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주외막단백 유전자 분석을 이용한 Brucella abortus의 동정

Identification of Brucella abortus using the sequencing of omp gene

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주제분류내과학

초록

목적 : 브루셀라증은 다양한 임상경과와 비특이적인 증상 및 까다로운 배양 조건 등으로 인하여 진단이 쉽지 않다. 최근 국내에서 발생한 발열 환자의 혈액 배양검사로부터 균주를 분리한 후 유전자 염기서열분석으로 Brucella abortus를 확인하였기에 이를 소개하고자 하였다.방법 : 발열 환자의 혈액배양검사로부터 분리된 미상의 균주로부터 DNA를 추출한 후 16S rRNA에 대한 연쇄중합반응을 시행하였고, 증폭된 결과물을 BLAST search를 통하여 GenBank의 데이터베이스의 염기서열과 비교한 결과 Brucella종임을 확인하였다. 동일한 방법으로 omp2a와 omp2b 유전자에 대한 연쇄중합반응을 시행하여 이를 GenBank의 데이터베이스와 비교하였다.결과 : 16S rRNA 염기서열을 비교하여 세 균주 모두 99.9% 이상의 유사도로 Brucella에 속하는 종임을 확인하였고, omp2a와 omp2b 유전자 염기서열을 비교한 결과 99.91% 이상의 유사도로 세 균주 모두 Brucella abortus임을 확인하였다.

Abstract

Background : As the incidence of bovine brucellosis increases in Korea, the incidence of human brucellosis is also increasing since 2002. However, it is difficult to identify Brucella species by using the conventional methods. Methods : Three strains of gram-negative coccobacilli were isolated from blood specimens of three patients with prolonged fever, which were not identified by using the conventional methods. After extracting total DNA from these isolates, PCR amplification of 16S rRNA and omp2 genes was performed. These sequences secured by PCR assay were compared with known sequences by using GenBank BLAST. Results : DNA sequences were obtained from 3 isolates by using PCR amplification of 16S rRNA. These sequences had more than 99.9% similarities with Brucella species by using GenBank BLAST. In the second place, after comparing DNA sequences secured by PCR amplification of omp2a and omp2b by using GenBank BLAST, these isolates were confirmed as B. abortus. Conclusions : DNA sequence analysis is a rapid and accurate method for identification of uncommon microorganisms, such as Brucella species.(Korean J Med 71:10-16, 2006)

참고문헌 (27)

  1. "Application of a polymerase chain reaction enzyme immunoassay in peripheral whole blood and serum specimens for diagnosis of acute human brucellosis", 23, pp.194~199 (2004)
  2. "국내 브루셀라균에 감염된 환자 1예", 35, pp.461~466 (2003)
  3. "국내 브루셀라증 발생 현황:2002-2004", 16, pp.28~29 (2005)
  4. "Diagnosis of recent and relapsed cases of human brucellosis by PCR assay", 3, pp.5~ (2003)
  5. "Case definition of brucellosis", 46, pp.1~55 (1997)
  6. "Brucellosis", 352, pp.2325~2336 (2005)
  7. "Human brucellosis:a classical infectious disease with persistent diagnostic challenges", 12, pp.207~212 (1999)
  8. "16S ribosomal DNA sequence analysis of a large collection of environmental and clinical unidentifiable bacterial isolates", 38, pp.3623~3630 (2000)
  9. "Identification of coryneform bacterial isolates by ribosomal DNA sequence analysis", 38, pp.1676~1678 (2000)
  10. "How close is close:16S rRNA sequence identity may not be sufficient to guarantee species identity", 42, pp.166~170 (1992)
  11. "Use of BACTEC 9240 blood culture system for detection of brucella melitensis in synovial fluid", 39, pp.738~739 (2001)
  12. "Detection of brucella melitensis by the BacT", Alert automated system and brucella broth culture, 2002, pp.8, 749~752
  13. "Harrison's principles of internal medicine", pp.914~917 (2005), McGraw-Hill
  14. "Detection of brucellae in blood cultures", 37, pp.3437~3442 (1999)
  15. "Diagnostic yield of a PCR assay in focal complications of brucellosis", 39, pp.3743~3746 (2001)
  16. "Rapid diagnosis of human brucellosis by peripheral-blood PCR assay", 35, pp.2927~2930 (1997)
  17. "Isolation of three brucella abortus cell-wall antigens protective in murine experimental brucellosis", pp.367~373 (1980)
  18. "DNA sequence and expression of the 36-kilodalton outer membrane protein gene of brucella abortus", pp.3281~3291 (1989)
  19. "Classification of brucella spp. isolated from marine mammals by DNA polymorphism at the omp2 locus", 3, pp.729~738 (2001)
  20. "DNA polymorphism in the genus brucella.", 2, pp.1089~1100 (2000)
  21. "감염된 가축과의 직접 접촉없이 발생한 브루셀라증 1환례와 축산물부산물 시장에서의 역학조사", 36, pp.170~174 (2004)
  22. "Changing trends in the epidemiology of human brucellosis in California from 1973 to 1992 a shift toward foodborne transmission", pp.1216~1223 (1994)
  23. "Specific antibody profile in human brucellosis", pp.131~140 (1992)
  24. "Serologic diagnosis of human brucellosis analysis of 214 cases by agglutination tests and review of the literature", pp.359~372 (1991)
  25. "Cecil textbook of medicine", pp.1889~1890 (2004), Elsevier
  26. "An overview of human brucellosis", 21, pp.283~289 (1995)
  27. "Treatment of human brucellosis with doxycycline plus rifampin or doxycycline plus streptomycin", pp.25~30 (1992)

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