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  • 1
    In: Frontiers in Human Neuroscience, Frontiers Media SA, Vol. 16 ( 2022-6-21)
    Abstract: In Parkinson's disease (PD), the side of motor symptoms onset may influence disease progression, with a faster motor symptom progression in patients with left side lateralization. Moreover, worse neuropsychological outcomes after subthalamic nucleus deep brain stimulation (STN-DBS) have been described in patients with predominantly left-sided motor symptoms. The objective of this study was to evaluate if the body side of motor symptoms onset may predict motor outcome of bilateral STN-DBS. Methods This retrospective study included all consecutive PD patients treated with bilateral STN-DBS at Grenoble University Hospital from 1993 to 2015. Demographic, clinical and neuroimaging data were collected before (baseline condition) and 1 year after surgery (follow-up condition). The predictive factors of motor outcome at one-year follow-up, measured by the percentage change in the MDS-UPDRS-III score, were evaluated through univariate and multivariate linear regression analysis. Results A total of 233 patients were included with one-year follow-up after surgery [143 males (61.40%); 121 (51.90 %) right body onset; 112 (48.10%) left body onset; mean age at surgery, 55.31 ± 8.44 years; mean disease duration, 11.61 ± 3.87]. Multivariate linear regression analysis showed that the left side of motor symptoms onset did not predict motor outcome (β = 0.093, 95% CI = −1.967 to 11.497, p = 0.164). Conclusions In this retrospective study, the body side of motor symptoms onset did not significantly influence the one-year motor outcome in a large cohort of PD patients treated with bilateral STN-DBS.
    Type of Medium: Online Resource
    ISSN: 1662-5161
    Language: Unknown
    Publisher: Frontiers Media SA
    Publication Date: 2022
    detail.hit.zdb_id: 2425477-0
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  • 2
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2023
    In:  Neurological Sciences Vol. 44, No. 9 ( 2023-09), p. 3341-3343
    In: Neurological Sciences, Springer Science and Business Media LLC, Vol. 44, No. 9 ( 2023-09), p. 3341-3343
    Type of Medium: Online Resource
    ISSN: 1590-1874 , 1590-3478
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2023
    detail.hit.zdb_id: 1481772-X
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  • 3
    In: Journal of Parkinson's Disease, IOS Press, Vol. 12, No. 5 ( 2022-07-08), p. 1665-1676
    Abstract: Background: Previous studies described a parkinsonian personality characterized as rigid, introverted, and cautious; however, little is known about personality traits in de novo Parkinson’s disease (PD) patients and their relationships with motor and neuropsychiatric symptoms. Objective: To investigate personality in de novo PD and explore its relationship with PD symptoms. Methods: Using Cloninger’s biosocial model, we assessed personality in 193 de novo PD patients. Motor and non-motor symptoms were measured using several validated scales. Cluster analysis was conducted to investigate the interrelationship of personality traits, motor, and non-motor symptoms. Results: PD patients showed low novelty seeking, high harm avoidance, and normal reward dependence and persistence scores. Harm avoidance was positively correlated with the severity of depression, anxiety, and apathy (rs = [0.435, 0.676], p  〈  0.001) and negatively correlated with quality of life (rs = –0.492, p  〈  0.001). Novelty seeking, reward dependence, and persistence were negatively correlated with apathy (rs = [–0.274, –0.375], p  〈  0.001). Classification of patients according to personality and PD symptoms revealed 3 distinct clusters: i) neuropsychiatric phenotype (with high harm avoidance and low novelty seeking, hypodopaminergic neuropsychiatric symptoms and higher impulsivity), ii) motor phenotype (with low novelty seeking and higher motor severity), iii) benign phenotype (with low harm avoidance and high novelty seeking, reward dependence, and persistence traits clustered with lower symptoms severity and low impulsivity). Conclusion: Personality in early PD patients allows us to recognize 3 patients’ phenotypes. Identification of such subgroups may help to better understand their natural history. Their longitudinal follow-up will allow confirming whether some personality features might influence disease evolution and treatment.
