| Autor: |
Martina Böttner, Dimitri Zorenkov, Ines Hellwig, Martina Barrenschee, Jonas Harde, Tobias Fricke, Günther Deuschl, Jan-Hendrik Egberts, Thomas Becker, Annette Fritscher-Ravens, Alexander Arlt, Thilo Wedel |
| Jazyk: |
angličtina |
| Rok vydání: |
2012 |
| Předmět: |
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| Zdroj: |
Neurobiology of Disease, Vol 48, Iss 3, Pp 474-480 (2012) |
| Druh dokumentu: |
article |
| ISSN: |
1095-953X |
| DOI: |
10.1016/j.nbd.2012.07.018 |
| Popis: |
Background: Alpha-synuclein (α-syn) is abundantly expressed in the central nervous system and involved in the regulation of neurotransmission. Insoluble fibrils of phosphorylated α-synuclein (p-α-syn) have been implicated in several neurodegenerative diseases (e.g. Parkinson's disease, Alzheimer's disease). The aim of the study was to determine the gene expression pattern and localization of α-syn/p-α-syn in the human enteric nervous system (ENS). Methods: Human colonic specimens (n=13, 15–83 years) were processed for α-syn and p-α-syn immunohistochemistry. Colocalization of α-syn was assessed by dual-labeling with pan-neuronal markers (PGP 9.5, HuC/D). For qPCR studies, tissue was obtained from full-thickness sections, tunica muscularis, submucosa, mucosa, and laser-microdissected (LMD) enteric ganglia. Results: Highest α-syn levels were detectable within the tunica muscularis and submucosa. Ganglia isolated by LMD showed high expression of α-syn mRNA. All myenteric and submucosal ganglia and nerve fibers were immunoreactive for α-syn. Dual-labeling revealed colocalization of α-syn with both pan-neuronal markers. p-α-syn immunoreactivity was consistently observed in specimens from adults with increasing age. Conclusions: α-syn is abundantly expressed in all nerve plexus of the human ENS including both neuronal somata and processes. The presence of p-α-syn within the ENS is a regular finding in adults with increasing age and may not be regarded as pathological correlate. The data provide a basis to unravel the functions of α-syn and to evaluate altered α-syn in enteric neuropathies and α-synucleinopathies of the CNS with gastrointestinal manifestations. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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