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  1. Article ; Online: The virtual house call: A 21st-century innovation in the care of patients with Parkinson disease.

    Shprecher, David R / Majersik, Jennifer J

    Neurology

    2017  Volume 89, Issue 11, Page(s) 1103–1104

    MeSH term(s) House Calls ; Humans ; Parkinson Disease
    Language English
    Publishing date 2017-08-16
    Publishing country United States
    Document type Editorial ; Comment
    ZDB-ID 207147-2
    ISSN 1526-632X ; 0028-3878
    ISSN (online) 1526-632X
    ISSN 0028-3878
    DOI 10.1212/WNL.0000000000004366
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Conjugal Synucleinopathies: A Clinicopathologic Study.

    Adler, Charles H / Halverson, Matthew / Zhang, Nan / Shill, Holly A / Driver-Dunckley, Erika / Mehta, Shyamal H / Atri, Alireza / Caviness, John N / Serrano, Geidy E / Shprecher, David R / Belden, Christine M / Sabbagh, Marwan N / Long, Kathy / Beach, Thomas G

    Movement disorders : official journal of the Movement Disorder Society

    2024  

    Abstract: Background: While preclinical studies have shown that alpha-synuclein can spread through cell-to-cell transmission whether it can be transmitted between humans is unknown.: Objectives: The aim was to assess the presence of a synucleinopathy in ... ...

    Abstract Background: While preclinical studies have shown that alpha-synuclein can spread through cell-to-cell transmission whether it can be transmitted between humans is unknown.
    Objectives: The aim was to assess the presence of a synucleinopathy in autopsied conjugal couples.
    Methods: Neuropathological findings in conjugal couples were categorized as Parkinson's disease (PD), dementia with Lewy bodies (DLB), Alzheimer's disease with Lewy bodies (ADLB), incidental Lewy body disease (ILBD), or no Lewy bodies.
    Results: Ninety conjugal couples were included; the mean age of death was 88.3 years; 32 couples had no Lewy bodies; 42 couples had 1 spouse with a synucleinopathy: 10 PD, 3 DLB, 13 ADLB, and 16 ILBD; 16 couples had both spouses with a synucleinopathy: in 4 couples both spouses had PD, 1 couple had PD and DLB, 4 couples had PD and ADLB, 2 couples had PD and ILBD, 1 couple had DLB and ADLB, in 3 couples both had ADLB, and 1 couple had ADLB and ILBD. No couples had both spouses with ILBD.
    Conclusions: This large series of 90 autopsied conjugal couples found 16 conjugal couples with synucleinopathies, suggesting transmission of synucleinopathy between spouses is unlikely. © 2024 International Parkinson and Movement Disorder Society.
    Language English
    Publishing date 2024-04-10
    Publishing country United States
    Document type Journal Article
    ZDB-ID 607633-6
    ISSN 1531-8257 ; 0885-3185
    ISSN (online) 1531-8257
    ISSN 0885-3185
    DOI 10.1002/mds.29783
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Parkinsonism Risk Factors in Salt Lake City, Utah: A Community-Based Study.

    Shprecher, David / Zhang, Nan / Halverson, Matthew / Savica, Rodolfo

    Brain sciences

    2019  Volume 9, Issue 3

    Abstract: Background: The prevalence of dream enactment behavior and other risk factors for a parkinsonian disorder is not well documented.: Methods: A survey on prevalence of parkinsonism risk factors was designed using two validated instruments (REM behavior ...