    Type of Medium: Online Resource
    ISSN: 1877-7171 , 1877-718X
    Language: Unknown
    Publisher: IOS Press
    Publication Date: 2022
    detail.hit.zdb_id: 2599550-9
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  • 4
    In: European Journal of Neurology, Wiley, Vol. 29, No. 9 ( 2022-09), p. 2645-2653
    Abstract: Studies on long‐term nonmotor outcomes of subthalamic nucleus stimulation in Parkinson disease (PD) are scarce. This study reports on very long‐term non‐motor and motor outcomes in one of the largest cohorts of people with advanced PD, treated for 〉 10 years with subthalamic nucleus stimulation. The main outcome was to document the evolution of independence in activities of daily living. The secondary outcomes were to measure the change in quality of life, as well as non‐motor and motor outcomes. Methods Patients were studied preoperatively, at 1 year, and beyond 10 years after subthalamic stimulation with an established protocol including motor, non‐motor, and neuropsychological assessments. Results Eighty‐five people with PD were included. Independence scores in the off‐medication condition (measured with the Schwab & England Activities of Daily Living Scale) as well as quality of life (measured with the Parkinson's Disease Questionnaire [PDQ]‐37) remained improved at longest follow‐up compared to preoperatively (respectively, p   〈  0.001, p  = 0.015). Cognitive scores, measured with the Mattis Dementia Rating Scale, significantly worsened compared to before and 1 year after surgery ( p   〈  0.001), without significant change in depression, measured with the Beck Depression Inventory. Motor fluctuations, dyskinesias, and off dystonia remained improved at longest follow‐up ( p   〈  0.001), with a significant reduction in dopaminergic treatment (45%, p   〈  0.001). Conclusions This study highlights the long‐term improvement of subthalamic stimulation on independence and quality of life, despite the progression of disease and the occurrence of levodopa‐resistant symptoms.
    Type of Medium: Online Resource
    ISSN: 1351-5101 , 1468-1331
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2020241-6
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  • 5
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2022
    In:  Neurological Sciences Vol. 43, No. 6 ( 2022-06), p. 3641-3647
    In: Neurological Sciences, Springer Science and Business Media LLC, Vol. 43, No. 6 ( 2022-06), p. 3641-3647
    Type of Medium: Online Resource
    ISSN: 1590-1874 , 1590-3478
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2022
    detail.hit.zdb_id: 1481772-X
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  • 6
    In: Movement Disorders Clinical Practice, Wiley, Vol. 5, No. 3 ( 2018-05), p. 265-272
    Abstract: Non‐motor fluctuations represent a main source of disability in Parkinson's disease (PD). Among them, neuropsychiatric fluctuations are the most frequent and are often under‐recognized by patients and physicians, partly because specific tools for assessment of neuropsychiatric fluctuations are lacking. Objective To develop a scale for detecting and evaluating the presence and the severity of neuropsychological symptoms during the ON and OFF phases of non‐motor fluctuations. Methods Neuropsychiatric symptoms reported by PD patients in the OFF‐ and the ON‐medication conditions were collected using different neuropsychiatric scales (BDI‐II, BAI, Young, VAS, etc.). Subsequently, tree phases of a pilot study was performed for cognitive pretesting, identification of ambiguous or redundant items (item reduction), and to obtain preliminary data of acceptability of the new scale. In all the three phases, the scale was applied in both the OFF and ON condition during a levodopa challenge. Results Twenty items were selected for the final version of the neuropsychiatric fluctuation scale (NFS): ten items measured the ON neuropsychological symptoms and ten items the OFF neuropsychological manifestations. Each item rated from 0‐3, providing respective subscores from 0 to 30. Conclusions Once validated, our NFS can be used to identify and quantify neuropsychiatric fluctuations during motor fluctuations. The main novelty is that it could be used in acute settings. As such, the NFS can assess the neuropsychiatric state of the patient at the time of examination. The next step will be to validate the NFS to be used in current practice.
