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Journal of Parkinson's Disease

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https://www.readbyqxmd.com/read/28211816/levodopa-carbidopa-intestinal-gel-pharmacokinetics-lower-variability-than-oral-levodopa-carbidopa
#1
Ahmed A Othman, Matthew Rosebraugh, Krai Chatamra, Charles Locke, Sandeep Dutta
In a double-blind, double-dummy, double-titration Phase 3 trial in advanced Parkinson's disease (PD) patients, the efficacy and safety of Levodopa-carbidopa intestinal gel (LCIG) infusion were characterized relative to immediate-release oral levodopa-carbidopa (LC-oral) treatment. We present in this report the comparative pharmacokinetic profiles of LCIG and LC-oral from this pivotal study. The results presented in this report clearly demonstrate that LCIG results in lower variability and fluctuations in levodopa and carbidopa plasma concentrations compared to LC-oral...
February 16, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28222538/vps35-the-retromer-complex-and-parkinson-s-disease
#2
Erin T Williams, Xi Chen, Darren J Moore
Mutations in the vacuolar protein sorting 35 ortholog (VPS35) gene encoding a core component of the retromer complex, have recently emerged as a new cause of late-onset, autosomal dominant familial Parkinson's disease (PD). A single missense mutation, AspD620Asn (D620N), has so far been unambiguously identified to cause PD in multiple individuals and families worldwide. The exact molecular mechanism(s) by which VPS35 mutations induce progressive neurodegeneration in PD are not yet known. Understanding these mechanisms, as well as the perturbed cellular pathways downstream of mutant VPS35, is important for the development of appropriate therapeutic strategies...
February 8, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28222537/timing-and-kinetics-of-nonmotor-fluctuations-in-advanced-parkinson-s-disease
#3
Christiana Ossig, Daniel Sippel, Mareike Fauser, Florin Gandor, Wolfgang H Jost, Georg Ebersbach, Alexander Storch
BACKGROUND: Nonmotor symptoms (NMS) are known to fluctuate together with motor oscillations in advanced PD, but their timing and kinetics remains enigmatic. OBJECTIVE: To evaluate timing and kinetics of NMS fluctuations. METHODS: Analysis of diary data from 17 fluctuating PD patients. Diaries were completed by rating NMS as absent (defined herein as NMS On state) or present (NMS Off state) and motor function for every hour for 5 consecutive days...
February 8, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28222536/predictors-of-recurrent-falls-in-people-with%C3%A2-parkinson-s-disease-and-proposal-for%C3%A2-a%C3%A2-predictive-tool
#4
Lorena R S Almeida, Guilherme T Valenca, Nádja N Negreiros, Elen B Pinto, Jamary Oliveira-Filho
BACKGROUND: Falls are a debilitating problem for people with Parkinson's disease (PD). OBJECTIVES: To compare clinical and functional characteristics of non-fallers, single and recurrent fallers (≥2 falls); to determine predictors of time to second fall; and to develop a predictive tool for identifying people with PD at different categories of falls risk. METHODS: Participants (n = 229) were assessed by disease-specific, self-report and balance measures and followed up for 12 months...
February 8, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28157109/objective-colonic-dysfunction-is-far-more-prevalent-than-subjective-constipation-in-parkinson-s-disease-a-colon-transit-and-volume-study
#5
Karoline Knudsen, Tatyana D Fedorova, Anne C Bekker, Peter Iversen, Karen Østergaard, Klaus Krogh, Per Borghammer
BACKGROUND: Gastrointestinal function has received increased interest in the context of Parkinson's disease (PD). Constipation is among the most frequent non-motor symptoms, but our understanding of the underlying pathology is limited. Subjective constipation correlates poorly with objective markers. OBJECTIVE: The aims were to evaluate colonic transit time and volume in PD and to correlate these measures with subjective symptoms and gastric emptying. METHODS: Thirty-two PD patients and 26 controls were included...
