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Fadil R, Huether AXA, Sadeghian F, Verma AK, Blaber AP, Lou JS, Tavakolian K. The Effect of Skeletal Muscle-Pump on Blood Pressure and Postural Control in Parkinson's Disease. Cardiovasc Eng Technol 2023; 14:755-773. [PMID: 37749359 DOI: 10.1007/s13239-023-00685-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 09/06/2023] [Indexed: 09/27/2023]
Abstract
PURPOSE Activation of the calf (gastrocnemius and soleus) and tibialis anterior muscles play an important role in blood pressure regulation (via muscle-pump mechanism) and postural control. Parkinson's disease is associated with calf (and tibialis anterior muscles weakness and stiffness, which contribute to postural instability and associated falls. In this work, we studied the role of the medial and lateral gastrocnemius, tibialis anterior, and soleus muscle contractions in maintaining blood pressure and postural stability in Parkinson's patients and healthy controls during standing. In addition, we investigated whether the activation of the calf and tibialis anterior muscles is baroreflex dependent or postural-mediated. METHODS We recorded electrocardiogram, blood pressure, center of pressure as a measure of postural sway, and muscle activity from the medial and lateral gastrocnemius, tibialis anterior, and soleus muscles from twenty-six Parkinson's patients and eighteen sex and age-matched healthy controls during standing and with eyes open. The interaction and bidirectional causalities between the cardiovascular, musculoskeletal, and postural variables were studied using wavelet transform coherence and convergent cross-mapping techniques, respectively. RESULTS Parkinson's patients experienced a higher postural sway and demonstrated mechanical muscle-pump dysfunction of all individual leg muscles, all of which contribute to postural instability. Moreover, our results showed that coupling between the cardiovascular, musculoskeletal, and postural variables is affected by Parkinson's disease while the contribution of the calf and tibialis anterior muscles is greater for blood pressure regulation than postural sway. CONCLUSION The outcomes of this study could assist in the development of appropriate physical exercise programs that target lower limb muscles to improve the muscle-pump function and reduce postural instability in Parkinson's disease.
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Affiliation(s)
- Rabie Fadil
- Biomedical Engineering Program, University of North Dakota, Grand Forks, ND, USA
| | - Asenath X A Huether
- Parkinson Disease Research Laboratory, Department of Neurology, Sanford Health, Fargo, ND, USA
| | - Farshid Sadeghian
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada
| | - Ajay K Verma
- Biomedical Engineering Program, University of North Dakota, Grand Forks, ND, USA
| | - Andrew P Blaber
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada
| | - Jau-Shin Lou
- Parkinson Disease Research Laboratory, Department of Neurology, Sanford Health, Fargo, ND, USA
- Department of Neurology, University of North Dakota, School of Medicine, and Health Sciences, Grand Forks, USA
| | - Kouhyar Tavakolian
- Biomedical Engineering Program, University of North Dakota, Grand Forks, ND, USA.
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada.
- Biomedical Engineering Program, University of North Dakota, 243 Centennial Drive, Upson Hall II, Room 11, Grand Forks, ND, 58202, USA.
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Huether AX, Pottinger T, Lou JS. Screening cut-off scores for clinically significant fatigue in early Parkinson's disease. Clin Park Relat Disord 2023; 9:100228. [PMID: 38021342 PMCID: PMC10656208 DOI: 10.1016/j.prdoa.2023.100228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/13/2023] [Accepted: 10/30/2023] [Indexed: 12/01/2023] Open
Abstract
Background Fatigue is one of the most disabling non-motor symptoms in PD. Researchers have previously used cut-offs validated in non-PD conditions when using the Fatigue Severity Scale (FSS) or the Multidimensional Fatigue Inventory (MFI) scores to evaluate fatigue in PD. Objective We used a set of criteria for diagnosing clinically significant fatigue in PD to identify the proper cut-offs of the FSS and MFI. Methods One hundred thirty-one PD patients (59F; age 67.3 ± 7.6 y; H&Y 1.6 ± 0.7) were assessed for clinically significant fatigue, followed by the FSS, MFI, Center for Epidemiologic Studies Depression Scale (CES-D), and Montreal Cognitive Assessment (MOCA). Mean scores were compared between 17 patients who met diagnostic criteria (significant fatigue group, SFG) and 114 who did not (non-significant fatigue group, NSFG). Results The SFG had significantly higher scores in the 9-item FSS (p <.0001), total MFI score (p <.0001), and every MFI dimension except reduced motivation (p =.1) than the NSFG. Using area under the curve (AUC) of receiver operating characteristic (ROC) analyses, we recommend the following cut-offs: 9-item FSS 37; total MFI 60; general fatigue 11; reduced activity 10; physical fatigue 9; mental fatigue 9; and reduced motivation 9. Conclusions The recommended cut-offs for clinically significant fatigue in the FSS, MFI, and MFI dimensions will be valuable for diagnosing clinically significant fatigue and for future studies in investigating pathophysiology and potential treatments of fatigue in PD.
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Affiliation(s)
| | - Todd Pottinger
- Department of Neurology, Sanford Health, 2301 25th St S, Fargo, ND 58103, USA
| | - Jau-Shin Lou
- Department of Neurology, Sanford Health, 2301 25th St S, Fargo, ND 58103, USA
- Department of Neurology, University of North Dakota School of Medicine and Health Science, 1301 N Columbia Rd, Grand Forks, ND 58203, USA
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Fadil R, Huether AXA, Verma AK, Brunnemer R, Blaber AP, Lou JS, Tavakolian K. Effect of Parkinson’s Disease on Cardio-postural Coupling During Orthostatic Challenge. Front Physiol 2022; 13:863877. [PMID: 35755448 PMCID: PMC9214860 DOI: 10.3389/fphys.2022.863877] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 05/06/2022] [Indexed: 11/13/2022] Open
Abstract
Cardiac baroreflex and leg muscles activation are two important mechanisms for blood pressure regulation, failure of which could result in syncope and falls. Parkinson’s disease is known to be associated with cardiac baroreflex impairment and skeletal muscle dysfunction contributing to falls. However, the mechanical effect of leg muscles contractions on blood pressure (muscle-pump) and the baroreflex-like responses of leg muscles to blood pressure changes is yet to be comprehensively investigated. In this study, we examined the involvement of the cardiac baroreflex and this hypothesized reflex muscle-pump function (cardio-postural coupling) to maintain blood pressure in Parkinson’s patients and healthy controls during an orthostatic challenge induced via a head-up tilt test. We also studied the mechanical effect of the heart and leg muscles contractions on blood pressure. We recorded electrocardiogram blood pressure and electromyogram from 21 patients with Parkinson’s disease and 18 age-matched healthy controls during supine, head-up tilt at 70°, and standing positions with eyes open. The interaction and bidirectional causalities between the cardiovascular and musculoskeletal signals were studied using wavelet transform coherence and convergent cross mapping techniques, respectively. Parkinson’s patients displayed an impaired cardiac baroreflex and a reduced mechanical effect of the heart on blood pressure during supine, tilt and standing positions. However, the effectiveness of the cardiac baroreflex decreased in both Parkinson’s patients and healthy controls during standing as compared to supine. In addition, Parkinson’s patients demonstrated cardio-postural coupling impairment along with a mechanical muscle pump dysfunction which both could lead to dizziness and falls. Moreover, the cardiac baroreflex had a limited effect on blood pressure during standing while lower limb muscles continued to contract and maintain blood pressure via the muscle-pump mechanism. The study findings highlighted altered bidirectional coupling between heart rate and blood pressure, as well as between muscle activity and blood pressure in Parkinson’s disease. The outcomes of this study could assist in the development of appropriate physical exercise programs to reduce falls in Parkinson’s disease by monitoring the cardiac baroreflex and cardio-postural coupling effect on maintaining blood pressure.
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Affiliation(s)
- Rabie Fadil
- Biomedical Engineering Program, University of North Dakota, Grand Forks, ND, United States
| | - Asenath X. A. Huether
- Parkinson Disease Research Laboratory, Department of Neurology, Sanford Health, Fargo, ND, United States
| | - Ajay K. Verma
- Biomedical Engineering Program, University of North Dakota, Grand Forks, ND, United States
| | - Robert Brunnemer
- Biomedical Engineering Program, University of North Dakota, Grand Forks, ND, United States
| | - Andrew P. Blaber
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada
| | - Jau-Shin Lou
- Parkinson Disease Research Laboratory, Department of Neurology, Sanford Health, Fargo, ND, United States
- School of Medicine and Health Sciences, Department of Neurology, University of North Dakota, Grand Forks, ND, United States
| | - Kouhyar Tavakolian
- Biomedical Engineering Program, University of North Dakota, Grand Forks, ND, United States
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada
- *Correspondence: Kouhyar Tavakolian,
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Fadil R, Huether A, Brunnemer R, Blaber AP, Lou JS, Tavakolian K. Early Detection of Parkinson's Disease Using Center of Pressure Data and Machine Learning. Annu Int Conf IEEE Eng Med Biol Soc 2021; 2021:2433-2436. [PMID: 34891772 DOI: 10.1109/embc46164.2021.9630451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Parkinson's disease (PD) is a progressive neurodegenerative disorder resulting in abnormal body movements. Postural instability is one of the primary motor symptoms of PD and contributes to falls. Measurement of postural sway through center of pressure (COP) data might be an objective indicator of Parkinson's disease. The goal of this work is to use machine learning to evaluate if different features of postural sway can differentiate PD patients from healthy controls. Time domain, frequency domain, time-frequency, and structural features were extracted from COP data collected from 19 PD patients and 13 healthy controls (HC). The calculated parameters were input to various machine-learning models to classify PD and HC. Random Forest outperformed the rest of the classifiers in terms of accuracy, false negative rate, F1-score, and precision. Time domain features had the best performance in differentiating PD from HC compared to other feature groups.
