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Oh J, Shin SH, Choi R, Kim S, Park HD, Kim SY, Han SA, Koh WJ, Lee SY. Assessment of 7 trace elements in serum of patients with nontuberculous mycobacterial lung disease. J Trace Elem Med Biol 2019; 53:84-90. [PMID: 30910213 DOI: 10.1016/j.jtemb.2019.02.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 01/24/2019] [Accepted: 02/11/2019] [Indexed: 02/07/2023]
Abstract
Nontuberculous mycobacterial (NTM) lung diseases are an emerging cause of pulmonary infection, becoming more common in the clinical setting as incidence of NTM lung diseases steadily increases worldwide. Trace elements are essential micronutrients and are known to play many important roles in infectious diseases. We investigated the concentrations of trace elements in patients with NTM lung disease and compared these values to patients with pulmonary tuberculosis and healthy controls. A case-control study was conducted to evaluate the serum trace element concentrations in 95 patients with NTM lung disease, 97 patients with pulmonary tuberculosis, and 99 healthy control subjects. The serum concentrations of 7 trace elements (cobalt, copper, chromium, manganese, molybdenum, selenium, and zinc) were measured using inductively coupled plasma-mass spectrometry. We also analyzed demographic data, clinical outcomes, and other biochemical parameters. The median serum concentrations of copper and molybdenum were higher in patients with NTM lung disease (109 vs. 91 μg/dL, p < 0.001 and 1.70 vs. 0.96 μg/L, p < 0.001). In contrast, the median serum concentrations of selenium and zinc were significantly lower in patients with NTM lung disease than in healthy controls (105 vs. 115 μg/L, p < 0.001 and 94 vs. 102 μg/dL, p < 0.001). Compared to patients with pulmonary tuberculosis, the serum concentrations of molybdenum and zinc were higher in patients with NTM lung disease, while cobalt and copper concentrations were lower (p < 0.001). Correlations among trace element concentrations were observed (copper and zinc, r = -0.367; cobalt and molybdenum, r = -0.360; selenium and zinc, r = 0.335; and manganese and zinc, r = 0.327, respectively). None of the 7 trace elements were associated with treatment outcomes. Patients with NTM lung disease showed different serum trace element concentrations. Our study indicates that altered trace element status is associated with mycobacterial disease. Further study investigating the clinical significance of individual trace elements and their association with nutritional status in patients with NTM lung disease would be required.
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Affiliation(s)
- Jongwon Oh
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Sun Hye Shin
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Rihwa Choi
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; Department of Laboratory Medicine, Green Cross Laboratories, Gyeonggi-do, Republic of Korea
| | - Serim Kim
- Department of Laboratory Medicine, Green Cross Laboratories, Gyeonggi-do, Republic of Korea
| | - Hyung-Doo Park
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Su-Young Kim
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Sun Ae Han
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Won-Jung Koh
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
| | - Soo-Youn Lee
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; Department of Clinical Pharmacology & Therapeutics, Samsung Medical Center, Seoul, Republic of Korea.
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Nurwidya F, Handayani D, Burhan E, Yunus F. Molecular Diagnosis of Tuberculosis. Chonnam Med J 2018; 54:1-9. [PMID: 29399559 PMCID: PMC5794472 DOI: 10.4068/cmj.2018.54.1.1] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 12/19/2017] [Accepted: 12/20/2017] [Indexed: 12/13/2022] Open
Abstract
Tuberculosis (TB) is one of the leading causes of adult death in the Asia-Pacific Region, including Indonesia. As an infectious disease caused by Mycobacterium tuberculosis (MTB), TB remains a major public health issue especially in developing nations due to the lack of adequate diagnostic testing facilities. Diagnosis of TB has entered an era of molecular detection that provides faster and more cost-effective methods to diagnose and confirm drug resistance in TB cases, meanwhile, diagnosis by conventional culture systems requires several weeks. New advances in the molecular detection of TB, including the faster and simpler nucleic acid amplification test (NAAT) and whole-genome sequencing (WGS), have resulted in a shorter time for diagnosis and, therefore, faster TB treatments. In this review, we explored the current findings on molecular diagnosis of TB and drug-resistant TB to see how this advancement could be integrated into public health systems in order to control TB.
