scholarly journals The Amphetamine Induced Rotation Test: A Re-Assessment of Its Use as a Tool to Monitor Motor Impairment and Functional Recovery in Rodent Models of Parkinson’s Disease

2019 ◽  
Vol 9 (1) ◽  
pp. 17-29 ◽  
Author(s):  
Anders Björklund ◽  
Stephen B. Dunnett
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Functional Recovery ◽  
Motor Impairment ◽  
Rodent Models ◽  
Rotation Test

scholarly journals Grafts Derived from an α-Synuclein Triplication Patient Mediate Functional Recovery but Develop Disease-Associated Pathology in the 6-OHDA Model of Parkinson’s Disease

2020 ◽  
pp. 1-14
Author(s):  
Shelby Shrigley ◽  
Fredrik Nilsson ◽  
Bengt Mattsson ◽  
Alessandro Fiorenzano ◽  
Janitha Mudannayake ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Cell Lines ◽  
Functional Recovery ◽  
Embryonic Stem ◽  
Hesc Line ◽  
Alternative Source ◽  
And Function

Background: Human induced pluripotent stem cells (hiPSCs) have been proposed as an alternative source for cell replacement therapy for Parkinson’s disease (PD) and they provide the option of using the patient’s own cells. A few studies have investigated transplantation of patient-derived dopaminergic (DA) neurons in preclinical models; however, little is known about the long-term integrity and function of grafts derived from patients with PD. Objective: To assess the viability and function of DA neuron grafts derived from a patient hiPSC line with an α-synuclein gene triplication (AST18), using a clinical grade human embryonic stem cell (hESC) line (RC17) as a reference control. Methods: Cells were differentiated into ventral mesencephalic (VM)-patterned DA progenitors using an established GMP protocol. The progenitors were then either terminally differentiated to mature DA neurons in vitro or transplanted into 6-hydroxydopamine (6-OHDA) lesioned rats and their survival, maturation, function, and propensity to develop α-synuclein related pathology, were assessed in vivo. Results: Both cell lines generated functional neurons with DA properties in vitro. AST18-derived VM progenitor cells survived transplantation and matured into neuron-rich grafts similar to the RC17 cells. After 24 weeks, both cell lines produced DA-rich grafts that mediated full functional recovery; however, pathological changes were only observed in grafts derived from the α-synuclein triplication patient line. Conclusion: This data shows proof-of-principle for survival and functional recovery with familial PD patient-derived cells in the 6-OHDA model of PD. However, signs of slowly developing pathology warrants further investigation before use of autologous grafts in patients.

scholarly journals Parkinson’s Disease Motor Symptom Progression Slowed with Multisensory Dance Learning over 3-Years: A Preliminary Longitudinal Investigation

2021 ◽  
Vol 11 (7) ◽  
pp. 895
Author(s):  
Karolina A. Bearss ◽  
Joseph F. X. DeSouza
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Daily Living ◽  
Rating Scale ◽  
Motor Impairment ◽  
Motor Dysfunction ◽  
Motor Symptom ◽  
Significant Group ◽  
Rate Of Decline ◽  
Symptom Progression

Parkinson’s disease (PD) is a neurodegenerative disease that has a fast progression of motor dysfunction within the first 5 years of diagnosis, showing an annual motor rate of decline of the Movement Disorder Society Unified Parkinson’s Disease Rating Scale (MDS-UPDRS) between 5.2 and 8.9 points. We aimed to determine both motor and non-motor PD symptom progression while participating in dance classes once per week over a period of three years. Longitudinal data was assessed for a total of 32 people with PD using MDS-UPDRS scores. Daily motor rate of decline was zero (slope = 0.000146) in PD-Dancers, indicating no motor impairment, whereas the PD-Reference group showed the expected motor decline across three years (p < 0.01). Similarly, non-motor aspects of daily living, motor experiences of daily living, and motor complications showed no significant decline. A significant group (PD-Dancers and PD-Reference) by days interaction showed that PD who train once per week have less motor impairment (M = 18.75) than PD-References who do not train (M = 24.61) over time (p < 0.05). Training is effective at slowing both motor and non-motor PD symptoms over three years as shown in decreased scores of the MDS-UPDRS.

Xenotransplantation of Porcine Fetal Ventral Mesencephalon in a Rat Model of Parkinson's Disease: Functional Recovery and Graft Morphology

1996 ◽  
Vol 140 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Wendy R. Galpern ◽  
Lindsay H. Burns ◽  
Terrence W. Deacon ◽  
Jonathan Dinsmore ◽  
Ole Isacson
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Functional Recovery ◽  
Rat Model ◽  
Ventral Mesencephalon ◽  
Graft Morphology

scholarly journals LY503430: Pharmacology, Pharmacokinetics, and Effects in Rodent Models of Parkinson's Disease

2006 ◽  
Vol 11 (1) ◽  
pp. 77-96 ◽  
Author(s):  
Michael J. O'Neill ◽  
Tracey K. Murray ◽  
Michael P. Clay ◽  
Terry Lindstrom ◽  
Charles R. Yang ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Rodent Models

scholarly journals Neuroprotection and Functional Recovery Associated with Decreased Microglial Activation Following Selective Activation of mGluR2/3 Receptors in a Rodent Model of Parkinson's Disease

2010 ◽  
Vol 2010 ◽  
pp. 1-12 ◽  
Author(s):  
Hugh Chan ◽  
Helen Paur ◽  
Anthony C. Vernon ◽  
Virginia Zabarsky ◽  
Krishna P. Datla ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Functional Recovery ◽  
Metabotropic Glutamate Receptor ◽  
Glutamate Excitotoxicity ◽  
Nigrostriatal System ◽  
Antiinflammatory Action ◽  
Metabotropic Glutamate ◽  
Beneficial Effects ◽  
6 Hydroxydopamine

Clinical trials have demonstrated positive proof of efficacy of dual metabotropic glutamate receptor 2/3 (mGluR2/3) agonists in both anxiety and schizophrenia. Importantly, evidence suggests that these drugs may also be neuroprotective against glutamate excitotoxicity, implicated in the pathogenesis of Parkinson's disease (PD). However, whether this neuroprotection also translates into functional recovery is unclear. In the current study, we examined the neuroprotective efficacy of the dual mGluR2/3 agonist, 2R,4R-4-aminopyrrolidine-2,4-dicarboxylate (2R,4R-APDC), and whether this is accompanied by behavioral recovery in a rodent 6-hydroxydopamine (6-OHDA) model of PD. We now report that delayed post lesion treatment with 2R,4R-APDC (10 nmol), results in robust neuroprotection of the nigrostriatal system, which translated into functional recovery as measured by improved forelimb use asymmetry and reduced (+)-amphetamine-induced rotation compared to vehicle treated animals. Interestingly, these beneficial effects were associated with a decrease in microglial markers in the SNc, which may suggest an antiinflammatory action of this drug.

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