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Barohn RJ, Gajewski B, Pasnoor M, Brown A, Herbelin LL, Kimminau KS, Mudaranthakam DP, Jawdat O, Dimachkie MM, Iyadurai S, Stino A, Kissel J, Pascuzzi R, Brannagan T, Wicklund M, Ahmed A, Walk D, Smith G, Quan D, Heitzman D, Tobon A, Ladha S, Wolfe G, Pulley M, Hayat G, Li Y, Thaisetthawatkul P, Lewis R, Biliciler S, Sharma K, Salajegheh K, Trivedi J, Mallonee W, Burns T, Jacoby M, Bril V, Vu T, Ramchandren S, Bazant M, Austin S, Karam C, Hussain Y, Kutz C, Twydell P, Scelsa S, Kushlaf H, Wymer J, Hehir M, Kolb N, Ralph J, Barboi A, Verma N, Ahmed M, Memon A, Saperstein D, Lou JS, Swenson A, Cash T. Patient Assisted Intervention for Neuropathy: Comparison of Treatment in Real Life Situations (PAIN-CONTRoLS): Bayesian Adaptive Comparative Effectiveness Randomized Trial. JAMA Neurol 2021; 78:68-76. [PMID: 32809014 DOI: 10.1001/jamaneurol.2020.2590] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Importance Cryptogenic sensory polyneuropathy (CSPN) is a common generalized slowly progressive neuropathy, second in prevalence only to diabetic neuropathy. Most patients with CSPN have significant pain. Many medications have been tried for pain reduction in CSPN, including antiepileptics, antidepressants, and sodium channel blockers. There are no comparative studies that identify the most effective medication for pain reduction in CSPN. Objective To determine which medication (pregabalin, duloxetine, nortriptyline, or mexiletine) is most effective for reducing neuropathic pain and best tolerated in patients with CSPN. Design, Setting, and Participants From December 1, 2014, through October 20, 2017, a bayesian adaptive, open-label randomized clinical comparative effectiveness study of pain in 402 participants with CSPN was conducted at 40 neurology care clinics. The trial included response adaptive randomization. Participants were patients with CSPN who were 30 years or older, with a pain score of 4 or greater on a numerical rating scale (range, 0-10, with higher scores indicating a higher level of pain). Participant allocation to 1 of 4 drug groups used the utility function and treatment's sample size for response adaptation randomization. At each interim analysis, a decision was made to continue enrolling (up to 400 participants) or stop the whole trial for success (80% power). Patient engagement was maintained throughout the trial, which helped guide the study and identify ways to communicate and disseminate information. Analysis was performed from December 11, 2015, to January 19, 2018. Interventions Participants were randomized to receive nortriptyline (n = 134), duloxetine (n = 126), pregabalin (n = 73), or mexiletine (n = 69). Main Outcomes and Measures The primary outcome was a utility function that was a composite of the efficacy (participant reported pain reduction of ≥50% from baseline to week 12) and quit (participants who discontinued medication) rates. Results Among the 402 participants (213 men [53.0%]; mean [SD] age, 60.1 [13.4] years; 343 White [85.3%]), the utility function of nortriptyline was 0.81 (95% bayesian credible interval [CrI], 0.69-0.93; 34 of 134 [25.4%] efficacious; and 51 of 134 [38.1%] quit), of duloxetine was 0.80 (95% CrI, 0.68-0.92; 29 of 126 [23.0%] efficacious; and 47 of 126 [37.3%] quit), pregabalin was 0.69 (95% CrI, 0.55-0.84; 11 of 73 [15.1%] efficacious; and 31 of 73 [42.5%] quit), and mexiletine was 0.58 (95% CrI, 0.42-0.75; 14 of 69 [20.3%] efficacious; and 40 of 69 [58.0%] quit). The probability each medication yielded the highest utility was 0.52 for nortriptyline, 0.43 for duloxetine, 0.05 for pregabalin, and 0.00 for mexiletine. Conclusions and Relevance This study found that, although there was no clearly superior medication, nortriptyline and duloxetine outperformed pregabalin and mexiletine when pain reduction and undesirable adverse effects are combined to a single end point. Trial Registration ClinicalTrials.gov Identifier: NCT02260388.
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Affiliation(s)
- Richard J Barohn
- Department of Neurology, The University of Kansas Medical Center, Kansas City
| | - Byron Gajewski
- Department of Biostatistics & Data Science, The University of Kansas Medical Center, Kansas City
| | - Mamatha Pasnoor
- Department of Neurology, The University of Kansas Medical Center, Kansas City
| | - Alexandra Brown
- Department of Biostatistics & Data Science, The University of Kansas Medical Center, Kansas City
| | - Laura L Herbelin
- Department of Neurology, The University of Kansas Medical Center, Kansas City
| | - Kim S Kimminau
- Department of Family Medicine, The University of Kansas Medical Center, Kansas City
| | - Dinesh Pal Mudaranthakam
- Department of Biostatistics & Data Science, The University of Kansas Medical Center, Kansas City
| | - Omar Jawdat
- Department of Neurology, The University of Kansas Medical Center, Kansas City
| | - Mazen M Dimachkie
- Department of Neurology, The University of Kansas Medical Center, Kansas City
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Gil Wolfe
- University at Buffalo, Buffalo, New York
| | | | | | | | | | - Richard Lewis
- Cedars-Sinai Medical Center, Los Angeles, California
| | | | | | | | | | | | - Ted Burns
- University of Virginia, Charlottesville
| | | | - Vera Bril
- University of Toronto, Toronto, Ontario, Canada
| | - Tuan Vu
- University of South Florida-Tampa, Tampa
| | | | - Mark Bazant
- Norton Neurology Services, Louisville, Kentucky
| | | | | | | | - Christen Kutz
- Colorado Springs Neurological Associates, Colorado Springs
| | | | | | | | - James Wymer
- University of Florida-Gainesville, Gainesville
| | | | | | | | | | - Navin Verma
- Neurological Services of Orlando Research, Orlando, Florida
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Verma AK, Aarotale PN, Dehkordi P, Lou JS, Tavakolian K. Relationship between Ischemic Stroke and Pulse Rate Variability as a Surrogate of Heart Rate Variability. Brain Sci 2019; 9:E162. [PMID: 31295816 PMCID: PMC6680838 DOI: 10.3390/brainsci9070162] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 06/27/2019] [Accepted: 07/03/2019] [Indexed: 12/18/2022] Open
Abstract
Autonomic reflex ascertains cardiovascular homeostasis during standing. Impaired autonomic reflex could lead to dizziness and falls while standing; this is prevalent in stroke survivors. Pulse rate variability (PRV) has been utilized in the literature in lieu of heart rate variability (HRV) for ambulatory and portable monitoring of autonomic reflex predominantly in young, healthy individuals. Here, we compared the PRV with gold standard HRV for monitoring autonomic reflex in ischemic stroke survivors. Continuous blood pressure and electrocardiography were acquired from ischemic stroke survivors (64 ± 1 years) and age-matched controls (65 ± 2 years) during a 10-minute sit-to-stand test. Beat-by-beat heart period (represented by RR and peak-to-peak (PP) intervals), systolic blood pressure (SBP), diastolic blood pressure (DBP), and pulse arrival time (PAT), an indicator of arterial stiffness, were derived. Time and frequency domain HRV (from RR intervals) and PRV (from PP intervals) metrics were extracted. PAT was lower (248 ± 7 ms vs. 270 ± 8 ms, p < 0.05) suggesting higher arterial stiffness in stroke survivors compared to controls during standing. Further, compared to controls, the agreement between HRV and PRV was impaired in stroke survivors while standing. The study outcomes suggest that caution should be exercised when considering PRV as a surrogate of HRV for monitoring autonomic cardiovascular control while standing in stroke survivors.
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Affiliation(s)
- Ajay K Verma
- School of Electrical Engineering and Computer Science, University of North Dakota, Grand Forks, ND 58202, USA
| | - Parshuram N Aarotale
- School of Electrical Engineering and Computer Science, University of North Dakota, Grand Forks, ND 58202, USA
| | - Parastoo Dehkordi
- Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Jau-Shin Lou
- Sanford Brain and Spine Center, Sanford Health, Fargo, ND 58103, USA
| | - Kouhyar Tavakolian
- School of Electrical Engineering and Computer Science, University of North Dakota, Grand Forks, ND 58202, USA.
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Sanders DB, Harati Y, Juel VC, Lou JS, Marburger T, Pascuzzi RM, Peltier AC, Richman DP, Smith AG. Reply. Muscle Nerve 2018; 57:E130-E131. [PMID: 29406616 DOI: 10.1002/mus.26089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 01/30/2018] [Accepted: 02/01/2018] [Indexed: 11/12/2022]
Affiliation(s)
- Donald B Sanders
- Department of Neurology, Duke University Medical Center, Durham, North Carolina, USA
| | - Yadollah Harati
- Department of Neurology, Baylor College of Medicine, Houston, Texas, USA
| | - Vern C Juel
- Department of Neurology, Duke University Medical Center, Durham, North Carolina, USA
| | - Jau-Shin Lou
- Department of Neurology, University of North Dakota School of Medicine & Health Science, Fargo, North Dakota, USA
| | - Tessa Marburger
- Catholic Health Initiative St. Alexius Health - Williston Medical Center, Williston, North Dakota, USA
| | - Robert M Pascuzzi
- Department of Neurology, Indiana University, Indianapolis, Indiana, USA
| | - Amanda C Peltier
- Department of Neurology, Vanderbilt Medical Center, Nashville, Tennessee, USA
| | - David P Richman
- Department of Neurology, Center for Neuroscience, University of California, Davis, Davis, California, USA
| | - A Gordon Smith
- Department of Neurology, University of Utah School of Medicine, Salt Lake City, Utah, USA
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Sanders DB, Juel VC, Harati Y, Smith AG, Peltier AC, Marburger T, Lou JS, Pascuzzi RM, Richman DP, Xie T, Demmel V, Jacobus LR, Aleš KL, Jacobus DP. 3,4-diaminopyridine base effectively treats the weakness of Lambert-Eaton myasthenia. Muscle Nerve 2018; 57:561-568. [PMID: 29280483 PMCID: PMC5900968 DOI: 10.1002/mus.26052] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 12/16/2017] [Accepted: 12/19/2017] [Indexed: 01/24/2023]
Abstract
Introduction: 3,4‐diaminopyridine has been used to treat Lambert‐Eaton myasthenia (LEM) for 30 years despite the lack of conclusive evidence of efficacy. Methods: We conducted a randomized double‐blind placebo‐controlled withdrawal study in patients with LEM who had been on stable regimens of 3,4‐diaminopyridine base (3,4‐DAP) for ≥ 3 months. The primary efficacy endpoint was >30% deterioration in triple timed up‐and‐go (3TUG) times during tapered drug withdrawal. The secondary endpoint was self‐assessment of LEM–related weakness (W‐SAS). Results: Thirty‐two participants were randomized to continuous 3,4‐DAP or placebo groups. None of the 14 participants who received continuous 3,4‐DAP had > 30% deterioration in 3TUG time versus 72% of the 18 who tapered to placebo (P < 0.0001). W‐SAS similarly demonstrated an advantage for continuous treatment over placebo (P < 0.0001). Requirement for rescue and adverse events were more common in the placebo group. Discussion: This trial provides significant evidence of efficacy of 3,4‐DAP in the maintenance of strength in LEM. Muscle Nerve57: 561–568, 2018
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Affiliation(s)
- Donald B Sanders
- Department of Neurology, Duke University Medical Center, Box 3403, Durham, North Carolina, 27710, USA
| | - Vern C Juel
- Department of Neurology, Duke University Medical Center, Box 3403, Durham, North Carolina, 27710, USA
| | - Yadollah Harati
- Department of Neurology, Baylor College of Medicine, Houston, Texas, USA
| | - A Gordon Smith
- Department of Neurology, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Amanda C Peltier
- Department of Neurology, Vanderbilt Medical Center, Nashville, Tennessee, USA
| | - Tessa Marburger
- Department of Neurology, Oregon Health and Science University, Portland, Oregon, USA
| | - Jau-Shin Lou
- Department of Neurology, University of North Dakota School of Medicine & Health Science, Fargo, North Dakota, USA
| | - Robert M Pascuzzi
- Department of Neurology, Indiana University, Indianapolis, Indiana, USA
| | - David P Richman
- Department of Neurology, Center for Neuroscience, University of California, Davis, Davis, California, USA
| | - Tai Xie
- Brightech International LLC, Somerset, New Jersey, USA
| | | | | | - Kathy L Aleš
- Jacobus Pharmaceutical Company, Princeton, New Jersey
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Brys M, Fox MD, Agarwal S, Biagioni M, Dacpano G, Kumar P, Pirraglia E, Chen R, Wu A, Fernandez H, Wagle Shukla A, Lou JS, Gray Z, Simon DK, Di Rocco A, Pascual-Leone A. Multifocal repetitive TMS for motor and mood symptoms of Parkinson disease: A randomized trial. Neurology 2016; 87:1907-1915. [PMID: 27708129 DOI: 10.1212/wnl.0000000000003279] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 07/14/2016] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To assess whether multifocal, high-frequency repetitive transcranial magnetic stimulation (rTMS) of motor and prefrontal cortex benefits motor and mood symptoms in patients with Parkinson disease (PD). METHODS Patients with PD and depression were enrolled in this multicenter, double-blind, sham-controlled, parallel-group study of real or realistic (electric) sham rTMS. Patients were randomized to 1 of 4 groups: bilateral M1 ( + sham dorsolateral prefrontal cortex [DLPFC]), DLPFC ( + sham M1), M1 + DLPFC, or double sham. The TMS course consisted of 10 daily sessions of 2,000 stimuli for the left DLPFC and 1,000 stimuli for each M1 (50 × 4-second trains of 40 stimuli at 10 Hz). Patients were evaluated at baseline, at 1 week, and at 1, 3, and 6 months after treatment. Primary endpoints were changes in motor function assessed with the Unified Parkinson's Disease Rating Scale-III and in mood with the Hamilton Depression Rating Scale at 1 month. RESULTS Of the 160 patients planned for recruitment, 85 were screened, 61 were randomized, and 50 completed all study visits. Real M1 rTMS resulted in greater improvement in motor function than sham at the primary endpoint (p < 0.05). There was no improvement in mood in the DLPFC group compared to the double-sham group, as well as no benefit to combining M1 and DLPFC stimulation for either motor or mood symptoms. CONCLUSIONS In patients with PD with depression, M1 rTMS is an effective treatment of motor symptoms, while mood benefit after 2 weeks of DLPFC rTMS is not better than sham. Targeting both M1 and DLPFC in each rTMS session showed no evidence of synergistic effects. CLINICALTRIALSGOV IDENTIFIER NCT01080794. CLASSIFICATION OF EVIDENCE This study provides Class I evidence that in patients with PD with depression, M1 rTMS leads to improvement in motor function while DLPFC rTMS does not lead to improvement in depression compared to sham rTMS.