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Affiliation(s)
- Fariz Nurwidya
- Department of Pulmonology and Respiratory Medicine, Universitas Indonesia Faculty of Medicine, Persahabatan Hospital, Jakarta, Indonesia
| | - Diah Handayani
- Department of Pulmonology and Respiratory Medicine, Universitas Indonesia Faculty of Medicine, Persahabatan Hospital, Jakarta, Indonesia
| | - Erlina Burhan
- Department of Pulmonology and Respiratory Medicine, Universitas Indonesia Faculty of Medicine, Persahabatan Hospital, Jakarta, Indonesia
| | - Faisal Yunus
- Department of Pulmonology and Respiratory Medicine, Universitas Indonesia Faculty of Medicine, Persahabatan Hospital, Jakarta, Indonesia
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Kim YN, Kim KM, Choi HN, Lee JH, Park HS, Jang KY, Moon WS, Kang MJ, Lee DG, Chung MJ. Clinical Usefulness of PCR for Differential Diagnosis of Tuberculosis and Nontuberculous Mycobacterial Infection in Paraffin-Embedded Lung Tissues. J Mol Diagn 2015; 17:597-604. [DOI: 10.1016/j.jmoldx.2015.04.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 03/29/2015] [Accepted: 04/02/2015] [Indexed: 10/23/2022] Open
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Hwang SH, Kim DE, Sung H, Park BM, Cho MJ, Yoon OJ, Lee DH. Simple Detection of the IS6110 Sequence of Mycobacterium tuberculosis Complex in Sputum, Based on PCR with Graphene Oxide. PLoS One 2015; 10:e0136954. [PMID: 26322510 PMCID: PMC4556190 DOI: 10.1371/journal.pone.0136954] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Accepted: 08/10/2015] [Indexed: 01/07/2023] Open
Abstract
Graphene oxide (GO) has proven to be a satisfactory DNA-sensor platform for applications in enzyme-free signal amplification, fluorescence-based amplification, and nanoparticle-based platforms because of its excellent electrical, thermal, and optical properties. In this study, we designed a novel platform for the fluorescence detection of biomolecules, using a fluorescent dye-labeled primer and GO. We applied this system for the detection of the IS6110 insertion sequence of the Mycobacterium tuberculosis complex (MTB) and evaluated its feasibility for use in molecular diagnostics. Fifty-four sputum specimens were collected at our institution from October 2010 to March 2012. To detect MTB in the samples, we performed PCR amplification of the IS6110 DNA sequence using FAM-labeled primers, after which the PCR amplicon was incubated with GO and the fluorescence was measured. The results were compared with those obtained by conventional real-time quantitative PCR (RQ-PCR). The fluorescence intensity observed increased in a concentration-dependent manner with the FAM-labeled IS6110 amplicon. The results of the PCR-GO system for detecting IS6110 DNA were in good agreement with those obtained with conventional RQ-PCR (kappa statistic = 0.925). The PCR-GO system detected MTB DNA in 23 of 25 RQ-PCR-positive sputum samples (92.0%; 95% CI, 75.0–98.0%), but not in 29 of 29 RQ-PCR-negative sputum samples (100%; 95% CI, 88.1–100.0%). These results indicate the utility of the PCR-GO system in molecular diagnostics.
