미생물학회지 (Korean Journal of Microbiology)

  • 제35권3호
  • /
  • Pages.248-252
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  • 1999
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  • 0440-2413(pISSN)
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  • 2383-9902(eISSN)
한국미생물학회 (The Microbiological Society of Korea)
권호 표지

한국에서 분리된 Vibrio cholerae serovar non-O1 및 non-O139 병독 인자의 분포

Distribution of Virulence Factors of Vibrio cholerae non-O1 and non-O139 Isolated from Korea

  • 성희경 (인제대 부산백병원 임상병리과)
  • 발행 : 1999.09.01
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초록

한국의 환경에서 분리된 47주와 환자 혈액에서 분리된 18주의 Vibrio cholerae serovar non-O1 및 non-O139를 대상으로 하여 콜레라 독소, 콜레라 독소 유전자, 용혈소, 그리고 혈구응집소 등이 병독인자 분포를 알아보았다. 시험된 65균주 중 용혈소만 생산하는 균은 29균주였고, 용혈소와 혈구 응집소를 생산하는 것은 65균주 중 36 균주였다. 용혈소, 콜레라 독소 및 유전자, 그리고 혈구응집소 모두를 가지고 있는 것은 환경에서 분리된 O37형 한 균주이었다. 한편 첨가한 당농도에 따른 혈구응집소 억제시험에서, 1% 이하의 mannose 와 galactose에서 응짐이 억제된 것은 환경분리균주 47 균주 중에서 26균주로 내혈구응집소나 외혈구응집소가 비슷한 비율로 분포하였고, 반면 환자분리균주는 18균주 중에서 5균주가 외혈구응집소의 비율이 훨씬 높았다. 따라서 V.cholerae non-1 및 non-O139의 용혈소가 주독소로 병독인자 분포는 다양하게 나타났다. 콜레라 독소가 유일한 병독이자라고 인식하기는 어려웠고 여러 가지 인자들이 복합적으로 작용될 것으로 생각되었다. 특히 환경분리주 O37 형에서 콜레라 독소 생성윤이 발견된 것을 향후 역학적인 측면에서 많은 연구가 되어야 할 것으로 사료되었다.

The PI-oduction of virulence factors such as cholera toxin, heinolysin and hemagglutinin in V cliolerae non-01 and non-0139 were examined. Among 65 strains isolated from environmental and clinical blood sources, 29 (14.6%) strains produced hemolysin only, 35(53.9%) sh.ains produced both hemolysin and hemagglutinin. From one 037 slrain isolated from environmenl, cholera toxin, ctx gene, hemolysin, and hemagglutinin were detected. All of the strains isolated from clinical and environmental sources showed hemolytic activity against human 0 group e~ythrocytes. In inhibition patterns of heinagglotination, 5 of 18 clinical strains (27.8%) were inhibited by less than 1% mannose and galactose, while, among the 47 environmental isolates. hose paltems by less than 1% mannose and galactose 55.4% wel-e inhibited. Thel-ehre, exohamagglutinin positive rate was high in clinical blood isolates but in environnlental sources, the rate was almost similar lo ihe rate or endohemagglutinin positive. These results indicaled that V cholerae non-01 and non-0139 produced various virnlence factors such as cholera toxin, hemolysin, and hemagglutinin but not a single factor. Further studies are need for epidemiological or bacteriological shtdies of V cholerae 037 isolated from environment.

키워드

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