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Affiliation(s)
- Miroslaw Brys
- From the New York University School of Medicine (M.B., S.A., M.B., G.D., P.K., A.D.R.), Marlene and Paolo Fresco Institute for Parkinson's and Movement Disorders, Department of Neurology, New York; Berenson-Allen Center for Noninvasive Brain Stimulation (M.D.F., Z.G., A.P.-L.), Division of Cognitive Neurology, and Parkinson's Disease and Movement Disorders Center (D.K.S., A.P.-L.), Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA; Department of Neurology (A.W.) and Ahmanson-Lovelace Brain Mapping Center (A.W.), University of California School of Medicine, Los Angeles; Cleveland Clinic (H.F.), Department of Neurology, OH; Toronto Western Research Institute (R.C.), University of Toronto, Ontario, Canada; University of Florida (A.W.S.), Department of Neurology, Gainesville; University of North Dakota School of Medicine (J.-S.L.), Department of Neurology, Grand Forks; and Center for Brain Health (E.P.), NYU School of Medicine, New York, NY
| | - Michael D Fox
- From the New York University School of Medicine (M.B., S.A., M.B., G.D., P.K., A.D.R.), Marlene and Paolo Fresco Institute for Parkinson's and Movement Disorders, Department of Neurology, New York; Berenson-Allen Center for Noninvasive Brain Stimulation (M.D.F., Z.G., A.P.-L.), Division of Cognitive Neurology, and Parkinson's Disease and Movement Disorders Center (D.K.S., A.P.-L.), Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA; Department of Neurology (A.W.) and Ahmanson-Lovelace Brain Mapping Center (A.W.), University of California School of Medicine, Los Angeles; Cleveland Clinic (H.F.), Department of Neurology, OH; Toronto Western Research Institute (R.C.), University of Toronto, Ontario, Canada; University of Florida (A.W.S.), Department of Neurology, Gainesville; University of North Dakota School of Medicine (J.-S.L.), Department of Neurology, Grand Forks; and Center for Brain Health (E.P.), NYU School of Medicine, New York, NY
| | - Shashank Agarwal
- From the New York University School of Medicine (M.B., S.A., M.B., G.D., P.K., A.D.R.), Marlene and Paolo Fresco Institute for Parkinson's and Movement Disorders, Department of Neurology, New York; Berenson-Allen Center for Noninvasive Brain Stimulation (M.D.F., Z.G., A.P.-L.), Division of Cognitive Neurology, and Parkinson's Disease and Movement Disorders Center (D.K.S., A.P.-L.), Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA; Department of Neurology (A.W.) and Ahmanson-Lovelace Brain Mapping Center (A.W.), University of California School of Medicine, Los Angeles; Cleveland Clinic (H.F.), Department of Neurology, OH; Toronto Western Research Institute (R.C.), University of Toronto, Ontario, Canada; University of Florida (A.W.S.), Department of Neurology, Gainesville; University of North Dakota School of Medicine (J.-S.L.), Department of Neurology, Grand Forks; and Center for Brain Health (E.P.), NYU School of Medicine, New York, NY
| | - Milton Biagioni
- From the New York University School of Medicine (M.B., S.A., M.B., G.D., P.K., A.D.R.), Marlene and Paolo Fresco Institute for Parkinson's and Movement Disorders, Department of Neurology, New York; Berenson-Allen Center for Noninvasive Brain Stimulation (M.D.F., Z.G., A.P.-L.), Division of Cognitive Neurology, and Parkinson's Disease and Movement Disorders Center (D.K.S., A.P.-L.), Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA; Department of Neurology (A.W.) and Ahmanson-Lovelace Brain Mapping Center (A.W.), University of California School of Medicine, Los Angeles; Cleveland Clinic (H.F.), Department of Neurology, OH; Toronto Western Research Institute (R.C.), University of Toronto, Ontario, Canada; University of Florida (A.W.S.), Department of Neurology, Gainesville; University of North Dakota School of Medicine (J.-S.L.), Department of Neurology, Grand Forks; and Center for Brain Health (E.P.), NYU School of Medicine, New York, NY
| | - Geraldine Dacpano
- From the New York University School of Medicine (M.B., S.A., M.B., G.D., P.K., A.D.R.), Marlene and Paolo Fresco Institute for Parkinson's and Movement Disorders, Department of Neurology, New York; Berenson-Allen Center for Noninvasive Brain Stimulation (M.D.F., Z.G., A.P.-L.), Division of Cognitive Neurology, and Parkinson's Disease and Movement Disorders Center (D.K.S., A.P.-L.), Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA; Department of Neurology (A.W.) and Ahmanson-Lovelace Brain Mapping Center (A.W.), University of California School of Medicine, Los Angeles; Cleveland Clinic (H.F.), Department of Neurology, OH; Toronto Western Research Institute (R.C.), University of Toronto, Ontario, Canada; University of Florida (A.W.S.), Department of Neurology, Gainesville; University of North Dakota School of Medicine (J.-S.L.), Department of Neurology, Grand Forks; and Center for Brain Health (E.P.), NYU School of Medicine, New York, NY
| | - Pawan Kumar
- From the New York University School of Medicine (M.B., S.A., M.B., G.D., P.K., A.D.R.), Marlene and Paolo Fresco Institute for Parkinson's and Movement Disorders, Department of Neurology, New York; Berenson-Allen Center for Noninvasive Brain Stimulation (M.D.F., Z.G., A.P.-L.), Division of Cognitive Neurology, and Parkinson's Disease and Movement Disorders Center (D.K.S., A.P.-L.), Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA; Department of Neurology (A.W.) and Ahmanson-Lovelace Brain Mapping Center (A.W.), University of California School of Medicine, Los Angeles; Cleveland Clinic (H.F.), Department of Neurology, OH; Toronto Western Research Institute (R.C.), University of Toronto, Ontario, Canada; University of Florida (A.W.S.), Department of Neurology, Gainesville; University of North Dakota School of Medicine (J.-S.L.), Department of Neurology, Grand Forks; and Center for Brain Health (E.P.), NYU School of Medicine, New York, NY
| | - Elizabeth Pirraglia
- From the New York University School of Medicine (M.B., S.A., M.B., G.D., P.K., A.D.R.), Marlene and Paolo Fresco Institute for Parkinson's and Movement Disorders, Department of Neurology, New York; Berenson-Allen Center for Noninvasive Brain Stimulation (M.D.F., Z.G., A.P.-L.), Division of Cognitive Neurology, and Parkinson's Disease and Movement Disorders Center (D.K.S., A.P.-L.), Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA; Department of Neurology (A.W.) and Ahmanson-Lovelace Brain Mapping Center (A.W.), University of California School of Medicine, Los Angeles; Cleveland Clinic (H.F.), Department of Neurology, OH; Toronto Western Research Institute (R.C.), University of Toronto, Ontario, Canada; University of Florida (A.W.S.), Department of Neurology, Gainesville; University of North Dakota School of Medicine (J.-S.L.), Department of Neurology, Grand Forks; and Center for Brain Health (E.P.), NYU School of Medicine, New York, NY
| | - Robert Chen
- From the New York University School of Medicine (M.B., S.A., M.B., G.D., P.K., A.D.R.), Marlene and Paolo Fresco Institute for Parkinson's and Movement Disorders, Department of Neurology, New York; Berenson-Allen Center for Noninvasive Brain Stimulation (M.D.F., Z.G., A.P.-L.), Division of Cognitive Neurology, and Parkinson's Disease and Movement Disorders Center (D.K.S., A.P.-L.), Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA; Department of Neurology (A.W.) and Ahmanson-Lovelace Brain Mapping Center (A.W.), University of California School of Medicine, Los Angeles; Cleveland Clinic (H.F.), Department of Neurology, OH; Toronto Western Research Institute (R.C.), University of Toronto, Ontario, Canada; University of Florida (A.W.S.), Department of Neurology, Gainesville; University of North Dakota School of Medicine (J.-S.L.), Department of Neurology, Grand Forks; and Center for Brain Health (E.P.), NYU School of Medicine, New York, NY
| | - Allan Wu
- From the New York University School of Medicine (M.B., S.A., M.B., G.D., P.K., A.D.R.), Marlene and Paolo Fresco Institute for Parkinson's and Movement Disorders, Department of Neurology, New York; Berenson-Allen Center for Noninvasive Brain Stimulation (M.D.F., Z.G., A.P.-L.), Division of Cognitive Neurology, and Parkinson's Disease and Movement Disorders Center (D.K.S., A.P.-L.), Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA; Department of Neurology (A.W.) and Ahmanson-Lovelace Brain Mapping Center (A.W.), University of California School of Medicine, Los Angeles; Cleveland Clinic (H.F.), Department of Neurology, OH; Toronto Western Research Institute (R.C.), University of Toronto, Ontario, Canada; University of Florida (A.W.S.), Department of Neurology, Gainesville; University of North Dakota School of Medicine (J.-S.L.), Department of Neurology, Grand Forks; and Center for Brain Health (E.P.), NYU School of Medicine, New York, NY
| | - Hubert Fernandez
- From the New York University School of Medicine (M.B., S.A., M.B., G.D., P.K., A.D.R.), Marlene and Paolo Fresco Institute for Parkinson's and Movement Disorders, Department of Neurology, New York; Berenson-Allen Center for Noninvasive Brain Stimulation (M.D.F., Z.G., A.P.-L.), Division of Cognitive Neurology, and Parkinson's Disease and Movement Disorders Center (D.K.S., A.P.-L.), Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA; Department of Neurology (A.W.) and Ahmanson-Lovelace Brain Mapping Center (A.W.), University of California School of Medicine, Los Angeles; Cleveland Clinic (H.F.), Department of Neurology, OH; Toronto Western Research Institute (R.C.), University of Toronto, Ontario, Canada; University of Florida (A.W.S.), Department of Neurology, Gainesville; University of North Dakota School of Medicine (J.-S.L.), Department of Neurology, Grand Forks; and Center for Brain Health (E.P.), NYU School of Medicine, New York, NY
