levels of DA were stable within 48 h. In the cortex and hippocampus tissue, L-dopa, DA, DOPAC and homovanillic acid (HVA) levels peaked at 1 h and then returned to normal levels. In the plasma, L-dopa, DA, DOPAC and HVA levels peaked at 1 h. Compared with the control group, L-dopa, DA and HVA levels were higher between 18 and 48 h, whereas the DOPAC level was lower. By contrast, no statistically significant differences were observed in the serotonin (5-HT) levels among the plasma, hippocampus, cortex and striatum. Furthermore, the DA/L-dopa ratio in the brain tissues and plasma increased in the first 5 h, while (DOPAC + HVA)/DA ratios demonstrated a significant reduction. Striatal tyrosine hydroxylase (TH) and aromatic amino acid decarboxylase (AADC) levels were higher compared with the control group; however, catechol-O-methyltransferase (COMT) and monoamine oxidase B levels were reduced. In the rat plasma, TH and COMT peaked at 1 h, while AADC peaked at 5 h. In conclusion, the results of the present study indicate that the co-administration of L-dopa and β-asarone may be used to maintain a stable striatal DA level within 48 h. In addition, this treatment may promote DA generation by AADC and reduce the metabolism of DA by COMT.
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Affiliation(s)
- Liping Huang
- Laboratory Center, The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China ; Hainan Medical University, Haikou, Hainan 571199, P.R. China
| | - Minzhen Deng
- Laboratory Center, The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Yongqi Fang
- Laboratory Center, The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Ling Li
- Laboratory Center, The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
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Jang W, Kim HJ, Li H, Jo KD, Lee MK, Yang HO. The Neuroprotective Effect of Erythropoietin on Rotenone-Induced Neurotoxicity in SH-SY5Y Cells Through the Induction of Autophagy. Mol Neurobiol 2015; 53:3812-3821. [PMID: 26156288 DOI: 10.1007/s12035-015-9316-x] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 06/23/2015] [Indexed: 12/25/2022]
Abstract
Currently, the autophagy pathway is thought to be important for the pathogenesis of Parkinson's disease (PD), and the modulation of autophagy may be a novel strategy for the treatment of this disease. Erythropoietin (EPO) has been reported to have neuroprotective effects through anti-oxidative, anti-apoptotic, and anti-inflammatory mechanisms, and it has also been shown to modulate autophagy signaling in an oxygen toxicity model. Therefore, we investigated the effects of EPO on autophagy markers and evaluated its neuroprotective effect on rotenone-induced neurotoxicity. We adapted the rotenone-induced neurotoxicity model to SH-SY5Y cells as an in vitro model of PD. We measured cell viability using MTT and annexin V/propidium iodide assays and measured intracellular levels of reactive oxygen species. Immunofluorescence analysis was performed to measure the expression of LC3 and α-synuclein. Intracellular signaling proteins associated with autophagy were examined by immunoblot analysis. EPO mono-treatment increased the levels of mammalian target of rapamycin (mTOR)-independent/upstream autophagy markers, including Beclin-1, AMPK, and ULK-1. Rotenone treatment of SH-SY5Y cells reduced their viability, increased reactive oxygen species levels, and induced apoptosis and α-synuclein expression, and simultaneous exposure to EPO significantly reduced these effects. Rotenone enhanced mTOR expression and suppressed Beclin-1 expression, indicating suppression of the autophagy system. However, combined treatment with EPO restored Beclin-1 expression and decreased mTOR expression. EPO protects against rotenone-induced neurotoxicity in SH-SY5Y cells by enhancing autophagy-related signaling pathways. The experimental evidence for the EPO-induced neuroprotection against rotenone-induced dopaminergic neurotoxicity may significantly impact the development of future PD treatment strategies.
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Affiliation(s)
- Wooyoung Jang
- Department of Neurology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Bangdong-ri, Sacheon-myeon, Gangneung, Gangwon-do, 210-711, Republic of Korea. .,Biomedical Research Center, Gangneung Asan Hospital, Bangdong-ri, Sacheon-myeon, Gangneung, 210-711, Gangwon-do, Republic of Korea.
| | - Hee Ju Kim
- Natural Products Research Center, Korea Institute of Science and Technology, 679 Saimdang-ro, Gangneung, 210-340, Republic of Korea.,Biomedical Research Center, Gangneung Asan Hospital, Bangdong-ri, Sacheon-myeon, Gangneung, 210-711, Gangwon-do, Republic of Korea
| | - Huan Li
- Natural Products Research Center, Korea Institute of Science and Technology, 679 Saimdang-ro, Gangneung, 210-340, Republic of Korea
| | - Kwang Deog Jo
- Department of Neurology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Bangdong-ri, Sacheon-myeon, Gangneung, Gangwon-do, 210-711, Republic of Korea
| | - Moon Kyu Lee
- Department of Neurology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Bangdong-ri, Sacheon-myeon, Gangneung, Gangwon-do, 210-711, Republic of Korea
| | - Hyun Ok Yang
- Natural Products Research Center, Korea Institute of Science and Technology, 679 Saimdang-ro, Gangneung, 210-340, Republic of Korea.