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Affiliation(s)
- Sang-Hyun Hwang
- Department of Laboratory Medicine, Center for Diagnostic Oncology, Research Institute and Hospital, National Cancer Center, Goyang-si, Gyeinggi-do, 410–769, Republic of Korea
- Hematologic Malignancy Branch, Research Institute and Hospital, National Cancer Center, Goyang-si, Gyeinggi-do, 410–769, Republic of Korea
- * E-mail:
| | - Dong-Eun Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, 143–701, Republic of Korea
| | - Heungsup Sung
- Department of Laboratory Medicine, University of Ulsan College of Medicine and Asan Medical Center, 388–1 Pungnap-dong, Songpa-gu, Seoul, 138–736, Republic of Korea
| | - Byeong-Min Park
- Department of Laboratory Medicine, Center for Diagnostic Oncology, Research Institute and Hospital, National Cancer Center, Goyang-si, Gyeinggi-do, 410–769, Republic of Korea
| | - Mi-Jeong Cho
- Department of Laboratory Medicine, Center for Diagnostic Oncology, Research Institute and Hospital, National Cancer Center, Goyang-si, Gyeinggi-do, 410–769, Republic of Korea
| | - Ok-Jin Yoon
- Department of Laboratory Medicine, Center for Diagnostic Oncology, Research Institute and Hospital, National Cancer Center, Goyang-si, Gyeinggi-do, 410–769, Republic of Korea
| | - Do-Hoon Lee
- Department of Laboratory Medicine, Center for Diagnostic Oncology, Research Institute and Hospital, National Cancer Center, Goyang-si, Gyeinggi-do, 410–769, Republic of Korea
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Cho WH, Won EJ, Choi HJ, Kee SJ, Shin JH, Ryang DW, Suh SP. Comparison of AdvanSure TB/NTM PCR and COBAS TaqMan MTB PCR for Detection of Mycobacterium tuberculosis Complex in Routine Clinical Practice. Ann Lab Med 2015; 35:356-61. [PMID: 25932446 PMCID: PMC4390706 DOI: 10.3343/alm.2015.35.3.356] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 09/05/2014] [Accepted: 01/12/2015] [Indexed: 11/19/2022] Open
Abstract
The AdvanSure tuberculosis/non-tuberculous mycobacterium (TB/NTM) PCR (LG Life Science, Korea) and COBAS TaqMan Mycobacterium tuberculosis (MTB) PCR (Roche Diagnostics, USA) are commonly used in clinical microbiology laboratories. We aimed to evaluate these two commercial real-time PCR assays for detection of MTB in a large set of clinical samples over a two-year period. AdvanSure TB/NTM PCR and COBAS TaqMan MTB PCR were performed on 9,119 (75.2%) and 3,010 (24.8%) of 12,129 (9,728 respiratory and 2,401 non-respiratory) MTB specimens, with 361 (4.0%) and 102 (3.4%) acid-fast bacilli (AFB)-positive results, respectively. In MTB culture, 788 (6.5%) MTB and 514 (4.2%) NTM were identified. The total sensitivity and specificity of the AdvanSure assay were 67.8% (95% confidence interval [CI], 63.9-71.6) and 98.3% (95% CI, 98.0-98.6), while those of the COBAS TaqMan assay were 67.2% (95% CI, 60.0-73.8) and 98.4% (95% CI, 97.9-98.9), respectively. The sensitivities and specificities of the AdvanSure and COBAS TaqMan assays for AFB-positive and AFB-negative samples were comparable. Furthermore, the AdvanSure assay showed fewer invalid results compared with the COBAS TaqMan assay (5.0 vs. 20.4 invalid results/1,000 tests, P<0.001). AdvanSure assay represents a comparable yet more reliable method than COBAS TaqMan for the identification of mycobacteria in routine clinical microbiology.
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Affiliation(s)
- Won-Hyung Cho
- Department of Surgery, Gwangju Veterans Hospital, Gwangju, Korea
| | - Eun-Jeong Won
- Department of Laboratory Medicine, Chonnam National University Medical School and Hospital, Gwangju, Korea
| | - Hyun-Jung Choi
- Department of Laboratory Medicine, Chonnam National University Medical School and Hospital, Gwangju, Korea
| | - Seung-Jung Kee
- Department of Laboratory Medicine, Chonnam National University Medical School and Hospital, Gwangju, Korea
| | - Jong-Hee Shin
- Department of Laboratory Medicine, Chonnam National University Medical School and Hospital, Gwangju, Korea
| | - Dong-Wook Ryang
- Department of Laboratory Medicine, Chonnam National University Medical School and Hospital, Gwangju, Korea