    Abstract Background: The prevalence of dream enactment behavior and other risk factors for a parkinsonian disorder is not well documented.
    Methods: A survey on prevalence of parkinsonism risk factors was designed using two validated instruments (REM behavior disorder single item question, bowel movement frequency for constipation) and three exploratory instruments (for hallucinations, cognitive and olfactory complaints.) It was sent by mail and email to patients aged 50 and over at two University of Utah community clinics in Salt Lake City. A total of 7888 unique patients were sent the survey, and 1607 responses were recorded (response rate 20%). Those whose age was missing (
    Results: Of the 1406 without personal diagnosis of neurodegenerative disease 62.7% were female, and median age was 63. Family history (FH) of Parkinson's disease was endorsed by 9%, constipation (defined as a bowel movement less than once per day) by 19%, mild cognitive complaints (MCI) 15.8%, dream enactment 13.7%, subjective hyposmia or anosmia 18.2%, and at least one potential psychotic symptom in 37.6%. Multivariable logistic regression showed male gender, mild cognitive complaints, hearing voices, and at least one potentially psychotic symptom to be significantly associated with dream enactment.
    Conclusions: This survey shows that dream enactment, a strong predictor of risk for synucleinopathy, is relatively common in the older population; because such individuals rarely come to medical attention of a sleep clinic, such survey research may be useful to identify and recruit at-risk individuals for trials aimed at preventing neurodegenerative disease.
    Language English
    Publishing date 2019-03-23
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2651993-8
    ISSN 2076-3425
    ISSN 2076-3425
    DOI 10.3390/brainsci9030071
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  4. Article ; Online: Longitudinal motor decline in dementia with Lewy bodies, Parkinson disease dementia, and Alzheimer's dementia in a community autopsy cohort.

    Choudhury, Parichita / Zhang, Nan / Adler, Charles H / Chen, Kewei / Belden, Christine / Driver-Dunckley, Erika / Mehta, Shyamal H / Shprecher, David R / Serrano, Geidy E / Shill, Holly A / Beach, Thomas G / Atri, Alireza

    Alzheimer's & dementia : the journal of the Alzheimer's Association

    2023  Volume 19, Issue 10, Page(s) 4377–4387

    Abstract: Introduction: We examined the progression of extrapyramidal symptoms and signs in autopsy-confirmed dementia with Lewy bodies (DLB), Parkinson's disease dementia (PDD), and Alzheimer's disease dementia (AD).: Methods: Longitudinal data were obtained ... ...

    Abstract Introduction: We examined the progression of extrapyramidal symptoms and signs in autopsy-confirmed dementia with Lewy bodies (DLB), Parkinson's disease dementia (PDD), and Alzheimer's disease dementia (AD).
    Methods: Longitudinal data were obtained from Arizona Study of Aging and Neurodegenerative Disease, with PDD (n = 98), AD (n = 47) and DLB (n = 48) further sub-grouped as with or without parkinsonism (DLB+ and DLB-). Within-group Unified Parkinson's Disease Rating Scale (UPDRS) -II and UPDRS-III trajectories were analyzed using non-linear mixed effects models.
    Results: In DLB, 65.6% had parkinsonism. Baseline UPDRS-II and III scores (off-stage) were highest (P < 0.001) for PDD (mean ± SD 14.3 ± 7.8 and 27.4 ± 16.3), followed by DLB+ (6.0 ± 8.8 and 17.2 ± 17.1), DLB- (1.1 ± 1.3 and 3.3 ± 5.5) and AD (3.2 ± 6.1 and 8.2 ± 13.6). Compared to PDD, the DLB+ group had faster UPDRS-III progression over 8-years (Cohen's-d range 0.98 to 2.79, P < 0.001), driven by gait (P < 0.001) and limb bradykinesia (P = 0.02) subscales.
    Discussion: Motor deficits progress faster in DLB+ than PDD, providing insights about expected changes in motor function.
    Highlights: Dementia with Lewy bodies has faster motor progression than Parkinson's disease dementia Linear and non-linear mixed modeling analysis of longitudinal data was utilized Findings have implications for clinical prognostication and trial design.
    MeSH term(s) Humans ; Alzheimer Disease ; Parkinson Disease/complications ; Dementia ; Lewy Body Disease ; Neurodegenerative Diseases ; Autopsy
    Language English
    Publishing date 2023-07-08
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 2211627-8
    ISSN 1552-5279 ; 1552-5260
    ISSN (online) 1552-5279
    ISSN 1552-5260
    DOI 10.1002/alz.13357
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  5. Article ; Online: Treatment-refractory Tourette Syndrome.

    Kious, Brent M / Jimenez-Shahed, Joohi / Shprecher, David R

    Progress in neuro-psychopharmacology & biological psychiatry

    2016  Volume 70, Page(s) 227–236

    Abstract: Tourette Syndrome (TS) is a complex neurodevelopmental condition marked by tics and frequently associated with psychiatric comorbidities. While most cases are mild and improve with age, some are treatment-refractory. Here, we review strategies for the ... ...

