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Journal of Parkinson's Disease

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https://www.readbyqxmd.com/read/28339403/dopamine-transporter-imaging-has-no-impact-on-functional-outcomes-in-de-novo-probable-parkinson-s-disease
#1
Patrick T Hickey, Maragatha Kuchibhatla, Burton Scott, Lisa Gauger, Mark A Stacy
BACKGROUND: Parkinson's disease (PD) is among the most prevalent neurodegenerative conditions. While motor and non-motor aspects of this disease have been well characterized, no objective biomarker exists to support an accurate clinical diagnosis. However, newer imaging techniques, including [123I]-FP-CIT (DaTSCAN), have demonstrated utility in differentiating between PD and non-neurodegenerative tremor disorders. OBJECTIVE: DaTSCAN has been primarily investigated in situations where diagnostic confusion exists, and in these instances has been shown to significantly impact clinical management...
March 20, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28282809/how-i-do-it-clinical-application-of-brain-mri-in-the-diagnostic-work-up-of-parkinsonism
#2
Frederick J A Meijer, Bozena Goraj, Bastiaan R Bloem, Rianne A J Esselink
Differentiating Parkinson's disease and atypical parkinsonism on clinical parameters is challenging, especially in early disease courses. This is due to large overlap in symptoms and because the so called red flags, i.e. symptoms indicating atypical parkinsonism, have not (fully) developed. Brain MRI can aid to improve the accuracy and confidence about the diagnosis. The main purpose of brain MRI is to assess cerebrovascular damage, and to exclude other possible - and sometimes treatable - causes of parkinsonism, such as normal pressure hydrocephalus...
March 6, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28234259/the-potential-role-of-gut-derived-inflammation-in-multiple-system-atrophy
#3
Phillip A Engen, Hemraj B Dodiya, Ankur Naqib, Christopher B Forsyth, Stefan J Green, Robin M Voigt, Jeffrey H Kordower, Ece A Mutlu, Kathleen M Shannon, Ali Keshavarzian
BACKGROUND: Recent evidence suggests that Parkinson's disease (PD) is associated with intestinal microbiota dysbiosis, abnormal intestinal permeability, and intestinal inflammation. OBJECTIVE: Our study aimed to determine if these gut abnormalities are present in another synucleinopathy, multiple system atrophy (MSA). METHODS: In six MSA and 11 healthy control subjects, we performed immunohistochemistry studies of colonic sigmoid mucosa to evaluate the intestinal barrier marker Zonula Occludens-1 and the endotoxin-related inflammation marker Toll-like-receptor-4 expression...
February 20, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28211816/levodopa-carbidopa-intestinal-gel-pharmacokinetics-lower-variability-than-oral-levodopa-carbidopa
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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/28282818/the-birth-of-the-modern-era-of-parkinson-s-disease-genetics
#12
Andrew B Singleton, John A Hardy, Thomas Gasser
No abstract text is available yet for this article.
2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28282817/introduction
#13
Brundin Patrik
No abstract text is available yet for this article.
2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28282816/my-25-stimulating-years-with-dbs-in-parkinson-s-disease
#14
Marwan Hariz
The year 2017 marks the 30th anniversary of the birth of modern deep brain stimulation (DBS), which was introduced by Benabid, Pollak et al. in 1987, initially targeting the motor thalamus to treat tremor, and subsequently targeting the subthalamic nucleus (STN) for treatment of symptoms of advanced Parkinson's disease (PD). STN DBS is undoubtedly "the most important discovery since levodopa", as stated by David Marsden in 1994. In 2014, The Lasker- DeBakey Clinical Medical Research Award to "honor two scientists who developed deep brain stimulation of the subthalamic nucleus", was bestowed upon Benabid and DeLong...
2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28282815/the-mptp-story
#15
J William Langston
No abstract text is available yet for this article.
2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28282814/the-synucleinopathies-twenty-years-on
#16
Michel Goedert, Ross Jakes, Maria Grazia Spillantini
In 2017, it is two hundred years since James Parkinson provided the first complete clinical description of the disease named after him, fifty years since the introduction of high-dose D,L-DOPA treatment and twenty years since α-synuclein aggregation came to the fore. In 1998, multiple system atrophy joined Parkinson's disease and dementia with Lewy bodies as the third major synucleinopathy. Here we review our work, which led to the identification of α-synuclein in Lewy bodies, Lewy neurites and Papp-Lantos bodies, as well as what has happened since...
2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28282813/l-dopa
#17
Oleh Hornykiewicz
No abstract text is available yet for this article.
2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28282812/the-identification-of-alpha-synuclein-as%C3%A2-the%C3%A2-first-parkinson-disease-gene
#18
Robert L Nussbaum
In this Commentary, I describe the events that led from an NINDS-sponsored Workshop on Parkinson Disease Research in 1995, where I was asked to speak about the genetics of Parkinson disease, to the identification a mere two years later of a mutation in alpha-synuclein as the cause of autosomal dominant Parkinson disease in the Contursi kindred. I review the steps we took to first map and then find the mutation in the alpha-synuclein locus and describe the obstacles and the role of serendipity in facilitating the work...
2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28282811/replacing-dopamine-neurons-in%C3%A2-parkinson-s-disease-how-did-it-happen
#19
Anders Björklund, Olle Lindvall
The efforts to develop a dopamine cell replacement therapy for Parkinson's disease have spanned over more than three decades. Based on almost 10 years of transplantation studies in animal models, the first patients receiving grafts of fetal-derived dopamine neuroblasts were operated in Lund in 1987. Over the following two decades, a total of 18 patients were transplanted and followed closely by our team with mixed but also very encouraging results. In this article we tell the story of how the preclinical and clinical transplantation program in Lund evolved...
2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28282810/neuropathological-staging-of-brain-pathology-in-sporadic-parkinson-s-disease-separating-the-wheat-from-the-chaff
#20
Heiko Braak, Kelly Del Tredici
A relatively small number of especially susceptible nerve cell types within multiple neurotransmitter systems of the human central, peripheral, and enteric nervous systems (CNS, PNS, ENS) become involved in the degenerative process underlying sporadic Parkinson's disease (sPD). The six-stage model we proposed for brain pathology related to sPD (Neurobiol Aging 2003) was a retrospective study of incidental and clinically diagnosed cases performed on unconventionally thick tissue sections (100 μm) from a large number of brain regions...
2017: Journal of Parkinson's Disease
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