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Research papers


Measurement and diagnosis research papers

  • npj Parkinson's Disease Blood biomarker for Parkinson disease: peptoidsAuthors identified a peptoid, PD2, which binds significantly higher levels of IgG3 antibody in PD versus control subjects (P<0.0001) and is 68% accurate in identifying PD. 23 June 2016
  • Movement Disorders Volume 31 Issue 6 The NINDS Parkinson's disease biomarkers programConclusions: By making samples and data widely available, using stringent operating procedures based on existing standards, hypothesis testing for biomarker discovery, and providing a resource that complements existing programs, the Parkinson's Disease Biomarker Program will accelerate the pace of PD biomarker research. 15 June 2016
  • Movement Disorders Volume 31 Issue 6 The BioFIND study: Characteristics of a clinically typical Parkinson's disease biomarker cohortThe study cohort provides a valuable resource for biomarker discovery and validation in PD. Clinical data and biospecimens, available through The Michael J. Fox Foundation for Parkinson's Research and the National Institute of Neurological Disorders and Stroke, can serve as a platform for discovering biomarkers in clinically typical PD and comparisons across PD's broad and heterogeneous spectrum. 15 June 2016
  • Movement Disorders Volume 31 Issue 6 Longitudinal Measurements of Cerebrospinal Fluid Biomarkers in Parkinson's DiseaseConclusion: CSF biomarkers reflecting Lewy body pathology and neurodegeneration (α-synuclein), neuronal degeneration (tau, phosphorylated tau, and neurofilament light), and inflammation (YKL-40) increase significantly over 2 years in PD. CSF levels of α-synuclein and tau correlate and remain stable in the early symptomatic phase of PD but increase in the later phase. Authors hypothesize that CSF α-synuclein levels might increase as a result of more intense neurodegeneration in PD with long disease duration. 15 June 2016
  • Movement Disorders Volume 31 Issue 6 Cerebrospinal fluid biomarkers and clinical features in leucine-rich repeat kinase 2 (LRRK2) mutation carriersConclusion: The CSF protein profile differs in LRRK2-associated PD and idiopathic PD, suggesting that pathophysiological mechanisms different from IPD underlie LRRK2-associated PD. Cerebrospinal fluid biomarkers did not prove helpful in differentiating asymptomatic LRRK2 mutation carriers from noncarriers. 15 June 2016
  • Neurology Postural instability and gait are associated with severity and prognosis of Parkinson diseaseConclusions: In contrast to PIGD, which consistently was associated with greater severity of nondopaminergic symptoms, there was no evidence of a benign effect of tremor. Our findings do not support the use of the TD subtype as a prognostic trait in PD. The results showed that severity of PIGD is a useful indicator of severity and prognosis in PD by itself. 14 June 2016
  • Parkinsonism & Related Disorders Volume 27 Validation of the UPDRS section IV for detection of motor fluctuations in Parkinson's diseaseResults: Sixty two PD patients were enrolled in the study. According to the raters' evaluations, 39 (62.9%) were classified as having motor fluctuations, while according to the UPDRS-IV 47 (75.8%) presented a motor fluctuation giving a sensitivity of 87.2% (95%CI 72.6-95.7) and a specificity of 43.5% (95%CI 23.2-65.5). 01 June 2016
  • American Journal of Epidemiology Trends in the Incidence of Parkinson Disease in the General Population The Rotterdam StudyAuthors investigated trends in the incidence of parkinsonism and Parkinson disease (PD) by comparing data from the first 2 subcohorts of the Rotterdam Study, a prospective, population-based cohort study (first subcohort: baseline 1990 with 10 years of follow-up; second subcohort, baseline 2000 with 10 years of follow-up). From the baseline years, authors observed differences in the second subcohort that were associated with a lower risk of PD for some but not all baseline risk factors. 01 June 2016
  • Neurology Next-generation profiling to identify the molecular etiology of Parkinson dementiaResults: Genes overexpressed in both disease states were involved with an immune response, whereas shared underexpressed genes functioned in signal transduction or as components of the cytoskeleton. Alternative splicing analysis produced a pattern of immune and RNA-processing disturbances. 01 June 2016
  • Journal of Parkinson's Disease Variation in Recent Onset Parkinson's Disease: Implications for Prodromal DetectionConclusions: Varying sensitivity levels, and age and phenotype selectivity, are found when different non-motor screening methods to detect prodromal PD are applied to an early clinical PD cohort. 26 May 2016
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