January 30, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28157108/the-prevalence-of-constipation-and-irritable-bowel-syndrome-in-parkinson-s-disease-patients-according-to-rome-iii-diagnostic-criteria
#6
Takayasu Mishima, Jiro Fukae, Shinsuke Fujioka, Kotoe Inoue, Yoshio Tsuboi
BACKGROUND: Gastrointestinal symptoms are one of the most common non-motor features of Parkinson's disease (PD). Recently, a report from Taiwan revealed that irritable bowel syndrome (IBS) may be associated with an increased risk of developing PD; however, the prevalence of IBS in PD patients has not been fully evaluated. Rome III criteria are widely assessed with a questionnaire to determine functional gastrointestinal disorders. OBJECTIVE: We assessed the prevalence of constipation and IBS in PD patients in our cohort using Rome III criteria...
January 30, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28157107/the-cross-sectional-area-of-paraspinal-muscles-predicts-the-efficacy-of-deep-drain-stimulation-for-camptocormia
#7
Waka Sakai, Shunya Nakane, Eiichirou Urasaki, Keisuke Toyoda, Eisaku Sadakata, Akiko Nagaishi, Takayasu Fukudome, Yuzo Yamakawa, Hidenori Matsuo
BACKGROUND: Camptocormia, a disturbance of posture, is a well-described clinical feature of PD and other parkinsonian syndromes. Previous reports have shown that DBS of the subthalamic nucleus (STN) or globus pallidus internus is effective in treating camptocormia. However, the efficacy of DBS for camptocormia varies. OBJECTIVE: To determine a clinical marker for selecting an appropriate therapy for camptocormia, a disabling manifestation of Parkinson's disease (PD) that has a variable response to systemic and local therapies...
January 30, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28157106/disability-in-activities-of-daily-living-and%C3%A2-severity-of-dyskinesias-determine-the%C3%A2-handicap-of-parkinson-s-disease-patients-in%C3%A2-advanced-stage-selected-to-dbs
#8
Miguel Coelho, Daisy Abreu, Leonor Correia-Guedes, Patricia Pita Lobo, Margherita Fabbri, Catarina Godinho, Josefa Domingos, Luisa Albuquerque, Vanda Freitas, João Miguel Pereira, Begona Cattoni, Herculano Carvalho, Sofia Reimão, Mário M Rosa, António Gonalves Ferreira, Joaquim J Ferreira
BACKGROUND: There is scarce data on the level of handicap in Parkinson's disease (PD) and none in advanced stage PD. OBJECTIVE: To assess the handicap in advanced stage PD patients with disabling levodopa-induced motor complications selected to deep brain stimulation (DBS). METHODS: Data was prospectively recorded during routine evaluation for DBS. Handicap was measured using London Handicap Scale (LHS) (0 = maximal handicap; 1 = no handicap)...
January 30, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28222540/top-altmetric-scores-in-the-parkinson-s-disease-literature
#9
Rui Araújo, Aaron A Sorensen, Stacy Konkiel, Bastiaan R Bloem
A new class of social web-based metrics for scholarly publications (altmetrics) has surfaced as a complement to traditional citation-based metrics. Our aim was to study and characterize those recent papers in the field of Parkinson's disease which had received the highest Altmetric Attention Scores and to compare this attention measure to the traditional metrics. The top 20 papers in our analysis covered a variety of topics, mainly new disease mechanisms, treatment options and risk factors for the development of PD...
2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28222539/technologies-assessing-limb-bradykinesia-in-parkinson-s-disease
#10
Hasan Hasan, Dilan S Athauda, Thomas Foltynie, Alastair J Noyce
BACKGROUND: The MDS-UPDRS (Movement Disorders Society - Unified Parkinson's Disease Rating Scale) is the most widely used scale for rating impairment in PD. Subscores measuring bradykinesia have low reliability that can be subject to rater variability. Novel technological tools can be used to overcome such issues. OBJECTIVE: To systematically explore and describe the available technologies for measuring limb bradykinesia in PD that were published between 2006 and 2016...