| | - Soon-Pal Suh
- Department of Laboratory Medicine, Chonnam National University Medical School and Hospital, Gwangju, Korea
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Performance of a real-time PCR assay for the rapid identification of Mycobacterium species. J Microbiol 2015; 53:38-46. [PMID: 25557479 DOI: 10.1007/s12275-015-4495-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 10/27/2014] [Accepted: 10/28/2014] [Indexed: 12/22/2022]
Abstract
Mycobacteria cause a variety of illnesses that differ in severity and public health implications. The differentiation of Mycobacterium tuberculosis (MTB) from nontuberculous mycobacteria (NTM) is of primary importance for infection control and choice of antimicrobial therapy. The diagnosis of diseases caused by NTM is difficult because NTM species are prevalent in the environment and because they have fastidious properties. In the present study, we evaluated 279 clinical isolates grown in liquid culture provided by The Catholic University of Korea, St. Vincent's Hospital using real-time PCR based on mycobacterial rpoB gene sequences. The positive rate of real-time PCR assay accurately discriminated 100% (195/195) and 100% (84/84) between MTB and NTM species. Comparison of isolates identified using the MolecuTech REBA Myco-ID(®) and Real Myco-ID® were completely concordant except for two samples. Two cases that were identified as mixed infection (M. intracellulare-M. massiliense and M. avium-M. massiliense co-infection) by PCRREBA assay were only detected using M. abscessus-specific probes by Real Myco-ID(®). Among a total of 84 cases, the most frequently identified NTM species were M. intracellulare (n=38, 45.2%), M. avium (n=18, 23.7%), M. massiliense (n=10, 13.2%), M. fortuitum (n=5, 6%), M. abscessus (n=3, 3.9%), M. gordonae (n=3, 3.9%), M. kansasii (n=2, 2.4%), M. mucogenicum (n=2, 2.4%), and M. chelonae (n= 1, 1.2%). Real Myco-ID(®) is an efficient tool for the rapid detection of NTM species as well as MTB and sensitive and specific and comparable to conventional methods.
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Seo AN, Park HJ, Lee HS, Park JO, Chang HE, Nam KH, Choe G, Park KU. Performance characteristics of nested polymerase chain reaction vs real-time polymerase chain reaction methods for detecting Mycobacterium tuberculosis complex in paraffin-embedded human tissues. Am J Clin Pathol 2014; 142:384-90. [PMID: 25125630 DOI: 10.1309/ajcp2qzrh4znprdd] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
OBJECTIVES Nucleic acid amplification tests on formalin-fixed, paraffin-embedded (FFPE) tissue specimens enable Mycobacterium tuberculosis complex (MTB) detection and rapid tuberculosis diagnosis in the absence of microbiologic culture tests. We aimed to evaluate the efficacy of different polymerase chain reaction (PCR) methods for detecting Mycobacterium species in FFPE tissues. METHODS We examined 110 FFPE specimens (56 nonmycobacterial cases, 32 MTB, and 22 nontuberculous mycobacteria [NTM] determined by acid-fast bacilli [AFB] culture) to assess five PCR methods: nested PCR (N-PCR) (Seeplex MTB Nested ACE Detection; Seegene, Seoul, South Korea), an in-house real-time PCR (RT-PCR) method, and three commercial RT-PCR methods (AccuPower MTB RT-PCR [Bioneer, Seoul, Korea], artus M tuberculosis TM PCR [Qiagen, Hilden, Germany], and AdvanSure tuberculosis/NTM RT-PCR [LG Life Sciences, Seoul, Korea]). RESULTS The results of N-PCR, in-house RT-PCR, and AdvanSure RT-PCR correlated well with AFB culture results (concordance rates, 94.3%, 87.5%, and 89.5%, respectively). The sensitivity of N-PCR (87.5%) was higher than that of the RT-PCR methods, although these differences were not statistically significant between N-PCR and the in-house and AdvanSure RT-PCR methods (68.8% and 80.0%, respectively). All the PCR methods had high specificities, ranging from 98.2% to 100%. Only two NTM cases were detected by AdvanSure RT-PCR, implying a very low sensitivity. CONCLUSIONS Well-designed RT-PCR and N-PCR can effectively identify MTB in FFPE specimens.
