한국수산과학회

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kfas, vol. 54, no. 6, pp.918-926, December, 2021
DOI. https://doi.org/10.5657/KFAS.2021.0918

Profiles of Virulence Genes and Antimicrobial Resistance of Vibrio vulnificus
Strains Isolated from Seawater and Fisheries
해수 및 수산물에서 분리한 Vibrio vulnificus의 병원성 유전자 및 항균제
내성

박권삼*·조의동·김희대1
군산대학교 식품생명공학전공, 1충북도립대학교 바이오생명의약과

We isolated 28 Vibrio vulnificus strains from seawater and fisheries and investigated the positive rate of eight virulence
genes. Additionally, we evaluated the susceptibility of these strains to 25 antimicrobials. The positive rates of
fur, vvhA, tcp, rtxA, vcgC, viuB, vvp, and acfA were 100, 92.9, 92.9, 67.9, 64.3, 25.0, 14.3, and 7.1%, respectively.
A disk diffusion susceptibility test revealed that, all the investigated strains had the highest resistance to amoxicillin
and oxacillin, followed by that to streptomycin (96.4%), cefoxitin (92.9%), clindamycin (82.1%), amikacin (67.9%),
vancomycin (46.4%), nalidixic acid (7.1%), penicillin G (7.1%), and ampicillin (3.6%). Moreover, they were susceptible
to 10 other antimicrobials, including cefotaxime, chloramphenicol, erythromycin, gentamicin, and rifampicin.
Notably, amoxicillin, oxacillin, and streptomycin had average minimum inhibitory concentrations of 132.6, 603.4,
and 23.1 μg/mL against V. vulnificus, respectively. These observations provide new insights regarding the necessity
for sanitation of commercial fisheries and can potentially, help reduce the risk posed by fisheries contaminated with
bacteria resistant to antimicrobials.

Keyword : Antimicrobial resistance, Minimum inhibitory concentration, Vibrio vulnificus, Virulence gene

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