2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28106569/cerebellar-volume-and-executive-function-in-parkinson-disease-with-and-without-freezing-of-gait
#11
Peter S Myers, Marie E McNeely, Jonathan M Koller, Gammon M Earhart, Meghan C Campbell
BACKGROUND: Freezing of gait (FOG) affects approximately 50% of people with Parkinson Disease (PD), impacting quality of life and placing financial and emotional strain on the individual and caregivers. People with PD and FOG have similar deficits in motor adaptation and cognition as individuals with cerebellar lesions, indicating the cerebellum may play a role in FOG. OBJECTIVE: To examine potential differences in cerebellar volumes and their relationships with cognition between PD with (FOG+) and without FOG (FOG-)...
2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28106568/physical-therapy-versus-a-general-exercise-programme-in-patients-with-hoehn-yahr-stage-ii-parkinson-s-disease-a%C3%A2-randomized-controlled-trial
#12
Savina Dipasquale, Roberto Meroni, Francesco Sasanelli, Ivan Messineo, Daniele Piscitelli, Cecilia Perin, Cesare Maria Cornaggia, Cesare G Cerri
BACKGROUND AND OBJECTIVE: Several studies suggest that general exercise (GE) and physical therapy programmes (PT) improve the outcomes of Parkinson's disease (PD) patients; however, the available data do not allow a determination of which treatment is more effective. Our study aims to compare the effects of physiotherapy and general exercise in Parkinson's disease. METHODS: Design and setting: Randomized controlled trial -general hospital outpatient clinic. The participants were patients with Hoehn Yahr stage II PD...
2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28106567/fractional-anisotropy-and-mean-diffusion-as-measures-of-dopaminergic-function-in-parkinson-s-disease-challenging-results
#13
Niklas Lenfeldt, Johan Eriksson, Björn Åström, Lars Forsgren, Susanna Jakobson Mo
BACKGROUND: Diffusion tensor imaging (DTI) has been purported as an imaging technique to assess dopaminergic degeneration in Parkinson's disease. OBJECTIVE: To test if fractional anisotropy (FA) and mean diffusion (MD) in the basal ganglia as measured by DTI correlates with dopaminergic function as measured by dopamine transporter (DAT) and dopamine D2-receptor (D2R) SPECT. METHODS: One-hundred and eleven patients with Parkinson's disease (71±10 years) and thirty-one controls (68±7 years) performed DTI, DAT and D2R SPECT at baseline and four follow-ups (1-year: 89 patients/zero controls; 3-year: 72/11; 5-year: 48/17; and 8-year: 13/13)...
2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28106566/cerebral-amyloid-burden-and-hoehn-and-yahr-stage-3-scoring-in-parkinson-disease
#14
Vikas Kotagal, Nicolaas I Bohnen, Martijn L T M Müller, Kirk A Frey, Roger L Albin
BACKGROUND: Progression to Hoehn and Yahr (HY) stage 3 marks the transition to advanced disease staging and disability in Parkinson disease (PD). OBJECTIVE/METHODS: We conducted a case-control study of 36 PD subjects at HY stage 2.5 or 3, with groups matched for gender, age, and disease duration. Positron Emission tomography (PET) imaging included dihydrotetrabenazine [11C]DTBZ and Pittsburgh Compound B [11C]PiB. RESULTS: Subjects with HY 2...
2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28035939/could-mao-b-inhibitor-withdrawal-rather-than-nilotinib-benefit-explain-the-dopamine-metabolite-increase-in-parkinsonian-study-subjects
#15
Michael A Schwarzschild
No abstract text is available yet for this article.
2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/27911344/patient-perspectives-on-deep-brain-stimulation-clinical-research-in-early-stage-parkinson-s-disease
#16
Lauren Heusinkveld, Mallory Hacker, Maxim Turchan, Madelyn Bollig, Christina Tamargo, William Fisher, Lauren McLaughlin, Adria Martig, David Charles
The FDA has approved a multicenter, double-blind, Phase III, pivotal trial testing deep brain stimulation (DBS) in 280 people with very early stage Parkinson's disease (PD; IDE#G050016). In partnership with The Michael J. Fox Foundation for Parkinson's Research, we conducted a survey to investigate motivating factors, barriers, and gender differences among potentially eligible patients for participation in a trial testing DBS in early PD compared to standard medical treatment. The majority of survey respondents (72%) indicated they would consider learning more about participating...
