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Hsueh SJ, Lin CH, Lee NC, Chang TM, Fan SP, Huang WD, Lin YH, Tsai LK, Chien YH, Lee MJ, Hwu WL, Hsueh HW, Yang CC. Unique clinical and electrophysiological features in the peripheral nerve system in patients with sialidosis - a case series study. Orphanet J Rare Dis 2024; 19:217. [PMID: 38790028 PMCID: PMC11127318 DOI: 10.1186/s13023-024-03216-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 05/13/2024] [Indexed: 05/26/2024] Open
Abstract
BACKGROUND To investigate the peripheral nervous system involvement in S sialidosis with typical features of myoclonus, seizure, and giant waves in somatosensory evoked potentials suggesting hyperexcitability in the central nervous system. METHODS The clinical presentation of patients with genetically confirmed sialidosis was recorded. Neurophysiological studies, including nerve conduction studies (NCSs), F-wave studies, and needle electromyography (EMG), were performed on these patients. RESULTS Six patients (M/F: 2:4) were recruited. In addition to the classical presentation, intermittent painful paresthesia was noted in four patients, and three of whom reported it as the earliest symptom. In the NCSs, one patient had reduced compound muscle action potential amplitudes in the right ulnar nerve, while another patient had prolonged distal motor latency in the bilateral tibial and peroneal nerves. Prolonged F-wave latency (83.3%), repeater F-waves (50%), and neurogenic polyphasic waves in EMG (in 2 out of 3 examined patients) were also noted. Interestingly, a very late response was noted in the F-wave study of all patients, probably indicating lesions involving the proximal peripheral nerve or spinal cord. CONCLUSION In addition to the central nervous system, the peripheral nervous system is also involved in sialidosis, with corresponding clinical symptoms. Further study on these phenomena is indicated.
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Affiliation(s)
- Sung-Ju Hsueh
- Department of Neurology, Yunlin County, National Taiwan University Hospital Yunlin Branch, 579 Sec. 2 Yunlin Road, Douliu, Taiwan
| | - Chin-Hsien Lin
- Department of Neurology, National Taiwan University Hospital, No. 7 Chung-Shan South Road, Taipei, 10002, Taiwan
| | - Ni-Chung Lee
- Department of Medical Genetics, National Taiwan University Hospital, 7 Chung-Shan South Road, Taipei, Taipei, Taiwan
| | - Tung-Ming Chang
- Department of Pediatrics, Changhua Christian Hospital, 320 Hsu-Kuang Road, Changhua, Taiwan
| | - Sung-Pin Fan
- Department of Neurology, National Taiwan University Hospital, No. 7 Chung-Shan South Road, Taipei, 10002, Taiwan
| | - Wan-De Huang
- Department of Neurology, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu County, 2, Sec. 1, Shengyi Road, Zhubei City, Taiwan
| | - Yea-Huey Lin
- Department of Neurology, National Taiwan University Hospital, No. 7 Chung-Shan South Road, Taipei, 10002, Taiwan
| | - Li-Kai Tsai
- Department of Neurology, National Taiwan University Hospital, No. 7 Chung-Shan South Road, Taipei, 10002, Taiwan
- Department of Neurology, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu County, 2, Sec. 1, Shengyi Road, Zhubei City, Taiwan
| | - Yin-Hsiu Chien
- Department of Medical Genetics, National Taiwan University Hospital, 7 Chung-Shan South Road, Taipei, Taipei, Taiwan
| | - Ming-Jen Lee
- Department of Neurology, National Taiwan University Hospital, No. 7 Chung-Shan South Road, Taipei, 10002, Taiwan
| | - Wuh-Liang Hwu
- Department of Medical Genetics, National Taiwan University Hospital, 7 Chung-Shan South Road, Taipei, Taipei, Taiwan
| | - Hsueh Wen Hsueh
- Department of Neurology, National Taiwan University Hospital, No. 7 Chung-Shan South Road, Taipei, 10002, Taiwan.
- Department of Anatomy and Cell Biology, National Taiwan University College of Medicine, 1 Renai. Road, Taipei, Taiwan.
| | - Chih-Chao Yang
- Department of Neurology, National Taiwan University Hospital, No. 7 Chung-Shan South Road, Taipei, 10002, Taiwan.
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