이중 중합효소연쇄반응을 이용한 거대세포바이러스 검출
Detection of Cytomegalovirus by Dual-PCR
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배경:Cytomegalovirus (CMV) 감염은 장기이식 환자뿐만 아니라 면역 저하 환자의 이환 및 사망의 중요한 원인이다. 연구자들은 혈액 검체에서 CMV를 검출하기 위한 이중-중합효소연쇄반응법과 항원 혈증 검사의 결과를 비교하였다. 방법:한양대학병원에서 2002년 2월부터 2005년 5월까지 CMV 검출을 위하여 의뢰된 175개 혈액 검체 결과를 분석하였다. Dual-PCR은 CMV의 late antigen (LA) 및 major immediate early antigen (MIE) 유전자를 동시에 증폭하였고, 항원혈증 검사(Chemicon, Temecula, CA, USA)는 CMV의 lower matrix pp65 항원을 검출하였다. 결과:Dual-PCR의 양성율은 14.3% (25/175), 항원혈증 검사는 13.1% (23/175)이었다. Dual-PCR과 항원혈증 검사의 일치율은 85.1%(149/175), 불일치율은 14.9% (26/175)이였다. 결론:Dual-PCR 검사는 CMV의 조기 검출에 유용한 방법이나, 두 방법간에 불일치율이 높아 항원 혈증 검사와 함께 사용할 것을 추천한다.
Abstract
Background: Cytomegalovirus (CMV) infection is a major cause of morbidity and mortality in transplant recipients and immunocompromised patients. We compared the results of a dual polymerase chain reaction (dual-PCR) and an antigenemia (Ag) test for detection of CMV from blood samples. Methods: Between February 2002 and May 2005, we analyzed 175 blood samples submitted for CMV tests at Hanyang University Hospital. The late antigen (LA) and major immediate early (MIE) genes of CMV were concurrently amplified in the dual-PCR. The lower matrix protein pp65 of CMV was detected for the Ag test (Chemicon, Temecula, CA, USA). Results: The positive rate of the dual-PCR was 14.3% (25/175) and that of the Ag test was 13.1% (23/175). The concordance rate of the dual-PCR and Ag test was 85.1% (149/175), while the discordance rate was 14.9% (26/175). Conclusion: The dual-PCR is a useful method for the early detection of CMV, but we recommend using both the dual-PCR and Ag test for detection of CMV due to a high discordance rate of the two methods.
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