| | - Aparna Wagle Shukla
- From the New York University School of Medicine (M.B., S.A., M.B., G.D., P.K., A.D.R.), Marlene and Paolo Fresco Institute for Parkinson's and Movement Disorders, Department of Neurology, New York; Berenson-Allen Center for Noninvasive Brain Stimulation (M.D.F., Z.G., A.P.-L.), Division of Cognitive Neurology, and Parkinson's Disease and Movement Disorders Center (D.K.S., A.P.-L.), Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA; Department of Neurology (A.W.) and Ahmanson-Lovelace Brain Mapping Center (A.W.), University of California School of Medicine, Los Angeles; Cleveland Clinic (H.F.), Department of Neurology, OH; Toronto Western Research Institute (R.C.), University of Toronto, Ontario, Canada; University of Florida (A.W.S.), Department of Neurology, Gainesville; University of North Dakota School of Medicine (J.-S.L.), Department of Neurology, Grand Forks; and Center for Brain Health (E.P.), NYU School of Medicine, New York, NY
| | - Jau-Shin Lou
- From the New York University School of Medicine (M.B., S.A., M.B., G.D., P.K., A.D.R.), Marlene and Paolo Fresco Institute for Parkinson's and Movement Disorders, Department of Neurology, New York; Berenson-Allen Center for Noninvasive Brain Stimulation (M.D.F., Z.G., A.P.-L.), Division of Cognitive Neurology, and Parkinson's Disease and Movement Disorders Center (D.K.S., A.P.-L.), Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA; Department of Neurology (A.W.) and Ahmanson-Lovelace Brain Mapping Center (A.W.), University of California School of Medicine, Los Angeles; Cleveland Clinic (H.F.), Department of Neurology, OH; Toronto Western Research Institute (R.C.), University of Toronto, Ontario, Canada; University of Florida (A.W.S.), Department of Neurology, Gainesville; University of North Dakota School of Medicine (J.-S.L.), Department of Neurology, Grand Forks; and Center for Brain Health (E.P.), NYU School of Medicine, New York, NY
| | - Zachary Gray
- From the New York University School of Medicine (M.B., S.A., M.B., G.D., P.K., A.D.R.), Marlene and Paolo Fresco Institute for Parkinson's and Movement Disorders, Department of Neurology, New York; Berenson-Allen Center for Noninvasive Brain Stimulation (M.D.F., Z.G., A.P.-L.), Division of Cognitive Neurology, and Parkinson's Disease and Movement Disorders Center (D.K.S., A.P.-L.), Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA; Department of Neurology (A.W.) and Ahmanson-Lovelace Brain Mapping Center (A.W.), University of California School of Medicine, Los Angeles; Cleveland Clinic (H.F.), Department of Neurology, OH; Toronto Western Research Institute (R.C.), University of Toronto, Ontario, Canada; University of Florida (A.W.S.), Department of Neurology, Gainesville; University of North Dakota School of Medicine (J.-S.L.), Department of Neurology, Grand Forks; and Center for Brain Health (E.P.), NYU School of Medicine, New York, NY
| | - David K Simon
- From the New York University School of Medicine (M.B., S.A., M.B., G.D., P.K., A.D.R.), Marlene and Paolo Fresco Institute for Parkinson's and Movement Disorders, Department of Neurology, New York; Berenson-Allen Center for Noninvasive Brain Stimulation (M.D.F., Z.G., A.P.-L.), Division of Cognitive Neurology, and Parkinson's Disease and Movement Disorders Center (D.K.S., A.P.-L.), Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA; Department of Neurology (A.W.) and Ahmanson-Lovelace Brain Mapping Center (A.W.), University of California School of Medicine, Los Angeles; Cleveland Clinic (H.F.), Department of Neurology, OH; Toronto Western Research Institute (R.C.), University of Toronto, Ontario, Canada; University of Florida (A.W.S.), Department of Neurology, Gainesville; University of North Dakota School of Medicine (J.-S.L.), Department of Neurology, Grand Forks; and Center for Brain Health (E.P.), NYU School of Medicine, New York, NY
| | - Alessandro Di Rocco
- From the New York University School of Medicine (M.B., S.A., M.B., G.D., P.K., A.D.R.), Marlene and Paolo Fresco Institute for Parkinson's and Movement Disorders, Department of Neurology, New York; Berenson-Allen Center for Noninvasive Brain Stimulation (M.D.F., Z.G., A.P.-L.), Division of Cognitive Neurology, and Parkinson's Disease and Movement Disorders Center (D.K.S., A.P.-L.), Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA; Department of Neurology (A.W.) and Ahmanson-Lovelace Brain Mapping Center (A.W.), University of California School of Medicine, Los Angeles; Cleveland Clinic (H.F.), Department of Neurology, OH; Toronto Western Research Institute (R.C.), University of Toronto, Ontario, Canada; University of Florida (A.W.S.), Department of Neurology, Gainesville; University of North Dakota School of Medicine (J.-S.L.), Department of Neurology, Grand Forks; and Center for Brain Health (E.P.), NYU School of Medicine, New York, NY
| | - Alvaro Pascual-Leone
- From the New York University School of Medicine (M.B., S.A., M.B., G.D., P.K., A.D.R.), Marlene and Paolo Fresco Institute for Parkinson's and Movement Disorders, Department of Neurology, New York; Berenson-Allen Center for Noninvasive Brain Stimulation (M.D.F., Z.G., A.P.-L.), Division of Cognitive Neurology, and Parkinson's Disease and Movement Disorders Center (D.K.S., A.P.-L.), Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA; Department of Neurology (A.W.) and Ahmanson-Lovelace Brain Mapping Center (A.W.), University of California School of Medicine, Los Angeles; Cleveland Clinic (H.F.), Department of Neurology, OH; Toronto Western Research Institute (R.C.), University of Toronto, Ontario, Canada; University of Florida (A.W.S.), Department of Neurology, Gainesville; University of North Dakota School of Medicine (J.-S.L.), Department of Neurology, Grand Forks; and Center for Brain Health (E.P.), NYU School of Medicine, New York, NY.
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Carter GT, Weiss MD, Lou JS, Jensen MP, Abresch RT, Martin TK, Hecht TW, Han JJ, Weydt P, Kraft GH. Modafinil to treat fatigue in amyotrophic lateral sclerosis: An open label pilot study. Am J Hosp Palliat Care 2016; 22:55-9. [PMID: 15736608 DOI: 10.1177/104990910502200112] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
An open label trial of modafinil was conducted to determine whether it would be tolerated and effective in treating fatigue for people with amyotrophic lateral sclerosis (ALS). Fifteen patients with ALS were treated for two weeks with either 200 mg or 400 mg of modafinil. Reported side effects of the medication were mild and included diarrhea, headache, nervousness, and insomnia. Side effects did not result in any study dropouts. Following treatment, mean scores on the Fatigue Severity Scale (FSS) decreased from 51.3 (SD 9.2) to 42.8 (SD 10.2). On the Epworth Sleepiness Scale (ESS), mean scores decreased from 8.2 (SD 2.0) to 4.5 (SD 2.4). Reductions in both the FSS and the ESS were significant at p < 0.001. Mean scores on the self-report version of the Functional Independence Measure (FIM-SR) increased from 115.2 (SD 5.6) to 118.1 (SD 5.4), with p < 0.01. This pilot study suggests that modafinil is well-tolerated and may reduce symptoms of fatigue in ALS. Further blinded, controlled studies of modafinil in larger numbers of ALS patients are warranted.
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Affiliation(s)
- Gregory T Carter
- Department of Rehabilitation Medicine, University of Washington School of Medicine, Seattle, Washington, USA
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Abstract
BACKGROUND Fatigue is common in patients with Parkinson's disease (PD). It occurs at every stage of PD and affects quality of life. Fatigue severity worsens over time as PD progresses, and it is associated with other non-motor symptoms such as apathy, depression, sleep disorder, and cognitive dysfunction. PURPOSE In this literature review, I discuss the measurement and pathophysiology of fatigue and fatigability. There are no evidence-based treatments for fatigue and fatigability available. I review several pilot studies on the effects of pharmacological agents and exercise on fatigue and fatigability. These studies provide some insights on the design of future larger clinical trials. CONCLUSION Fatigue inventories including The Fatigue Severity Scale, the Multidimensional Fatigue Inventory, or theParkinson Fatigue Scale are used to assess the severity of fatigue. Finger tapping and force generation are useful in quantifying physical fatigability. A reaction time paradigm such as the Attention Network Test can be used to measure cognitive fatigability. Physical fatigability is associated with the change in cortical excitability in PD measured by Transcranial Magnetic Stimulation. Cognitive fatigability is most likely associated with the neurotransmitter abnormalities (dopaminergic, cholinergic and noradrenergic) in PD. Levodopa, modafanil, methylphenidate, and rasagiline may be effective in treating fatigue and fatigability. Exercise programs may also be effective.
