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Shin C, Kim SI, Park SH, Shin JH, Lee CY, Yang HK, Lee HJ, Kong SH, Suh YS, Kim HJ, Jeon B. Sensitivity of Detecting Alpha-Synuclein Accumulation in the Gastrointestinal Tract and Tissue Volume Examined. J Mov Disord 2022; 15:264-268. [PMID: 35880377 PMCID: PMC9536904 DOI: 10.14802/jmd.22042] [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: 03/15/2022] [Accepted: 05/31/2022] [Indexed: 11/25/2022] Open
Abstract
Objective This study aimed to evaluate whether a larger tissue volume increases the sensitivity of detecting alpha-synuclein (AS) pathology in the gastrointestinal (GI) tract. Methods Nine patients with Parkinson’s disease (PD) or idiopathic rapid eye movement sleep disorder (iRBD) who underwent GI operation and had full-depth intestinal blocks were included. All patients were selected from our previous study population. A total of 10 slides (5 serial sections from the proximal and distal blocks) per patient were analyzed. Results In previous studies, pathologic evaluation revealed phosphorylated AS (+) in 5/9 patients (55.6%) and in 1/5 controls (20.0%); in this extensive examination, this increased to 8/9 patients (88.9%) but remained the same in controls (20.0%). The severity and distribution of positive findings were similar between patients with iRBD and PD. Conclusion Examining a large tissue volume increased the sensitivity of detecting AS accumulation in the GI tract.
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Affiliation(s)
- Chaewon Shin
- Department of Neurology, Chungnam National University Sejong Hospital, Chungnam National University College of Medicine, Sejong, Korea
| | - Seong-Ik Kim
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
| | - Sung-Hye Park
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
| | - Jung Hwan Shin
- Department of Neurology, MRC and Movement Disorder Center, Seoul National University Hospital, Parkinson Study Group, Seoul National University College of Medicine, Seoul, Korea
| | - Chan Young Lee
- Department of Neurology, Ehwa Womans University Mokdong Hospital, Seoul, Korea
| | - Han-Kwang Yang
- Department of Surgery, Cancer Research Institute, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Hyuk-Joon Lee
- Department of Surgery, Cancer Research Institute, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Seong-Ho Kong
- Department of Surgery, Cancer Research Institute, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Yun-Suhk Suh
- Department of Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Han-Joon Kim
- Department of Neurology, MRC and Movement Disorder Center, Seoul National University Hospital, Parkinson Study Group, Seoul National University College of Medicine, Seoul, Korea
| | - Beomseok Jeon
- Department of Neurology, MRC and Movement Disorder Center, Seoul National University Hospital, Parkinson Study Group, Seoul National University College of Medicine, Seoul, Korea
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