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서해안 수산생물에서 분리한 대장균(Escherichia coli)의 항생제 내성 및 다제 내성 양상 비교
정연겸 ( Yeon Gyeom Jeong ),박보미 ( Bo Mi Park ),김민주 ( Min Ju Kim ),박진일 ( Jin Il Park ),정연중 ( Yeoun Joong Jung ),오은경 ( Eun Gyoung Oh ) 한국수산과학회 2021 한국수산과학회지 Vol.54 No.4
Antimicrobial resistance patterns of Escherichia coli were investigated. Strains were isolated from 310 shellfish, 36 crustaceans, and 12 fish collected off the West Coast of Korea from April 2019 to October 2020. Two hundred and ninety-five E. coli strains were isolated from shellfish, 100 from crustaceans, and 54 from fish. Strains isolated from shellfish showed the highest resistance to ampicillin (27.5%), whereas those from crustaceans were resistant to sulfisoxazole (30.0%) and those from fish were resistant to ampicillin (59.3%) and sulfisoxazole (59.3%). Ceftazidime resistance was observed in strains isolated from short neck and hard clams, whereas gentamicin resistance was observed in strains from fish. Multi-drug resistance was observed in 56 strains (48.7%) isolated from shellfish, 11 (28.2%) from crustaceans and 27 (73.0%) from fish. Depending on the source of isolation, the strains showed specific antimicrobial resistance tendency. Strains isolated from shellfish showed 12 different multi-drug resistance patterns, whereas those from crustaceans showed high resistance (59%) to a single antimicrobial agent and those from fish showed a broad trend of multi-drug resistance to more than eight antimicrobials.
태안군 이원면 육상오염원 배출수에서 분리한 그람음성균의 항생제 내성 특성
박보미 ( Bo Mi Park ),김민주 ( Min Ju Kim ),정연겸 ( Yeon Gyeom Jeong ),박진일 ( Jin Il Park ),유홍식 ( Hong Sik Yu ),오은경 ( Eun Gyoung Oh ) 한국수산과학회 2021 한국수산과학회지 Vol.54 No.4
Fecal contamination levels of discharge water from inland pollution sources were investigated in Iwon-myeon (Taean- gun), South Korea. Gram-negative bacteria were isolated during the investigation and the antimicrobial resistance patterns of the isolates were examined to estimate their impact on the coastal environment. The ranges of total coliform and fecal coliform of 12 samples from four major inland pollution sources were 79-490,000 MPN/100 mL and 2.0-490,000 MPN/100 mL, respectively, with the highest level of fecal contamination at Station No. 3. A total of 137 strains (14 genus) were isolated, of which 86 strains (62.8%) were Enterobacteriaceae. The identified isolates were as follows: Pseudomonas spp. (35 strains), Klebsiella spp. (20 strains), Serratia spp. (20 strains), and Escherichia spp. (19 strains). The isolated Gram-negative bacteria showed the highest antimicrobial resistance to ampicillin (81.8%), followed by amoxicillin/clavulanic acid (64.2%), ceftiofur (61.3%), and cefoxitin (59.1%). Antimicrobials in which less than 10% of isolates showed antimicrobial resistance were ciprofloxacin (3.6%) and gentamicin (2.2%). Resistance to one or more antimicrobials was observed in 121 strains (88.3%) and 84 strains (61.3%) showed a tendency for multiple antimicrobial resistance.