    Abstract Tourette Syndrome (TS) is a complex neurodevelopmental condition marked by tics and frequently associated with psychiatric comorbidities. While most cases are mild and improve with age, some are treatment-refractory. Here, we review strategies for the management of this population. We begin by examining the diagnosis of TS and routine management strategies. We then consider emerging treatments for refractory cases, including deep brain stimulation (DBS), electroconvulsive therapy (ECT), repetitive transcranial magnetic stimulation (rTMS), and novel pharmacological approaches such as new vesicular monoamine transporter type 2 inhibitors, cannabinoids, and anti-glutamatergic drugs.
    MeSH term(s) Animals ; Humans ; Tourette Syndrome/therapy
    Language English
    Publishing date 2016--03
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 781181-0
    ISSN 1878-4216 ; 0278-5846
    ISSN (online) 1878-4216
    ISSN 0278-5846
    DOI 10.1016/j.pnpbp.2016.02.003
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  6. Article ; Online: Parkinson disease: the enteric nervous system spills its guts.

    Shprecher, David R / Derkinderen, Pascal

    Neurology

    2012  Volume 78, Issue 9, Page(s) 683; author reply 683

    MeSH term(s) Animals ; Enteric Nervous System/physiopathology ; Gastrointestinal Tract/innervation ; Gastrointestinal Tract/physiopathology ; Humans ; Parkinson Disease/physiopathology
    Language English
    Publishing date 2012-02-28
    Publishing country United States
    Document type Comment ; Letter
    ZDB-ID 207147-2
    ISSN 1526-632X ; 0028-3878
    ISSN (online) 1526-632X
    ISSN 0028-3878
    DOI 10.1212/WNL.0b013e31824bd195
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  7. Article ; Online: Progressive Supranuclear Palsy and Statin Use.

    Bayram, Ece / Marras, Connie / Standaert, David G / Kluger, Benzi M / Bordelon, Yvette M / Shprecher, David R / Litvan, Irene

    Movement disorders : official journal of the Movement Disorder Society

    2020  Volume 35, Issue 7, Page(s) 1253–1257

    Abstract: Introduction: Statins were proposed to be neuroprotective; however, the effects are unknown in progressive supranuclear palsy (PSP), a pure tauopathy.: Methods: Data of 284 PSP cases and 284 age-matched, sex-matched, and race-matched controls were ... ...

    Abstract Introduction: Statins were proposed to be neuroprotective; however, the effects are unknown in progressive supranuclear palsy (PSP), a pure tauopathy.
    Methods: Data of 284 PSP cases and 284 age-matched, sex-matched, and race-matched controls were obtained from the environmental and genetic PSP (ENGENE-PSP) study. Cases were evaluated with the PSP Rating Scale, Unified Parkinson's Disease Rating Scale, Mattis Dementia Rating Scale, and Neuropsychiatric Inventory. Statin associations with PSP risk, onset age, and disease features were analyzed.
    Results: Univariate models showed lower PSP risk for type 1 statin users (simvastatin, lovastatin, pravastatin). After adjusting for confounding variables, statin use and lower PSP risk association remained only at a trend level. For PSP cases, type 1 statins were associated with 1-year older onset age; type 2 statins (atorvastatin, rosuvastatin) were associated with the lower PSP Rating Scale and Unified Parkinson's Disease Rating Scale.
    Conclusion: Statins may have inverse associations with PSP risk and motor impairment. Randomized prospective studies are required to confirm this effect. © 2020 International Parkinson and Movement Disorder Society.
    MeSH term(s) Case-Control Studies ; Humans ; Hydroxymethylglutaryl-CoA Reductase Inhibitors/therapeutic use ; Prospective Studies ; Supranuclear Palsy, Progressive/drug therapy ; Supranuclear Palsy, Progressive/epidemiology ; Tauopathies
    Chemical Substances Hydroxymethylglutaryl-CoA Reductase Inhibitors
    Language English
    Publishing date 2020-03-27
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 607633-6
    ISSN 1531-8257 ; 0885-3185
    ISSN (online) 1531-8257
    ISSN 0885-3185
    DOI 10.1002/mds.28038
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  8. Article ; Online: Advances in mechanistic understanding and treatment approaches to Tourette syndrome.

