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소와 돼지도체에서 Yersinia entericolitica의 분리 및 특성
채희선 ( Hee Sun Chae ),김주영 ( Joo Young Kim ),김지은 ( Jee Eun Kim ),양윤모 ( Yun Mo Yang ),진경선 ( Kyung Sun Jin ),신방우 ( Bang Woo Shin ),김선흥 ( Sun Heung Kim ),이정학 ( Jung Hark Lee ) 한국가축위생학회 2008 韓國家畜衛生學會誌 Vol.31 No.2
Yersinia enterocolitica is a zoonotic agent, and to cause food poisoning. This study was carried out to get some basic information for the control of Yersinia infection. A total of 1,680 samples were collected from beef and pork carcasses from January 2006 to December 2007 in Seoul. The isolation rate was higher in pork carcass than in beef carcass. Five(0.59%) Yersinia enterocolitica were isolated from the 840 of beef carcasses, and eighteen(2.14%) were isolated from the 840 of pork carcasses. Among 23 strains, 22 were classified into biotype 1A, and one was biotype 6. In serotyping of Y enterocolitica isolates, 21 strains were untypable (UT), and 2 were O5 and O8 respectively. In PCR, Ail gene was not detected in all of 23 strains that determined non-pathogenic. In antimicrobial susceptibility test, twelve strains(52.2%) of 23 isolates showed the multi-resistant patterns with over 3 drugs. PFGE was performed after the genomic DNA of twenty three isolates, which was digested with Xba I. the 23 isolates showed 12(A~L) PFGE type.
소의 분변과 도체에서 shiga toxin-producing Escherichia coli의 분리와 특성
채희선 ( Hee Sun Chae ),김능희 ( Neung Hee Kim ),한혜진 ( Hye Jin Han ),손홍락 ( Hong Rak Son ),김창기 ( Chang Ki Kim ),김선흥 ( Sun Heung Kim ),이정학 ( Jung Hark Lee ),김종택 ( Jong Taek Kim ) 한국가축위생학회 2009 韓國家畜衛生學會誌 Vol.32 No.3
Shiga toxin (Stx)-producing Escherichia coli (STEC) strains can cause broad spectrum of human disease, including diarrhea, hemorrhagic colitis, and the life-threatening hemolytic uremic colitis (HUS). We examined 868 samples was taken from bovine feces and carcass from January to December 2008 in Seoul. Twenty two (9.5%) shiga toxin -producing Escherichia coli were isolated from the 230 of bovine feces, and two (0.31%) were isolated from the 638 of carcasses. Serotype of E. coli isolates were O157 (10, 41.6%), O26 (10, 41.6%), O111 (1, 4.2%) and UT (3, 12.6%). In PCR, the isolates displayed three different stx gene combination (stx1〔2, 8.4%〕], stx2〔3, 12.6%〕and stx1 and stx2〔19, 87.5%〕). The eaeA and hlyA gene were found in 11 (45.8%) of the 24 strains. Saa gene was present only one strains (4.2%). Toxin typing using reverse passive latex agglutination test showed the same result in VT 1. But it showed different result in VT 2. In antimicrobial susceptibility test, all isolates were sensitive to amikacin, amoxicillin/clavulanic acid, ciprofloxacin and colistin. Eighteen strains (75.0%) of 24 isolates showed the multi-resistant patterns with over 3 drugs. PFGE was performed after the genomic DNA of twenty four isolates was digested with Xba I. the 24 isolates showed 7 (A~G) PFGE type.
수생조류에서 Clostridium botulinum type C에 의한 발증사례
채희선 ( Hee Sun Chae ),김능희 ( Neung Hee Kim ),손홍락 ( Hong Rak Son ),김창기 ( Chang Ki Kim ),김선흥 ( Sun Heung Kim ),이정학 ( Jung Hark Lee ) 한국가축위생학회 2009 韓國家畜衛生學會誌 Vol.32 No.4
Botulism in wild waterfowl has been reported in many areas of the world. In 18 October 2008 to 22, 101 dead wild ducks were found in Anyangcheon. 24 of dead birds were spotbill (Anas poeilorhyncha), 56 were Mallard (Anas platyrhynchos), 18 were green- winged teal (Anas carolinensis) and 3 were others. Clinical sign of the sick birds were flaccid paralysis of the neck. At autopsy, most birds had no specific lesions. Stomach is empty. In the mouse bioassay, Samples of serum and intestinal contents taken from 9 dead birds killed all the injected mice, and their toxicity was neutralized by the antitoxin against C. botulinum type C toxin.
서울지역 길고양이의 Toxoplasma 감염증 실태조사
김능희 ( Neung Hee Kim ),채희선 ( Hee Sun Chae ),한혜진 ( Hye Jin Han ),손홍락 ( Hong Rak Son ),김창기 ( Chang Ki Kim ),김선흥 ( Sun Heung Kim ),이정학 ( Jung Hark Lee ),김철훈 ( Chul Hun Kim ) 한국가축위생학회 2009 韓國家畜衛生學會誌 Vol.32 No.3
Toxoplasma gondii is one of the most common protozoa parasites of human and other warm-blooded animals. Cats and wild felidae play crucial roles in the epidemiology of toxoplasmosis. This study was performed to survey the prevalence of T. gondii infection among stray cats in the Seoul. A total of 422 stray cat blood samples were collected from Seoul area. Positive sera for T. gondii were identified in 56 samples (13.3%) exclusively via the latex agglutination test and the detection no antigen particles among seropositive samples by PCR. The overall infection rate of male stray cats (14.4%) presented as higher than that of female cats (10.7%). This study suggested that T. gondii is widespread in stray cats of Seoul area. It is needed to control urban stray cat population and to reduced the risk of zoonotic transmission of toxolasmosis to other animals and humans.
서울지역의 개와 고양이에서 분리한 Staphylococcus aureus의 항생제 감수성 및 multiplex PCR을 이용한 장독소의 검출
김능희 ( Neung Hee Kim ),채희선 ( Hee Sun Chae ),손홍락 ( Hong Rak Son ),김창기 ( Chang Ki Kim ),김선흥 ( Sun Heung Kim ),이정학 ( Jung Hark Lee ),김철훈 ( Chul Hun Kim ) 한국가축위생학회 2010 韓國家畜衛生學會誌 Vol.33 No.3
The antimicrobial susceptibility of 73 strains of Staphylococcus aureus isolated from dogs and cats was determined against 16 antimicrobial agents. All isolates were susceptible to cephalothin (CF), vancomycin (VA), rifampin (RA), quinupristin-dalfopristin (SYN) and linezolid (LZD), whereas more than 86.3% of the isolates were resistant to penicillin (P). In the case of enterotoxin production, 8.2% of 73 strains produced enterotoxin A and 1 strain produced enterotoxin C. Appropriate protocols for antimicrobial agents and strategies to reduce antimicrobial resistance will need to be investigated in the future.