| 1. |
- Hagell, Peter
(author)
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Nursing and multidisciplinary interventions for Parkinson's disease : what is the evidence?
- 2007
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In: Parkinsonism & Related Disorders. - : Elsevier. - 1353-8020 .- 1873-5126. ; 13:Suppl 3, s. 501-508
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Journal article (peer-reviewed)abstract
- This paper reports the interim results of an ongoing systematic review of the available evidence for the effectiveness of nursing care for people with Parkinson's disease (PD). Five clinical and four health-economic evaluations suggest that the clinical and cost effectiveness of nursing care for PD remain inconclusive. This is in contrast to clinical experience and may be due to issues related to study designs, study interventions, and the outcome measures used. More studies are needed and may benefit from considering specific interventions evaluated using outcome measures that are valid and responsive representations of their expected outcomes.
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| 2. |
- Alafuzoff, Irina, et al.
(author)
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Staged pathology in Parkinson's disease
- 2014
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In: Parkinsonism & Related Disorders. - 1353-8020 .- 1873-5126. ; 20:Suppl. 1, s. S57-S61
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Journal article (peer-reviewed)abstract
- There has been a tremendous development since a regional progression of pathology in subjects with Lewy bodies (LB) was initially proposed 30 years ago. The entity of dementia with Lewy bodies has been acknowledged, the main protein constituent of LBs--aggregated α-synuclein (αS)--has been identified and a stepwise progression of the pathology has been reported. Implementation of the staging strategies published provides a common ground for handling a case with a suspected α-synucleinopathy. It is always important to state the staging strategy implemented while assessing a case, as the strategy applied might influence both the reported stage of LB pathology and, ultimately, the final diagnosis of the patient.
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| 3. |
- Hariz, Gun-Marie, et al.
(author)
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Gender distribution in surgery for Parkinson's disease.
- 2000
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In: Parkinsonism & Related Disorders. - 1353-8020 .- 1873-5126. ; 6:3, s. 155-157
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Journal article (peer-reviewed)abstract
- Parkinson's disease (PD) affects both women and men. The surgical treatment of this disease has experienced a worldwide increase since the mid-eighties. In order to document eventual differences in gender distribution of patients undergoing various stereotactic surgical procedures for PD, we reviewed scientific papers published during the last 14years.A literature search provided 145 clinical papers, published between January 1985 and February 1999, and dealing with pallidotomy, thalamotomy and deep brain stimulation procedures. These papers were scrutinised with respect to redundancies or other overlap of reported patients. The resulting numbers of patients were compiled according to gender, to surgical procedure, and to geographic area of origin of the publishing centers.In one third of the reviewed publications the gender of the patients was not specified. In the remaining papers, the overall sex distribution of patients who underwent surgery was 35% females and 65% males. These proportions between sexes were relatively consistent regardless of surgical procedure, and regardless of geographic origin of the publications.Male preponderance in patients undergoing surgery for PD cannot be explained by a corresponding difference in gender-prevalence of the disease. The criteria of selection, and patterns of referral, of patients for surgery, as well as the respective attitude of female and male patients toward surgery, may account for the uneven gender distribution in surgical PD patients.
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| 4. |
- Hariz, Marwan
(author)
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Deep brain stimulation : new techniques
- 2014
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In: Parkinsonism & Related Disorders. - : Elsevier. - 1353-8020 .- 1873-5126. ; 20:Suppl.1, s. S192-S196
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Journal article (peer-reviewed)abstract
- The technology of the hardware used in deep brain stimulation (DBS), and the mode of delivering the stimulation have not significantly evolved since the start of the modern era of DBS 25 years ago.However, new technology is now being developed along several avenues. New features of the implantable pulse generator (IPG) allow fractionation of the electric current into variable proportions between different contacts of the multi-polar lead. Another design consists in leads that allow selective current steering from directionally placed electrode contacts that would deliver the stimulation in a specific direction or even create a directional shaped electric field that would conform to the anatomy of the brain target aimed at, avoiding adjacent structures, and thus avoiding side effects.Closed loop adaptive stimulation technologies are being developed, allowing a tracking of the pathological local field potential of the brain target, and delivering automatically the stimulation to suppress the pathological activity as soon as it is detected and for as long as needed. This feature may contribute to a DBS therapy "on demand", instead of continuously.Finally, advances in imaging technology are providing "new" brain targets, and increasingly allowing DBS to be performed accurately while avoiding the risks of microelectrode recording.
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| 5. |
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| 6. |
- Albrecht, F., et al.
(author)
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Unraveling Parkinson's disease heterogeneity using subtypes based on multimodal data
- 2022
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In: Parkinsonism and Related Disorders. - : Elsevier BV. - 1353-8020 .- 1873-5126. ; 102, s. 19-29
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Journal article (peer-reviewed)abstract
- Background: Parkinson's disease (PD) is a clinically and neuroanatomically heterogeneous neurodegenerative disease characterized by different subtypes. To this date, no studies have used multimodal data that combines clinical, motor, cognitive and neuroimaging assessments to identify these subtypes, which may provide complementary, clinically relevant information. To address this limitation, we subtyped participants with mild-moderate PD based on a rich, multimodal dataset of clinical, cognitive, motor, and neuroimaging variables. Methods: Cross-sectional data from 95 PD participants from our randomized EXPANd (EXercise in PArkinson's disease and Neuroplasticity) controlled trial were included. Participants were subtyped using clinical, motor, and cognitive assessments as well as structural and resting-state MRI data. Subtyping was done by random forest clustering. We extracted information about the subtypes by inspecting their neuroimaging profiles and descriptive statistics. Results: Our multimodal subtyping analysis yielded three PD subtypes: a motor-cognitive subtype characterized by widespread alterations in brain structure and function as well as impairment in motor and cognitive abilities; a cognitive dominant subtype mainly impaired in cognitive function that showed frontoparietal structural and functional changes; and a motor dominant subtype impaired in motor variables without any brain alterations. Motor variables were most important for the subtyping, followed by gray matter volume in the right medial postcentral gyrus. Conclusions: Three distinct PD subtypes were identified in our multimodal dataset. The most important features to subtype PD participants were motor variables in addition to structural MRI in the sensorimotor region. These findings have the potential to improve our understanding of PD heterogeneity, which in turn can lead to personalized interventions and rehabilitation.