    Shprecher, David R / Kious, Brent M / Himle, Michael H

    Discovery medicine

    2015  Volume 20, Issue 111, Page(s) 295–301

    Abstract: Tourette syndrome (TS) is a childhood onset neurodevelopmental disorder characterized by semi-involuntary, repetitive movements and sounds (motor and phonic tics). Transient tics in childhood are common, and their persistence in TS may be due to failure ... ...

    Abstract Tourette syndrome (TS) is a childhood onset neurodevelopmental disorder characterized by semi-involuntary, repetitive movements and sounds (motor and phonic tics). Transient tics in childhood are common, and their persistence in TS may be due to failure of maturation of frontal-subcortical circuits mediated by genetic predisposition and environmental factors. Tic improvement by young adult years is common, but its mechanism and predictive factors are unclear. Though tics can often be managed with nonmedical therapies, pharmacotherapy is often used for refractory, severe, or injurious tics but is complicated by side effects and incomplete benefit. This review summarizes the current understanding of TS pathophysiology, current and future treatment options, and recommendations for future research.
    MeSH term(s) Female ; Humans ; Male ; Tourette Syndrome/pathology ; Tourette Syndrome/physiopathology ; Tourette Syndrome/therapy
    Language English
    Publishing date 2015-11-30
    Publishing country United States
    Document type Journal Article ; Review
    ISSN 1944-7930
    ISSN (online) 1944-7930
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Comorbid neurotrauma increases neurodegenerative-relevant cognitive, motor, and autonomic dysfunction in patients with REM sleep behavior disorder: A substudy of the North American Prodromal Synucleinopathy Consortium.

    Elliott, Jonathan E / Ligman, Brittany R / Bryant-Ekstrand, Mohini D / Keil, Allison T / Powers, Katherine / Olivo, Cosette / Neilson, Lee / Postuma, Ronald B / Pelletier, Amélie / Gagnon, Jean-François / Gan-Or, Ziv / Yu, Eric / Liu, Lang / St Louis, Erik K / Forsberg, Leah K / Fields, Julie A / Ross, Owen A / Huddleston, Daniel E / Bliwise, Donald L /
    Avidan, Alon Y / Howell, Michael J / Schenck, Carlos H / McLeland, Jennifer / Criswell, Susan R / Videnovic, Aleksandar / During, Emmanuel H / Miglis, Mitchell G / Shprecher, David R / Lee-Iannotti, Joyce K / Boeve, Bradley F / Ju, Yo-El S / Lim, Miranda M

    Sleep

    2024  

    Abstract: Study objectives: Rapid eye movement (REM) sleep behavior disorder (RBD) is strongly associated with phenoconversion to an overt synucleinopathy, e.g., Parkinson's disease (PD), Lewy Body Dementia (LBD), and related disorders. Comorbid traumatic brain ... ...

    Abstract Study objectives: Rapid eye movement (REM) sleep behavior disorder (RBD) is strongly associated with phenoconversion to an overt synucleinopathy, e.g., Parkinson's disease (PD), Lewy Body Dementia (LBD), and related disorders. Comorbid traumatic brain injury (TBI) and posttraumatic stress disorder (PTSD) - henceforth "neurotrauma" (NT) - increase the odds of RBD by ~2.5-fold and is associated with an increased rate of service-connected PD in Veterans. Thus, RBD and NT are both independently associated with PD; however, it is unclear how NT influences neurological function in patients with RBD.
    Methods: Participants ≥18 years with overnight-polysomnogram-confirmed RBD were enrolled between 8/2018 to 4/2021 through the North American Prodromal Synucleinopathy (NAPS) Consortium. Standardized assessments for RBD, TBI, and PTSD history, as well as cognitive, motor, sensory and autonomic function were completed. This cross-sectional analysis compared cases (n=24; RBD+NT) to controls (n=96; RBD), matched for age (~60 years), sex (15% female), and years of education (~15 years).
    Results: RBD+NT reported earlier RBD symptom onset (37.5±11.9 vs. 52.2±15.1 years of age) and a more severe RBD phenotype. Similarly, RBD+NT reported more severe anxiety and depression, greater frequency of hypertension, and significantly worse cognitive, motor, and autonomic function compared to RBD. No differences in olfaction or color vision were observed.
    Conclusion: This cross-sectional, matched case:control study shows individuals with RBD+NT have significantly worse neurological measures related to common features of an overt synucleinopathy. Confirmatory longitudinal studies are ongoing; however, these results suggest RBD+NT may be associated with more advanced neurological symptoms related to an evolving neurodegenerative process.
    Language English
    Publishing date 2024-01-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 424441-2
    ISSN 1550-9109 ; 0161-8105
    ISSN (online) 1550-9109
    ISSN 0161-8105
    DOI 10.1093/sleep/zsae007
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  10. Article ; Online: Non-REM sleep with hypertonia in Parkinsonian Spectrum Disorders: A pilot investigation.