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Roeder L, Costello JT, Smith SS, Stewart IB, Kerr GK. Effects of Resistance Training on Measures of Muscular Strength in People with Parkinson's Disease: A Systematic Review and Meta-Analysis. PLoS One 2015; 10:e0132135. [PMID: 26146840 PMCID: PMC4492705 DOI: 10.1371/journal.pone.0132135] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 06/10/2015] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVE The aim of this systematic review and meta-analysis was to determine the overall effect of resistance training (RT) on measures of muscular strength in people with Parkinson's disease (PD). METHODS Controlled trials with parallel-group-design were identified from computerized literature searching and citation tracking performed until August 2014. Two reviewers independently screened for eligibility and assessed the quality of the studies using the Cochrane risk-of-bias-tool. For each study, mean differences (MD) or standardized mean differences (SMD) and 95% confidence intervals (CI) were calculated for continuous outcomes based on between-group comparisons using post-intervention data. Subgroup analysis was conducted based on differences in study design. RESULTS Nine studies met the inclusion criteria; all had a moderate to high risk of bias. Pooled data showed that knee extension, knee flexion and leg press strength were significantly greater in PD patients who undertook RT compared to control groups with or without interventions. Subgroups were: RT vs. control-without-intervention, RT vs. control-with-intervention, RT-with-other-form-of-exercise vs. control-without-intervention, RT-with-other-form-of-exercise vs. control-with-intervention. Pooled subgroup analysis showed that RT combined with aerobic/balance/stretching exercise resulted in significantly greater knee extension, knee flexion and leg press strength compared with no-intervention. Compared to treadmill or balance exercise it resulted in greater knee flexion, but not knee extension or leg press strength. RT alone resulted in greater knee extension and flexion strength compared to stretching, but not in greater leg press strength compared to no-intervention. DISCUSSION Overall, the current evidence suggests that exercise interventions that contain RT may be effective in improving muscular strength in people with PD compared with no exercise. However, depending on muscle group and/or training dose, RT may not be superior to other exercise types. Interventions which combine RT with other exercise may be most effective. Findings should be interpreted with caution due to the relatively high risk of bias of most studies.
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Affiliation(s)
- Luisa Roeder
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
- Movement Neuroscience Program, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
- Injury Prevention Program, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
- School of Exercise and Nutrition Sciences, Queensland University of Technology, Brisbane, QLD, Australia
| | - Joseph T. Costello
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
- School of Exercise and Nutrition Sciences, Queensland University of Technology, Brisbane, QLD, Australia
- Extreme Environments Laboratory (EEL), Department of Sport and Exercise Science, Spinnaker Building, Cambridge Road, University of Portsmouth, Portsmouth, PO1 2ER, United Kingdom
| | - Simon S. Smith
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
- Injury Prevention Program, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
- CARRS-Q, School of Psychology and Counselling, Queensland University of Technology, Brisbane, Australia
| | - Ian B. Stewart
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
- School of Exercise and Nutrition Sciences, Queensland University of Technology, Brisbane, QLD, Australia
| | - Graham K. Kerr
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
- Movement Neuroscience Program, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
- Injury Prevention Program, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
- School of Exercise and Nutrition Sciences, Queensland University of Technology, Brisbane, QLD, Australia
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Han SW, Cheon KY, Kim JY, Baik JS. Carpal Tunnel Syndrome in Patients with Tremor Dominant Parkinson's Disease. PLoS One 2015; 10:e0130779. [PMID: 26091110 PMCID: PMC4474427 DOI: 10.1371/journal.pone.0130779] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 05/22/2015] [Indexed: 11/18/2022] Open
Abstract
Background Unilateral hand tremor is one of the cardinal symptoms of Parkinson’s disease. Additionally, mechanical traumatic hand movement is one of the risk factors for carpal tunnel syndrome. Our objective in this study was to examine whether repetitive mechanical movement may be related to the development of carpal tunnel syndrome in Parkinson’s disease with unilateral hand tremor using neurophysiological methods. Methods The study participants included 33 de novo Parkinson’s disease patients with unilateral hand tremor, and we compared the tremor hand and non-tremor hand within the same patients. Results Seven (21.2%) of the 33 patients had carpal tunnel syndrome. All of carpal tunnel syndrome patients showed neurophysiological abnormalities in both the hand without tremor and the hand with tremor. In addition, in patients without carpal tunnel syndrome, the sensory nerve action potential was lower in the hand without tremor than in the hand with tremor, although there were no significant differences. Conclusions We concluded that hand tremor in de novo Parkinson’s disease patients was not directly related to the development of carpal tunnel syndrome. In contrast, more frequent use of hand without tremor may induce mechanical loading and may be associated with CTS in the hand without tremor. Early diagnosis of Parkinson’s disease and proper education in hand use may be essential for preventing carpal tunnel syndrome in Parkinson’s disease tremor patients.
