1
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Xu S, Lee I, Kwon SJ, Kim E, Nevo L, Straight L, Murata H, Matyjaszewski K, Dordick JS. Split fluorescent protein-mediated multimerization of cell wall binding domain for highly sensitive and selective bacterial detection. N Biotechnol 2024; 82:54-64. [PMID: 38750815 DOI: 10.1016/j.nbt.2024.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 04/22/2024] [Accepted: 05/08/2024] [Indexed: 05/18/2024]
Abstract
Cell wall peptidoglycan binding domains (CBDs) of cell lytic enzymes, including bacteriocins, autolysins and bacteriophage endolysins, enable highly selective bacterial binding, and thus, have potential as biorecognition molecules for nondestructive bacterial detection. Here, a novel design for a self-complementing split fluorescent protein (FP) complex is proposed, where a multimeric FP chain fused with specific CBDs ((FP-CBD)n) is assembled inside the cell, to improve sensitivity by enhancing the signal generated upon Staphylococcus aureus or Bacillus anthracis binding. Flow cytometry shows enhanced fluorescence on the cell surface with increasing FP stoichiometry and surface plasmon resonance reveals nanomolar binding affinity to isolated peptidoglycan. The breadth of function of these complexes is demonstrated through the use of CBD modularity and the ability to attach enzymatic detection modalities. Horseradish peroxidase-coupled (FP-CBD)n complexes generate a catalytic amplification, with the degree of amplification increasing as a function of FP length, reaching a limit of detection (LOD) of 103 cells/droplet (approximately 0.1 ng S. aureus or B. anthracis) within 15 min on a polystyrene surface. These fusion proteins can be multiplexed for simultaneous detection. Multimeric split FP-CBD fusions enable use as a biorecognition molecule with enhanced signal for use in bacterial biosensing platforms.
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Affiliation(s)
- Shirley Xu
- Department of Chemical and Biological Engineering, and Center for Biotechnology & Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY, USA
| | - Inseon Lee
- Department of Chemical and Biological Engineering, and Center for Biotechnology & Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY, USA
| | - Seok-Joon Kwon
- Department of Chemical and Biological Engineering, and Center for Biotechnology & Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY, USA
| | - Eunsol Kim
- Department of Chemical and Biological Engineering, and Center for Biotechnology & Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY, USA
| | - Liv Nevo
- Department of Chemical and Biological Engineering, and Center for Biotechnology & Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY, USA
| | - Lorelli Straight
- Department of Biology, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY, USA
| | - Hironobu Murata
- Department of Chemistry, Carnegie Mellon University, 5000 Forbes Ave, Pittsburgh, PA, USA
| | | | - Jonathan S Dordick
- Department of Chemical and Biological Engineering, and Center for Biotechnology & Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY, USA; Department of Biology, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY, USA.
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2
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de Souza EV, Réssio RA, Figueiredo KB, de Carvalho ACSR, Ferreira-Machado E, de Carvalho J, Dos Santos Cirqueira C, Navas-Suárez PE, Zwarg T, Ritter JM, de Azevedo Fernandes NCC, Guerra JM. Natural mycobacterium tuberculosis complex infection in a brown howler monkey (Alouatta guariba clamitans) in Brazil. J Med Primatol 2024; 53:e12716. [PMID: 38831476 DOI: 10.1111/jmp.12716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 04/27/2024] [Accepted: 05/28/2024] [Indexed: 06/05/2024]
Abstract
Neotropical primates rarely exhibit active tuberculosis. A brown howler monkey was found injured in an urban area. Histopathology revealed granulomatous inflammation in the lungs, lymph nodes, and liver. Immunohistochemistry and molecular analysis confirmed the presence of Mycobacterium tuberculosis complex. The findings highlight the importance of TB surveillance in nonhuman primates.