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Affiliation(s)
- An Na Seo
- Department of Pathology, Seoul National University Bundang Hospital, Seongnam, Gyeonggido, Republic of Korea
- Department of Pathology, Kyungpook National University School of Medicine, Jung-gu, Daegu, Republic of Korea
| | - Hyo Jin Park
- Department of Pathology, Seoul National University Bundang Hospital, Seongnam, Gyeonggido, Republic of Korea
| | - Hye Seung Lee
- Department of Pathology, Seoul National University Bundang Hospital, Seongnam, Gyeonggido, Republic of Korea
| | - Jung Ok Park
- Department of Pathology, Seoul National University Bundang Hospital, Seongnam, Gyeonggido, Republic of Korea
| | - Ho Eun Chang
- Department of Laboratory Medicine, Seoul National University Bundang Hospital, Seongnam, Gyeonggido, Republic of Korea
| | - Kyung Han Nam
- Department of Pathology, Seoul National University Bundang Hospital, Seongnam, Gyeonggido, Republic of Korea
| | - Gheeyoung Choe
- Department of Pathology, Seoul National University Bundang Hospital, Seongnam, Gyeonggido, Republic of Korea
- Department of Pathology, Seoul National University College of Medicine, Jongnogu, Seoul, Republic of Korea
| | - Kyoung Un Park
- Department of Laboratory Medicine, Seoul National University Bundang Hospital, Seongnam, Gyeonggido, Republic of Korea
- Department of Laboratory Medicine, Seoul National University College of Medicine, Jongnogu, Seoul, Republic of Korea
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Lee H, Park KG, Lee G, Park J, Park YG, Park YJ. Assessment of the quantitative ability of AdvanSure TB/NTM real-time PCR in respiratory specimens by comparison with phenotypic methods. Ann Lab Med 2013; 34:51-5. [PMID: 24422196 PMCID: PMC3885773 DOI: 10.3343/alm.2014.34.1.51] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 04/10/2013] [Accepted: 09/11/2013] [Indexed: 11/23/2022] Open
Abstract
Accurate quantification of mycobacterial load is important to evaluate disease severity and to monitor the course of treatment in tuberculosis (TB). We evaluated the quantitative capability of the AdvanSure TB/NTM real-time PCR kit (LG Life Science, Korea) to determine the cycle threshold (Ct) for mycobacterial burden. We retrospectively analyzed data from 108 patients whose respiratory specimens (sputums and bronchoalveolar lavage fluids) were positive for Mycobacterium tuberculosis complex (85 culture-positive and 23 culture-negative specimens). We compared Ct values with grades of acid-fast bacilli (AFB) staining, semi-quantitative colony count on solid medium, and time to positivity (TTP) in liquid and solid media. We also investigated the cutoff Ct value for predicting stain-positive status. Ct value showed significant reverse correlation with AFB staining grade (rs=-0.635, P<0.01). Ct value significantly decreased as the semi-quantitative counts on the solid medium increased (P<0.001), and the mean Ct value of each of the groups 1+, 2+, 3+, and 4+ were 29.0, 30.0, 27.1, and 25.5, respectively. A weak correlation between Ct value and TTP in liquid and solid media was observed (rs=0.468 and 0.365, respectively). A cutoff Ct value of <33.2 best predicted stain positivity, with a sensitivity of 95.0% and a specificity of 32.0%. Our findings suggest the potential use of AdvanSure TB/NTM real-time PCR kit for quantitatively determining bacterial burden, albeit with some enhancements.
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Affiliation(s)
- Hyeyoung Lee
- Department of Laboratory Medicine, School of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Kang Gyun Park
- Department of Laboratory Medicine, School of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Gundong Lee
- Department of Laboratory Medicine, School of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Joonhong Park
- Department of Laboratory Medicine, School of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yong-Gyu Park
- Department of Biostatistics, School of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yeon-Joon Park
- Department of Laboratory Medicine, School of Medicine, The Catholic University of Korea, Seoul, Korea
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Hwang SH, Im SG, Sung H, Hah SS, Cong VT, Lee DH, Son SJ, Oh HB. Upconversion nanoparticle-based Förster resonance energy transfer for detecting the IS6110 sequence of Mycobacterium tuberculosis complex in sputum. Biosens Bioelectron 2013; 53:112-6. [PMID: 24135541 DOI: 10.1016/j.bios.2013.09.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 08/28/2013] [Accepted: 09/05/2013] [Indexed: 11/29/2022]
Abstract
Upconversion nanoparticles (UCNPs), which are excited at near-infrared wavelength (980 nm), emit high-energy photons. Since UCNPs display a high signal-to-noise ratio and no photobleaching, they are extremely useful for diagnostic application. In this study, we applied UCNPs for detecting the IS6110 sequence of the Mycobacterium tuberculosis complex (MTBC) and evaluated the feasibility of the system for use in molecular diagnostics. Using biotinylated primers, IS6110 DNA PCR was performed and the PCR amplicon was then mixed with streptavidin-conjugated UCNPs, followed by intercalation with SYTOX Orange dye. Fluorescence detection for the Förster resonance energy transfer (FRET) of the UCNPs (UCNP-FRET) was then performed. The estimated lowest detection by UCNP-FRET was 10(2) copies/μL of IS6110 DNA (157 bp). The kappa agreement of the UCNP-FRET assay with conventional PCR was 0.8464 (95% confidence interval, 0.7442-0.9486) and false-negative results were reduced. Our results demonstrated the successful implementation of the UCNP-FRET system in detecting the IS6110 sequence of the MTBC and its potential application for molecular diagnostics.