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Affiliation(s)
- Sang Won Han
- Department of Neurology, Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - Kyeong Yeol Cheon
- Department of Neurology, Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - Jeong Yeon Kim
- Department of Neurology, Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - Jong Sam Baik
- Department of Neurology, Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea
- * E-mail:
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Pan S, Stutzbach J, Reichwein S, Lee BK, Dahodwala N. Knowledge and attitudes about Parkinson's disease among a diverse group of older adults. J Cross Cult Gerontol 2015; 29:339-52. [PMID: 24752756 DOI: 10.1007/s10823-014-9233-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Underserved minorities are vulnerable to diagnostic delays and under-treatment of Parkinson's disease (PD). The purpose of this mixed-methods study was to understand knowledge and attitudes about PD among a racially/ethnically diverse group of community members. In the qualitative arm, ten homogeneous focus groups of 6 to 8 White, African-American and Chinese American older adults at senior centers in Philadelphia were conducted. Next, for the quantitative arm, a questionnaire of knowledge and attitudes about PD was administered among a larger group of senior center members. Themes were identified from the focus group discussions. ANOVA and chi-square tests were used to assess differences in PD knowledge and attitudes among the different racial/ethnic groups. Logistic regression analyzed for independent factors associated with barriers to treatment. Seventy-five adults participated in the focus groups (23 Whites, 36 African-Americans and 16 Chinese-Americans) and 154 completed the questionnaire (62 Whites, 47 African-Americans and 45 Chinese-Americans). One common theme about developing PD was fear of losing independence. Racial/ethnic groups identified unique barriers to care: mistrust in the healthcare system by African-Americans and language difficulties by Chinese-Americans. Eighty percent of all participants had no to some knowledge of PD. African-Americans and Chinese-Americans were more likely to perceive PD as a part of normal aging than whites. Chinese-Americans were more likely to perceive barriers to treatment than whites. A diverse sample of older adults demonstrated low levels of PD knowledge through both qualitative and quantitative methods. Many barriers to PD care were identified. Targeted community outreach and education efforts should incorporate information about PD and how to receive care.
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Affiliation(s)
- Sarah Pan
- Department of Epidemiology and Biostatistics, Drexel University School of Public Health, Philadelphia, PA, USA
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Akbar U, He Y, Dai Y, Hack N, Malaty I, McFarland NR, Hess C, Schmidt P, Wu S, Okun MS. Weight loss and impact on quality of life in Parkinson's disease. PLoS One 2015; 10:e0124541. [PMID: 25938478 PMCID: PMC4418600 DOI: 10.1371/journal.pone.0124541] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Accepted: 03/15/2015] [Indexed: 12/16/2022] Open
Abstract
INTRODUCTION Weight loss is common in Parkinson's Disease (PD) and sometimes may precede the diagnosis. Weight loss is associated with multiple factors but its impact on health-related quality of life (HRQL) in PD remains unknown. We sought to investigate the factors associated with weight change and to quantify its effect on HRQL. METHODS The National Parkinson Foundation Quality Improvement Initiative (NPF-QII) data was used to analyze PD patients longitudinally between two visits, separated by 12 ± 6 months. Multiple linear regression analyses were used to assess the associations between baseline covariates and body weight change per month, and to evaluate whether, and to what degree, Parkinson's Disease Questionnaire (PDQ-39) scores were affected. RESULTS A higher Hoehn & Yahr stage, higher number of comorbidities, older age, lower MOCA estimate, and higher rate of levodopa usage were observed in patients who lost weight. Multivariate regression analysis indicated that age and levodopa usage were significantly associated with weight loss. Furthermore, monthly body weight loss was significantly associated with HRQL decline in PD patients. Loss of 1 lb (0.45 kg) per month was associated with a decline in QOL: an increase of 0.5% in PDQ-39 Summary Index score (p=0.004), and 1.1% and 1.5% increases in the mobility and ADL dimensions, respectively. CONCLUSION Weight loss in PD is common and seems to correlate with worsened HRQL. Awareness of factors associated with weight loss and its relation to HRQL may help practitioners improve patient management and expectations.
