Development and Evaluation of Alternative Methods to Identify the Three Most Common Serotypes of <i>Salmonella enterica</i> Causing Clinical Infections in Kazakhstan
In this study, we aimed to compare the performance of conventional PCR and real-time PCR assays as screening methods for identification of three frequent, clinically significant Salmonella serovars in Kazakhstan. We determined the diagnostic efficacy of three molecular methods for detection of <i...
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oai:doaj.org-article:a9dd2c478df3461fad412cecc80ff95e2021-11-25T18:25:05ZDevelopment and Evaluation of Alternative Methods to Identify the Three Most Common Serotypes of <i>Salmonella enterica</i> Causing Clinical Infections in Kazakhstan10.3390/microorganisms91123192076-2607https://doaj.org/article/a9dd2c478df3461fad412cecc80ff95e2021-11-01T00:00:00Zhttps://www.mdpi.com/2076-2607/9/11/2319https://doaj.org/toc/2076-2607In this study, we aimed to compare the performance of conventional PCR and real-time PCR assays as screening methods for identification of three frequent, clinically significant Salmonella serovars in Kazakhstan. We determined the diagnostic efficacy of three molecular methods for detection of <i>S. enterica</i> subsp. enterica and typing <i>S.</i> Typhimurium, <i>S.</i> Enteritidis, and <i>S.</i> Virchow. A total of 137 clinical samples and 883 food samples were obtained in Almaty in 2018–2019. All tests showed high analytical specificity for detecting <i>S. enterica</i> and its corresponding serovariants (100%). The sensitivity of real-time PCR for each of the tested targets was 1–10 microbial cells and in conventional PCR 10–100 microbial cells. The trials with conventional PCR and real-time PCR had a diagnostic efficacy (DE) of 100% and 99.71%, respectively. The DE of real-time PCR and conventional PCR for detecting <i>S.</i> Enteritidis and <i>S.</i> Typhimurium was 99.90%, while the DE of conventional PCR and real-time PCR for detecting <i>S.</i> Virchow was 99.31% and 99.80%, respectively. The RAPD-PCR analysis of the genomic DNA of <i>Salmonella enterica</i> showed the genetic kinship of <i>S.</i> Enteritidis isolates, and the genetic heterogeneity of <i>S.</i> Typhimurium and <i>S.</i> Virchow isolates. Thus, the developed methods can be considered as alternatives to classical serotyping using antisera.Sabyrkhan M. BarmakYuriy A. SinyavskiyAidar B. BerdygalievTuregeldy Sh. SharmanovIrina S. SavitskayaGulmira T. SultankulovaElena V. ZholdybayevaMDPI AGarticle<i>Salmonella enterica</i><i>S.</i> Typhimurium<i>S.</i> Enteritidis<i>S.</i> VirchowPCRreal-time PCRBiology (General)QH301-705.5ENMicroorganisms, Vol 9, Iss 2319, p 2319 (2021) |
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DOAJ |
language |
EN |
topic |
<i>Salmonella enterica</i> <i>S.</i> Typhimurium <i>S.</i> Enteritidis <i>S.</i> Virchow PCR real-time PCR Biology (General) QH301-705.5 |
spellingShingle |
<i>Salmonella enterica</i> <i>S.</i> Typhimurium <i>S.</i> Enteritidis <i>S.</i> Virchow PCR real-time PCR Biology (General) QH301-705.5 Sabyrkhan M. Barmak Yuriy A. Sinyavskiy Aidar B. Berdygaliev Turegeldy Sh. Sharmanov Irina S. Savitskaya Gulmira T. Sultankulova Elena V. Zholdybayeva Development and Evaluation of Alternative Methods to Identify the Three Most Common Serotypes of <i>Salmonella enterica</i> Causing Clinical Infections in Kazakhstan |
description |
In this study, we aimed to compare the performance of conventional PCR and real-time PCR assays as screening methods for identification of three frequent, clinically significant Salmonella serovars in Kazakhstan. We determined the diagnostic efficacy of three molecular methods for detection of <i>S. enterica</i> subsp. enterica and typing <i>S.</i> Typhimurium, <i>S.</i> Enteritidis, and <i>S.</i> Virchow. A total of 137 clinical samples and 883 food samples were obtained in Almaty in 2018–2019. All tests showed high analytical specificity for detecting <i>S. enterica</i> and its corresponding serovariants (100%). The sensitivity of real-time PCR for each of the tested targets was 1–10 microbial cells and in conventional PCR 10–100 microbial cells. The trials with conventional PCR and real-time PCR had a diagnostic efficacy (DE) of 100% and 99.71%, respectively. The DE of real-time PCR and conventional PCR for detecting <i>S.</i> Enteritidis and <i>S.</i> Typhimurium was 99.90%, while the DE of conventional PCR and real-time PCR for detecting <i>S.</i> Virchow was 99.31% and 99.80%, respectively. The RAPD-PCR analysis of the genomic DNA of <i>Salmonella enterica</i> showed the genetic kinship of <i>S.</i> Enteritidis isolates, and the genetic heterogeneity of <i>S.</i> Typhimurium and <i>S.</i> Virchow isolates. Thus, the developed methods can be considered as alternatives to classical serotyping using antisera. |
format |
article |
author |
Sabyrkhan M. Barmak Yuriy A. Sinyavskiy Aidar B. Berdygaliev Turegeldy Sh. Sharmanov Irina S. Savitskaya Gulmira T. Sultankulova Elena V. Zholdybayeva |
author_facet |
Sabyrkhan M. Barmak Yuriy A. Sinyavskiy Aidar B. Berdygaliev Turegeldy Sh. Sharmanov Irina S. Savitskaya Gulmira T. Sultankulova Elena V. Zholdybayeva |
author_sort |
Sabyrkhan M. Barmak |
title |
Development and Evaluation of Alternative Methods to Identify the Three Most Common Serotypes of <i>Salmonella enterica</i> Causing Clinical Infections in Kazakhstan |
title_short |
Development and Evaluation of Alternative Methods to Identify the Three Most Common Serotypes of <i>Salmonella enterica</i> Causing Clinical Infections in Kazakhstan |
title_full |
Development and Evaluation of Alternative Methods to Identify the Three Most Common Serotypes of <i>Salmonella enterica</i> Causing Clinical Infections in Kazakhstan |
title_fullStr |
Development and Evaluation of Alternative Methods to Identify the Three Most Common Serotypes of <i>Salmonella enterica</i> Causing Clinical Infections in Kazakhstan |
title_full_unstemmed |
Development and Evaluation of Alternative Methods to Identify the Three Most Common Serotypes of <i>Salmonella enterica</i> Causing Clinical Infections in Kazakhstan |
title_sort |
development and evaluation of alternative methods to identify the three most common serotypes of <i>salmonella enterica</i> causing clinical infections in kazakhstan |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doaj.org/article/a9dd2c478df3461fad412cecc80ff95e |
work_keys_str_mv |
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