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R plasmid와 bla Gene을 이용한 병원 내 유행 ${\beta}$-lactam 내성 장내세균의 확인
설성용,원준희,김능희,유학선,이유철,조동택,김정완,Seol, Sung-Yong,Won, June-Hee,Kim, Neung-Hee,Yu, Hak-Sun,Lee, Yoo-Chul,Cho, Dong-Taek,Kim, Jung-Wan 대한미생물학회 2001 Journal of Bacteriology and Virology Vol.31 No.3
Clinical isolates of Enterobacteriaceae (189 Klebsiella, 61 Enterobacter, 32 Serratia, 19 E. coli, 7 Proteus, and 3 Citrobacter) from one university hospital were epidemiologically analyzed by using transferable R plasmids resistant ${\beta}$-lactam antibiotics including broad-spectrum cephalosporins. About 30% of E. cloacae and S. marcescens and about 5% of K. pneumoniae were resistant to one or more broad-spectrum ${\beta}$-lactam antibiotics including cefotaxim, ceftazidime, aztreonam, or cefoxitin but all isolates of E. aerogenes, K. oxytoca, and P. mirabilis were susceptible. Thirty-six conjugative R plasmids including 8 plasmids resistant expanded-spectrum cephalosporins were obtained from multiple resistant K. pneumoniae (19), E. cloacae (9), E. coli (4), and C. freundii (1). Thirty-one plasmids were subjected to R plasmid analysis and classified 20 different plasmid types. Among them 5, 2, and 2 plasmids belong to 3 different types respectively showed identical molecular size, endonuclease fragment pattern by Southern hybridization pattern by TEM-1 probe, pI value by isoelctric focusing, and also identical antibiogram and biotype of wild strains harboring plasmids. But all of plasmids resistant to cefotaxim, ceftazidime, aztreonam or cefoxitin showed different palsmid anlysis patterns. These results indicate that the epidemic strains of 3 clonal types had been present in this hospital and anlysis using transferable R plasmid and bla gene can be used to discriminate multi-resistant clinical isolates of Enterobacteriaceae.
1998년부터 2000년 사이 경북지역 농장의 돼지로부터 분리한 Salmonella enterica Serovar Typhimurium의 역학조사
설성용(Sung-Yong Seol),김기영(Ki-Young Kim),정영숙(Young-Sook Jeong),강희영(Hee-Young Kang),유학선(Hak-Sun Yu),김봉환(Bong-Hwan Kim),조동택(Dong-Taek Cho),이유철(Yoo-Chul Lee),이제철(Je Chul Lee) 대한미생물학회 2005 Journal of Bacteriology and Virology Vol.35 No.2