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Affiliation(s)
- Umer Akbar
- Department of Neurology, Brown University, Providence, Rhode Island, United States of America
- * E-mail:
| | - Ying He
- Department of Mathematics, Clarkson University, Potsdam, New York, United States of America
| | - Yunfeng Dai
- Department of Biostatistics, University of Florida, Gainesville, Florida, United States of America
| | - Nawaz Hack
- Department of Neurology, University of Florida, Gainesville, Florida, United States of America
| | - Irene Malaty
- Department of Neurology, University of Florida, Gainesville, Florida, United States of America
| | - Nikolaus R. McFarland
- Department of Neurology, University of Florida, Gainesville, Florida, United States of America
| | - Christopher Hess
- Department of Neurology, University of Florida, Gainesville, Florida, United States of America
| | - Peter Schmidt
- National Parkinson Foundation, Miami, Florida, United States of America
| | - Samuel Wu
- Department of Biostatistics, University of Florida, Gainesville, Florida, United States of America
| | - Michael S. Okun
- Department of Neurology, University of Florida, Gainesville, Florida, United States of America
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Auriemma RS, Pivonello R, Ferreri L, Priscitelli P, Colao A. Cabergoline use for pituitary tumors and valvular disorders. Endocrinol Metab Clin North Am 2015; 44:89-97. [PMID: 25732645 DOI: 10.1016/j.ecl.2014.10.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Cabergoline (CAB) is widely used for the medical treatment of pituitary tumors, particularly those associated with hormone hypersecretion. Whether treatment with CAB is associated with an increased risk of clinically relevant cardiac valve disease in patients with pituitary tumors is still debated. In most studies, CAB has been found not associated with an increased risk of significant valvulopathy, and no correlation has been shown between valvular abnormalities and CAB duration or cumulative dose. This review provides an overview of the studies reporting on the outcome of CAB in terms of cardiac valve disease in patients with pituitary tumors.
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Affiliation(s)
- Renata S Auriemma
- Ios-Coleman Medicina Futura Medical Center, Centro Direzionale, Naples 80143, Italy
| | - Rosario Pivonello
- Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, University "Federico II", via Sergio Pansini 5, Naples 80131, Italy
| | - Lucia Ferreri
- Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, University "Federico II", via Sergio Pansini 5, Naples 80131, Italy
| | - Prisco Priscitelli
- Ios-Coleman Medicina Futura Medical Center, Centro Direzionale, Naples 80143, Italy
| | - Annamaria Colao
- Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, University "Federico II", via Sergio Pansini 5, Naples 80131, Italy.
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Sheard JM, Ash S. Current practice in nutrition diagnosis and intervention for the management of Parkinson's disease in Australia and Canada. Nutr Diet 2015. [DOI: 10.1111/1747-0080.12118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jamie M. Sheard
- Institute of Health and Biomedical Innovation; Queensland University of Technology; Kelvin Grove Qld 4059 Australia
- School of Exercise and Nutrition Sciences; Queensland University of Technology; Kelvin Grove Qld 4059 Australia
| | - Susan Ash
- Institute of Health and Biomedical Innovation; Queensland University of Technology; Kelvin Grove Qld 4059 Australia
- School of Exercise and Nutrition Sciences; Queensland University of Technology; Kelvin Grove Qld 4059 Australia
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91
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Eklund E, Qvist J, Sandström L, Viklund F, Van Doorn J, Karlsson F. Perceived articulatory precision in patients with Parkinson's disease after deep brain stimulation of subthalamic nucleus and caudal zona incerta. CLINICAL LINGUISTICS & PHONETICS 2015; 29:150-166. [PMID: 25333411 DOI: 10.3109/02699206.2014.971192] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The effect of deep brain stimulation (DBS) of the subthalamic nucleus (STN) and caudal zona incerta (cZi) on speech articulation in patients with Parkinson's disease (PD) was investigated. Read speech samples were collected from nine patients with STN-DBS and 10 with cZi-DBS. The recordings were made pre-operatively and 12 months post-operatively with stimulator on and off (on medication). Blinded, randomised, repeated perceptual assessments were performed on words and isolated fricatives extracted from the recordings to assess (1) overall articulatory quality ratings, (2) frequency of occurrence of misarticulation patterns and (3) fricative production. Statistically significant worsening of articulatory measures on- compared with off-stimulation occurred in the cZi-DBS group, with deteriorated articulatory precision ratings, increased presence of misarticulations (predominately altered realisations of plosives and fricatives) and a reduced accuracy in fricative production. A similar, but not significant, trend was found for the STN-DBS group.