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Affiliation(s)
- Sang-Hyun Hwang
- Department of Laboratory Medicine, Center for Diagnostic Oncology, Research Institute and Hospital, National Cancer Center, Goyang-si 410-769, Republic of Korea; Hematologic Malignancy Branch, Research Institute, National Cancer Center, Republic of Korea
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Park JS, Choi JI, Lim JH, Ahn JJ, Jegal Y, Seo KW, Ra SW, Jeon JB, Lee SH, Kim SR, Jeong J. The combination of real-time PCR and HPLC for the identification of non-tuberculous mycobacteria. Ann Lab Med 2013; 33:349-52. [PMID: 24003425 PMCID: PMC3756239 DOI: 10.3343/alm.2013.33.5.349] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 06/11/2013] [Accepted: 07/03/2013] [Indexed: 12/01/2022] Open
Abstract
We used HPLC and AdvanSure real-time PCR (LG Life Sciences, Korea) to retrospectively analyze non-tuberculous mycobacteria (NTM) in 133 clinical specimens. The specimens were culture-positive for NTM and the HPLC method identified 130 strains of mycobacteria from the cultures (97.7%) at the species level. Among the isolates, 48 Mycobacterium. kansasii (36.1%), 39 M. intracellulare (29.3%), 17 M. avium (12.8%), 16 M. abscessus (12.0%), 6 M. fortuitum (4.5%), 2 M. szulgai (1.5%), 2 M. gordonae (1.5%), and 3 unclassified NTM strains (2.3%) were identified. The real-time PCR assay identified 60 NTM-positive specimens (45.1%), 65 negative specimens (48.9%), and 8 M. tuberculosis (TB)-positive specimens (6.0%). The real-time PCR assay is advantageous because of its rapid identification of NTM. However, in our study, the real-time PCR assay showed relatively low sensitivity (45.1%) when using direct specimens including sputum and bronchoalveolar lavage (BAL) fluid. HPLC is useful as it discriminates NTM at the species level, although it is time-consuming and requires specific equipment and technical expertise. A combination of both methods will be helpful for the rapid and accurate identification of mycobacteria in clinical laboratories.
