Body side of motor symptom onset in Parkinson's disease is associated with memory performance

2006 ◽  
Vol 12 (5) ◽  
pp. 736-740 ◽  
Author(s):  
M.M. AMICK ◽  
J. GRACE ◽  
K.L. CHOU
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Symptom Onset ◽  
Verbal Memory ◽  
Visual Memory ◽  
Right Hemisphere ◽  
Verbal Learning ◽  
Motor Symptom ◽  
Hemispheric Dominance ◽  
Body Side

The relation of body side of motor symptom onset in Parkinson's disease (PD) to memory measures associated with hemispheric dominance was examined. Fourteen patients with right body side motor symptom onset (RPD, inferred left hemisphere dysfunction) and 16 patients with left side onset (LPD, right hemisphere dysfunction) were administered measures of verbal (Hopkins Verbal Learning Test-Revised) and visual memory (Brief Visual Memory Test-Revised), that require similar task demands and are associated with left or right hemisphere dominance, respectively. The LPD group demonstrated poorer visual than verbal memory, both within group and in comparison to the RPD group. By contrast, the RPD group showed poorer verbal than visual memory within group. These findings suggest that side of motor symptom onset is associated with asymmetrical memory dysfunction (JINS, 2006, 12, 736–740.)

scholarly journals A.01 Parkinson’s disease prognosis by early motor subtypes

2018 ◽  
Vol 45 (s2) ◽  
pp. S9-S9
Author(s):  
N Hey ◽  
ML Rajput ◽  
AH Rajput ◽  
A Rajput
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Symptom Onset ◽  
Primary Outcome ◽  
Disease Duration ◽  
Motor Symptom ◽  
Future Studies ◽  
Disease Prognosis ◽  
Significant Difference

Background: Studies of autopsy-confirmed cases suggest that Parkinson’s disease (PD) prognosis can be predicted using motor symptom severity at first visit. We evaluated the association between motor symptom subtype at first visit and severity at eight years disease duration among clinically-diagnosed cases at the Saskatchewan Movement Disorder Program. Methods: Retrospective data review identified 374 patients with first visit within three years of symptom onset, a clinical diagnosis of idiopathic PD, and a follow-up visit eight years after symptom onset. Subtypes were grouped as tremor-dominant (TD) if tremor was greater than rigidity and bradykinesia, akinetic-rigid (AR) if rigidity or bradykinesia was greater than tremor, and mixed (MX) if patient was neither TD nor AR based on assessment of all four limbs. Primary outcome was disease severity as measured by Hoehn & Yahr score at eight years after symptom onset. Results: The most common subtype was AR (n=164) followed by MX (n=156). TD was least common (n=54). There was no significant difference between subtypes in H&Y scores at eight years disease duration. Conclusions: These findings suggest that early PD prognosis cannot be predicted based on motor symptoms in all four limbs at first visit. Earlier studies had longer follow-up and future studies will examine progression at longer periods of disease duration.

scholarly journals Estimation of Cognitive Performance Based on Premorbid Intelligence in Parkinson’s Disease

2020 ◽  
Vol 10 (4) ◽  
pp. 1717-1725
Author(s):  
Rocio Del Pino ◽  
Maria Díez-Cirarda ◽  
Javier Peña ◽  
Naroa Ibarretxe-Bilbao ◽  
Natalia Ojeda
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Executive Functions ◽  
Cognitive Performance ◽  
Verbal Memory ◽  
Visual Memory ◽  
Cognitive Domain ◽  
Semantic Fluency ◽  
Pi Method ◽  
Premorbid Intelligence

Background: The estimation of premorbid intelligence (PI) is needed for an accurate diagnosis. Objective: This study aimed to estimate the cognitive performance taking into account the PI in Parkinson’s disease (PD) compared to healthy controls (HC); and to analyze the discrepancies between the current and the predicted cognitive performance based on the PI. Method: Semantic fluency, verbal and visual memory, and executive functions were assessed in 39 PD and 162 HC. A linear regression model was used to analyze the discrepancies between the predicted cognitive performance and the current raw scores through PI variables (Word Accentuation Test (WAT), Pseudo-Words (PW) Reading subtest from PROLEC-R, age, and years of education). ROC analyses were performed to assess their diagnostic properties. Results: Significant differences were found in the raw cognitive scores between patients and HC [semantic fluency (t = 6.07; p < 0.001), verbal memory (t = 6.63; p < 0.001), and executive functions (t = 2.57; p = 0.013), and in visual memory (t = 1.97; p = 0.055 marginally significant)]. Compared to HC, PD patients presented higher discrepancies between the predicted cognitive performance and the raw scores in semantic fluency, verbal memory, visual memory, executive functions (AUC = 0.78, 0.78; 0.64, 0.61, respectively). Conclusion: The magnitude of the discrepancies scores between the current and the predicted cognitive performance based on PI indicates the presence of cognitive decline in the specific cognitive domain in PD patients. This study underlines the usefulness of premorbid measures and variables, such as WAT, PW, age, and years of education, to more accurately estimate the cognitive performance in PD.

