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Dembélé ME, Cissé L, Diarra S, Yalcouyé A, Taméga A, Bocoum A, Maïga AB, Diallo SH, Coulibaly T, Diallo S, Simaga A, Grunseich C, Kéita M, Coulibaly MB, Fischbeck KH, Maiga Y, Guinto CO, Landouré G. [Progressive myoclonic epilepsy in the department of neurology of the University Teaching hospital Point "G"]. Mali Med 2022; 37:17-21. [PMID: 36945313 PMCID: PMC10026847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
Background Progressive Myoclonic Epilepsy (PME) is a heterogeneous group of pathologies associating epileptic seizures and other neurological and non-neurological disorders. Objectives We aim to characterize patients with symptoms of PME and identify the underlying genetic disorder. Methods After informed consent, the patients seen in the protocol for hereditary neurological diseases and presenting signs of epilepsy without a secondary cause were clinically evaluated over a three-year period in the Department of Neurology of the CHU Point "G". EEG, brain imaging and laboratory tests were performed to consolidate our diagnosis. DNA was extracted for genetic analysis. Results 141 families including five families with PME totaling eight cases were enrolled. The predominant symptoms in our patients were myoclonus in 87.5% (N = 8), followed by GTCS and cognitive impairment in 50%, each. A notion of parental consanguinity was found in 60% and autosomal recessive transmission evoked in 80% (N = 5). The EEG was pathological in 62.5% and imaging showed ponto-cerebellar atrophy in 25% (N = 8). The combination of sodium valproate and clonazepam was the main treatment. One case of death was recorded. Conclusion We report cases of PME in Mali with a possibility of discovering new genes.
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Affiliation(s)
- M E Dembélé
- Faculte de médecine et d'odontostomatologie, Université des sciences, des techniques et des technologies de Bamako, Mali
| | - L Cissé
- Service de Neurologie, CHU du Point "G", Bamako, Mali
| | - S Diarra
- Faculte de médecine et d'odontostomatologie, Université des sciences, des techniques et des technologies de Bamako, Mali
- Neurogenetics Branch, NINDS, NIH, Bethesda, MD
| | - A Yalcouyé
- Faculte de médecine et d'odontostomatologie, Université des sciences, des techniques et des technologies de Bamako, Mali
| | - A Taméga
- Faculte de médecine et d'odontostomatologie, Université des sciences, des techniques et des technologies de Bamako, Mali
| | - A Bocoum
- Faculte de médecine et d'odontostomatologie, Université des sciences, des techniques et des technologies de Bamako, Mali
| | - A B Maïga
- Faculte de médecine et d'odontostomatologie, Université des sciences, des techniques et des technologies de Bamako, Mali
| | - S H Diallo
- Faculte de médecine et d'odontostomatologie, Université des sciences, des techniques et des technologies de Bamako, Mali
- Service de Neurologie, CHU de Gabriel Touré, Bamako, Mali
| | - T Coulibaly
- Faculte de médecine et d'odontostomatologie, Université des sciences, des techniques et des technologies de Bamako, Mali
- Service de Neurologie, CHU du Point "G", Bamako, Mali
| | - S Diallo
- Service de Neurologie, CHU de Gabriel Touré, Bamako, Mali
| | - A Simaga
- Institut d'Ophtalmologie Tropicale de l'Afrique, Bamako, Mali
| | - C Grunseich
- Neurogenetics Branch, NINDS, NIH, Bethesda, MD
| | - M Kéita
- Faculte de médecine et d'odontostomatologie, Université des sciences, des techniques et des technologies de Bamako, Mali
- Service d'ORL, CHU de Gabriel Touré, Bamako, Mali
| | - M B Coulibaly
- Malaria Research and Training Center, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali
| | | | - Y Maiga
- Faculte de médecine et d'odontostomatologie, Université des sciences, des techniques et des technologies de Bamako, Mali
- Service de Neurologie, CHU de Gabriel Touré, Bamako, Mali
| | - C O Guinto
- Faculte de médecine et d'odontostomatologie, Université des sciences, des techniques et des technologies de Bamako, Mali
- Service de Neurologie, CHU du Point "G", Bamako, Mali
| | - G Landouré
- Faculte de médecine et d'odontostomatologie, Université des sciences, des techniques et des technologies de Bamako, Mali
- Service de Neurologie, CHU du Point "G", Bamako, Mali
- Neurogenetics Branch, NINDS, NIH, Bethesda, MD
