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Validity of bioconjugated silica nanoparticles in comparison with direct smear, culture, and polymerase chain reaction for detection of Mycobacterium tuberculosis in sputum specimens
BACKGROUND: Tuberculosis is a public health problem worldwide, and new easy to perform diagnostic methods with high accuracy are necessary for optimal control of the disease. Recently, fluorescent silica nanoparticles (FSNP) has attracted immense interest for the detection of pathogenic microorganis...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Dove Medical Press
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3218586/ https://www.ncbi.nlm.nih.gov/pubmed/22114503 http://dx.doi.org/10.2147/IJN.S23239 |
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author | Ekrami, Alireza Samarbaf-Zadeh, Ali Reza Khosravi, Azar Zargar, Behrooz Alavi, Mohamad Amin, Mansor Kiasat, Alireza |
author_facet | Ekrami, Alireza Samarbaf-Zadeh, Ali Reza Khosravi, Azar Zargar, Behrooz Alavi, Mohamad Amin, Mansor Kiasat, Alireza |
author_sort | Ekrami, Alireza |
collection | PubMed |
description | BACKGROUND: Tuberculosis is a public health problem worldwide, and new easy to perform diagnostic methods with high accuracy are necessary for optimal control of the disease. Recently, fluorescent silica nanoparticles (FSNP) has attracted immense interest for the detection of pathogenic microorganisms. The aim of this study was to detect Mycobacterium tuberculosis in clinical samples using bioconjugated FSNP compared with microscopic examination, polymerase chain reaction (PCR), nested PCR, and culture as the gold standard. METHODS: In total, 152 sputum specimens were obtained from patients who were suspected to have pulmonary tuberculosis. All samples were examined by the four techniques described. RESULTS: The assay showed 97.1% sensitivity (95% confidence interval [CI] 91–99.2) and 91.35% specificity (CI 78.3–97.1). Furthermore, assays using variable bacterial concentrations indicated that 100 colony forming units/mL of M. tuberculosis could be detected. There were no differences between the results obtained from two types of mouse monoclonal antibody against Hsp-65 and 16 KDa antigens. CONCLUSION: We performed this assay in a large number of clinical samples to confirm the diagnostic specificity and sensitivity of the test and can recommend its application for diagnosis of M. tuberculosis. We believe that this method is more convenient for routine diagnosis of M. tuberculosis in sputum and will be more easily applicable in the field, and with sufficient sensitivity. |
format | Online Article Text |
id | pubmed-3218586 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Dove Medical Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-32185862011-11-23 Validity of bioconjugated silica nanoparticles in comparison with direct smear, culture, and polymerase chain reaction for detection of Mycobacterium tuberculosis in sputum specimens Ekrami, Alireza Samarbaf-Zadeh, Ali Reza Khosravi, Azar Zargar, Behrooz Alavi, Mohamad Amin, Mansor Kiasat, Alireza Int J Nanomedicine Original Research BACKGROUND: Tuberculosis is a public health problem worldwide, and new easy to perform diagnostic methods with high accuracy are necessary for optimal control of the disease. Recently, fluorescent silica nanoparticles (FSNP) has attracted immense interest for the detection of pathogenic microorganisms. The aim of this study was to detect Mycobacterium tuberculosis in clinical samples using bioconjugated FSNP compared with microscopic examination, polymerase chain reaction (PCR), nested PCR, and culture as the gold standard. METHODS: In total, 152 sputum specimens were obtained from patients who were suspected to have pulmonary tuberculosis. All samples were examined by the four techniques described. RESULTS: The assay showed 97.1% sensitivity (95% confidence interval [CI] 91–99.2) and 91.35% specificity (CI 78.3–97.1). Furthermore, assays using variable bacterial concentrations indicated that 100 colony forming units/mL of M. tuberculosis could be detected. There were no differences between the results obtained from two types of mouse monoclonal antibody against Hsp-65 and 16 KDa antigens. CONCLUSION: We performed this assay in a large number of clinical samples to confirm the diagnostic specificity and sensitivity of the test and can recommend its application for diagnosis of M. tuberculosis. We believe that this method is more convenient for routine diagnosis of M. tuberculosis in sputum and will be more easily applicable in the field, and with sufficient sensitivity. Dove Medical Press 2011 2011-11-04 /pmc/articles/PMC3218586/ /pubmed/22114503 http://dx.doi.org/10.2147/IJN.S23239 Text en © 2011 Ekrami et al, publisher and licensee Dove Medical Press Ltd This is an Open Access article which permits unrestricted noncommercial use, provided the original work is properly cited. |
spellingShingle | Original Research Ekrami, Alireza Samarbaf-Zadeh, Ali Reza Khosravi, Azar Zargar, Behrooz Alavi, Mohamad Amin, Mansor Kiasat, Alireza Validity of bioconjugated silica nanoparticles in comparison with direct smear, culture, and polymerase chain reaction for detection of Mycobacterium tuberculosis in sputum specimens |
title | Validity of bioconjugated silica nanoparticles in comparison with direct smear, culture, and polymerase chain reaction for detection of Mycobacterium tuberculosis in sputum specimens |
title_full | Validity of bioconjugated silica nanoparticles in comparison with direct smear, culture, and polymerase chain reaction for detection of Mycobacterium tuberculosis in sputum specimens |
title_fullStr | Validity of bioconjugated silica nanoparticles in comparison with direct smear, culture, and polymerase chain reaction for detection of Mycobacterium tuberculosis in sputum specimens |
title_full_unstemmed | Validity of bioconjugated silica nanoparticles in comparison with direct smear, culture, and polymerase chain reaction for detection of Mycobacterium tuberculosis in sputum specimens |
title_short | Validity of bioconjugated silica nanoparticles in comparison with direct smear, culture, and polymerase chain reaction for detection of Mycobacterium tuberculosis in sputum specimens |
title_sort | validity of bioconjugated silica nanoparticles in comparison with direct smear, culture, and polymerase chain reaction for detection of mycobacterium tuberculosis in sputum specimens |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3218586/ https://www.ncbi.nlm.nih.gov/pubmed/22114503 http://dx.doi.org/10.2147/IJN.S23239 |
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