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Affiliation(s)
- Elisabeth Eklund
- Department of Clinical Sciences, Division of Speech and Language Pathology and
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92
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Bawaskar HS, Bawaskar PH, Bawaskar PH. RBC acetyl cholinesterase: A poor man's early diagnostic biomarker for familial alzheimer's and Parkinson's disease dementia. J Neurosci Rural Pract 2015; 6:33-8. [PMID: 25552849 PMCID: PMC4244785 DOI: 10.4103/0976-3147.143187] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Objective: Analysis of red blood cell acetyl cholinesterase (AChE) in a familial Alzheimer's diseases (AD) Parkinson's disease dementia (PDD) and their first generation. Setting: General hospital, Mahad district, Raigad. Patients and Methods: Clinically diagnosed patients of AD and PDD and their asymptomatic relatives. Their blood was collected in EDTA tube and transferred to laboratory at Mumbai. Result: Median red blood cell (RBC) cholinesterase levels amongst PDD, their first generation asymptomatic relatives, familial AD, asymptomatic relatives of AD, healthy controls, farmers exposed to pesticides (positive control) and other neurological condition without dementia (hypertension with TIA 1, sub-dural hematoma 2, hypothyroid 1, non-familial unilateral parkinsonism without dementia 3, writers cramps 2, hyponitremia 1 and cerebral palsy with non-fluent aphasia 1). Median values of RBC AChE were 19086.78 U/L, 15666.05 U/L, 9013.11 U/L, 7806.19 U/L, 14334.57 U/L, 9785.05 U/L and 13162.60 U/L, respectively. As compared to controls, RBC AChE levels were statistically significant among PDD (P = 0.004) and significantly lowered among familial AD patients (P = 0.010), relatives of patients (P = 0.010). Interpretations: Below the normal RBC AChE level is a potential biomarker in asymptomatic relatives of familial AD patients. RBC AChE is raised than normal level in patients suffering from PDD, where AChE inhibitors are helpful. However, RBC AChE level below the normal where AChE inhibitor may not be effective.
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Affiliation(s)
- Himmatrao Saluba Bawaskar
- Department of General Medicine, Bawaskar Hospital and Clinical Research Center, Mahad, Maharashtra, India
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93
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Kim SR, Chung SJ, Yoo SH. Factors contributing to malnutrition in patients with Parkinson's disease. Int J Nurs Pract 2014; 22:129-37. [DOI: 10.1111/ijn.12377] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Sung R Kim
- College of Nursing; Chonbuk National University; Jeonju Korea
| | - Sun J Chung
- Department of Neurology; Asan Medical Center; University of Ulsan College of Medicine; Seoul Korea
| | - Sung-Hee Yoo
- College of Nursing; Chonnam National University; Gwangju Korea
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94
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Wang XF, Zeng QG, Zeng Y, Man RY, Lu BX, Luo YF. Induction of GADD45α protects M17 neuroblastoma cells against MPP*. IUBMB Life 2014; 66:786-92. [PMID: 25469469 DOI: 10.1002/iub.1327] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2014] [Revised: 10/09/2014] [Accepted: 10/27/2014] [Indexed: 01/12/2023]
Abstract
Growth arrest and DNA-damage-inducible protein 45α (GADD45α) is an important member of the family of growth arrest and DNA damage-inducible (GADD) proteins. The expression patterns and possible roles of GADD45α in Parkinson's disease (PD) are so far less understood. In this study, we found that 1-methyl-4-phenylpyridinium (MPP+) treatment up-regulates the expression of GADD45α in both a time-dependent manner and a dose-dependent manner in human dopamine neuroblastoma M17 cells. The up-regulation of GADD45α was abolished by pretreatment with the c-Jun N-terminal kinases (JNK) inhibitor SP600125 but not the p38 specific inhibitor SB203580. Further study revealed that c-Jun silencing abolished the effects of MPP+ on the expression of GADD45α. Important, ChIP studies verified the ability of c-Jun to bind to the GADD45 promoter. In addition, we found that inhibition of GADD45α by small RNA interference exacerbates the impaired cell viability, LDH release, and apoptosis induced by MPP+. Correspondingly, silence of GADD45 exacerbated Caspase-3 activation induced by MPP+. These data suggested a neuroprotective effect of GADD45α against MPP+ neurotoxicity.
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Affiliation(s)
- Xiao-Feng Wang
- Department of Neurology, the Third Affiliated Hospital of Southern Medical University, Guangzhou, China
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95
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Abstract
Recent studies have reported a higher prevalence of pituitary tumors than previously thought. Among these tumors, prolactinomas occur in up to 66% of cases. Since the mid-1980s, the widespread use of dopamine agonists has facilitated the management of the majority of prolactinomas, allowing biological and tumoral control in most cases. The less frequent cases of resistant prolactinomas remain challenging despite a multimodal therapy approach. The understanding of genetic alterations in familial and aggressive pituitary tumors provides new perspectives in the management of some prolactinomas. Genetic screening should be considered, particularly in familial cases but also in young patients with macroprolactinomas, as some mutations can predict potential aggressiveness.