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Affiliation(s)
- Jae Sun Park
- Department of Laboratory Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
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Choi YJ, Kim HJ, Shin HB, Nam HS, Lee SH, Park JS, Park KS, Baek KA. Evaluation of peptide nucleic acid probe-based real-time PCR for detection of Mycobacterium tuberculosis complex and nontuberculous mycobacteria in respiratory specimens. Ann Lab Med 2012; 32:257-63. [PMID: 22779066 PMCID: PMC3384806 DOI: 10.3343/alm.2012.32.4.257] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Revised: 02/17/2012] [Accepted: 05/15/2012] [Indexed: 02/03/2023] Open
Abstract
Background A peptide nucleic acid (PNA) probe-based real-time PCR (PNAqPCR™ TB/NTM detection kit; PANAGENE, Korea) assay has been recently developed for the simultaneous detection of Mycobacterium tuberculosis complex (MTBC) and nontuberculous mycobacteria (NTM) in clinical specimens. The study was aimed at evaluation of the performance of PNA probe-based real-time PCR in respiratory specimens. Methods To evaluate potential cross-reactivity, the extracted DNA specimens from Mycobacterium species and non-mycobacterial species were tested using PNA probe-based real-time PCR assay. A total of 531 respiratory specimens (482 sputum specimens and 49 bronchoalveolar washing fluid specimens) were collected from 230 patients in July and August, 2011. All specimens were analyzed for the detection of mycobacteria by direct smear examination, mycobacterial culture, and PNA probe-based real-time PCR assay. Results In cross-reactivity tests, no false-positive or false-negative results were evident. When the culture method was used as the gold standard test for comparison, PNA probe-based real-time PCR assay for detection of MTBC had a sensitivity and specificity of 96.7% (58/60) and 99.6% (469/471), respectively. Assuming the combination of culture and clinical diagnosis as the standard, the sensitivity and specificity of the new real-time PCR assay for detection of MTBC were 90.6% (58/64) and 99.6% (465/467), respectively. The new real-time PCR for the detection of NTM had a sensitivity and specificity of 69.0% (29/42) and 100% (489/489), respectively. Conclusions The new real-time PCR assay may be useful for the detection of MTBC in respiratory specimens and for discrimination of NTM from MTBC.
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Affiliation(s)
- Young Jin Choi
- Department of Laboratory Medicine, Soonchunhyang University College of Medicine, Cheonan, Korea.
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Kim YK, Uh Y, Lee NS, Cho MY, Eom M, Kim HY. Whole-blood interferon-gamma release assay for diagnosis of tuberculous lymphadenitis. TOHOKU J EXP MED 2011; 224:189-93. [PMID: 21673481 DOI: 10.1620/tjem.224.189] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Tuberculosis remains a major problem for much of the world. Tuberculous lymphadenitis is the most common type of extrapulmonary tuberculosis, although a difficult invasive procedure is required for its diagnosis. We evaluated the usefulness of the whole-blood interferon-gamma release assay (IGRA) for diagnosis of tuberculous lymphadenitis. From January 2008 to October 2010, 108 patients underwent lymph node biopsy and the IGRA concurrently in Wonju Christian Hospital, Yonsei University Wonju College of Medicine. Among the patients, 27 were diagnosed with tuberculous lymphadenitis and 81 were diagnosed with non-tuberculous lymphadenitis. The diagnostic performances of the IGRA were evaluated. The median patient age was 33 years (interquartile range [IQR] 23.5 to 48 years), and 28 (25.9%) patients were male. No patient was administered immunosuppressive agents such as high-dose steroids or underwent chemotherapy within 90 days before the IGRA test. The IGRA was positive in 25 of 27 patients with tuberculous lymphadenitis and in 13 of 81 patients with non-tuberculous lymphadenopathy. Therefore, the sensitivity of IGRA was 92.6% (95% CI, 82.0 to 100), and the specificity was 80.2% (95% CI, 71.4 to 89.1). In the patients with positive IGRA results, the INF-γ concentration was significantly higher in the patients with tuberculous lymphadenitis compared to that in the patients without tuberculous lymphadenitis (15.58 [IQR 6.87 to 45.10] IU/mL versus 0.97 [IQR 0.65 to 2.41] IU/mL, p < 0.001). In conclusion, the IGRA is helpful for the diagnosis of tuberculous lymphadenitis.
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Affiliation(s)
- Young Keun Kim
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
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13
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Cho SY, Kim MJ, Suh JT, Lee HJ. Comparison of diagnostic performance of three real-time PCR kits for detecting Mycobacterium species. Yonsei Med J 2011; 52:301-6. [PMID: 21319350 PMCID: PMC3051208 DOI: 10.3349/ymj.2011.52.2.301] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
PURPOSE PCR is widely used for rapidly and accurately detecting Mycobacterium species. The purpose of this study was to assess the diagnostic performance of three real-time PCR kits and evaluate the concordance with two older PCR methods. MATERIALS AND METHODS Using 128 samples, the five PCR methods were assessed, including an in-house PCR protocol, the COBAS Amplicor MTB, the COBAS TaqMan MTB, the AdvanSure TB/NTM real-time PCR, and the Real-Q M. tuberculosis kit. The discrepant results were further examined by DNA sequencing and using the AdvanSure Mycobacteria Genotyping Chip for complete analysis. RESULTS For Mycobacterium tuberculosis (MTB) detection, all five kits showed 100% matching results (positive; N = 11 and negative; N = 80). In non-tuberculous mycobacterium (NTM) discrimination, the AdvanSure yielded two true-positive outcomes from M. intracellulare and one false positive outcome, while the Real-Q resulted in one true-positive outcome and one false negative outcome for each case and another false negative result using the provided DNA samples. CONCLUSION Real-time PCR, yielded results that were comparable to those of the older PCR methods for detecting MTB. However, there were disagreements among the applied kits in regard to the sample test results for detecting NTM. Therefore, we recommend that additional confirmatory measures such as DNA sequencing should be implemented in such cases, and further research with using a larger numbers of samples is warranted to improve the detection of NTM.
