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Beswick E, Christides A, Symonds A, Johnson M, Fawcett T, Newton J, Lyle D, Weaver C, Chandran S, Pal S. Exploratory study to evaluate the acceptability of a wearable accelerometer to assess motor progression in motor neuron disease. J Neurol 2024:10.1007/s00415-024-12449-3. [PMID: 38805054 DOI: 10.1007/s00415-024-12449-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 05/10/2024] [Accepted: 05/14/2024] [Indexed: 05/29/2024]
Abstract
Motor neuron disease (MND) is a rapidly progressive condition traditionally assessed using a questionnaire to evaluate physical function, the revised amyotrophic lateral sclerosis functional rating scale (ALSFRS-R). Its use can be associated with poor sensitivity in detecting subtle changes over time and there is an urgent need for more sensitive and specific outcome measures. The ActiGraph GT9X is a wearable device containing multiple sensors that can be used to provide metrics that represent physical activity. The primary aim of this study was to investigate the initial suitability and acceptability of limb-worn wearable devices to group of people with MND in Scotland. A secondary aim was to explore the preliminary associations between the accelerometer sensor data within the ActiGraph GT9X and established measures of physical function. 10 participants with MND completed a 12-week schedule of assessments including fortnightly study visits, both in-person and over videoconferencing software. Participants wore the device on their right wrist and right ankle for a series of movements, during a 6-min walking test and for a period of 24-h wear, including overnight. Participants also completed an ALSFRS-R and questionnaires on their experience with the devices. 80% of the participants found wearing these devices to be a positive experience and no one reported interference with daily living or added burden. However, 30% of the participants experienced technical issues with their devices. Data from the wearable devices correlated with established measures of physical function.
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Affiliation(s)
- Emily Beswick
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, Scotland
- Anne Rowling Regenerative Neurology Clinic, The University of Edinburgh, 49 Little France Crescent, Edinburgh, EH16 4SB, UK
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, Scotland
| | - Alexander Christides
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, Scotland
- Anne Rowling Regenerative Neurology Clinic, The University of Edinburgh, 49 Little France Crescent, Edinburgh, EH16 4SB, UK
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, Scotland
| | - Alexander Symonds
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, Scotland
- Anne Rowling Regenerative Neurology Clinic, The University of Edinburgh, 49 Little France Crescent, Edinburgh, EH16 4SB, UK
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, Scotland
| | - Micheaela Johnson
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, Scotland
- Anne Rowling Regenerative Neurology Clinic, The University of Edinburgh, 49 Little France Crescent, Edinburgh, EH16 4SB, UK
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, Scotland
| | - Thomas Fawcett
- The School of Medicine and Veterinary Medicine, The University of Edinburgh, Edinburgh, Scotland
| | - Judith Newton
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, Scotland
- Anne Rowling Regenerative Neurology Clinic, The University of Edinburgh, 49 Little France Crescent, Edinburgh, EH16 4SB, UK
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, Scotland
| | - Dawn Lyle
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, Scotland
- Anne Rowling Regenerative Neurology Clinic, The University of Edinburgh, 49 Little France Crescent, Edinburgh, EH16 4SB, UK
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, Scotland
| | - Christine Weaver
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, Scotland
- Anne Rowling Regenerative Neurology Clinic, The University of Edinburgh, 49 Little France Crescent, Edinburgh, EH16 4SB, UK
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, Scotland
| | - Siddharthan Chandran
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, Scotland
- Anne Rowling Regenerative Neurology Clinic, The University of Edinburgh, 49 Little France Crescent, Edinburgh, EH16 4SB, UK
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, Scotland
- UK Dementia Research Institute, The University of Edinburgh, Edinburgh, Scotland
| | - Suvankar Pal
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, Scotland.
- Anne Rowling Regenerative Neurology Clinic, The University of Edinburgh, 49 Little France Crescent, Edinburgh, EH16 4SB, UK.
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, Scotland.