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Affiliation(s)
- Laurent Vroonen
- a Department of Endocrinology, CHU de Liège, University of Liège, 4000 Liège, Belgium
| | - Adrian F Daly
- a Department of Endocrinology, CHU de Liège, University of Liège, 4000 Liège, Belgium
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96
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Li M, Shi A, Pang H, Xue W, Li Y, Cao G, Yan B, Dong F, Li K, Xiao W, He G, Du G, Hu X. Safety, tolerability, and pharmacokinetics of a single ascending dose of baicalein chewable tablets in healthy subjects. JOURNAL OF ETHNOPHARMACOLOGY 2014; 156:210-5. [PMID: 25219601 DOI: 10.1016/j.jep.2014.08.031] [Citation(s) in RCA: 113] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Revised: 08/11/2014] [Accepted: 08/24/2014] [Indexed: 05/21/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The root of Scutellaria baicalensis Georgi has been used extensively in traditional Chinese medicine for the treatment of inflammation, fever, cough, dysentery, and hypertension. Baicalein is a flavonoid isolated from the root of Scutellaria baicalensis Georgi and is a novel neuroprotective agent under development for the treatment of Parkinson׳s disease. We aimed to investigate the pharmacokinetic (PK) properties of baicalein and its main metabolite, bacalin, after single-dose administration in healthy Chinese subjects. The safety and tolerability of baicalein were also assessed. MATERIALS AND METHODS This was a Phase I, randomized, double-blind, single-dose trial of baicalein (100-2800 mg) in 72 healthy adults. Samples of blood, urine and feces were collected at regular intervals up to 48 h after administration of the study drug. Baicalein and baicalin were then analyzed using liquid chromatography-tandem mass spectrometry (LC/MS/MS). The maximum concentration that the drug achieved after dosing (Cmax), time to Cmax (Tmax), terminal half-life (t₁/₂), area under the curve from time zero to time of last quantifiable concentration (AUC(0, t)), area under the curve from time zero to infinity (AUC(0, ∞)), apparent total plasma clearance (CL/F), and apparent total volume of distribution (V/F) were determined using non-compartmental models. Dose proportion was tested using a method combining the equivalence criterion and power model. Physical examinations, vital signs, ECG findings, hematology, and urinalysis were monitored before and at regular intervals after administration of the study drug. RESULTS The PK profile of baicelein and baicelin was characterized by a median Tmax of 0.75-3.5 h and 0.5-3 h, respectively, followed by a multiphasic profile with a t₁/₂ of 1.90-15.01 h and 4.22-10.80 h, respectively. The estimates of the proportionality coefficient (90% CI) for Cmax, AUC₀-t and AUC₀-∞ were 0.83 (0.70-0.96), 0.91 (0.81-1.00) and 0.92 (0.82-1.02), respectively. All values overlapped within the pre-specified range of (0.89-1.11), (0.93-1.07), and (0.93-1.07), respectively. Dose proportionality was inconclusive for a baicalein dose range of 100-2800 mg. The total urinary clearance of baicalein and baicalin was <1%. Approximately 27% of baicalein was eliminated as unchanged drug in feces. Baicalein was well tolerated. Eleven treatment-related adverse events were observed, and all were rated as "mild" and resolved without further treatment. No serious adverse events occurred. CONCLUSIONS Single oral doses of 100-2800 mg of baicalein were safe and well tolerated by healthy subjects. Clinical laboratory assessments showed no signs of toxicity in the liver or kidney. The favorable safety profile and PK properties warrant further clinical studies for baicalein.
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Affiliation(s)
- Min Li
- Beijing Key Laboratory of Drug Clinical Risk and Personalized Medication Evaluation, Department of Clinical pharmacology, Beijing Hospital of the Ministry of Health, Beijing 100730, China
| | - Aixin Shi
- Beijing Key Laboratory of Drug Clinical Risk and Personalized Medication Evaluation, Department of Clinical pharmacology, Beijing Hospital of the Ministry of Health, Beijing 100730, China.
