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Kurz A, Kumar R, Northoff BH, Wenk C, Schirra J, Donakonda S, Höglinger GU, Schwarz J, Rozanski V, Hübner R, Bötzel K, Holdt LM, Koeglsperger T. Differential expression of gut miRNAs in idiopathic Parkinson's disease. Parkinsonism Relat Disord 2021; 88:46-50. [PMID: 34118643 DOI: 10.1016/j.parkreldis.2021.05.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 05/18/2021] [Accepted: 05/20/2021] [Indexed: 11/17/2022]
Abstract
OBJECTIVE In the present work, we aimed to investigate the expression of microRNAs (miRNAs) in routine colonic biopsies obtained from patients with idiopathic Parkinson's disease (PD) and to address their value as a diagnostic biomarker for PD and their mechanistic contribution to PD onset and progression. METHODS Patients with PD (n = 13) and healthy controls (n = 17) were prospectively recruited to undergo routine colonic biopsies for cancer screening. Total RNA was extracted from the biopsy material and the expression of miRNAs was quantified by Illumina High-Throughput Sequencing. RESULTS Statistical analysis revealed a significant submucosal enrichment of the miRNA hsa-miR-486-5p in colonic biopsies from PD patients compared to the control subjects. The expression of miR-486-5p correlated with age and disease severity as measured by the UPDRS and Hoehn & Yahr scale. miRNA gene target analysis identified 301 gene targets that are affected by miR-486-5p. A follow-up associated target identification and pathway enrichment analysis further determined their role in distinct biological processes in the enteric nervous system (ENS). INTERPRETATION Our work demonstrates an enrichment of submucosal miR-486-5p in routine colonic biopsies from PD patients. Our results will support the examination of miR-486-5p as a PD biomarker and help to understand the significance of the miR-486-5p gene targets for PD onset and progression. In addition, our data will support the investigation of the molecular and cellular mechanisms of GI dysfunction in PD.
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Affiliation(s)
- Anna Kurz
- Department of Neurology, Ludwig Maximilian University, Munich, Germany; Department of Translational Neurodegeneration, German Centre for Neurodegenerative Diseases (DZNE), Munich, Germany
| | - Rohit Kumar
- Technical University of Munich Medical School, Munich, Germany; Department of Translational Neurodegeneration, German Centre for Neurodegenerative Diseases (DZNE), Munich, Germany
| | - Bernd H Northoff
- Institute of Laboratory Medicine, University Hospital, Ludwig Maximilian University (LMU) Munich, Munich, Germany
| | - Catharina Wenk
- Institute of Laboratory Medicine, University Hospital, Ludwig Maximilian University (LMU) Munich, Munich, Germany
| | - Jörg Schirra
- Department of Internal Medicine III, Ludwig Maximilian University, Munich, Germany
| | - Sainitin Donakonda
- Institute of Immunology and Experimental Oncology, Technical University of Munich, Munich, Germany
| | - Günter U Höglinger
- Department of Neurology, Technical University, Munich, Germany; Department of Neurology, Hannover Medical School, Hannover, Germany; Department of Translational Neurodegeneration, German Centre for Neurodegenerative Diseases (DZNE), Munich, Germany
| | - Johannes Schwarz
- Department of Neurology, Klinik Haag I. OB, Mühldorf a. Inn, Germany
| | - Verena Rozanski
- Department of Neurology, Klinik Haag I. OB, Mühldorf a. Inn, Germany
| | - Rainer Hübner
- Department of Neurology, Klinik Haag I. OB, Mühldorf a. Inn, Germany
| | - Kai Bötzel
- Department of Neurology, Ludwig Maximilian University, Munich, Germany
| | - Lesca Miriam Holdt
- Institute of Laboratory Medicine, University Hospital, Ludwig Maximilian University (LMU) Munich, Munich, Germany
| | - Thomas Koeglsperger
- Department of Translational Brain Research, German Centre for Neurodegenerative Diseases (DZNE), Munich, Germany; Department of Neurology, Ludwig Maximilian University, Munich, Germany.
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