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Dunn E, Steinert JR, Stone A, Sahota V, Williams RSB, Snowden S, Augustin H. Medium-Chain Fatty Acids Rescue Motor Function and Neuromuscular Junction Degeneration in a Drosophila Model of Amyotrophic Lateral Sclerosis. Cells 2023; 12:2163. [PMID: 37681895 PMCID: PMC10486503 DOI: 10.3390/cells12172163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/21/2023] [Accepted: 08/22/2023] [Indexed: 09/09/2023] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is an adult-onset neurodegenerative disease characterised by progressive degeneration of the motor neurones. An expanded GGGGCC (G4C2) hexanucleotide repeat in C9orf72 is the most common genetic cause of ALS and frontotemporal dementia (FTD); therefore, the resulting disease is known as C9ALS/FTD. Here, we employ a Drosophila melanogaster model of C9ALS/FTD (C9 model) to investigate a role for specific medium-chain fatty acids (MCFAs) in reversing pathogenic outcomes. Drosophila larvae overexpressing the ALS-associated dipeptide repeats (DPRs) in the nervous system exhibit reduced motor function and neuromuscular junction (NMJ) defects. We show that two MCFAs, nonanoic acid (NA) and 4-methyloctanoic acid (4-MOA), can ameliorate impaired motor function in C9 larvae and improve NMJ degeneration, although their mechanisms of action are not identical. NA modified postsynaptic glutamate receptor density, whereas 4-MOA restored defects in the presynaptic vesicular release. We also demonstrate the effects of NA and 4-MOA on metabolism in C9 larvae and implicate various metabolic pathways as dysregulated in our ALS model. Our findings pave the way to identifying novel therapeutic targets and potential treatments for ALS.
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Affiliation(s)
- Ella Dunn
- Centre for Biomedical Sciences, Department of Biological Sciences, Royal Holloway University of London, Egham, Surrey TW20 OEX, UK; (E.D.); (R.S.B.W.)
| | - Joern R. Steinert
- Faculty of Medicine & Health Sciences, Queen’s Medical Centre, Nottingham NG7 2UH, UK; (J.R.S.); (A.S.)
| | - Aelfwin Stone
- Faculty of Medicine & Health Sciences, Queen’s Medical Centre, Nottingham NG7 2UH, UK; (J.R.S.); (A.S.)
| | - Virender Sahota
- Centre for Biomedical Sciences, Department of Biological Sciences, Royal Holloway University of London, Egham, Surrey TW20 OEX, UK; (E.D.); (R.S.B.W.)
| | - Robin S. B. Williams
- Centre for Biomedical Sciences, Department of Biological Sciences, Royal Holloway University of London, Egham, Surrey TW20 OEX, UK; (E.D.); (R.S.B.W.)
| | - Stuart Snowden
- Centre for Biomedical Sciences, Department of Biological Sciences, Royal Holloway University of London, Egham, Surrey TW20 OEX, UK; (E.D.); (R.S.B.W.)
| | - Hrvoje Augustin
- Centre for Biomedical Sciences, Department of Biological Sciences, Royal Holloway University of London, Egham, Surrey TW20 OEX, UK; (E.D.); (R.S.B.W.)
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Sanfilippo MJ, Layshock ME, Keniston L. Exploring the association between outcome measures to guide clinical management in patients with amyotrophic lateral sclerosis. J Phys Ther Sci 2022; 34:532-539. [PMID: 35937622 PMCID: PMC9345750 DOI: 10.1589/jpts.34.532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 05/02/2022] [Indexed: 11/24/2022] Open
Abstract
[Purpose] The usefulness and limitations of outcome measures changes throughout
functional decline of patients with Amyotrophic Lateral Sclerosis (ALS). This study aims
to describe associations between outcome measures in patients with ALS over time.
[Participants and Methods] Participant data was collected at a multidisciplinary ALS
clinic during regular clinic visits, including gait velocity, Timed Up and Go, the ALS
Functional Rating Scale-Revised, and it’s Gross Motor Subscale. [Results] All gait
velocity measures were <1.2 m/sec; average Timed Up and Go was >13.5 sec. There was
strong internal consistency between ALS Functional Rating Scale-Revised and its functional
mobility components and a strong, significant correlation between the Timed Up and Go and
the Gross Motor Subscale. [Conclusion] Patients with ALS are not community ambulators and
demonstrate risk for falls. We found concurrent validity between objective and
self-reported measures. The strong association between the Gross Motor Subscale and the
Timed Up and Go may allow PTs to utilize the self-reported Gross Motor Subscale to predict
fall risk. Clinically, when the Timed Up and Go and gait velocity are no longer
appropriate due to disease progression, the Gross Motor Subscale can provide insight into
functional decline.
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Affiliation(s)
- Michelle J Sanfilippo
- Department of Physical Therapy, University of Maryland Eastern Shore: 1 College Backbone Road, Princess Anne, MD 21853, USA
| | - Mary E Layshock
- Department of Physical Therapy, University of Maryland Eastern Shore: 1 College Backbone Road, Princess Anne, MD 21853, USA
| | - Leslie Keniston
- Department of Physical Therapy, University of Maryland Eastern Shore: 1 College Backbone Road, Princess Anne, MD 21853, USA
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