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Neafsey DE, Lawniczak MKN, Park DJ, Redmond SN, Coulibaly MB, Traoré SF, Sagnon N, Costantini C, Johnson C, Wiegand RC, Collins FH, Lander ES, Wirth DF, Kafatos FC, Besansky NJ, Christophides GK, Muskavitch MAT. SNP genotyping defines complex gene-flow boundaries among African malaria vector mosquitoes. Science 2010; 330:514-517. [PMID: 20966254 DOI: 10.1126/science.1193036] [Citation(s) in RCA: 141] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Mosquitoes in the Anopheles gambiae complex show rapid ecological and behavioral diversification, traits that promote malaria transmission and complicate vector control efforts. A high-density, genome-wide mosquito SNP-genotyping array allowed mapping of genomic differentiation between populations and species that exhibit varying levels of reproductive isolation. Regions near centromeres or within polymorphic inversions exhibited the greatest genetic divergence, but divergence was also observed elsewhere in the genomes. Signals of natural selection within populations were overrepresented among genomic regions that are differentiated between populations, implying that differentiation is often driven by population-specific selective events. Complex genomic differentiation among speciating vector mosquito populations implies that tools for genome-wide monitoring of population structure will prove useful for the advancement of malaria eradication.
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Affiliation(s)
| | | | - D J Park
- Broad Institute, Cambridge, MA 02142, USA
| | | | | | - S F Traoré
- Malaria Research and Training Center, Bamako, Mali
| | - N Sagnon
- Centre National de Recherche et Formation sur le Paludisme, Ouagadougou, Burkina Faso
| | - C Costantini
- Institut de Recherche pour le Développement, Unité de Recherche R016, Montpellier, France.,Organisation de Coordination pour la Lutte contre les Endémies en Afrique Centrale, Yaounde, Cameroon
| | - C Johnson
- Broad Institute, Cambridge, MA 02142, USA
| | | | - F H Collins
- University of Notre Dame, Notre Dame, IN 46556, USA
| | - E S Lander
- Broad Institute, Cambridge, MA 02142, USA
| | - D F Wirth
- Broad Institute, Cambridge, MA 02142, USA.,Harvard School of Public Health, Boston, MA 02115, USA
| | | | - N J Besansky
- University of Notre Dame, Notre Dame, IN 46556, USA
| | | | - M A T Muskavitch
- Broad Institute, Cambridge, MA 02142, USA.,Harvard School of Public Health, Boston, MA 02115, USA.,Boston College, Chestnut Hill, MA 02467, USA
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Barnes MJ, Lobo NF, Coulibaly MB, Sagnon NF, Costantini C, Besansky NJ. SINE insertion polymorphism on the X chromosome differentiates Anopheles gambiae molecular forms. Insect Mol Biol 2005; 14:353-63. [PMID: 16033429 DOI: 10.1111/j.1365-2583.2005.00566.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Polymorphic SINE insertions can be useful markers for assessing population structure and differentiation. Maque is a family of SINE elements which, based on bioinformatic analysis, was suggested to have been active recently in Anopheles gambiae, the major vector of malaria. Here, we report the development of polymorphic Maque insertions as population genetic markers in A. gambiae, and the use of these markers to better characterize divergence on the X chromosome between A. gambiae M and S molecular forms in populations from Burkina Faso and Mali. Our data are consistent with the recent activity of Maque. Phylogenetic analysis suggests that at least two recently active lineages may have a role in mediating genome evolution. We found differences in element insertion frequency and sequence between the M and S populations analysed. Significant differentiation was observed between these two groups across a 6 Mb region at the proximal (centromeric) end of the X chromosome. Locus-specific F(ST) values ranged from 0.14 to 1.00 in this region, yet were not significantly different from zero in more distal locations on the X chromosome; the trend was consistent in populations from both geographical locales suggesting that differentiation is not due to local adaptation. Strong differentiation between M and S at the proximal end of the X chromosome, but not outside this region, suggests the action of selection counteracting limited gene flow between these taxa and supports their characterization as incipient species.
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Affiliation(s)
- M J Barnes
- Center for Tropical Disease Research and Training, Department of Biological Sciences, University of Notre Dame, IN 46556, USA
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