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Bakhit Y, Schmitt I, Hamed A, Ibrahim EAA, Mohamed IN, El-Sadig SM, Elseed MA, Alebeed MA, Shaheen MT, Ibrahim MO, Elhassan AA, Eltom K, Ali HA, Ibrahim YA, Almak ME, Abubaker R, Ahmed MA, Abugrain AA, Elrasheed SM, Omar MA, Almahal MA, MohamedSharif AA, Tahir MY, Malik SM, Eldirdiri HS, Khidir RJ, Mohamed MT, Abdalla A, Omer FY, Elsayed LEO, Babikir HEH, Bukhari EAA, Seidi O, Wüllner U. Methylation of alpha-synuclein in a Sudanese cohort. Parkinsonism Relat Disord 2022; 101:6-8. [PMID: 35728367 DOI: 10.1016/j.parkreldis.2022.05.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 05/02/2022] [Accepted: 05/10/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Several studies suggested a significant role of epigenetic changes, including alterations in miRNA, histone modifications, and DNA methylation of α-synuclein (SNCA) in Parkinson's disease (PD) pathogenicity. As of yet, only very few studies have been carried out in this field in Africa and none in Sudan. MATERIALS AND METHODS We collected DNA from 172 Sudanese individuals (90 cases, 82 controls) who donated saliva for DNA extraction (mean age of onset: 40.6 ± 22.4 years). A family history of PD was evident in 64 patients. DNA preparation and bisulfite sequencing of SNCAintron1 was performed as described earlier. RESULTS Of the fourteen analyzed CpGs of SNCAintron1, CpGs 16-23 were hypomethylated in PD (P-value ranged from 0.023 to 0.003). P-values improved, when sporadic cases were excluded from the analysis. CONCLUSION We identified the presence of a specific pattern of DNA methylation in a young Sudanese cohort of familial PD, which confirms the importance of the methylation of SNCAintron1 for PD. This phenomenon appears to be independent of ethnicity, the impact of environmental factors, drug history, or familial clustering.
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Affiliation(s)
- Yousuf Bakhit
- Department of Neurology, University Hospital Bonn, Germany; Department of Basic Medical Sciences, Faculty of Dentistry, University of Khartoum, Sudan; Sudan Neuroscience Projects, University of Khartoum, Khartoum, Sudan.
| | - Ina Schmitt
- Department of Neurology, University Hospital Bonn, Germany
| | - Ahlam Hamed
- Department of Paediatrics, Faculty of Medicine, University of Khartoum, Khartoum, Sudan
| | - Etedal Ahmed A Ibrahim
- Faculty of Medicine, Al Neelain University, Khartoum, Sudan, and The National Centre for Neurological Sciences, Sudan
| | - Inaam N Mohamed
- Department of Paediatrics, Faculty of Medicine, University of Khartoum, Khartoum, Sudan
| | - Sarah M El-Sadig
- Department of Neurology, Soba Teaching Hospital, And Department of Medicine, Faculty of Medicine, University of Khartoum, Khartoum, Sudan
| | - Maha A Elseed
- Department of Paediatrics, Faculty of Medicine, University of Khartoum, Khartoum, Sudan
| | - Mohamed A Alebeed
- Sudan Neuroscience Projects, University of Khartoum, Khartoum, Sudan
| | - Mutaz T Shaheen
- Sudan Neuroscience Projects, University of Khartoum, Khartoum, Sudan
| | - Mohamed O Ibrahim
- Sudan Neuroscience Projects, University of Khartoum, Khartoum, Sudan; Department of Biochemistry, Faculty of Medicine, Sudan University of Science and Technology, Khartoum, Sudan
| | - Ali A Elhassan
- Sudan Neuroscience Projects, University of Khartoum, Khartoum, Sudan
| | - Khalid Eltom
- Sudan Neuroscience Projects, University of Khartoum, Khartoum, Sudan
| | - Hiba A Ali
- Sudan Neuroscience Projects, University of Khartoum, Khartoum, Sudan
| | - Yousuf A Ibrahim
- Sudan Neuroscience Projects, University of Khartoum, Khartoum, Sudan
| | - Murad E Almak
- Department of Physiology, Faculty of Medicine, University of Khartoum, Khartoum, Sudan
| | - Rayan Abubaker
- Department of Molecular Medicine, Institute of Endemic Diseases, University of Khartoum, Khartoum, Sudan; Department of Molecular Biology, National University Biomedical Research Institute (NUBRI), National University, Khartoum, Sudan
| | | | - Ahmed A Abugrain
- Sudan Neuroscience Projects, University of Khartoum, Khartoum, Sudan
| | - Salma M Elrasheed
- Sudan Neuroscience Projects, University of Khartoum, Khartoum, Sudan
| | - Mawia A Omar
- Sudan Neuroscience Projects, University of Khartoum, Khartoum, Sudan
| | - Mohamed A Almahal
- Sudan Neuroscience Projects, University of Khartoum, Khartoum, Sudan
| | - Abubaker A MohamedSharif
- Sudan Neuroscience Projects, University of Khartoum, Khartoum, Sudan; Department of Anatomy, Faculty of Medicine, University of Khartoum, Khartoum, Sudan
| | - Mohamed Y Tahir
- Sudan Neuroscience Projects, University of Khartoum, Khartoum, Sudan
| | - Sawazen M Malik
- Sudan Neuroscience Projects, University of Khartoum, Khartoum, Sudan
| | - Hazim S Eldirdiri
- Sudan Neuroscience Projects, University of Khartoum, Khartoum, Sudan; University of Bordeaux, INSERM, U1215, Neurocentre Magendie, Bordeaux, France
| | - Reem J Khidir
- Sudan Neuroscience Projects, University of Khartoum, Khartoum, Sudan
| | - Malaz T Mohamed
- Sudan Neuroscience Projects, University of Khartoum, Khartoum, Sudan
| | | | - Farouk Yassen Omer
- Department of Medicine, Neurology, Omdurman Islamic University, Khartoum, Sudan
| | - Liena E O Elsayed
- Department of Basic Sciences, College of Medicine, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Haydar El Hadi Babikir
- Department of Paediatrics and Child Health, Faculty of Medicine, University of Gezira, Sudan
| | - Elfateh Abd-Allah Bukhari
- Department of Neurology, Bashaier University Hospital, And Khartoum Teaching Hospital. Department of Medicine, Faculty of Medicine, Al-Neelain University, Khartoum, Sudan
| | - Osheik Seidi
- Department of Neurology, Soba Teaching Hospital, And Department of Medicine, Faculty of Medicine, University of Khartoum, Khartoum, Sudan
| | - Ullrich Wüllner
- Department of Neurology, University Hospital Bonn, Germany; German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany.
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