Early effect of thalamotomy on cognitive function in patients with Parkinson’s disease

2018 ◽  
Vol 14 (1) ◽  
Author(s):  
Edward J. Gorzelańczyk ◽  
Dorota Ackermann-Szulgit ◽  
Marek Kunc ◽  
Marek Harat ◽  
Piotr Walecki
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Cognitive Function ◽  
Verbal Memory ◽  
Spatial Working Memory ◽  
Verbal Learning ◽  
Control Group ◽  
Healthy Individuals ◽  
Early Effect ◽  
Visual Spatial

Abstract Thalamotomy is a neurosurgical procedure used in the treatment of advanced Parkinson’s disease (PD). The aim of our research is to evaluate the early impact of a lesion in the ventrointermedial nucleus (VIM) of the thalamus on cognitive and motor function in people with PD. Sixty patients who qualified for right- or left-sided VIM thalamotomy were involved in the study. The cognitive and motor functions of each patient were assessed both prior to and following the surgical procedure. Twenty-nine PD patients without ablative treatment were qualified for the comparison group, and 57 neurologically healthy individuals were assigned to the control group. The following tests were carried out: Mini Mental State Examination, Benton Visual Retention Test, Stroop Color and Word Test, Trail Making Test A&B, and Rey Auditory Verbal Learning Test. Statistically significant differences were found in reaction time, visual-spatial working memory, auditory-verbal memory, and overall level of cognitive function when comparing the results of tests carried out before and after thalamotomy and when comparing patients who had undergone surgery with untreated or healthy individuals. In patients with right-sided and left-sided thalamotomy differences were also found in the mean number of perseverative errors and recalled words.

scholarly journals Motor Symptom Lateralization Influences Cortico-Striatal Functional Connectivity in Parkinson's Disease

2021 ◽  
Vol 12 ◽  
Author(s):  
Wen Su ◽  
Kai Li ◽  
Chun-Mei Li ◽  
Xin-Xin Ma ◽  
Hong Zhao ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Functional Connectivity ◽  
Orbitofrontal Cortex ◽  
Resting State ◽  
Right Hemisphere ◽  
Motor Symptom ◽  
Control Group ◽  
Significant Difference ◽  
The Right

Objective: The striatum is unevenly impaired bilaterally in Parkinson's disease (PD). Because the striatum plays a key role in cortico-striatal circuits, we assume that lateralization affects cortico-striatal functional connectivity in PD. The present study sought to evaluate the effect of lateralization on various cortico-striatal circuits through resting-state functional magnetic resonance imaging (fMRI).Methods: Thirty left-onset Parkinson's disease (LPD) patients, 27 right-onset Parkinson's disease (RPD) patients, and 32 normal controls with satisfactory data were recruited. Their demographic, clinical, and neuropsychological information was collected. Resting-state fMRI was performed, and functional connectivity changes of seven subdivisions of the striatum were explored in the two PD groups. In addition, the associations between altered functional connectivity and various clinical and neuropsychological characteristics were analyzed by Pearson's or Spearman's correlation.Results: Directly comparing the LPD and RPD patients demonstrated that the LPD patients had lower FC between the left dorsal rostral putamen and the left orbitofrontal cortex than the RPD patients. In addition, the LPD patients showed aberrant functional connectivity involving several striatal subdivisions in the right hemisphere. The right dorsal caudate, ventral rostral putamen, and superior ventral striatum had decreased functional connectivity with the cerebellum and parietal and occipital lobes relative to the normal control group. The comparison between RPD patients and the controls did not obtain significant difference in functional connectivity. The functional connectivity between the left dorsal rostral putamen and the left orbitofrontal cortex was associated with contralateral motor symptom severity in PD patients.Conclusions: Our findings provide new insights into the distinct characteristics of cortico-striatal circuits in LPD and RPD patients. Lateralization of motor symptoms is associated with lateralized striatal functional connectivity.

Prevalence of headache in patients with Parkinson’s disease and its association with the side of motor symptom onset

2013 ◽  
Vol 35 (4) ◽  
pp. 595-600 ◽  
Author(s):  
Jean Costa Nunes ◽  
E. N. Costa Bergamaschi ◽  
F. C. Freitas ◽  
A. P. Diaz ◽  
L. P. Queiroz ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Symptom Onset ◽  
Motor Symptom

Mood, side of motor symptom onset and pain complaints in Parkinson's disease

2010 ◽  
Vol 25 (5) ◽  
pp. 519-524 ◽  
Author(s):  
Patrick McNamara ◽  
Karina Stavitsky ◽  
Erica Harris ◽  
Orsolya Szent-Imrey ◽  
Raymon Durso
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Symptom Onset ◽  
Motor Symptom

scholarly journals Glucocerebrosidase Activity is Reduced in Cryopreserved Parkinson’s Disease Patient Monocytes and Inversely Correlates with Motor Severity

