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송아지 설사분변으로부터 Shiga toxin-producing Escherichia coli 의 분리 및 특성규명
임금기,강문일,김상기,남경우,박현주,박진량,조경오,이봉주,Lim, Keum-Gi,Kang, Mun-Il,Kim, Snag-Ki,Nam, Kyung-Woo,Park, Hyun-Joo,Park, Jin- Ryang,Cho, Kyoung-Oh,Lee, Bong-Joo 대한수의학회 2006 大韓獸醫學會誌 Vol.46 No.2
Shiga toxin (stx) producing Escherichia coli (STEC) causes various clinical signs in animal and human. In this study, 255 fecal samples from calves showing diarrhea were collected from cattle farms in Chonnam province during the period from January 2005 to July 2005. Twenty six STEC (10%) were isolated from 255 fecal samples by PCR. The isolates displayed three different stx combinations (stx1 [69%], stx1 and stx2 [15%], and stx2 [38%]). The isolates were further studied for virulence associated genes and antimicrobial resistance to define the virulence properties. Intimin (eaeA), enterohemolysin (hlyA), and lipopolysaccharide (rfbE) virulence genes were detected in 6 (23%), 7 (26%), and 1 (3.8%) of the isolates, respectively, by PCR. One isolate possessing rfbE gene was typed as E. coli 0157 : H7 by agglutination test with O and H antisera. All 26 isolates showed susceptibility to amikacin (100%) and the majority of isolates showed high susceptibility to gentamicin (88.5%) and chloramphenicol (73.1%). But all isolates were resistant to penicillin. These results may provide the basic knowledge to establish strategies for the treatment and prevention of enteric disease in calves.
정순욱,한동운,강문일,임금기 한국임상수의학회 1998 한국임상수의학회지 Vol.15 No.1
Two 7 months old Korean native beef calves, which were suspected as ergotisms were referred to the Veterinary Teaching Hospitals Chonnam National University in February 1997. Those showed severe lameness as a result of a dry gangrene of the lower part of both hindlimbs which unilaterally were detached, tail necrosis and retarded growth. On the skin of the extremities of both hindlimbs were clearly appeared indented line, hypertropic granuloma and hemorrhage, from which were isolated gicrosp$\theta$rum gysiNㅁt. On the X-ray views of hindlimbs and the longitudinal sectioned metatarsal bones were not observed any changes of osteomyelitis except slightly increased osteophytes and soft tissue swelling. Clnical and anatomical observations were suggested that these calves were affected by the ergotism.