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Affiliation(s)
| | | | | | | | - Eduardo Ferreira-Machado
- Pathology Center, Adolfo Lutz Institute, São Paulo, SP, Brazil
- Wildlife Comparative Pathology Laboratory (LAPCOM), Department of Pathology, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | | | | | | | - Ticiana Zwarg
- Wildlife Management and Conservation Center (CeMaCAs), The Fauna Division of the Municipal Secretariat for Green and Environment of the Municipality of São Paulo, São Paulo, Brazil
| | - Jana M Ritter
- Infectious Diseases Pathology Branch, Division of High-Consequence Pathogens and Pathology, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | | | - Juliana Mariotti Guerra
- Pathology Center, Adolfo Lutz Institute, São Paulo, SP, Brazil
- Wildlife Comparative Pathology Laboratory (LAPCOM), Department of Pathology, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
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3
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Nienhold R, Mensah N, Frank A, Graber A, Koike J, Schwab N, Hernach C, Zsikla V, Willi N, Cathomas G, Hamelin B, Graf S, Junt T, Mertz KD. Unbiased screen for pathogens in human paraffin-embedded tissue samples by whole genome sequencing and metagenomics. Front Cell Infect Microbiol 2022; 12:968135. [PMID: 36204644 PMCID: PMC9530700 DOI: 10.3389/fcimb.2022.968135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 08/29/2022] [Indexed: 11/15/2022] Open
Abstract
Identification of bacterial pathogens in formalin fixed, paraffin embedded (FFPE) tissue samples is limited to targeted and resource-intensive methods such as sequential PCR analyses. To enable unbiased screening for pathogens in FFPE tissue samples, we established a whole genome sequencing (WGS) method that combines shotgun sequencing and metagenomics for taxonomic identification of bacterial pathogens after subtraction of human genomic reads. To validate the assay, we analyzed more than 100 samples of known composition as well as FFPE lung autopsy tissues with and without histological signs of infections. Metagenomics analysis confirmed the pathogenic species that were previously identified by species-specific PCR in 62% of samples, showing that metagenomics is less sensitive than species-specific PCR. On the other hand, metagenomics analysis identified pathogens in samples, which had been tested negative for multiple common microorganisms and showed histological signs of infection. This highlights the ability of this assay to screen for unknown pathogens and detect multi-microbial infections which is not possible by histomorphology and species-specific PCR alone.
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Affiliation(s)
- Ronny Nienhold
- Institute of Pathology, Cantonal Hospital Baselland, Liestal, Switzerland
| | - Nadine Mensah
- Institute of Pathology, Cantonal Hospital Baselland, Liestal, Switzerland
| | - Angela Frank
- Institute of Pathology, Cantonal Hospital Baselland, Liestal, Switzerland
| | - Anne Graber
- Institute of Pathology, Cantonal Hospital Baselland, Liestal, Switzerland
| | - Jacqueline Koike
- Institute of Pathology, Cantonal Hospital Baselland, Liestal, Switzerland
| | - Nathalie Schwab
- Institute of Pathology, Cantonal Hospital Baselland, Liestal, Switzerland
| | - Claudia Hernach
- Institute of Pathology, Cantonal Hospital Baselland, Liestal, Switzerland
| | - Veronika Zsikla
- Institute of Pathology, Cantonal Hospital Baselland, Liestal, Switzerland
| | - Niels Willi
- Institute of Pathology, Cantonal Hospital Baselland, Liestal, Switzerland
| | - Gieri Cathomas
- Institute of Pathology, Cantonal Hospital Baselland, Liestal, Switzerland
| | - Baptiste Hamelin
- Institute of Pathology, Cantonal Hospital Baselland, Liestal, Switzerland
| | - Susanne Graf
- Central Laboratory, Cantonal Hospital Baselland, Liestal, Switzerland
| | - Tobias Junt
- Autoimmunity, Transplantation and Inflammation, Novartis Institutes for BioMedical Research (NIBR), Basel, Switzerland
| | - Kirsten D Mertz
- Institute of Pathology, Cantonal Hospital Baselland, Liestal, Switzerland
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4
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Morais FCL, Bello GL, Costi C, Schmid KB, Soares TDS, Barcellos RB, Unis G, Dias CF, da Silva PEA, Rossetti ML. Detection of non-tuberculosus mycobacteria (NTMs) in lung samples using 16S rRNA. Mem Inst Oswaldo Cruz 2022; 117:e220031. [PMID: 35920498 PMCID: PMC9337835 DOI: 10.1590/0074-02760220031] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 07/11/2022] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Non-tuberculous mycobacteria (NTMs) cause diseases known as mycobacteriosis
and are an important cause of morbidity and mortality. The diagnosis of
pulmonary disease caused by NTM is hampered by its clinical similarity with
tuberculosis (TB) and by the lack of an accurate and rapid laboratory
diagnosis. OBJECTIVES Detect DNA from NTMs directly from lung samples using real-time polymerase
chain reaction (qPCR) for amplification of 16S rRNA. Additionally, DNA
sequencing (hsp65 and rpoB genes) was used
to identify the species of MNTs. METHODS A total of 68 sputum samples (54 with suspected NTMs and 14 with TB) from
patients treated at a referral hospital were used. FINDINGS Of these, 27/54 (50%) were qPCR positive for NTMs and 14/14 TB patients
(controls) were qPCR negative with an almost perfect concordance
(Kappa of 0.93) with the Mycobacterium
spp. culture. Sequencing confirmed the presence of NTM in all positive
samples. The most common species was Mycobacterium gordonae
(33%), followed by Mycobacterium abscessus (26%),
Mycobacterium fortuitum (22%), Mycobacterium
avium (15%) and Mycobacterium peregrinum
(4%). MAIN CONCLUSIONS The qPCR technique for detecting NTMs targeting 16S rRNA has the potential
to detect NTMs and rapidly differentiate from Mycobacterium
tuberculosis. However, it is necessary to identify the species
to help in the differential diagnosis between disease and contamination, and
to guide the choice of the therapeutic scheme.
