만성 육아종성 염증의 파라핀포매 조직에서 다양한 항산균 검출법의 비교
Comparison of Various Detection Methods of Mycobacterium Species in Formalin-Fixed Paraffin-Embedded Tissue with Chronic Granulomatous Inflammation
이현승, 이형남, 임소영, 이연수, 이교영, 최영진,
소속 상세정보
이현승 ( Lee Hyun-Seung )
가톨릭대학교 의과대학 병원병리학교실
이형남 ( Lee Hyoung-Nam )
가톨릭대학교 의과대학 병원병리학교실
임소영 ( Im So-Young )
가톨릭대학교 의과대학 병원병리학교실
이연수 ( Lee Youn-Soo )
가톨릭대학교 의과대학 병원병리학교실
이교영 ( Lee Kyo-Young )
가톨릭대학교 의과대학 병원병리학교실
최영진 ( Choi Yeong-Jin )
가톨릭대학교 의과대학 병원병리학교실
KMID : 0357920100440030259
Abstract
Background: To determine the most effective method for detecting mycobacteria in formalin- fixed paraffin-embedded (FFPE) tissue, we compared the results of Ziehl-Neelsen stain (ZNS) and mycobacterial culture with those of polymerase chain reaction (PCR) and real-time quantitative PCR (RQ-PCR).
Methods: We analyzed 54 cases diagnosed as chronic granulomatous inflammation. In all cases, ZNS and nested PCR using three different primers, IS6110, Mpb64 and IS6110/Rpoβ were done. RQ-PCR with the IS6110/Rpoβ primer was done in 51 cases.
Results: Mycobacteria were identified by ZNS in 15/54 (27.8%) cases. RQ-PCR had the highest sensitivity (80.0%) compared to PCR with IS6110 (73.3%), Mpb64 (60.0%) and IS6110/Rpoβ (73.3%). Specificity was higher in all PCR experiments (79.5-82.1%) than in RQ-PCR (69.4%) experiments. The false negative rate was lowest for RQ-PCR (20.0%) than for PCR with IS6110 (26.7%), Mpb64 (40.0%) and IS6110/Rpoβ (26.7%). The false positive rate was highest for RQ-PCR (30.6%) compared to PCR with IS6110 (20.5%), Mpb64 (17.9%) and IS6110/Rpoβ (20.5%).
Conclusions: RQ-PCR had the highest sensitivity, and the lowest false negative rate, but it also had a higher false positive rate than PCR for detection of mycobacteria in FFPE tissues.
키워드
Polymerase chain reaction;Stain;Mycobacterium;Granulomatous disease;chronic
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