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High resolution melting curve analysis for rapid detection of pyrazinamide resistance in Mycobacterium tuberculosis clinical isolates
Dissertation (MSc)--University of Pretoria, 2017.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2023
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| _version_ | 1867613500162965504 |
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| access_status_str | Open Access |
| author2 | Ismail, Farzanah |
| author_browse | Ismail, Farzanah |
| author_facet | Ismail, Farzanah |
| collection | Thesis |
| dc_rights_str_mv | © 2021 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc)--University of Pretoria, 2017. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/93589 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:37:08.061Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/93589 High resolution melting curve analysis for rapid detection of pyrazinamide resistance in Mycobacterium tuberculosis clinical isolates Ismail, Farzanah farzana.ishmail@gmail.com Ismail, Nazir Ahmed Osman, Fatima Pyrazinamide Tuberculosis High resolution melting curve analysis Drug resistance pncA gene Dissertation (MSc)--University of Pretoria, 2017. Background: Pyrazinamide (PZA) is one of the most important drugs for tuberculosis (TB) treatment, however its susceptibility is not routinely performed. High-resolution melting (HRM) curve analysis has been widely used for many applications. In this study, HRM assay was developed and evaluated for the detection of PZA resistance in Mycobacterium tuberculosis clinical isolates. Methods: Ninety five M. tuberculosis clinical isolates with different susceptibility patterns to anti-TB drugs were used to evaluate this assay. Isolates were phenotypically (Bactec MGIT 960) and genotypically (HRM and pncA gene sequencing) analysed for PZA resistance. Results: Bactec MGIT 960 analysis revealed that 29 of the 95 M. tuberculosis isolates were PZA resistant. In comparison to the Bactec MGIT 960, HRM showed a sensitivity of 47.7% and specificity of 74.6%, PZA resistance was strongly associated with multi-drug resistant (MDR)-TB as it was shown in 79.3% of the MDR isolates included in the study. Conclusion: HRM is simple and useful for screening clinical M. tuberculosis isolates for PZA resistance however further modifications to improve its performance are required. Medical Microbiology MSc Restricted 2023-12-04T07:40:58Z 2023-12-04T07:40:58Z 2015 2015 Dissertation * http://hdl.handle.net/2263/93589 en © 2021 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | Pyrazinamide Tuberculosis High resolution melting curve analysis Drug resistance pncA gene High resolution melting curve analysis for rapid detection of pyrazinamide resistance in Mycobacterium tuberculosis clinical isolates |
| title | High resolution melting curve analysis for rapid detection of pyrazinamide resistance in Mycobacterium tuberculosis clinical isolates |
| title_full | High resolution melting curve analysis for rapid detection of pyrazinamide resistance in Mycobacterium tuberculosis clinical isolates |
| title_fullStr | High resolution melting curve analysis for rapid detection of pyrazinamide resistance in Mycobacterium tuberculosis clinical isolates |
| title_full_unstemmed | High resolution melting curve analysis for rapid detection of pyrazinamide resistance in Mycobacterium tuberculosis clinical isolates |
| title_short | High resolution melting curve analysis for rapid detection of pyrazinamide resistance in Mycobacterium tuberculosis clinical isolates |
| title_sort | high resolution melting curve analysis for rapid detection of pyrazinamide resistance in mycobacterium tuberculosis clinical isolates |
| topic | Pyrazinamide Tuberculosis High resolution melting curve analysis Drug resistance pncA gene |
| url | http://hdl.handle.net/2263/93589 |