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Affiliation(s)
- Sun Young Cho
- Department of Laboratory Medicine, Kyung Hee University School of Medicine, Seoul, Korea
| | - Min Jin Kim
- Department of Laboratory Medicine, Kyung Hee University School of Medicine, Seoul, Korea
| | - Jin-Tae Suh
- Department of Laboratory Medicine, Kyung Hee University School of Medicine, Seoul, Korea
| | - Hee Joo Lee
- Department of Laboratory Medicine, Kyung Hee University School of Medicine, Seoul, Korea
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Bang HI, Choi TY, Shin JW. Comparison of Ogawa Media, BACTEC MGIT 960 System and TB/NTM Real-Time PCR for DetectingMycobacteriumSpecies. Tuberc Respir Dis (Seoul) 2011. [DOI: 10.4046/trd.2011.71.4.249] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Hae In Bang
- Department of Laboratory Medicine, Soonchunhyang University College of Medicine, Seoul, Korea
| | - Tae Youn Choi
- Department of Laboratory Medicine, Soonchunhyang University College of Medicine, Seoul, Korea
| | - Jeong Won Shin
- Department of Laboratory Medicine, Soonchunhyang University College of Medicine, Seoul, Korea
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15
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Yun EY, Cho SH, Go SI, Baek JH, Kim YE, Ma JE, Lee GD, Cho YJ, Jeong YY, Kim HC, Lee JD, Kim SJ, Hwang YS. Usefulness of Real-time PCR to DetectMycobacterium tuberculosisand Nontuberculous Mycobacteria. Tuberc Respir Dis (Seoul) 2010. [DOI: 10.4046/trd.2010.69.4.250] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Eun Young Yun
- Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Su Hee Cho
- Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Se Il Go
- Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Jong Ha Baek
- Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - You Eun Kim
- Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Jeong Eun Ma
- Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Gi Dong Lee
- Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Yu Ji Cho
- Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Yi Yeong Jeong
- Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
- Gyeongsang Institute of Health Sciences, Gyeongsang National University, Jinju, Korea
| | - Ho Cheol Kim
- Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
- Gyeongsang Institute of Health Sciences, Gyeongsang National University, Jinju, Korea
| | - Jong Deok Lee
- Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
- Gyeongsang Institute of Health Sciences, Gyeongsang National University, Jinju, Korea
| | - Sun-Joo Kim
- Gyeongsang Institute of Health Sciences, Gyeongsang National University, Jinju, Korea
- Department of Laboratory Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Young Sil Hwang
- Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
- Gyeongsang Institute of Health Sciences, Gyeongsang National University, Jinju, Korea
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Lee HS, Lee H, Im S, Lee YS, Lee KY, Choi YJ. Comparison of Various Detection Methods of Mycobacterium Species in Formalin-Fixed Paraffin-Embedded Tissue with Chronic Granulomatous Inflammation. KOREAN JOURNAL OF PATHOLOGY 2010. [DOI: 10.4132/koreanjpathol.2010.44.3.259] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Hyun Seung Lee
- Department of Hospital Pathology, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Hyoungnam Lee
- Department of Hospital Pathology, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Soyoung Im
- Department of Hospital Pathology, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Yun Su Lee
- Department of Hospital Pathology, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Kyo Young Lee
- Department of Hospital Pathology, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Yeong Jin Choi
- Department of Hospital Pathology, The Catholic University of Korea College of Medicine, Seoul, Korea
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