    Type of Medium: Online Resource
    ISSN: 2330-1619 , 2330-1619
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2018
    detail.hit.zdb_id: 2772809-2
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  • 7
    In: npj Parkinson's Disease, Springer Science and Business Media LLC, Vol. 8, No. 1 ( 2022-09-24)
    Abstract: In this retrospective study, we longitudinally analyzed axial impairment and falls in people with Parkinson’s disease (PD) and subthalamic nucleus deep brain stimulation (STN-DBS). Axial scores and falling frequency were examined at baseline, and 1, 10, and 15 years after surgery. Preoperative demographic and clinical data, including PD duration and severity, phenotype, motor and cognitive scales, medications, and vascular changes on neuroimaging were examined as possible risk factors through Kaplan–Meier and Cox regression analyses. Of 302 individuals examined before and at 1 year after surgery, 102 and 57 were available also at 10 and 15 years of follow-up, respectively. Axial scores were similar at baseline and at 1 year but worsened at 10 and 15 years. The prevalence rate of frequent fallers progressively increased from baseline to 15 years. Preoperative axial scores, frontal dysfunction and age at PD onset were risk factors for axial impairment progression after surgery. Axial scores, akinetic/rigid phenotype, age at disease onset and disease duration at surgery predicted frequent falls. Overall, axial signs progressively worsened over the long-term period following STN-DBS, likely related to the progression of PD, especially in a subgroup of subjects with specific risk factors.
    Type of Medium: Online Resource
    ISSN: 2373-8057
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2022
    detail.hit.zdb_id: 2819218-7
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  • 8
    In: Frontiers in Neurology, Frontiers Media SA, Vol. 14 ( 2023-8-17)
    Abstract: Neuropsychiatric fluctuations (NpsyF) are frequent and disabling in people with Parkinson’s disease (PD). In OFF-medication, NpsyF entail minus neuropsychiatric symptoms (NPS) like anxiety, apathy, sadness, and fatigue. In ON-medication, NpsyF consist in plus NPS, such as high mood, hypomania, and hyperactivity. Accurate identification of these NpsyF is essential to optimize the overall PD management. Due to lack of punctual scales, the neuropsychiatric fluctuation scale (NFS) has been recently designed to assess NpsyF in real time. The NFS comprises 20 items with two subscores for plus and minus NPS, and a total score. Objective To evaluate the psychometric properties of the NFS in PD. Methods PD patients with motor fluctuations and healthy controls (HC) were assessed. In PD patients, the NFS was administrated in both the ON-and OFF-medication conditions, together with the movement disorders society-unified Parkinson disease rating scale parts I–IV. Depression (Beck depression scale II), apathy (Starkstein apathy scale) and non-motor fluctuations items of the Ardouin scale of behaviour in PD (ASBPD OFF and ON items) were also assessed. NFS internal structure was evaluated with principal component analysis consistency (PCA) in both medication conditions in PD patients and before emotional induction in HC. NFS internal consistency was assessed using Cronbach’s alpha coefficient. NFS convergent and divergent validity was measured through correlations with BDI-II, Starktein, and ASBPD OFF and ON non motor items. Specificity was assessed comparing NFS global score between the HC and PD populations. Sensitivity was evaluated with t-student test comparing the ON-and the OFF-medication conditions for NFS global score and for minus and plus subscores. Results In total, 101 consecutive PD patients and 181 HC were included. In PD patients and HC, PCA highlighted one component that explained 32–35 and 42% of the variance, respectively. Internal consistency was good for both the NFS -plus (alpha =0.88) and NFS -minus items (alpha =0.8). The NFS showed a good specifity for PD ( p  & lt; 0.0001) and a good sensitivity to the medication condition ( p  & lt; 0.0001). Conclusion The satisfactory properties of the NFS support its use to assess acute neuropsychiatric fluctuations in PD patients, adding to available tools.
