Pathirana HNKS, Cho HS, Cho YI, Kim CL, Wimalasena SHMP, Rajapaksha LGTG, Gunasekara ACWR, Kim CH, Seo BJ, Moon SH, Park JH, Shin GW. Molecular characterization and antimicrobial susceptibility of Corynebacterium pseudotuberculosis isolated from skin abscesses of native Korean goats (Capra hircus coreanae).
J Appl Microbiol 2022;
133:2074-2082. [PMID:
35737750 DOI:
10.1111/jam.15683]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 06/08/2022] [Accepted: 06/15/2022] [Indexed: 11/28/2022]
Abstract
AIMS
This study aimed to investigate the molecular characterization and antimicrobial susceptibility of C. pseudotuberculosis from skin abscesses of Korean native black goats (KNBG, Capra hircus coreanae) in South Korea.
METHODS AND RESULTS
A total of 83 isolates were recovered from skin abscesses of KNBG. Of these isolates, 74 isolates were identified as C. pseudotuberculosis by phospholipase D (PLD) gene-based PCR assay. Each of the isolates possessed all 18 virulence genes (FagA, FagB, FagC, FagD, SigE, SpaC, SodC, PknG, NanH, OppA, OppB, OppC, OppD, OppF, CopC, NrdH and CpaE). The genetic diversity of C. pseudotuberculosis isolates was assessed by the phylogenetic analysis using the concatenated sequences (3,073 bp) of five housekeeping genes (fusA, dnaK, infB, groeL1, and leuA) for investigating their genetic diversity. In the results, the isolates belonged to three groups: group 1 (67 isolates), group 2 (one isolate), and group 3 (six isolates) within biovar ovis. However, the groups exhibited low genetic diversity (0.20~0.41%). In the antimicrobial susceptibility test, most isolates were susceptible to tetracycline, vancomycin, chloramphenicol, ciprofloxacin, erythromycin, enrofloxacin, cefoxitin, ampicillin, gentamycin, cephalothin, and doxycycline, whereas they were not susceptible to cefotaxime, trimethoprim, and streptomycin.
CONCLUSION
This results suggest the involvement of relatively few clones of C. pseudotuberculosis in Korea. Further, present isolates can threaten public health due to potentially virulent strains with all 18 virulence genes and non-susceptible strains to clinically important antibiotics (CIA) and highly important antibiotics (HIA).
SIGNIFICANCE AND IMPACT OF THE STUDY
This study is the first to investigate the genetic diversity and potential pathogenicity of C. pseudotuberculosis biovar ovis isolates from skin abscesses of KBNG in South Korea, and could provide useful information in controlling its infections.
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