دورية أكاديمية
Whole genome comparisons suggest random distribution of Mycobacterium ulcerans genotypes in a Buruli ulcer endemic region of Ghana.
العنوان: | Whole genome comparisons suggest random distribution of Mycobacterium ulcerans genotypes in a Buruli ulcer endemic region of Ghana. |
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المؤلفون: | Anthony S Ablordey, Koen Vandelannoote, Isaac A Frimpong, Evans K Ahortor, Nana Ama Amissah, Miriam Eddyani, Lies Durnez, Françoise Portaels, Bouke C de Jong, Herwig Leirs, Jessica L Porter, Kirstie M Mangas, Margaret M C Lam, Andrew Buultjens, Torsten Seemann, Nicholas J Tobias, Timothy P Stinear |
المصدر: | PLoS Neglected Tropical Diseases, Vol 9, Iss 3, p e0003681 (2015) |
بيانات النشر: | Public Library of Science (PLoS), 2015. |
سنة النشر: | 2015 |
المجموعة: | LCC:Arctic medicine. Tropical medicine LCC:Public aspects of medicine |
مصطلحات موضوعية: | Arctic medicine. Tropical medicine, RC955-962, Public aspects of medicine, RA1-1270 |
الوصف: | Efforts to control the spread of Buruli ulcer--an emerging ulcerative skin infection caused by Mycobacterium ulcerans--have been hampered by our poor understanding of reservoirs and transmission. To help address this issue, we compared whole genomes from 18 clinical M. ulcerans isolates from a 30 km2 region within the Asante Akim North District, Ashanti region, Ghana, with 15 other M. ulcerans isolates from elsewhere in Ghana and the surrounding countries of Ivory Coast, Togo, Benin and Nigeria. Contrary to our expectations of finding minor DNA sequence variations among isolates representing a single M. ulcerans circulating genotype, we found instead two distinct genotypes. One genotype was closely related to isolates from neighbouring regions of Amansie West and Densu, consistent with the predicted local endemic clone, but the second genotype (separated by 138 single nucleotide polymorphisms [SNPs] from other Ghanaian strains) most closely matched M. ulcerans from Nigeria, suggesting another introduction of M. ulcerans to Ghana, perhaps from that country. Both the exotic genotype and the local Ghanaian genotype displayed highly restricted intra-strain genetic variation, with less than 50 SNP differences across a 5.2 Mbp core genome within each genotype. Interestingly, there was no discernible spatial clustering of genotypes at the local village scale. Interviews revealed no obvious epidemiological links among BU patients who had been infected with identical M. ulcerans genotypes but lived in geographically separate villages. We conclude that M. ulcerans is spread widely across the region, with multiple genotypes present in any one area. These data give us new perspectives on the behaviour of possible reservoirs and subsequent transmission mechanisms of M. ulcerans. These observations also show for the first time that M. ulcerans can be mobilized, introduced to a new area and then spread within a population. Potential reservoirs of M. ulcerans thus might include humans, or perhaps M. ulcerans-infected animals such as livestock that move regularly between countries. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English |
تدمد: | 1935-2727 1935-2735 |
Relation: | http://europepmc.org/articles/PMC4380315?pdf=render; https://doaj.org/toc/1935-2727; https://doaj.org/toc/1935-2735 |
DOI: | 10.1371/journal.pntd.0003681 |
URL الوصول: | https://doaj.org/article/4c95674c2da543cdb1a715be9207e340 |
رقم الأكسشن: | edsdoj.4c95674c2da543cdb1a715be9207e340 |
قاعدة البيانات: | Directory of Open Access Journals |
تدمد: | 19352727 19352735 |
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DOI: | 10.1371/journal.pntd.0003681 |