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Kluger BM, Herlofson K, Chou KL, Lou JS, Goetz CG, Lang AE, Weintraub D, Friedman J. Parkinson's disease-related fatigue: A case definition and recommendations for clinical research. Mov Disord 2016; 31:625-31. [PMID: 26879133 DOI: 10.1002/mds.26511] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 11/04/2015] [Accepted: 11/18/2015] [Indexed: 12/28/2022] Open
Abstract
Fatigue is one of the most common and disabling symptoms in Parkinson's disease (PD). Since fatigue was first described as a common feature of PD 20 years ago, little progress has been made in understanding its causes or treatment. Importantly, PD patients attending the 2013 World Parkinson Congress voted fatigue as the leading symptom in need of further research. In response, the Parkinson Disease Foundation and ProjectSpark assembled an international team of experts to create recommendations for clinical research to advance this field. The working group identified several areas in which shared standards would improve research quality and foster progress including terminology, diagnostic criteria, and measurement. Terminology needs to (1) clearly distinguish fatigue from related phenomena (eg, sleepiness, apathy, depression); (2) differentiate subjective fatigue complaints from objective performance fatigability; and (3) specify domains affected by fatigue and causal factors. We propose diagnostic criteria for PD-related fatigue to guide participant selection for clinical trials and add rigor to mechanistic studies. Recommendations are made for measurement of subjective fatigue complaints, performance fatigability, and neurophysiologic changes. We also suggest areas in which future research is needed to address methodological issues and validate or optimize current practices. Many limitations in current PD-related fatigue research may be addressed by improving methodological standards, many of which are already being successfully applied in clinical fatigue research in other medical conditions (eg, cancer, multiple sclerosis). © 2016 International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Benzi M Kluger
- Department of Neurology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | | | - Kelvin L Chou
- Departments of Neurology and Neurosurgery, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Jau-Shin Lou
- Department of Neurology, University of North Dakota School of Medicine and Health Science, Department of Neurology, Sanford Health, Fargo, North Dakota, USA
| | - Christopher G Goetz
- Department of Neurological Sciences, Rush University Medical Center, Chicago, Illinois, USA
| | - Anthony E Lang
- Morton and Gloria Shulman Movement Disorders Clinic and the Edmond J. Safra Program in Parkinson's Disease, Toronto Western Hospital, Toronto, Ontario, Canada
| | - Daniel Weintraub
- Departments of Psychiatry and Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Parkinson's Disease and Mental Illness Research, Education and Clinical Centers (PADRECC and MIRECC), Philadelphia Veterans Affairs Medical Center, Philadelphia, Pennsylvania, USA
| | - Joseph Friedman
- Department of Neurology, Butler Hospital, Alpert Medical School of Brown University, Providence, Rhode Island, USA
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Burns TM, Smith GA, Allen JA, Amato AA, Arnold WD, Barohn R, Benatar M, Bird SJ, Bromberg M, Chahin N, Ciafaloni E, Cohen JA, Corse A, Crum BA, David WS, Dimberg E, Sousa EAD, Donofrio PD, Dyck PJB, Engel AG, Ensrud ER, Ferrante M, Freimer M, Gable KL, Gibson S, Gilchrist JM, Goldstein JM, Gooch CL, Goodman BP, Gorelov D, Gospe SM, Goyal NA, Guidon AC, Guptill JT, Gutmann L, Gutmann L, Gwathmey K, Harati Y, Harper CM, Hehir MK, Hobson-Webb LD, Howard JF, Jackson CE, Johnson N, Jones SM, Juel VC, Kaminski HJ, Karam C, Kennelly KD, Khella S, Khoury J, Kincaid JC, Kissel JT, Kolb N, Lacomis D, Ladha S, Larriviere D, Lewis RA, Li Y, Litchy WJ, Logigian E, Lou JS, MacGowen DJ, Maselli R, Massey JM, Mauermann ML, Mathews KD, Meriggioli MN, Miller RG, Moon JS, Mozaffar T, Nations SP, Nowak RJ, Ostrow LW, Pascuzzi RM, Peltier A, Ruzhansky K, Richman DP, Ross MA, Rubin DEVONI, Russell JA, Sachs GM, Salajegheh MK, Saperstein DS, Scelsa S, Selcen D, Shaibani A, Shieh PB, Silvestri NJ, Singleton JR, Smith BE, So YT, Solorzano G, Sorenson EJ, Srinivasen J, Tavee J, Tawil R, Thaisetthawatkul P, Thornton C, Trivedi J, Vernino S, Wang AK, Webb TA, Weiss MD, Windebank AJ, Wolfe GI. Editorial by concerned physicians: Unintended effect of the orphan drug act on the potential cost of 3,4-diaminopyridine. Muscle Nerve 2015; 53:165-8. [DOI: 10.1002/mus.25009] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Wills AM, Hubbard J, Macklin EA, Glass J, Tandan R, Simpson EP, Brooks B, Gelinas D, Mitsumoto H, Mozaffar T, Hanes GP, Ladha SS, Heiman-Patterson T, Katz J, Lou JS, Mahoney K, Grasso D, Lawson R, Yu H, Cudkowicz M. Hypercaloric enteral nutrition in patients with amyotrophic lateral sclerosis: a randomised, double-blind, placebo-controlled phase 2 trial. Lancet 2014; 383:2065-2072. [PMID: 24582471 PMCID: PMC4176708 DOI: 10.1016/s0140-6736(14)60222-1] [Citation(s) in RCA: 186] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Amyotrophic lateral sclerosis is a fatal neurodegenerative disease with few therapeutic options. Mild obesity is associated with greater survival in patients with the disease, and calorie-dense diets increased survival in a mouse model. We aimed to assess the safety and tolerability of two hypercaloric diets in patients with amyotrophic lateral sclerosis receiving enteral nutrition. METHODS In this double-blind, placebo-controlled, randomised phase 2 clinical trial, we enrolled adults with amyotrophic lateral sclerosis from participating centres in the USA. Eligible participants were aged 18 years or older with no history of diabetes or liver or cardiovascular disease, and who were already receiving percutaneous enteral nutrition. We randomly assigned participants (1:1:1) using a computer-generated list of random numbers to one of three dietary interventions: replacement calories using an isocaloric tube-fed diet (control), a high-carbohydrate hypercaloric tube-fed diet (HC/HC), or a high-fat hypercaloric tube-fed diet (HF/HC). Participants received the intervention diets for 4 months and were followed up for 5 months. The primary outcomes were safety and tolerability, analysed in all patients who began their study diet. This trial is registered with ClinicalTrials.gov, number NCT00983983. FINDINGS Between Dec 14, 2009, and Nov 2, 2012, we enrolled 24 participants, of whom 20 started their study diet (six in the control group, eight in the HC/HC group, and six in the HF/HC group). One patient in the control group, one in the HC/HC group, and two in the HF/HC group withdrew consent before receiving the intervention. Participants who received the HC/HC diet had a smaller total number of adverse events than did those in the other groups (23 in the HC/HC group vs 42 in the control group vs 48 in the HF/HC group; overall, p=0.06; HC/HC vs control, p=0.06) and significantly fewer serious adverse events than did those on the control diet (none vs nine; p=0.0005). Fewer patients in the HC/HC group discontinued their study diet due to adverse events (none [0%] of eight in the HC/HC group vs three [50%] of six in the control group). During the 5 month follow-up, no deaths occurred in the nine patients assigned to the HC/HC diet compared with three deaths (43%) in the seven patients assigned to the control diet (log-rank p=0.03). Adverse events, tolerability, deaths, and disease progression did not differ significantly between the HF/HC group and the control group. INTERPRETATION Our results provide preliminary evidence that hypercaloric enteral nutrition is safe and tolerable in patients with amyotrophic lateral sclerosis, and support the study of nutritional interventions in larger randomised controlled trials at earlier stages of the disease. FUNDING Muscular Dystrophy Association, National Center for Research Resources, National Institutes of Health, and Harvard NeuroDiscovery Center.
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Affiliation(s)
- Anne-Marie Wills
- Department of Neurology and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
| | - Jane Hubbard
- Harvard Catalyst/Massachusetts General Hospital Clinical Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Eric A Macklin
- Biostatistics Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | | | - Rup Tandan
- University of Vermont, Burlington, VT, USA
| | | | - Benjamin Brooks
- Carolinas Medical Center Neuromuscular/ALS-MDA Center, Charlotte, NC, USA
| | | | | | | | | | - Shafeeq S Ladha
- Barrow Neurological Institute/St Joseph's Hospital and Medical Center, Phoenix, AZ, USA
| | | | - Jonathan Katz
- California Pacific Medical Center, University of California at San Francisco, San Francisco, CA, USA
| | - Jau-Shin Lou
- Oregon Health and Science University, Portland, OR, USA
| | - Katy Mahoney
- Department of Neurology and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Daniela Grasso
- Department of Neurology and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Robert Lawson
- Department of Neurology and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Hong Yu
- Department of Neurology and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Merit Cudkowicz
- Department of Neurology and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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Dimitrova A, Lou JS, Andrea S, Luo Y, Murchison C, Oken B. Local Effects of Acupuncture on the Median and Ulnar Nerves in Patients with Carpal Tunnel Syndrome (CTS): Study Design and Preliminary Results. J Altern Complement Med 2014. [DOI: 10.1089/acm.2014.5107.abstract] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - Jau-Shin Lou
- (1) Oregon Health & Science University, Portland, OR, USA
| | - Sarah Andrea
- (1) Oregon Health & Science University, Portland, OR, USA
| | - Yunpeng Luo
- (1) Oregon Health & Science University, Portland, OR, USA
| | | | - Barry Oken
- (1) Oregon Health & Science University, Portland, OR, USA
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Lou JS, Dimitrova DM, Hammerschlag R, Nutt J, Hunt EA, Eaton RW, Johnson SC, Davis MD, Arnold GC, Andrea SB, Oken BS. Effect of expectancy and personality on cortical excitability in Parkinson's disease. Mov Disord 2013; 28:1257-62. [PMID: 23630185 DOI: 10.1002/mds.25471] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Revised: 03/11/2013] [Accepted: 03/14/2013] [Indexed: 11/06/2022] Open
Abstract
Our previous studies in Parkinson's disease have shown that both levodopa and expectancy of receiving levodopa reduce cortical excitability. We designed this study to evaluate how degree of expectancy and other individual factors modulate placebo response in Parkinson's patients. Twenty-six Parkinson's patients were randomized to 1 of 3 groups: 0%, 50%, and 100% expectancy of receiving levodopa. All subjects received placebo regardless of expectancy group. Subjects completed the NEO-Five Factor Inventory, General Perceived Self-Efficacy Scale, and Perceived Stress Scale. Cortical excitability was measured by the amplitude of motor-evoked potential (MEP) evoked by transcranial magnetic stimulation. Objective physical fatigue of extensor carpi radialis before and after placebo levodopa was also measured. Responders were defined as subjects who responded to the placebo levodopa with a decrease in MEP. Degree of expectancy had a significant effect on MEP response (P < .05). Subjects in the 50% and 100% expectancy groups responded with a decrease in MEP, whereas those in the 0% expectancy group responded with an increase in MEP (P < .05). Responders tended to be more open to experience than nonresponders. There were no significant changes in objective physical fatigue between the expectancy groups or between responders and nonresponders. Expectancy is associated with changes in cortical excitability. Further studies are needed to examine the relationship between personality and placebo effect in Parkinson's patients. © 2013 Movement Disorder Society.
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Affiliation(s)
- Jau-Shin Lou
- Department of Neurology, Oregon Health & Science University, Portland, OR, USA.
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Wolf SL, Lou JS, Bogey R, Hayes J, Roth E, Cordo PJ. Abstract 122: AMES Treatment of Severe Hand Impairment Following Stroke. Stroke 2013. [DOI: 10.1161/str.44.suppl_1.a122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The objective of this study was to determine whether AMES (Assisted Movement with Enhanced Sensation), a novel therapeutic intervention that addresses impairments, rather than function, can reduce impairment and restore lost function in persons with a severely disabled hand. Forty-three participants with stroke (>1 yr post-injury) were provided with thirty 30-min AMES treatments over 10 weeks. Of these participants, 24 had no baseline active extension of any finger of the affected hand. Participants were randomized to 1 of 2 treatment groups differentiated by the kind of biofeedback (active torque or EMG) associated with the AMES intervention. During treatment, a robotic device cyclically opened and closed the hand (5 deg/s, ±15 deg) while the participant assisted this movement using visual biofeedback, and while vibration (60 pulses/s, 2 mm) was applied to the lengthening muscles. Participants were evaluated twice, before and after the treatment period, with the Fugl-Meyer Assessment (FMA-UE), Stroke Impact Scale (SIS), and Box-and-Block Test. In addition, during each treatment session, the AMES robot tested each participant’s strength of thumb-and-finger flexion and extension. Both torque and EMG were recorded during this Strength Test in participants assigned to the EMG-biofeedback group. The results showed overall a significant increase in the FMA-UE score (t-test, p<0.001), SIS score (t-test, p<0.05), and Box-and-Block Test score (Wilcoxon, p<0.005), without any difference between the 2 treatment groups. Four of the 24 initially plegic participants recovered the ability to move one or more blocks; however, all participants showing improvement in the Box-and-Block Test had a baseline FMA score of ≥17. Analysis of EMG during the hand-opening part of the Strength Test showed that AMES treatment of the EMG-biofeedback group significantly increased the amplitude of extensor activity (t-test, p<0.001) and decreased flexor co-contraction (t-test, p<0.05). We conclude that AMES coupled with either type of biofeedback may be effective at reducing impairment and increasing function in the severely impaired hand following stroke.