| | - Hongxian Pang
- Beijing Key Laboratory of Drug Clinical Risk and Personalized Medication Evaluation, Department of Clinical pharmacology, Beijing Hospital of the Ministry of Health, Beijing 100730, China
| | - Wei Xue
- Beijing Key Laboratory of Drug Clinical Risk and Personalized Medication Evaluation, Department of Clinical pharmacology, Beijing Hospital of the Ministry of Health, Beijing 100730, China
| | - Yang Li
- Beijing Key Laboratory of Drug Clinical Risk and Personalized Medication Evaluation, Department of Clinical pharmacology, Beijing Hospital of the Ministry of Health, Beijing 100730, China
| | - Guoying Cao
- Beijing Key Laboratory of Drug Clinical Risk and Personalized Medication Evaluation, Department of Clinical pharmacology, Beijing Hospital of the Ministry of Health, Beijing 100730, China
| | - Bei Yan
- Beijing Key Laboratory of Drug Clinical Risk and Personalized Medication Evaluation, Department of Clinical pharmacology, Beijing Hospital of the Ministry of Health, Beijing 100730, China
| | - Fan Dong
- Beijing Key Laboratory of Drug Clinical Risk and Personalized Medication Evaluation, Department of Clinical pharmacology, Beijing Hospital of the Ministry of Health, Beijing 100730, China
| | - Kexin Li
- Beijing Key Laboratory of Drug Clinical Risk and Personalized Medication Evaluation, Department of Clinical pharmacology, Beijing Hospital of the Ministry of Health, Beijing 100730, China
| | - Wei Xiao
- StateKey Laboratory of New-tech for Chinese Medicine Pharmaceutical Process, JiangsuKanion Parmaceutical CO. LTD., Lianyungang, Jiangsu 222001, China
| | - Guorong He
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Guanhua Du
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Xin Hu
- Beijing Key Laboratory of Drug Clinical Risk and Personalized Medication Evaluation, Department of Clinical pharmacology, Beijing Hospital of the Ministry of Health, Beijing 100730, China
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97
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Konagaya S, Iwata H. Microencapsulation of dopamine neurons derived from human induced pluripotent stem cells. Biochim Biophys Acta Gen Subj 2014; 1850:22-32. [PMID: 25281770 DOI: 10.1016/j.bbagen.2014.09.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 09/10/2014] [Accepted: 09/24/2014] [Indexed: 10/24/2022]
Abstract
BACKGROUND Dopamine neurons derived from induced pluripotent stem cells have been widely studied for the treatment of Parkinson's disease. However, various difficulties remain to be overcome, such as tumor formation, fragility of dopamine neurons, difficulty in handling large numbers of dopamine neurons, and immune reactions. In this study, human induced pluripotent stem cell-derived precursors of dopamine neurons were encapsulated in agarose microbeads. Dopamine neurons in microbeads could be handled without specific protocols, because the microbeads protected the fragile dopamine neurons from mechanical stress. METHODS hiPS cells were seeded on a Matrigel-coated dish and cultured to induce differentiation into a dopamine neuronal linage. On day 18 of culture, cells were collected from the culture dishes and seeded into U-bottom 96-well plates to induce cell aggregate formation. After 5 days, cell aggregates were collected from the plates and microencapsulated in agarose microbeads. The microencapsulated aggregates were cultured for an additional 45 days to induce maturation of dopamine neurons. RESULTS Approximately 60% of all cells differentiated into tyrosine hydroxylase-positive neurons in agarose microbeads. The cells released dopamine for more than 40 days. In addition, microbeads containing cells could be cryopreserved. CONCLUSION hiPS cells were successfully differentiated into dopamine neurons in agarose microbeads. GENERAL SIGNIFICANCE Agarose microencapsulation provides a good supporting environment for the preparation and storage of dopamine neurons.
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Affiliation(s)
- Shuhei Konagaya
- Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Hiroo Iwata
- Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan.
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98
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Shujaat F, Soomro N, Khan M. The effectiveness of Kayaking exercises as compared to general mobility exercises in reducing axial rigidity and improve bed mobility in early to mid stage of Parkinson's disease. Pak J Med Sci 2014; 30:1094-8. [PMID: 25225533 PMCID: PMC4163239 DOI: 10.12669/pjms.305.5231] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2014] [Revised: 06/06/2014] [Accepted: 06/08/2014] [Indexed: 11/24/2022] Open
Abstract
Objective: To determine the effectiveness of kayaking exercises in the management of axial rigidity, improve bed mobility by improving trunk rotation in Parkinson’s patients. Methods: Experimental randomized controlled trail conducted at Physiotherapy department of IPM&R, DUHS and neurology Outpatient Department of Civil Hospital Karachi. Sample size of 48 was calculated with the use of openEpi. After baseline assessment 24 participants were assigned to each Kayaking exercise and general mobility exercise groups. Both groups received treatment for 75 minutes, 6 days a week for 4 weeks. Pre and post treatment measurements were determined by goniometer that assessed the cervical and thoracolumbar rotations whereas bed mobility was assessed by Modified Parkinson’s Activity Scale (MPAS). Results: In Kayaking group mean cervical spine left rotation increased from 32.95+ 9.66 to 47.25 + 10.58, right side cervical spine rotation increased from 34.00 + 10.32 to 47.58 + 11.96, left side thoracolumbar rotation increased from 23.67 + 4.70 to 28.16 + 3.44, right side thoracolumbar rotation increased from 20.79 + 5.34 to 26.45 + 4.62. In control group mean cervical spine left rotation increased from 34.66+ 9.26 to 43.08 + 8.70, right side cervical spine rotation increased from 35.37 + 9.77 to 43.83 + 9.59 , left side thoracolumbar rotation increased from 23.70 + 4.77 to 26.87 + 3.73, right side thoracicolumbar rotation increased from 21.16 + 5.29 to 24.95 + 4.53 (P value <0.001).. Bed mobility on MPAS scale also showed significant improvements (P value <0.001). Conclusion: Both Kayaking and general exercises resulted in significant improvements after 4 weeks of treatment. However, Kayaking exercises were slightly more beneficial than general exercises.
