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Sun M, Cheng Y, Gao C, Peng H, Wang N, Gu W, Lu D. Construction and characterization of microsatellite markers for the Schistosoma japonicum isolate from a hilly area of China based on whole genome sequencing. Parasitol Res 2023; 122:2737-2748. [PMID: 37710024 DOI: 10.1007/s00436-023-07976-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 09/10/2023] [Indexed: 09/16/2023]
Abstract
Schistosoma japonicum had once caused the greatest disease burden in China and has still been transmitted in some hilly areas, for example, in Shitai of Anhui province, where rodents are projected to be the main reservoir. This may lead to a critical need of molecular tools with high efficiency in monitoring the dynamic of the rodent-associated S. japonicum, as an appropriate amount of schistosome input can re-establish its life cycle in a place with snails and then result in the re-emergence of schistosomiasis. Therefore, the goal of this study was to develop high polymorphic microsatellites from the whole genome of rodent-associated S. japonicum strain to monitor its transmission dynamic. We sampled the hilly schistosome isolate from Shitai of Anhui in China and sequenced the parasite with the next-generation sequencing technology. The whole genome was assembled with four different approaches. We then developed 71 microsatellite markers at a genome-wide scale throughout two best assembled genomes. Based on their chromosome mapping and the expected length of targeted sequences, we selected 24 markers for the development of multiplex reactions. Two multiplexes composed of 10 loci were finally developed, and their potential was revealed by their successful application on and capturing the genetic diversity of three schistosome populations. The selected 10 markers, each with clear chromosome location and characteristics, will be greatly useful in tracing the dispersal pathways or/and dynamics of the rodent-associated S. japonicum or others in the hilly area of China or elsewhere.
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Affiliation(s)
- Mengtao Sun
- Department of Epidemiology and Statistics, School of Public Health, Soochow University, Suzhou, China
| | - Yuheng Cheng
- Department of Epidemiology and Statistics, School of Public Health, Soochow University, Suzhou, China
| | - Changzhe Gao
- Department of Epidemiology and Statistics, School of Public Health, Soochow University, Suzhou, China
| | - Hanqi Peng
- Department of Epidemiology and Statistics, School of Public Health, Soochow University, Suzhou, China
| | - Ning Wang
- Department of Epidemiology and Statistics, School of Public Health, Soochow University, Suzhou, China
| | - Weiling Gu
- Jiaxing Center for Disease Control and Prevention, Jiaxing, Zhejiang, China.
| | - Dabing Lu
- Department of Epidemiology and Statistics, School of Public Health, Soochow University, Suzhou, China.
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Chaves CF, Sabino-Santos G, Cedraz FMA, Santos-Muccillo P, Filho JR, Zanardi VS, Moretto VT, Santos APC, Simões F, Barbosa LM, Silva LK, Reis MG, Blanton RE. Evidence for local transmission and maintenance of schistosomiasis in an urban neighbourhood in Northeast Brazil. Transbound Emerg Dis 2022; 69:3153-3159. [PMID: 36057790 PMCID: PMC11013574 DOI: 10.1111/tbed.14692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 08/14/2022] [Accepted: 08/29/2022] [Indexed: 02/07/2023]
Abstract
Schistosomiasis is a tropical neglected disease commonly associated with rural areas; however, urban schistosomiasis has been reported worldwide, and increasing urbanization is one of the most important demographic shifts of the 20th and now 21st centuries. The pattern of urbanization is not uniform so that within the same city the rates and sources of population increase vary. Here, we report on the parasite composition in one neighbourhood in the metropolitan area of Salvador, Bahia, Brazil. Using epidemiological data and population genetics, we find evidence for local transmission and maintenance of Schistosoma mansoni infection within an urban population and little contribution from rural-urban migration. Our findings provide direction for local mitigation strategies and to assist the public living in this neighbourhood to interrupt the local transmission cycle.