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Affiliation(s)
| | | | - Ross Bogey
- Univ Texas Southwest Med Cntr, Dallas, TX
| | | | - Elliot Roth
- Feinberg Sch of Medicine, Northwestern Univ, Chicago, IL
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Davis M, Lou JS. Management of amyotrophic lateral sclerosis (ALS) by the family nurse practitioner: A timeline for anticipated referrals. ACTA ACUST UNITED AC 2011; 23:464-72. [DOI: 10.1111/j.1745-7599.2011.00628.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
Fatigue is a common and potentially debilitating symptom of neuromuscular disease (NMD). Studies show that patients with NMD subjectively report increased levels of fatigue. Laboratory testing has demonstrated that patients with NMD show objective physiological signs of increased fatigue, with both central and peripheral components. To date, no treatment has been proven to be truly effective through evidence-based medicine. Thus, the clinician must use a multimodality approach to treating fatigue in patients with NMD. Management interventions are generally based on a sequential approach including treatment of comorbid factors, with the goal of maximizing physical and psychological functioning. This might include low-intensity exercise training, cognitive therapy, treatment of associated depression, correction of risk factors such as obesity, poor nutrition, and inactivity (deconditioning). Optimizing cardiopulmonary function is also critical and measures such as noninvasive, positive pressure ventilation may reduce fatigue in patients with NMD. Novel medications such as modafinil, a nonamphetamine stimulant, may be a helpful pharmacological treatment. Nutraceutical agents, such as creatine monohydrate, coenzyme Q10 (CoQ10), and alpha-lipoic acid, may also improve neuromuscular function and reduce fatigue.
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Affiliation(s)
- Jau-Shin Lou
- Oregon Health and Science University, Portland, USA
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Jacobs JV, Lou JS, Kraakevik JA, Horak FB. The supplementary motor area contributes to the timing of the anticipatory postural adjustment during step initiation in participants with and without Parkinson's disease. Neuroscience 2009; 164:877-85. [PMID: 19665521 PMCID: PMC2762010 DOI: 10.1016/j.neuroscience.2009.08.002] [Citation(s) in RCA: 164] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2009] [Revised: 07/17/2009] [Accepted: 08/03/2009] [Indexed: 11/22/2022]
Abstract
The supplementary motor area (SMA) is thought to contribute to the generation of anticipatory postural adjustments (APAs, which act to stabilize supporting body segments prior to movement), but its precise role remains unclear. In addition, participants with Parkinson's disease (PD) exhibit impaired function of the SMA as well as decreased amplitudes and altered timing of the APA during step initiation, but the contribution of the SMA to these impairments also remains unclear. To determine how the SMA contributes to generating the APA and to the impaired APAs of participants with PD, we examined the voluntary steps of eight participants with PD and eight participants without PD, before and after disrupting the SMA and dorsolateral premotor cortex (dlPMC), in separate sessions, with 1-Hz repetitive transcranial magnetic stimulation (rTMS). Both groups exhibited decreased durations of their APAs after rTMS over the SMA but not over the dlPMC. Peak amplitudes of the APAs were unaffected by rTMS to either site. The symptom severity of the participants with PD positively correlated with the extent that rTMS over the SMA affected the durations of their APAs. The results suggest that the SMA contributes to the timing of the APA and that participants with PD exhibit impaired timing of their APAs, in part, due to progressive dysfunction of circuits associated with the SMA.
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Affiliation(s)
- J V Jacobs
- Department of Rehabilitation and Movement Science, University of Vermont, Burlington, VT, USA.
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Anderson VC, Burchiel KJ, Hart MJ, Berk C, Lou JS. A randomized comparison of thalamic stimulation and lesion on self-paced finger movement in essential tremor. Neurosci Lett 2009; 462:166-70. [DOI: 10.1016/j.neulet.2009.07.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2009] [Revised: 06/11/2009] [Accepted: 07/02/2009] [Indexed: 11/27/2022]
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Fried-Oken M, Fox L, Rau MT, Tullman J, Baker G, Hindal M, Wile N, Lou JS. Purposes of AAC device use for persons with ALS as reported by caregivers. Augment Altern Commun 2009; 22:209-21. [PMID: 17114164 DOI: 10.1080/07434610600650276] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
Thirty-four informal caregivers who support 26 persons with ALS reported on AAC technology use. Each caregiver completed the Communication Device Use Checklist, a survey tool developed for this study based on Light's (1988) classification of the purposes of social interaction (Augmentative and Alternative Communication, 4, 66-82). The checklist includes 17 purposes of communication and asks participants to judge importance, mode, and frequency of use for each purpose. Results show that the three communication purposes used most frequently and valued as important by caregivers involve regulating the behavior of others for basic needs and wants (getting needs met; giving instructions or directions to others; and clarifying needs). Consistent reports of use and frequency for the purposes of staying connected (social closeness) and discussing important issues (information transfer) indicate that AAC technology can assist the dyad in maintaining previous relationships. The face-to-face spontaneous conversation mode is used most frequently, despite the slow rate of production, the lack of permanence, and the demands on conversational partners during message generation. Clinical and research implications are discussed.
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Affiliation(s)
- Melanie Fried-Oken
- Oregon Health & Science University, Oregon Institute on Disability and Development, P.O. Box 574, Portland, OR 97207, USA.
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Abstract
Fatigue is one of the most common non-motor complaints of Parkinson's disease (PD) patients and is associated with reduced activity and poorer quality of life. Fatigue can be experienced as a state of being tired or weary (subjective fatigue) or as a process of becoming tired or fatigued (fatigability). Subjective mental and physical fatigue are evaluated using self-report questionnaires such as the Multidimensional Fatigue Inventory. Physical fatigability is studied in a laboratory setting using physical exercise protocols and transcranial magnetic stimulation. Mental fatigability is evaluated by measuring attention over time using a reaction-time paradigm called the Attention Network Test (ANT). PD patients report more subjective physical and mental fatigue than controls on a variety of fatigue questionnaires. PD patients have increased physical fatigability in force generation and finger tapping. Levodopa and modafinil improve physical fatigability in PD subjects. Methylphenidate is useful for treating subjective physical fatigue. PD subjects have greater mental fatigability than control subjects and display abnormal performance in all three attention networks in the ANT. Therapies targeting the neurotransmitter systems involved in attention may be helpful for treating mental fatigability. Future fatigue research should focus on developing gold standards for fatigue measurement and developing treatments for fatigue and fatigability in PD.
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Affiliation(s)
- Jau-Shin Lou
- Oregon Health & Science University, Portland, Oregon, USA.
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Rosenfeld J, King RM, Jackson CE, Bedlack RS, Barohn RJ, Dick A, Phillips LH, Chapin J, Gelinas DF, Lou JS. Creatine monohydrate in ALS: effects on strength, fatigue, respiratory status and ALSFRS. ACTA ACUST UNITED AC 2008; 9:266-72. [PMID: 18608103 PMCID: PMC2631354 DOI: 10.1080/17482960802028890] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Our objective was to determine the effect of creatine monohydrate on disease progression in patients with amyotrophic lateral sclerosis (ALS). One hundred and seven patients with the diagnosis of probable or definite ALS, of less than five years duration from symptom onset, were randomized to either treatment with daily creatine monohydrate (5 g/d) or placebo. In this multicenter, double-blinded study we followed changes in disease progression: using quantitative measures of strength via maximal isometric voluntary contraction, forced vital capacity, ALSFRS, quality of life, fatigue and survival. Patients were followed for nine months. The results showed that creatine monohydrate did not significantly improve motor, respiratory or functional capacity in this patient population. The drug was well tolerated and the study groups well balanced, especially considering the absence of forced vital capacity criteria for entrance into the study. There was a trend toward improved survival in patients taking daily creatine monohydrate and this was identical to the trend seen in another recently published report of creatine in ALS patients . In conclusion, creatine monohydrate (5 g/d) did not have an obvious benefit on the multiple markers of disease progression measured over nine months. We measured fatigue during isometric contraction and found no significant improvement despite anecdotal patient reports prior to and during the study. The trend toward improved survival was also found in another recently completed blinded trial using creatine monohydrate. Further investigation on the possible survival benefit of creatine in this patient population is ongoing.
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Affiliation(s)
- Jeffrey Rosenfeld
- The Carolinas Neuromuscular/ALS Center, Charlotte North Carolina, Carolinas Medical Center, USA
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Gordon PH, Cheung YK, Levin B, Andrews H, Doorish C, Macarthur RB, Montes J, Bednarz K, Florence J, Rowin J, Boylan K, Mozaffar T, Tandan R, Mitsumoto H, Kelvin EA, Chapin J, Bedlack R, Rivner M, McCluskey LF, Pestronk A, Graves M, Sorenson EJ, Barohn RJ, Belsh JM, Lou JS, Levine T, Saperstein D, Miller RG, Scelsa SN. A novel, efficient, randomized selection trial comparing combinations of drug therapy for ALS. ACTA ACUST UNITED AC 2008; 9:212-22. [PMID: 18608093 DOI: 10.1080/17482960802195632] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Combining agents with different mechanisms of action may be necessary for meaningful results in treating ALS. The combinations of minocycline-creatine and celecoxib-creatine have additive effects in the murine model. New trial designs are needed to efficiently screen the growing number of potential neuroprotective agents. Our objective was to assess two drug combinations in ALS using a novel phase II trial design. We conducted a randomized, double-blind selection trial in sequential pools of 60 patients. Participants received minocycline (100 mg)-creatine (10 g) twice daily or celecoxib (400 mg)-creatine (10 g) twice daily for six months. The primary objective was treatment selection based on which combination best slowed deterioration in the ALS Functional Rating Scale-Revised (ALSFRS-R); the trial could be stopped after one pool if the difference between the two arms was adequately large. At trial conclusion, each arm was compared to a historical control group in a futility analysis. Safety measures were also examined. After the first patient pool, the mean six-month decline in ALSFRS-R was 5.27 (SD=5.54) in the celecoxib-creatine group and 6.47 (SD=9.14) in the minocycline-creatine group. The corresponding decline was 5.82 (SD=6.77) in the historical controls. The difference between the two sample means exceeded the stopping criterion. The null hypothesis of superiority was not rejected in the futility analysis. Skin rash occurred more frequently in the celecoxib-creatine group. In conclusion, the celecoxib-creatine combination was selected as preferable to the minocycline-creatine combination for further evaluation. This phase II design was efficient, leading to treatment selection after just 60 patients, and can be used in other phase II trials to assess different agents.
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Affiliation(s)
- Paul H Gordon
- Department of Neurology, Columbia University, New York, USA.
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Gregory WT, Lou JS, Simmons K, Clark AL. Quantitative anal sphincter electromyography in primiparous women with anal incontinence. Am J Obstet Gynecol 2008; 198:550.e1-6. [PMID: 18455531 PMCID: PMC2847879 DOI: 10.1016/j.ajog.2008.01.053] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2007] [Revised: 11/16/2007] [Accepted: 01/24/2008] [Indexed: 12/15/2022]
Abstract
OBJECTIVE The purpose of this study was to determine whether evidence of denervation/reinnervation of the external anal sphincter is associated with anal incontinence symptoms immediately after delivery. STUDY DESIGN After a first vaginal delivery, 42 women completed an anal incontinence questionnaire. They also underwent concentric needle electromyography of the external anal sphincter. For each subject, motor unit action potential and interference pattern parameters were determined. RESULTS For the motor unit action potential, no difference was observed between patients with and without anal incontinence symptoms (t-test). For the interference pattern, the amplitude/turn was greater in subjects with fecal urgency (318 +/- 48 [SD] microV) and fecal incontinence (332 +/- 48 microV), compared with those without fecal urgency (282 +/- 38 microV) and fecal incontinence (286 +/- 41 microV; P = .02, t-test). CONCLUSION In this group of postpartum women with mild anal incontinence symptoms, interference pattern analysis shows evidence of denervation and subsequent reinnervation.