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Affiliation(s)
- Faiza Shujaat
- Faiza Shujaat, MSPT, Institute of Physical Medicine & Rehabilitation, Dow University of Health Sciences Karachi Pakistan
| | - Nabila Soomro
- Dr. Nabila Soomro, FCPS, Institute of Physical Medicine & Rehabilitation, Dow University of Health Sciences Karachi Pakistan
| | - Muhammad Khan
- Muhammad Khan, MSc.PT, Institute of Physical Medicine & Rehabilitation, Dow University of Health Sciences Karachi Pakistan
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99
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Cabezas R, Avila M, Gonzalez J, El-Bachá RS, Báez E, García-Segura LM, Jurado Coronel JC, Capani F, Cardona-Gomez GP, Barreto GE. Astrocytic modulation of blood brain barrier: perspectives on Parkinson's disease. Front Cell Neurosci 2014; 8:211. [PMID: 25136294 PMCID: PMC4120694 DOI: 10.3389/fncel.2014.00211] [Citation(s) in RCA: 272] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Accepted: 07/14/2014] [Indexed: 12/21/2022] Open
Abstract
The blood–brain barrier (BBB) is a tightly regulated interface in the Central Nervous System (CNS) that regulates the exchange of molecules in and out from the brain thus maintaining the CNS homeostasis. It is mainly composed of endothelial cells (ECs), pericytes and astrocytes that create a neurovascular unit (NVU) with the adjacent neurons. Astrocytes are essential for the formation and maintenance of the BBB by providing secreted factors that lead to the adequate association between the cells of the BBB and the formation of strong tight junctions. Under neurological disorders, such as chronic cerebral ischemia, brain trauma, Epilepsy, Alzheimer and Parkinson’s Diseases, a disruption of the BBB takes place, involving a lost in the permeability of the barrier and phenotypical changes in both the ECs and astrocytes. In this aspect, it has been established that the process of reactive gliosis is a common feature of astrocytes during BBB disruption, which has a detrimental effect on the barrier function and a subsequent damage in neuronal survival. In this review we discuss the implications of astrocyte functions in the protection of the BBB, and in the development of Parkinson’s disease (PD) and related disorders. Additionally, we highlight the current and future strategies in astrocyte protection aimed at the development of restorative therapies for the BBB in pathological conditions.
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Affiliation(s)
- Ricardo Cabezas
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana Bogotá, D.C., Colombia
| | - Marcos Avila
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana Bogotá, D.C., Colombia
| | - Janneth Gonzalez
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana Bogotá, D.C., Colombia
| | | | - Eliana Báez
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana Bogotá, D.C., Colombia
| | | | - Juan Camilo Jurado Coronel
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana Bogotá, D.C., Colombia
| | - Francisco Capani
- Laboratorio de Citoarquitectura y Plasticidad Neuronal, Facultad de Medicina, Instituto de Investigaciones cardiológicas Prof. Dr. Alberto C. Taquini (ININCA), UBA-CONICET, Buenos Aires Argentina
| | - Gloria Patricia Cardona-Gomez
- Cellular and Molecular Neurobiology Area, Group of Neuroscience of Antioquia, Faculty of Medicine, SIU, University of Antioquia UdeA Medellín, Colombia
| | - George E Barreto
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana Bogotá, D.C., Colombia
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100
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Jang W, Kim HJ, Li H, Jo KD, Lee MK, Song SH, Yang HO. 1,25-Dyhydroxyvitamin D3 attenuates rotenone-induced neurotoxicity in SH-SY5Y cells through induction of autophagy. Biochem Biophys Res Commun 2014; 451:142-7. [DOI: 10.1016/j.bbrc.2014.07.081] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Accepted: 07/17/2014] [Indexed: 11/25/2022]
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