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Affiliation(s)
- Franciele Costa Leite Morais
- Universidade Luterana do Brasil, Programa de Pós-Graduação em Biologia Celular e Molecular Aplicada à Saúde, Canoas, RS, Brasil
| | - Graziele Lima Bello
- Instituto Nacional de Ciência e Tecnologia em Tuberculose, Programa Institutos Nacionais de Ciência e Tecnologia, Porto Alegre, RS, Brasil
| | - Cíntia Costi
- Secretaria da Saúde do Rio Grande do Sul, Centro de Desenvolvimento Científico e Tecnológico, Porto Alegre, RS, Brasil.,Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brasil
| | - Karen Barros Schmid
- Secretaria da Saúde do Rio Grande do Sul, Centro de Desenvolvimento Científico e Tecnológico, Porto Alegre, RS, Brasil.,Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brasil
| | - Tainá Dos Santos Soares
- Universidade Luterana do Brasil, Programa de Pós-Graduação em Biologia Celular e Molecular Aplicada à Saúde, Canoas, RS, Brasil.,Secretaria da Saúde do Rio Grande do Sul, Centro de Desenvolvimento Científico e Tecnológico, Porto Alegre, RS, Brasil
| | - Regina Bones Barcellos
- Secretaria da Saúde do Rio Grande do Sul, Centro de Desenvolvimento Científico e Tecnológico, Porto Alegre, RS, Brasil.,Universidade Federal do Rio de Janeiro, Programa de Pós-Graduação em Clínica Médica, Rio de Janeiro, RJ, Brasil
| | - Gisela Unis
- Secretaria da Saúde do Rio Grande do Sul, Hospital Sanatório Partenon, Porto Alegre, RS, Brasil
| | - Claudia Fontoura Dias
- Secretaria da Saúde do Rio Grande do Sul, Hospital Sanatório Partenon, Porto Alegre, RS, Brasil
| | - Pedro Eduardo Almeida da Silva
- Universidade Federal do Rio Grande, Faculdade de Medicina, Centro de Pesquisas em Microbiologia Médica, Rio Grande, RS, Brasil
| | - Maria Lucia Rossetti
- Universidade Luterana do Brasil, Programa de Pós-Graduação em Biologia Celular e Molecular Aplicada à Saúde, Canoas, RS, Brasil.,Instituto Nacional de Ciência e Tecnologia em Tuberculose, Programa Institutos Nacionais de Ciência e Tecnologia, Porto Alegre, RS, Brasil.,Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brasil
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5
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SARS-CoV-2 Supply Shortages and Tuberculosis Diagnostics: Current Issues Requiring Immediate Solutions. J Clin Microbiol 2021; 59:e0077821. [PMID: 34586893 PMCID: PMC8601221 DOI: 10.1128/jcm.00778-21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The SARS-CoV-2 pandemic has strained manufacturing capacity worldwide, resulting in significant shortages of laboratory supplies both directly and indirectly. Such shortages include probe-based kits for detection of the Mycobacterium tuberculosis complex from positive liquid broth cultures. These shortages and possible loss of this particular assay have consequences for laboratory testing algorithms and public health in the United States. As there are no FDA-approved, commercially available options that currently exist which could immediately fill this gap, laboratories must identify alternatives and plan for modifying current testing algorithms to accommodate this change.
