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  5. Population deviation of piggery-associated methicillin-resistant Staphylococcus aureus based on mec-associated direct repeat unit analysis
 
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Population deviation of piggery-associated methicillin-resistant Staphylococcus aureus based on mec-associated direct repeat unit analysis

Journal
Infection, Genetics and Evolution
Journal Volume
16
Pages
349-354
Date Issued
2013
Author(s)
Wan M.T.
Lauderdale T.L.
Kobayashi N.
Urushibara N.
CHIN-CHENG CHOU  
DOI
10.1016/j.meegid.2013.03.030
URI
https://scholars.lib.ntu.edu.tw/handle/123456789/444446
URL
https://www2.scopus.com/inward/record.uri?eid=2-s2.0-84876298917&doi=10.1016%2fj.meegid.2013.03.030&partnerID=40&md5=1d4483cfcd27ae641a0793e80450ede6
Abstract
Piggery-associated methicillin-resistant Staphylococcus aureus (MRSA) is a potential zoonotic pathogen. We constructed the population structure and dynamics of staphylococcal chromosome cassette mec (SCC. mec) in MRSA ST9 isolates from different geographical areas of Taiwan. A total of 140 MRSA (135 piggery and 5 human clinical) isolates from three populations located in western Taiwan (n=96 including the 5 clinical isolates), central eastern Taiwan (n=. 22), and Penghu Island (n=22) were collected and characterized by analysis of the mec-associated direct repeat unit (dru). Twenty-eight dru types (with 24 novel) and 15 dru-Clonal Complexes (CCs) were identified. The predominant novel dt12w type (48.6%) was widespread in all populations and may have a superior ability to transmit among populations. The minimum spanning network showed that at least two ancestral dru types (dt11a and dt12w) were identified, and the genetics between different populations could be differentiated. Temporal distributions of clone population dynamics estimated through the Bayesian skyline plot indicated a stable population with a long evolutionary history for MRSA ST9 in Taiwan. Findings indicating that some dru types are shared between piggery-associated and human-clinical MRSA ST9 suggest the occurrence of cross-species horizontal transmission of SCCmec. ? 2013 Elsevier B.V.
Subjects
Dru; Evolution; Livestock-associated MRSA; Population; SCCmec
SDGs

[SDGs]SDG3

Other Subjects
bacterial protein; article; bacterial chromosome; bacterial gene; bacterium identification; bacterium isolate; direct repeat unit typing; gene flow; mec gene; methicillin resistant Staphylococcus aureus; microbial population dynamics; molecular evolution; nonhuman; pig farming; population structure; priority journal; Taiwan; Animals; Bacterial Proteins; Bayes Theorem; Cluster Analysis; DNA, Bacterial; Evolution, Molecular; Gene Flow; Haplotypes; Humans; Methicillin-Resistant Staphylococcus aureus; Phylogeography; Repetitive Sequences, Nucleic Acid; Staphylococcal Infections; Swine; Swine Diseases; Taiwan; methicillin resistant Staphylococcus aureus
Type
journal article

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