    Type of Medium: Online Resource
    ISSN: 1664-2295
    Language: Unknown
    Publisher: Frontiers Media SA
    Publication Date: 2023
    detail.hit.zdb_id: 2564214-5
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  • 9
    In: Annals of Neurology, Wiley, Vol. 89, No. 3 ( 2021-03), p. 587-597
    Abstract: This study was undertaken to identify preoperative predictive factors of long‐term motor outcome in a large cohort of consecutive Parkinson disease (PD) patients with bilateral subthalamic nucleus deep brain stimulation (STN‐DBS). Methods All consecutive PD patients who underwent bilateral STN‐DBS at the Grenoble University Hospital (France) from 1993 to 2015 were evaluated before surgery, at 1 year (short‐term), and in the long term after surgery. All available demographic variables, neuroimaging data, and clinical characteristics were collected. Preoperative predictors of long‐term motor outcome were investigated by performing survival and univariate/multivariate Cox regression analyses. Loss of motor benefit from stimulation in the long term was defined as a reduction of less than 25% in the Movement Disorder Society–sponsored revision of the Unified Parkinson's Disease Rating Scale (MDS‐UPDRS) part III scores compared to the baseline off‐medication scores. As a secondary objective, potential predictors of short‐term motor outcome after STN‐DBS were assessed by performing univariate and multivariate linear regression analyses. Results In the long‐term analyses (mean follow‐up = 8.4 ± 6.26 years, median = 10 years, range = 1–17 years), 138 patients were included. Preoperative higher frontal score and off‐medication MDS‐UPDRS part III scores predicted a better long‐term motor response to stimulation, whereas the presence of vascular changes on neuroimaging predicted a worse motor outcome. In 357 patients with available 1‐year follow‐up, preoperative levodopa response, tremor dominant phenotype, baseline frontal score, and off‐medication MDS‐UPDRS part III scores predicted the short‐term motor outcome. Interpretation Frontal lobe dysfunction, disease severity in the off‐medication condition, and the presence of vascular changes on neuroimaging represent the main preoperative clinical predictors of long‐term motor STN‐DBS effects. ANN NEUROL 2021;89:587–597
    Type of Medium: Online Resource
    ISSN: 0364-5134 , 1531-8249
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 2037912-2
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  • 10
    In: Journal of Neurology, Neurosurgery & Psychiatry, BMJ, Vol. 89, No. 8 ( 2018-08), p. 836-843
    Abstract: Reports on behavioural outcomes after subthalamic nucleus deep brain stimulation in Parkinson’s disease are controversial and limited to short-term data. Long-term observation in a large cohort allows a better counselling and management. Methods To determine whether a long-term treatment with subthalamic stimulation induces or reduces impulse control behaviours, neuropsychiatric fluctuations and apathy, 69 patients treated with subthalamic stimulation are prospectively and retrospectively assessed using Ardouin Scale of Behavior in Parkinson’s Disease before and after 3–10 years of stimulation. Results At a mean follow-up of 6 years, all impulse control disorders and dopaminergic addiction were significantly decreased, apart from eating behaviour and hypersexuality. Neuropsychiatric fluctuations also significantly improved (ON euphoria: 38% of the patients before surgery and 1% after surgery, P 〈 0.01; OFF dysphoria: 39% of the patients before surgery and 10% after surgery, P 〈 0.01). However, apathy increased (25% of the patients after surgery and 3% before, P 〈 0.01). With the retrospective analysis, several transient episodes of depression, apathy, anxiety and impulse control disorders occurred. Conclusions Bilateral subthalamic nucleus stimulation was overall very effective in improving impulse control disorders and neuropsychiatric fluctuations in parkinsonian patients in the long term despite a counteracting frequent apathy. Transient episodes of impulse control disorders still occurred within the follow-up. These findings recommend a close follow-up in parkinsonian patients presenting with neuropsychiatric symptoms before deep brain stimulation surgery. Clinical trial registration NCT01705418;Post-results.
    Type of Medium: Online Resource
    ISSN: 0022-3050 , 1468-330X
    RVK:
    Language: English
    Publisher: BMJ
    Publication Date: 2018
    detail.hit.zdb_id: 1480429-3
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