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Affiliation(s)
- W Thomas Gregory
- Division of Urogynecology and Reconstructive Pelvic Surgery, Department of Obstetrics and Gynecology, Oregon Health and Science University, Portland, OR, USA
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Gregory WT, Clark AL, Simmons K, Lou JS. Determining the shape of the turns-amplitude cloud during anal sphincter quantitative EMG. Int Urogynecol J 2008; 19:971-6. [PMID: 18250946 DOI: 10.1007/s00192-008-0562-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2007] [Accepted: 01/07/2008] [Indexed: 10/22/2022]
Abstract
We aimed to compare our normative data for quantitative interference pattern (IP) analysis of the anal sphincter to previously published data. In 28 nulliparous women, we performed IP analysis during quantitative concentric needle electromyography (QEMG) of the anal sphincter. At each sampling site, a 500-ms epoch was analyzed. The data were log transformed. Linear regression lines (with 95% confidence intervals) were calculated from the log transformed variables "turns-second" and "amplitude-turn." These confidence intervals were then transformed back into the original parameters to yield scatterplots with confidence curves. The mean turns-second were 203 (SD 174). The mean amplitude (mcv)-turn was 266 (SD 87). The regression coefficients for the log-transformed variables are constant = 1.5, slope = 0.3, and resultant cloud of raw data has a convex upper boundary. These appear slightly different than previously published reports, potentially influencing the determination of normal and abnormal studies.
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Affiliation(s)
- W Thomas Gregory
- Division of Urogynecology and Reconstructive Pelvic Surgery, Department of Obstetrics and Gynecology, Oregon Health and Science University, Portland, OR 97239, USA.
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Benice TS, Lou JS, Eaton R, Nutt J. Hand coordination as a quantitative measure of motor abnormality and therapeutic response in Parkinson's disease. Clin Neurophysiol 2007; 118:1776-84. [PMID: 17576094 DOI: 10.1016/j.clinph.2007.05.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2007] [Revised: 05/01/2007] [Accepted: 05/06/2007] [Indexed: 10/23/2022]
Abstract
OBJECTIVE The precision grip-and-lift task (PGLT) has been used to measure hand motor coordination in PD. We designed this study to investigate if the PGLT outcome variables correlate with the UPDRS motor scores and if all PGLT outcome variables are "responsive" to levodopa. METHODS We used PGLT to assess hand motor coordination in 10 PD and 10 normal controls before and after levodopa. RESULTS Factor analysis showed that the six PGLT parameters were reduced to two factors, a levodopa-responsive factor and a dopa-resistant factor that explained 74% of the total variance. The levodopa-responsive factor, which correlated significantly with "off" UPDRS motor scores, includes load preparation time, maximum vertical acceleration, maximum grip velocity and maximum grip force. The levodopa-resistant factor, which did not correlate with "off" UPDRS motor scores, included maximum negative load force and tremor during lift. Both dopa-responsive and dopa-resistant factors were altered in PD compared to controls before levodopa. Levodopa improved dopa-responsive, but not dopa-resistant factor in PD. CONCLUSIONS PGLT can measure two aspects of fine motor performance, both affected by PD but differentially affected by levodopa. SIGNIFICANCE PGLT can be useful in characterizing the response of motor abnormality in PD therapeutic trials.
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Affiliation(s)
- Ted S Benice
- Department of Neurology, CR-120, Oregon Health and Science University, 3181 SW Sam Jackson Park Road, Portland, OR, United States
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Friedman JH, Brown RG, Comella C, Garber CE, Krupp LB, Lou JS, Marsh L, Nail L, Shulman L, Taylor CB. Fatigue in Parkinson's disease: a review. Mov Disord 2007; 22:297-308. [PMID: 17133511 DOI: 10.1002/mds.21240] [Citation(s) in RCA: 214] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Fatigue is a common problem in Parkinson's disease (PD), often the most troubling of all symptoms. It is poorly understood, generally under-recognized, and has no known treatment. This article reviews what is known about the symptom, putting it into the context of fatigue in other disorders, and outlines a program for developing better understanding and therapy.
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Silbert L, Nelson K, Oken B, Lou JS, Kaye JA. P1–145: Slower transcallosal conduction time is associated with degenerative volumetric change on MRI and poorer performance on tests of cognitive processing in elderly at risk for dementia. Alzheimers Dement 2006. [DOI: 10.1016/j.jalz.2006.05.521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Silbert LC, Nelson C, Holman S, Eaton R, Oken BS, Lou JS, Kaye JA. Cortical excitability and age-related volumetric MRI changes. Clin Neurophysiol 2006; 117:1029-36. [PMID: 16564739 DOI: 10.1016/j.clinph.2006.02.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2005] [Revised: 01/27/2006] [Accepted: 02/04/2006] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Normative data on transcranial magnetic stimulation (TMS)-derived measures of cortical excitability in the elderly is sparse. Nevertheless, elderly subjects are included as controls in studies utilizing TMS to investigate disease states. Age-associated increased ventricular cerebrospinal fluid CSF (vCSF) and white matter hyperintensity (WMH) MRI volumes have uncertain significance in non-demented elderly. Information regarding cortical excitability in neurologically intact elderly would augment our understanding of the pathophysiology of aging and assist in the interpretation of TMS studies involving elderly subjects. METHODS Twenty-four healthy elderly subjects underwent TMS testing to determine outcomes of resting motor threshold (RMT) cortical silent period (cSP) and central motor conduction time for examination in relation to WMH, vCSF, and CNS volumes. RESULTS Increased vCSF and WMH volumes were associated with decreased right and left hemisphere RMT. Smaller CNS volumes were associated with decreased right hemisphere RMT and shorted cSP. CONCLUSIONS Commonly observed age-associated MRI changes are associated with findings consistent with increased cortical excitability. SIGNIFICANCE Age-related MRI findings likely reflect changes at a cellular level, and may influence cognitive and motor integrity in the elderly. Future TMS studies investigating cortical excitability may wish to consider neuroimaging markers of neurodegeneration prior to enrolling elderly subjects as controls.
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Affiliation(s)
- L C Silbert
- Department of Neurology, Layton Aging and Alzheimer's Disease Center, Oregon Health and Science University, Portland, OR 97201, USA.
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Affiliation(s)
- Jau-Shin Lou
- MDA Clinic, ALS Center of Oregon, EMG Laboratory, and Department of Neurology, CR120, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97234, USA.
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Leis BC, Rand MK, Van Gemmert AWA, Longstaff MG, Lou JS, Stelmach GE. Movement precues in planning and execution of aiming movements in Parkinson's disease. Exp Neurol 2005; 194:393-409. [PMID: 16022867 DOI: 10.1016/j.expneurol.2005.02.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2004] [Revised: 02/24/2005] [Accepted: 02/24/2005] [Indexed: 11/23/2022]
Abstract
Two experiments tested how changing a planned movement affects movement initiation and execution in idiopathic Parkinson's disease (PD) patients. In Experiment 1, PD patients, elderly controls, and young adults performed discrete aiming movements to one of two targets on a digitizer. A precue (80% valid cue and 20% invalid cue of all trials) reflecting the subsequent movement direction was presented prior to the imperative stimulus. All groups produced slower reaction times (RTs) to the invalid precue condition. Only the subgroup of patients with slowest movement time showed a significant prolongation of movement for the invalid condition. This suggests that, in the most impaired patients, modifying a planned action also affects movement execution. In Experiment 2, two-segment aiming movements were used to increase the demand on movement planning. PD patients and elderly controls underwent the two precue conditions (80% valid, 20% invalid). Patients exhibited longer RTs than the controls. RT was similarly increased for the invalid condition in both groups. The patients, however, exhibited longer movement times, lower peak velocities, and higher normalized jerk scores of the first segment in the invalid condition compared to the valid condition. Conversely, the controls showed no difference between the valid and invalid cue conditions. Thus, PD patients demonstrated substantially pronounced movement slowness and variability when required to change a planned action. The results from both experiments suggest that modifying a planned action may continue beyond the initiation phase into the execution phase in PD patients.
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Affiliation(s)
- B C Leis
- Department of Kinesiology, Motor Control Laboratory, Arizona State University, Box 870404, Tempe, AZ 85287-0404, USA
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Gregory WT, Clark AL, Johnson J, Willis K, Stuyvesant A, Lou JS. Anal sphincter electromyography: editing of sampled motor unit action potentials. Muscle Nerve 2005; 31:256-9. [PMID: 15468053 DOI: 10.1002/mus.20165] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
During multi-motor unit action potential (MUAP) analysis of the tonically contracted external anal sphincter (EAS), a mild interference pattern often obscures the baseline, affecting the algorithm's ability to determine accurate boundaries of detected MUAPs. To assess the equivalence of methods of editing and selecting candidate MUAPs from the EAS, 17 nulliparous women underwent concentric needle electromyography (EMG) of the EAS using multi-MUAP software. The selected MUAPs either were accepted without question ("automated"), or a subset was deleted due to a noisy baseline ("manual-deletion") or manually marked ("manual-mark"). A second examiner repeated the analysis. Each examiner found that the two editing methods were equivalent and yielded results that differed from those obtained by automated analysis of unedited data. However, there was a moderate difference in MUAP amplitude when the manual-deletion method was compared between the two examiners. Editing of selected EAS MUAPs during multi-MUAP analysis is required, and development of common protocols is essential to enable meaningful comparisons between similar studies.
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Affiliation(s)
- W Thomas Gregory
- Department of Obstetrics and Gynecology, Oregon Health and Science University, Mail code L466, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA.
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Abstract
OBJECTIVE Fecal incontinence in women is thought to be associated with sphincter laceration or pudendal nerve damage. A prolonged pudendal nerve terminal motor latency is evidence of profound nerve damage, but pudendal nerve terminal motor latency can be normal even when nerve injury has been sustained. We performed quantitative electromyography (EMG) to compare multiple motor unit action potential parameters between recently postpartum women and nulliparous women. METHODS Standardized examinations were prospectively performed on 2 groups: 1) healthy nulliparous women without pelvic floor disorders (n = 28) and 2) asymptomatic women who were postpartum following vaginal delivery of their first child (n = 23). The examinations included pelvic organ prolapse quantification measurements, endoanal ultrasonography, pudendal nerve terminal motor latency, sacral reflexes, and concentric needle EMG using multiple motor unit action potential analysis. RESULTS A mean of 11.5 (standard deviation [sd] 1.1) weeks had elapsed since first vaginal deliveries in the postpartum group. The mean fetal weight at delivery was 3,495 (sd 458) grams. There were no sphincter defects seen by ultrasonography. Compared with the nulliparous women, pudendal nerve terminal motor latency and sacral reflexes (clitoral-anal reflex, urethral-anal reflex) were not increased in the postpartum group. Each of the quantitative parameters (duration, amplitude, area, turns, and phases), measured from motor unit action potentials in the postpartum group, were larger than in the nulliparous group (P < or =.004, nested analysis of variance [ANOVA]). CONCLUSION Quantitative EMG using multiple motor unit action potential analysis can detect the presence after vaginal childbirth of subtle nerve injury not demonstrable by pudendal nerve terminal motor latency. Even asymptomatic women show evidence of pelvic floor nerve injury after uncomplicated deliveries.
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Affiliation(s)
- W Thomas Gregory
- Division of Urogynecology and Reconstructive Pelvic Surgery and Department of Neurology, Oregon Health and Science University, Portland, Oregon 97239, USA.