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6
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Peixoto ADS, Montenegro LML, Lima AS, Melo FL, Barbosa Júnior WL, Neves MMC, Ramos JP, Schindler HC, Medeiros ZM. Identification of nontuberculous mycobacteria species by multiplex real-time PCR with high-resolution melting. Rev Soc Bras Med Trop 2020; 53:e20200211. [PMID: 33174954 PMCID: PMC7670742 DOI: 10.1590/0037-8682-0211-2020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 09/02/2020] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION: Nontuberculous mycobacteria (NTM) species, as human pathogens,
are increasing in the world, as is the difficulty of accurately identifying
them. Differential diagnosis, especially between the M.
tuberculosis complex and NTM species, and the characterization
of NTM species is important. This study aimed to evaluate the performance of
a molecular system based on multiplex real-time PCR with high-resolution
melting (HRM) for the identification and differentiation of NTM species of
clinical importance of an endemic area for tuberculosis in northeastern
Brazil. METHODS: The technical protocol of the molecular system was based on multiplex
real-time PCR-HRM, and evaluated the sensitivity and specificity of the
detection of NTM species in mycobacterial clinical isolates from the studied
region. The gold standard method was specific gene sequencing. RESULTS: The sensitivity and specificity of multiplex real-time PCR-HRM modified for
differentiation between NTM and M. tuberculosis were 90%
and 100%, respectively. The PCR-HRM sensitivities for the characterization
of NTM species (M. kansasii, M. abscesses, M. avium, and M.
fortuitum) were 94.59%, 80%, 57.14%, and 54%, respectively.
CONCLUSIONS The multiplex real-time PCR-HRM modified assay has the potential to rapidly
and efficiently identify nontuberculous mycobacteria of clinical importance,
which is crucial for immediate implementation of the appropriate therapy and
thus avoiding complications and sequelae in patients.
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Affiliation(s)
- Aline Dos Santos Peixoto
- Fundação Oswaldo Cruz, Instituto Aggeu Magalhães, Departamento de Imunologia, Recife, PE, Brasil.,Universidade de Pernambuco, Pós-Graduação em Ciências da Saúde, Recife, PE, Brasil
| | | | - Andrea Santos Lima
- Fundação Oswaldo Cruz, Instituto Aggeu Magalhães, Departamento de Imunologia, Recife, PE, Brasil
| | - Fábio Lopes Melo
- Fundação Oswaldo Cruz, Instituto Aggeu Magalhães, Departamento de Parasitologia, Recife, PE, Brasil
| | | | | | - Jesus Pais Ramos
- Centro de Referência Professor Hélio Fraga, Escola Nacional de Saúde Pública, Laboratório Nacional de Referência para Tuberculose, Rio de Janeiro, RJ, Brasil
| | | | - Zulma Maria Medeiros
- Universidade de Pernambuco, Pós-Graduação em Ciências da Saúde, Recife, PE, Brasil.,Fundação Oswaldo Cruz, Instituto Aggeu Magalhães, Departamento de Parasitologia, Recife, PE, Brasil
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7
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Kalaiarasan E, Thangavelu K, Krishnapriya K, Muthuraj M, Jose M, Joseph NM. Diagnostic performance of real time PCR and MALDI-TOF in the detection of nontuberculous mycobacteria from clinical isolates. Tuberculosis (Edinb) 2020; 125:101988. [PMID: 32916384 DOI: 10.1016/j.tube.2020.101988] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 08/20/2020] [Accepted: 08/22/2020] [Indexed: 02/07/2023]
Abstract
This study aimed to evaluate the performance of real-time PCR (qPCR) and MALDI-TOF for accurate and timely detection of nontuberculous mycobacterium (NTM) from clinical isolates. We collected fifty NTM suspected Mycobacteria Growth Indicator Tube (MGIT) cultures and analysed the diagnostic performance of qPCR and VITEK MS using Line Probe Assay (LPA) GenoType CM (Common Mycobacteria) as gold standard. The qPCR assays targeting 16S rRNA, ITS and IS6110 genes were developed for the identification of NTM and Mycobacterium tuberculosis complex (MTBC). LPA GenoType CM, a PCR technique targeting 23S rRNA gene, followed by reverse hybridization and line probe technology identified 90% of Mycobacterium species including M. fortuitum (16%,n = 8), M. intracellulare (10%,n = 5), M. gordonae (10%,n = 5), M. xenopi (4%,n = 2), M. scrofulaceum (4%,n = 2), Mycobacterium additional species (AS) (32%,n = 16) and MTBC (14%,n = 7), qPCR detected 80% of Mycobacterium species (NTM, 66% (n = 33) and MTBC, 14% (n = 7)) and MALDI-TOF, 52% (M. fortuitum (12%,n = 6), M. intracellulare (10%, n = 5), M. simiae (8%,n = 4), M. gordonae (8%,n = 4), and MTBC (14%,n = 7)). Sensitivity of qPCR and MALDI-TOF was 88.9% and 57.8%, respectively with 100% specificity. The combination of qPCR and MALDI-TOF remains an appropriate test for timely diagnosis of Mycobacterium species. This may eventually assist to detect the cases that may have been missed by phenotypic tests and enhance the NTM diagnosis capability to improve effective patient management.