2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/27911343/pink1-parkin-and-mitochondrial-quality-control-what-can-we-learn-about-parkinson-s-disease-pathobiology
#17
Dominika Truban, Xu Hou, Thomas R Caulfield, Fabienne C Fiesel, Wolfdieter Springer
The first clinical description of Parkinson's disease (PD) will embrace its two century anniversary in 2017. For the past 30 years, mitochondrial dysfunction has been hypothesized to play a central role in the pathobiology of this devastating neurodegenerative disease. The identifications of mutations in genes encoding PINK1 (PTEN-induced kinase 1) and Parkin (E3 ubiquitin ligase) in familial PD and their functional association with mitochondrial quality control provided further support to this hypothesis. Recent research focused mainly on their key involvement in the clearance of damaged mitochondria, a process known as mitophagy...
2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/27911342/impulsive-and-compulsive-behaviors-in%C3%A2-parkinson-s-disease-the-norwegian-parkwest-study
#18
Aleksander H Erga, Guido Alves, Jan Petter Larsen, Ole Bj Rn Tysnes, Kenn Freddy Pedersen
BACKGROUND: Impulsive and compulsive behaviors (ICBs) are frequent in Parkinson's disease (PD), but data from population-based cohorts is lacking. OBJECTIVES: To determine the frequency and associated demographic, clinical, neuropsychiatric and cognitive features of ICBs in a population-based PD cohort. METHODS: This cross-sectional study included 125 patients with PD and 159 age- and gender-matched normal controls recruited from the Norwegian ParkWest study...
2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/27911341/longer-duration-of-mao-b-inhibitor-exposure-is-associated-with-less-clinical-decline-in-parkinson-s-disease-an%C3%A2-analysis%C3%A2-of%C3%A2-net-pd-ls1
#19
Robert A Hauser, Ruosha Li, Adriana Pérez, Xuehan Ren, Dan Weintraub, Jordan Elm, John L Goudreau, John C Morgan, John Y Fang, Michael J Aminoff, Chadwick W Christine, Rohit Dhall, Chizoba C Umeh, James T Boyd, Natividad Stover, Maureen Leehey, Richard M Zweig, Anthony P Nicholas, Ivan Bodis-Wollner, Allison Willis, Karl Kieburtz, Barbara C Tilley
BACKGROUND: Monoamine oxidase type B (MAO-B) inhibitors exhibit neuroprotective effects in preclinical models of PD but clinical trials have failed to convincingly demonstrate disease modifying benefits in PD patients. OBJECTIVE: To perform a secondary analysis of NET-PD LS1 to determine if longer duration of MAO-B inhibitor exposure was associated with less clinical decline. METHODS: The primary outcome measure was the Global Outcome (GO), comprised of 5 measures: change from baseline in the Schwab and England (ADL) scale, the 39-item Parkinson's Disease Questionnaire (PDQ-39), the UPDRS Ambulatory Capacity Scale, the Symbol Digit Modalities Test, and the most recent Modified Rankin Scale...
2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/27911340/dementia-predictors-in-parkinson-disease-a-validation-study
#20
Julius B M Anang, Takashi Nomura, Silvia Rios Romenets, Kenji Nakashima, Jean-Francois Gagnon, Ronald B Postuma
In a prospective study, we recently discovered 8 clinical predictors of dementia in Parkinson's disease. Here, we validate these dementia predictors using two additional prospective cohorts (n = 134). After a 3.6-year follow-up, 35/134 developed dementia (7.2% per year). When confirming individual variables, 5/8 were significantly associated with dementia in the validation cohort. These included age, male sex, baseline RBD, orthostatic hypotension, and MCI. Bilateral onset, hallucinations and falls/freezing did not significantly predict dementia; however, point estimates of OR were all >1...
2017: Journal of Parkinson's Disease
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