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Lou JS, Kearns G, Benice T, Oken B, Sexton G, Nutt J. Levodopa improves physical fatigue in Parkinson's disease: A double-blind, placebo-controlled, crossover study. Mov Disord 2003; 18:1108-14. [PMID: 14534913 DOI: 10.1002/mds.10505] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
We quantitatively investigated the effect of carbidopa/levodopa (25/100) on physical fatigue during finger tapping and force generation in a double-blind, placebo-controlled crossover study. Parkinson's disease (PD) subjects were randomly assigned to carbidopa/levodopa or placebo for Visit 1 or 2 and participated in the following two studies: (1) Finger tapping. Twenty-five PD patients used their index fingers to strike two keys 20 cm apart on a musical instrument digital interface (MIDI) keyboard. The slopes of the regression line of dwell time and movement time were used to assess the rate of fatigue development. (2) Force generation. Twelve PD patients contracted the wrist extensors maximally to obtain a baseline maximum voluntary contraction (BMVC) force. Then they repetitively contracted the wrist extensors at 50% of the BMVC for 7 seconds and rested for 3 seconds. An interval maximum voluntary contraction (IMVC) was measured every three repetitions. Fatigue was defined as an IMVC of less than 60% of the BMVC. The slope of the regression line of IMVC was used to assess the rate of force decline. These two studies were repeated 1 hour after carbidopa/levodopa (25/100) or placebo. Subjects filled out the Multidimensional Fatigue Inventory (MFI) at the beginning of the first visit. Results showed that the slope of dwell time decreased with levodopa but not with placebo (P = 0.004). The rate of force decline also decreased with levodopa but not with placebo (P = 0.01). The subscores in the dimension of physical fatigue in the MFI did not correlate with the rate changes in dwell time or the rate changes in force decline. We concluded that (1) levodopa improves physical fatigue in finger tapping and force generation, (2) physical fatigue in Parkinson's disease is at least partially related to dopamine deficiency, and (3) the MFI measures different aspects of physical fatigue compared with those measured by finger tapping and force generation.
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Affiliation(s)
- Jau-Shin Lou
- Department of Neurology, Oregon Health & Science University, Portland, Oregon 97239, USA.
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Lou JS, Benice T, Kearns G, Sexton G, Nutt J. Levodopa normalizes exercise related cortico-motoneuron excitability abnormalities in Parkinson's disease. Clin Neurophysiol 2003; 114:930-7. [PMID: 12738440 DOI: 10.1016/s1388-2457(03)00040-3] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
OBJECTIVES To measure exercise induced changes in cortico-motoneuron excitability in Parkinson's disease (PD) before and after levodopa. METHODS Transcranial magnetic stimulation was delivered at 10% above resting motor threshold in 9 PD and 8 control subjects. Each subject performed repetitive isometric wrist extension at 50% of the baseline maximal voluntary contraction (MVC) for 30s with 3s rest between extensions until fatigued, defined as the inability to generate force at more than 25% of the baseline MVC. We recorded motor evoked potentials (MEPs) from the resting extensor carpi radialis muscle before (baseline), during, and after fatiguing exercise. Baseline electromyographic activity was closely monitored. We compared absolute MEP amplitudes between PD and controls, before and after levodopa, during baseline, exercise, and recovery periods. We correlated absolute MEP amplitudes with an objective measure of fatigability. RESULTS PD subjects in the "off" state had increased absolute MEP amplitudes compared with controls. The effect was present in all 3 exercise periods. These differences disappeared after levodopa. Post-exercise facilitation was clear for PD subjects before and after levodopa, but post-exercise depression was not significant. Absolute MEP amplitude showed negative correlation with objective fatigability for PD subjects before levodopa. CONCLUSIONS Levodopa normalized the increased cortico-motoneuron excitability in PD patients before, during, and after fatiguing exercise. SIGNIFICANCE This study demonstrated the abnormal cortico-motoneuron excitability associated with motor fatigue in PD.
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Affiliation(s)
- Jau-Shin Lou
- Department of Neurology, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Mail Code CR120, Portland 97201, USA.
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Abstract
Twenty-five ALS subjects filled out five questionnaires: the ALS Functional Rating Scale, Multidimensional Fatigue Inventory, multidimensional McGill Quality of Life, Center of Epidemiologic Study--Depression Scale, and the Epworth Sleepiness Scale. Fatigue, depression, and excessive somnolence are more pronounced in ALS subjects than in normal controls. Both fatigue and depression are associated with poorer quality of life in subjects with ALS, and should be treated aggressively.
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Affiliation(s)
- Jau-Shin Lou
- Department of Neurology, Oregon Health & Science University, Portland 97201, USA.
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Zhu ZT, Li HQ, Lu Y, Lou JS, Yao Z. [Inhibitive effect of puerarin on increased NO production by neonatal cardiomyocytes during hypoxia/reoxygenation injury]. Zhongguo Zhong Yao Za Zhi 2001; 26:856-9. [PMID: 12776339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
OBJECTIVE To investigate the effect of puerarin (Pue) on nitric oxide (NO) produced by neonatal rat cardiomyocytes during hypoxia/reoxygenation injury. METHOD NO contents in the culture supernatants sampled from different groups (control, model, and therapeutic groups with 1, 0.1, 0.01 g.L-1 Pue) at different time were assayed with nitrate reductase method. RESULT NO content of model increased after reperfusion (P < 0.01), while it increased sharply at 6 h after reperfusion and kept thereafter. Only at 6 h after reperfusion did Pue in these three doses inhibit NO production (P < 0.01) and kept to the 24 h after reperfusion. CONCLUSION Pue exerts inhibitive effect only after NO production is enhanced sharply during hypoxia/reperfusion injury in a dose-dependent trend.
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Affiliation(s)
- Z T Zhu
- Tianjin Medical University, Tianjin 300203, China
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Abstract
OBJECTIVE To characterize fatigue in Parkinson's disease (PD). BACKGROUND Fatigue is a recognized problem in PD. Fatigue can be in the physical realm or in the mental realm. Fatigue has not been characterized in PD. METHODS We characterized fatigue in 39 PD patients and 32 age-matched normal controls using five questionnaires: A. The Multidimensional Fatigue Inventory (MFI), which measures five dimensions of fatigue independently including general fatigue, physical fatigue, reduced motivation, reduced activity, and mental fatigue. B. The Fatigue Severity Inventory (FSI), which quantifies fatigue in general. C. The Profile of Mood States (POMS), which assesses six subjective subscales: tension-anxiety, depression-dejection, anger-hostility, fatigue-inertia, vigor-activity, and confusion-bewilderment. D. Center for Epidemiological Studies-Depression Scale (CES-D). E. Visual Analog linear scale of energy (VA-E). RESULTS PD patients scored higher in all of the five dimensions of fatigue in the MFI including general fatigue, physical fatigue, reduced motivation, reduced activity, and mental fatigue (P < 0.001 except for mental fatigue P = 0.005). The severity of physical fatigue did not correlate with that of mental fatigue. PD patients scored higher on the FSI, POMS, CES-D, and scored lower on the VA-E. The scores in the FSI correlated with general fatigue, physical fatigue, reduced activity, and reduced motivation but not with mental fatigue in the MFI. Depression correlated with all dimensions of fatigue except physical fatigue in the MFI. Disease severity, as measured by Modified Hoehn and Yahr staging, did not correlate with any of the measures. CONCLUSIONS PD patients have increased physical fatigue and mental fatigue compared to normals. Physical fatigue and mental fatigue are independent symptoms in PD that need to be assessed and treated separately.
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Affiliation(s)
- J S Lou
- Department of Neurology, Oregon Health Sciences University, Portland, Oregon 97201, USA.
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Affiliation(s)
- A G Vadasz
- Department of Neurology, University of Rochester, New York 14642, USA
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Gatev P, Thomas S, Lou JS, Lim M, Hallett M. Effects of diminished and conflicting sensory information on balance in patients with cerebellar deficits. Mov Disord 1996; 11:654-64. [PMID: 8914091 DOI: 10.1002/mds.870110610] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
We studied the effects of altered sensory information on standing balance in 25 patients with cortical cerebellar atrophy (CCA), nine patients with olivoponto-cerebellar atrophy (OPCA), and 10 normal subjects. The total sway path and its components, the anteroposterior (AP) sway path and the lateral sway path, were measured under six conditions: (1) standing on a fixed platform with the eyes open and visual surroundings fixed, (2) standing on a fixed platform with the eyes closed, (3) standing on a fixed platform with the eyes open and visual surroundings AP sway referenced, (4) standing on an AP sway-referenced platform with the eyes open and visual surroundings fixed, (5) standing on an AP sway-referenced platform with the eyes closed, and (6) standing on an AP sway-referenced platform with the eyes open and visual surroundings AP sway referenced. Patients swayed more than normal subjects during normal stance (condition 1), when the visual information was absent (condition 2) or distorted (condition 3), and when the proprioceptive information from the ankles was distorted (condition 4). Patients swayed much more than normal, and most fell, when two sensory modalities were affected under condition 5 (proprioceptive information distorted and visual information absent) and condition 6 (both proprioceptive information and visual information distorted). When the patients' sway was normalized to that of the first condition, however, only their lateral sway was greater than the sway in normal subjects. Unlike in normal subjects, the patients' lateral sway varied with the AP sway to approximately the same degree in each condition for conditions 1-5. Clinical ratings of gait and balance were highly correlated with the sway measures. Quantitative testing of standing balance with altered sensory information has better sensitivity than normal stance testing.
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Affiliation(s)
- P Gatev
- Human Motor Control Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland 20892-1428, USA
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Lou JS. Pediatric clinical electromyography.Editors: H. Royden Jones, Jr., MD, Charles F. Bolton, MD, and C. Michel Harper, Jr., MD Publisher: Lippincott-Raven Publishers, Philadelphia, PA 19106-3380, 1995, 512 pp., $98.00. Muscle Nerve 1996. [DOI: 10.1002/mus.880191004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Dimitrov M, Grafman J, Kosseff P, Wachs J, Alway D, Higgins J, Litvan I, Lou JS, Hallett M. Preserved cognitive processes in cerebellar degeneration. Behav Brain Res 1996; 79:131-5. [PMID: 8883824 DOI: 10.1016/0166-4328(96)00007-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Aspects of cognitive processing in patients with cerebellar degeneration (CD) were studied in order to examine the validity of recent findings that CD patients demonstrate deficits in visuospatial cognition and verbal-associative learning. Two groups of patients with CD were compared to stratified matched control groups on tests examining selective visual attention, visual spatial attention, mental rotation of geometric designs, and memory for the temporal order of words they were previously exposed to. CD patients performed similarly to their matched controls across all tasks. These results indicate that the reported cognitive deficits of CD patients are quite selective and need further specification in order to more fully describe their relationship to cerebellar dysfunction.
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Affiliation(s)
- M Dimitrov
- Cognitive Neuroscience Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892-1440, USA
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Abstract
OBJECTIVE To evaluate the efficacy of buspirone hydrochloride, a serotonin (5-hydroxytryptamine1A) agonist, in treating patients with cerebellar ataxia. DESIGN Open-label study in which 20 patients (14 with cerebellar cortical atrophy and six with olivopontocerebellar atrophy) received buspirone hydrochloride, up to 60 mg/d, for 8 weeks. SETTING Research hospital. MAIN OUTCOME MEASURES Clinical, physiological, and psychological assessment. RESULTS Nine patients with mild or moderate cerebellar dysfunction who completed the study showed significant improvement in clinical and self-assessment ratings, but not in a motor performance test, posturography (data were incomplete), State-Trait Anxiety Inventory, and Beck Depression Inventory. Seven patients with severe cerebellar dysfunction who completed the study had no improvement on any measure. CONCLUSIONS Buspirone may be effective in treating mild to moderate cerebellar ataxia. A double-blind study of the efficacy of buspirone in cerebellar ataxia is warranted.
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Affiliation(s)
- J S Lou
- Human Motor Control Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Md, USA
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