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| 7. |
- Bakhit, Yousuf, et al.
(author)
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Intrafamilial and interfamilial heterogeneity of PINK1-associated Parkinson's disease in Sudan
- 2023
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In: Parkinsonism & Related Disorders. - : Elsevier. - 1353-8020 .- 1873-5126. ; 111
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Journal article (peer-reviewed)abstract
- PINK1 is the second most predominant gene associated with autosomal recessive Parkinson's disease. Homo-zygous mutations in this gene are associated with an early onset of symptoms. Bradykinesia, tremors, and rigidity are common features, while dystonia, motor fluctuation, and non-motor symptoms occur in a lower percentage of cases and usually respond well to levodopa. We investigated 14 individuals with parkinsonism and eleven symptom-free siblings from three consanguineous Sudanese families, two of them multigenerational, using a custom gene panel screening 34 genes, 27 risk variants, and 8 candidate genes associated with parkinsonism. We found a known pathogenic nonsense PINK1 variant (NM_032409.3:c.1366C>T; p.(Gln456*)), a novel pathogenic single base duplication (NM_032409.3:c.1597dup; p.(Gln533Profs*29)), and another novel pathogenic insertion (NM_032409.3:c.1448_1449ins[1429_1443; TTGAG]; p.(Arg483Serfs*7)). All variants were homozygous and co -segregated in all affected family members. We also identified intrafamilial and interfamilial phenotypic het-erogeneity associated with PINK1 mutations in these Sudanese cases, possibly reflecting the nature of the Sudanese population that has a large effective population size, which suggests a higher possibility of novel findings in monogenic and polygenic diseases in Sudan.
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| 8. |
- Bech, Sara, et al.
(author)
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Amyloid-related biomarkers and axonal damage proteins in parkinsonian syndromes.
- 2012
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In: Parkinsonism & related disorders. - : Elsevier BV. - 1873-5126 .- 1353-8020. ; 18:1, s. 69-72
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Journal article (peer-reviewed)abstract
- Clinical differentiation between parkinsonian syndromes (PS) remains a challenge despite well-established clinical diagnostic criteria. Specific diagnostic biomarkers have yet to be identified, though in recent years, studies have been published on the aid of certain brain related proteins (BRP) in the diagnosing of PS. We investigated the levels of the light subunit of neurofilament triplet protein (NF-L), total tau and phosphorylated tau, amyloid-β(1-42), and the soluble α- and β-cleaved fragments of amyloid precursor proteins in a cohort of patients with various PS.
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| 9. |
- Blomstedt, Patric, et al.
(author)
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Acute severe depression induced by intraoperative stimulation of the Substatia Nigra : a case-report
- 2008
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In: Parkinsonism & Related Disorders. - : Elsevier. - 1353-8020 .- 1873-5126. ; 14:3, s. 253-256
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Journal article (other academic/artistic)abstract
- We present a 62 years old man with Parkinson's disease (PD) who underwent bilateral stimulation in the subthalamic nucleus (STN). During the intraoperative evaluation, stimulation through the lowest contact in the right STN area, induced an acute depressive state, during which the patient was crying and expressing that he did not want to live. The patient returned to his normal state of mood within seconds after the cessation of stimulation. Repeated blinded stimulations resulted in the same response. Immediate postoperative magnetic resonance imaging (MRI) revealed that the lowest contact of the right electrode was located in the substantia nigra.
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| 10. |
- Blomstedt, Patric, et al.
(author)
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Deep brain stimulation for movement disorders before DBS for movement disorders
- 2010
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In: Parkinsonism & Related Disorders. - : Elsevier BV. - 1353-8020 .- 1873-5126. ; 16:7, s. 429-433
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Journal article (peer-reviewed)abstract
- Deep brain stimulation (DBS) is an established surgical treatment for Parkinson's disease (PD), essential tremor and dystonia. It is generally acknowledged that the development of DBS as we know it today started with the publication of Benabid, Pollak et al in 1987 on thalamic DBS for tremor. This technique gained momentum in the mid-Nineties after that Pollak and Benabid introduced the subthalamic nucleus as a target in advanced PD. This paper reviews the gestational pre-natal era of deep brain stimulation, before 1987. The origin of DBS can be traced back to the practice of intra-operative electrical stimulation, used for target exploration prior to lesioning, during the early years of stereotactic functional neurosurgery. During the 60s, Sem-Jacobsen and others implanted externalised electrodes which were used for intermittent stimulation and evaluation during weeks or months, prior to subsequent ablation of thalamic and other basal ganglia targets. In the early 70s Bechtereva treated PD patients using "therapeutic electrical stimulation" through electrodes implanted for up to 1.5 years. In the late 70s and early 80s the term Deep Brain Stimulation was coined and few groups attempted treatment of Parkinson's disease, non-Parkinsonian tremor and dystonia with high-frequency stimulation using chronically implanted DBS systems. Cumbersome, un-sophisticated DBS hardware, together with the general decline of all surgery for PD following the introduction of levodopa, may have contributed to the lack of popularity of old-times DBS. It is to the credit of the Grenoble Group to have reinvented, modernised and expanded modern DBS in surgical treatment of movement disorders.
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