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Affiliation(s)
- Ellappan Kalaiarasan
- Department of Microbiology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Pondicherry, India
| | - Kalpana Thangavelu
- Department of Microbiology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Pondicherry, India
| | - Krishnakumariamma Krishnapriya
- Department of Microbiology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Pondicherry, India
| | - Muthaiah Muthuraj
- Intermediate Reference Laboratory, Government Hospital for Chest Diseases, Pondicherry, India
| | - Maria Jose
- Intermediate Reference Laboratory, Government Hospital for Chest Diseases, Pondicherry, India
| | - Noyal Mariya Joseph
- Department of Microbiology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Pondicherry, India.
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8
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Kim JU, Ryu DS, Cha CH, Park SH. Paradigm for diagnosing mycobacterial disease: direct detection and differentiation of Mycobacterium tuberculosis complex and non-tuberculous mycobacteria in clinical specimens using multiplex real-time PCR. J Clin Pathol 2018; 71:774-780. [PMID: 29559518 DOI: 10.1136/jclinpath-2017-204945] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 02/22/2018] [Accepted: 03/02/2018] [Indexed: 01/27/2023]
Abstract
AIMS Mycobacterium tuberculosis and non-tuberculous mycobacteria (NTM) are clinically different, and the rapid detection and differentiation of M. tuberculosis complex (MTBC) and NTM is crucial for patient management and infection control. Given the slow growth of most pathogenic mycobacteria, nucleic acid amplification assays are excellent tools for direct identification of mycobacteria in clinical specimens. Recently, a multiplex real-time PCR assay was developed that can directly detect 20 mycobacterial species in clinical specimens. Here, we evaluated the diagnostic performance of the assay for diagnosing mycobacterial disease under routine laboratory conditions. METHODS A total of 3334 specimens collected from 1437 patients suspected of tuberculosis infection were subjected to acid-fast bacilli staining, conventional culture and the multiplex real-time PCR assay. To evaluate the sensitivity and specificity of the assay, the overall diagnosis of tuberculosis was defined by positive culture plus medical history, and the 2007 American Thoracic Society and Infectious Disease Society of America diagnostic criteria for NTM disease were applied. RESULTS The sensitivity, specificity, positive predictive value and negative predictive value were 87.5%, 99.6%, 96.1% and 98.5%, respectively, for the detection of MTBC isolates and 53.3%, 99.9%, 95.2%, and 98.9%, respectively, for detecting NTM isolates. CONCLUSIONS Thus, the assay can correctly differentiate between MTBC and NTM isolates in clinical specimens and would be a useful tool for the rapid differentiation of tuberculosis and NTM disease, despite its limited sensitivity for the diagnosis of NTM disease.
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Affiliation(s)
- Jeong-Uk Kim
- Department of Laboratory Medicine, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Dae-Shick Ryu
- Department of Radiology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Choong-Hwan Cha
- Department of Laboratory Medicine, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Seon-Hee Park
- Department of Laboratory Medicine, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
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9
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Culture-Independent Detection of Nontuberculous Mycobacteria in Clinical Respiratory Samples. J Clin Microbiol 2016; 54:2395-8. [PMID: 27413194 DOI: 10.1128/jcm.01410-16] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 07/06/2016] [Indexed: 11/20/2022] Open
Abstract
Culture-based detection of nontuberculous Mycobacteria (NTM) in respiratory samples is time consuming and can be subject to overgrowth by nonmycobacterial bacteria. We describe a single-reaction TaqMan quantitative PCR assay for the direct detection of NTM species in clinical samples that is specific, sensitive, and robust.
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