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)

서지정보

· 발행기관 : 대한병리학회
· 수록지 정보 : Journal of Pathology and Translational Medicine / 44권 / 3호 / 259 ~ 266페이지
· 저자명 : 최영진, 이현승, 이형남, 임소영, 이연수, 이교영

초록

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.

영어초록

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.

참고자료

· 없음