    Levendowski, Daniel J / Walsh, Christine M / Boeve, Bradley F / Tsuang, Debby / Hamilton, Joanne M / Salat, David / Berka, Chris / Lee-Iannotti, Joyce K / Shprecher, David / Westbrook, Philip R / Mazeika, Gandis / Yack, Leslie / Payne, Sarah / Timm, Paul C / Neylan, Thomas C / St Louis, Erik K

    Sleep medicine

    2022  Volume 100, Page(s) 501–510

    Abstract: Introduction: From an ongoing multicenter effort toward differentiation of Parkinsonian spectrum disorders (PSD) from other types of neurodegenerative disorders, the sleep biomarker non-rapid-eye-movement sleep with hypertonia (NRH) emerged.: Methods!# ...

    Abstract Introduction: From an ongoing multicenter effort toward differentiation of Parkinsonian spectrum disorders (PSD) from other types of neurodegenerative disorders, the sleep biomarker non-rapid-eye-movement sleep with hypertonia (NRH) emerged.
    Methods: This study included in the PSD group patients with dementia with Lewy bodies/Parkinson disease dementia (DLB/PDD = 16), Parkinson disease (PD = 16), and progressive supranuclear palsy (PSP = 13). The non-PSD group included patients with Alzheimer disease dementia (AD = 24), mild cognitive impairment (MCI = 35), and a control group with normal cognition (CG = 61). In-home, multi-night Sleep Profiler studies were conducted in all participants. Automated algorithms detected NRH, characterized by elevated frontopolar electromyographic power. Between-group differences in NRH were evaluated using Logistic regression, Mann-Whitney U and Chi-squared tests.
    Results: NRH was greater in the PSD group compared to non-PSD (13.9 ± 11.0% vs. 3.1 ± 4.7%, P < 0.0001). The threshold NRH≥5% provided the optimal between-group differentiation (AUC = 0.78, P < 0.001). NRH was independently associated with the PSD group after controlling for age, sex, and SSRI/SNRI use (P < 0.0001). The frequencies of abnormal NRH by subgroup were PSP = 92%, DLB/PDD = 81%, PD = 56%, MCI = 26%, AD = 17%, and CG = 16%. The odds of abnormal NRH in each PSD subgroup ranged from 3.7 to 61.2 compared to each non-PSD subgroup. The night-to-night and test-retest intraclass correlations were excellent (0.78 and 0.84, both P < 0.0001).
    Conclusions: In this pilot study, NRH appeared to be a novel candidate sleep biomarker for PSD-related neurodegeneration. Future studies in larger cohorts are needed to confirm these findings, understand the etiology of NRH magnitude/duration, and determine whether it is an independent prodromal marker for specific neurodegenerative pathologies.
    MeSH term(s) Humans ; Lewy Body Disease ; Parkinson Disease/psychology ; Pilot Projects ; Dementia/complications ; Alzheimer Disease/complications ; Muscle Hypertonia/complications ; Biomarkers ; Sleep
    Chemical Substances Biomarkers
    Language English
    Publishing date 2022-10-04
    Publishing country Netherlands
    Document type Multicenter Study ; Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 2012041-2
    ISSN 1878-5506 ; 1389-9457
    ISSN (online) 1878-5506
    ISSN 1389-9457
    DOI 10.1016/j.sleep.2022.09.025
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