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Affiliation(s)
- Camila F. Chaves
- Gonçalo Moniz Research Centre, Oswaldo Cruz Foundation, Salvador, Bahia, Brazil
| | - Gilberto Sabino-Santos
- Department of Tropical Medicine, Tulane University School of Public Health and Tropical Medicine, New Orleans, Louisiana, United States
- Centre for Virology Research, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | | | | | - João Ricardo Filho
- Gonçalo Moniz Research Centre, Oswaldo Cruz Foundation, Salvador, Bahia, Brazil
| | - Vanessa S. Zanardi
- Gonçalo Moniz Research Centre, Oswaldo Cruz Foundation, Salvador, Bahia, Brazil
| | - Vanessa T. Moretto
- Gonçalo Moniz Research Centre, Oswaldo Cruz Foundation, Salvador, Bahia, Brazil
| | | | - Fabiano Simões
- Gonçalo Moniz Research Centre, Oswaldo Cruz Foundation, Salvador, Bahia, Brazil
- Centre for Zoonoses Control, Salvador, Bahia, Brazil
| | - Lucio M. Barbosa
- Gonçalo Moniz Research Centre, Oswaldo Cruz Foundation, Salvador, Bahia, Brazil
- Bahiana School of Medicine and Public Health, Salvador, Bahia, Brazil
| | - Luciano K. Silva
- Gonçalo Moniz Research Centre, Oswaldo Cruz Foundation, Salvador, Bahia, Brazil
| | - Mitermayer G. Reis
- Gonçalo Moniz Research Centre, Oswaldo Cruz Foundation, Salvador, Bahia, Brazil
- School of Medicine, Federal University of Bahia, Salvador, Bahia, Brazil
- Yale School of Public Health, Yale University, New Haven, Connecticut, United States
| | - Ronald E. Blanton
- Department of Tropical Medicine, Tulane University School of Public Health and Tropical Medicine, New Orleans, Louisiana, United States
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Long JC, Taylor SE, Barbosa LM, Silva LK, Reis MG, Blanton RE. Cryptic population structure and transmission dynamics uncovered for Schistosoma mansoni populations by genetic analyses. Sci Rep 2022; 12:1059. [PMID: 35058485 PMCID: PMC8776789 DOI: 10.1038/s41598-022-04776-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 12/23/2021] [Indexed: 11/18/2022] Open
Abstract
Patterns of diversity in pathogen genomes provide a window into the spatiotemporal spread of disease. In this study, we tested the hypothesis that Schistosoma mansoni parasites form genetic clusters that coincide with the communities of their human hosts. We also looked for genetic clustering of parasites at the sub-community level. Our data consists of 14 microsatellite DNA markers, typed from pooled DNA samples from [Formula: see text] infected individuals living in three Brazilian communities. We found a one-to-one correspondence between genetic clusters found by K-means cluster analysis and communities when [Formula: see text]. These clusters are also easily identified in a neighbor-joining tree and principal coordinates plots. K-means analysis with [Formula: see text] also reveals genetic clusters of parasites at the sub-community level. These sub-clusters also appear on the neighbor-joining tree and principal coordinates plots. A surprising finding is a genetic relationship between subgroups in widely separated human communities. This connection suggests the existence of common transmission sites that have wide influence. In summary, the genetic structure of S. mansoni in Brazil juxtaposes local isolation that is occasionally broken by long-range migration. Permanent eradication of schistosomes will require both local efforts and the identification of regional infection reservoirs.
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Affiliation(s)
- Jeffrey C Long
- Department of Anthropology, University of New Mexico, Albuquerque, NM, 87131, USA.
| | - Sarah E Taylor
- Department of Anthropology, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Lucio M Barbosa
- Bahiana School of Medicine and Public Health, Av. Silveira Martins, n 3386, Salvador, Bahia, 41150-100, Brazil
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Ministry of Health, Waldemar Falcão Street, 121, Salvador, Bahia, Brazil
| | - Luciano K Silva
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Ministry of Health, Waldemar Falcão Street, 121, Salvador, Bahia, Brazil
| | - Mitermayer G Reis
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Ministry of Health, Waldemar Falcão Street, 121, Salvador, Bahia, Brazil
- Faculty of Medicine of Bahia, Federal University of Bahia, Praça Conselheiro Almeida Couto, s/n - Largo do Terreiro de Jesus, Salvador, BA, 40025-010, Brazil
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, Yale University, 60 College Street, P.O. Box 208034, New Haven, CT, USA
| | - Ronald E Blanton
- Department of Tropical Medicine, School of Public Health and Tropical Medicine, Tulane University, 1440 Canal Street, Suite 2306, New Orleans, LA, 70112, USA
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