2021 ◽  
pp. 1-9
Author(s):  
Laura P. Hughes ◽  
Marilia M.M. Pereira ◽  
Deborah A. Hammond ◽  
John B. Kwok ◽  
Glenda M. Halliday ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Peripheral Blood ◽  
Mononuclear Cells ◽  
Rating Scale ◽  
Disease Patient ◽  
Motor Symptom ◽  
Blood Monocytes ◽  
Peripheral Blood Monocytes ◽  
Classical Monocytes

Background: Reduced activity of lysosomal glucocerebrosidase is found in brain tissue from Parkinson’s disease patients. Glucocerebrosidase is also highly expressed in peripheral blood monocytes where its activity is decreased in Parkinson’s disease patients, even in the absence of GBA mutation. Objective: To measure glucocerebrosidase activity in cryopreserved peripheral blood monocytes from 30 Parkinson’s disease patients and 30 matched controls and identify any clinical correlation with disease severity. Methods: Flow cytometry was used to measure lysosomal glucocerebrosidase activity in total, classical, intermediate, and non-classical monocytes. All participants underwent neurological examination and motor severity was assessed by the Movement Disorders Society Unified Parkinson’s Disease Rating Scale. Results: Glucocerebrosidase activity was significantly reduced in the total and classical monocyte populations from the Parkinson’s disease patients compared to controls. GCase activity in classical monocytes was inversely correlated to motor symptom severity. Conclusion: Significant differences in monocyte glucocerebrosidase activity can be detected in Parkinson’s disease patients using cryopreserved mononuclear cells and monocyte GCase activity correlated with motor features of disease. Being able to use cryopreserved cells will facilitate the larger multi-site trials needed to validate monocyte GCase activity as a Parkinson’s disease biomarker.

scholarly journals Cognitive training interventions for dementia and mild cognitive impairment in Parkinson’s disease - A cochrane review summary with commentary

2021 ◽  
pp. 1-3
Author(s):  
Tobias Loetscher
Keyword(s):  
Quality Of Life ◽  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Cognitive Training ◽  
Verbal Memory ◽  
Cognitive Impairments ◽  
Cochrane Review ◽  
Cognitive Domains ◽  
Training Interventions

BACKGROUND: The majority of people living with Parkinson’s disease will develop impairments in cognition. These impairments are associated with a reduced quality of life. OBJECTIVE: The Cochrane Review aimed to investigate whether cognitive training improves cognition in people with Parkinson’s disease and mild cognitive impairments or dementia. METHODS: A Cochrane Review by Orgeta et al. was summarized with comments. RESULTS: The review included seven studies with a total of 225 participants. There was no evidence for improvements in global cognition when cognitive training was compared to control conditions. Observed improvements in attention and verbal memory measures after cognitive training could not be confirmed in a subsequent sensitivity analysis. There was no evidence for benefits in other cognitive domains or quality of life measures. The certainty of the evidence was low for all comparisons. CONCLUSIONS: The effectiveness of cognitive training for people with Parkinson’s disease and cognitive impairments remains inconclusive. There is a pressing need for adequately powered trials with higher methodological quality.

scholarly journals The TOMM40 ‘523’ polymorphism in disease risk and age of symptom onset in two independent cohorts of Parkinson’s disease

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Megan C. Bakeberg ◽  
Madison E. Hoes ◽  
Anastazja M. Gorecki ◽  
Frances Theunissen ◽  
Abigail L. Pfaff ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Symptom Onset ◽  
Disease Risk ◽  
Age Of Onset ◽  
Sequencing Analysis ◽  
Age Related ◽  
Australian Cohort ◽  
Progression Markers ◽  
Age Related Cognitive Decline

AbstractAbnormal mitochondrial function is a key process in the pathogenesis of Parkinson’s disease (PD). The central pore-forming protein TOM40 of the mitochondria is encoded by the translocase of outer mitochondrial membrane 40 homologue gene (TOMM40). The highly variant ‘523’ poly-T repeat is associated with age-related cognitive decline and age of onset in Alzheimer’s disease, but whether it plays a role in modifying the risk or clinical course of PD it yet to be elucidated. The TOMM40 ‘523’ allele length was determined in 634 people with PD and 422 healthy controls from an Australian cohort and the Parkinson’s Progression Markers Initiative (PPMI) cohort, using polymerase chain reaction or whole genome sequencing analysis. Genotype and allele frequencies of TOMM40 ‘523’ and APOE ε did not differ significantly between the cohorts. Analyses revealed TOMM40 ‘523’ allele groups were not associated with disease risk, while considering APOE ε genotype. Regression analyses revealed the TOMM40 S/S genotype was associated with a significantly later age of symptom onset in the PPMI PD cohort, but not after correction for covariates, or in the Australian cohort. Whilst variation in the TOMM40 ‘523’ polymorphism was not associated with PD risk, the possibility that it may be a modifying factor for age of symptom onset warrants further investigation in other PD populations.

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