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Pro S, Tozzi AE, D'Amico A, Catteruccia M, Cherchi C, De Luca M, Nicita F, Diodato D, Cutrera R, Bertini E, Valeriani M. Age-related sensory neuropathy in patients with spinal muscular atrophy type 1. Muscle Nerve 2021; 64:599-603. [PMID: 34368972 DOI: 10.1002/mus.27389] [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: 10/02/2020] [Revised: 07/21/2021] [Accepted: 07/24/2021] [Indexed: 11/12/2022]
Abstract
INTRODUCTION/AIMS Spinal muscular atrophy type 1 (SMA 1) is a devastating motor neuron disorder that leads to progressive muscle weakness, respiratory failure and premature death. Although sensory electrophysiological changes have been anecdotally found in pediatric SMA 1 patients, the age of onset of sensory neuropathy remains unknown. METHODS Sensory nerve conduction studies of the median and sural nerves were performed in 28 consecutive SMA 1 patients of different ages. Sensory nerve conduction velocities and sensory nerve action potential (SNAP) amplitudes recorded in these patients were compared with those obtained from 93 healthy subjects stratified by age. RESULTS SNAP amplitudes decreased with increasing age in the sural and median nerves, without any significant difference between upper and lower limbs. DISCUSSION Our data suggest that sural and median nerve SNAP amplitudes are normal in younger patients, while an axonal neuropathy appears in older ones.
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Affiliation(s)
- Stefano Pro
- Neurophysiology Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Alberto Eugenio Tozzi
- Predictive and Preventive Medicine Research Unit, Bambino Gesù Children Hospital, IRCCS, Rome, Italy
| | - Adele D'Amico
- Unit of Neuromuscular and Neurodegenerative Diseases, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Michela Catteruccia
- Unit of Neuromuscular and Neurodegenerative Diseases, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Claudio Cherchi
- Bronchopneumology Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | | | - Francesco Nicita
- Unit of Neuromuscular and Neurodegenerative Diseases, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Daria Diodato
- Unit of Neuromuscular and Neurodegenerative Diseases, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Renato Cutrera
- Bronchopneumology Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Enrico Bertini
- Unit of Neuromuscular and Neurodegenerative Diseases, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Massimiliano Valeriani
- Neurology Ward Unit, Bambino Gesù Hospital, Rome, Italy.,Center for Sensory-Motor Interaction, Aalborg University, Aalborg, Denmark
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Duman O, Uysal H, Skjei KL, Kizilay F, Karauzum S, Haspolat S. Sensorimotor polyneuropathy in patients with SMA type-1: Electroneuromyographic findings. Muscle Nerve 2013; 48:117-21. [DOI: 10.1002/mus.23722] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/08/2012] [Indexed: 12/12/2022]
Affiliation(s)
- Ozgur Duman
- Akdeniz University Hospital; H Block; Department of Child Neurology; Antalya Turkey
| | - Hilmi Uysal
- Akdeniz University Hospital; Department of Neurology; Antalya Turkey
| | - Karen L. Skjei
- Children Hospital of Philadelphia; Department of Neurology; Philadelphia Pennsylvania USA
| | - Ferah Kizilay
- Akdeniz University Hospital; Department of Neurology; Antalya Turkey
| | - Sibel Karauzum
- Akdeniz University Hospital; Department of Medical Biology and Genetics; Antalya Turkey
| | - Senay Haspolat
- Akdeniz University Hospital; H Block; Department of Child Neurology; Antalya Turkey
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Anagnostou E, Miller SP, Guiot MC, Karpati G, Simard L, Dilenge ME, Shevell MI. Type I spinal muscular atrophy can mimic sensory-motor axonal neuropathy. J Child Neurol 2005; 20:147-50. [PMID: 15794183 DOI: 10.1177/08830738050200022101] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Spinal muscular atrophy is a group of allelic autosomal recessive disorders characterized by progressive motoneuron loss, symmetric weakness, and skeletal muscle atrophy. It is traditionally considered a pure lower motoneuron disorder, for which a current definitive diagnosis is now possible by molecular genetic testing. We report two newborns with a clinical phenotype consistent with that of spinal muscular atrophy type I and nerve conduction studies and electromyography suggesting more extensive sensory involvement than classically described with spinal muscular atrophy. Molecular testing confirmed spinal muscular atrophy in patient 1 but not in patient 2. Thus, in the setting of a suspected congenital axonal neuropathy, molecular testing might be necessary to distinguish spinal muscular atrophy type I from infantile polyneuropathy.
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Affiliation(s)
- Evdokia Anagnostou
- Division of Pediatric Neurology, Montreal Children's Hospital, Department of Neurology, McGill University, Montreal, Quebec
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5
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Millichap JG. Acute Onset Infantile Spinal Muscular Atrophy. Pediatr Neurol Briefs 2001. [DOI: 10.15844/pedneurbriefs-15-7-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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