Distribution of Staphylococcal Enterotoxin Genes among Clinical Isolates
DOI:
https://doi.org/10.3329/bmrcb.v47i1.55797Keywords:
Enterotoxin genes, Superantigens, Polymerase chain reaction, Staphylococcus aureus.Abstract
Background: Staphylococcus aureus is an important pathogen which produces numerous numbers of toxins including enterotoxins those cause many diseases in both human and animal. It is very important to know the extent of distribution of these toxins, as they are concern of public health problems including food poisoning and toxic shock syndrome.
Objective: This study was conducted to estimate the distribution of enterotoxin genes among the clinical isolates of the Staphylococcus aureus by multiplex PCR.
Methods: This cross-sectional study was carried out in the Department of Microbiology& Immunology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka during the period from March 2014 to February 2015. A total 125 isolates of S. aureus from different clinical specimens were identified by standard microbiological methods. Multiplex PCR assay was performed by using standard protocol with specific primers to detect genes for staphylococcal enterotoxins A to E (sea, seb, sec, sed and see) from identified S. aureus isolates.
Results: Out of 125 S. aureus isolates, 63 (50.4%) were enterotoxin genes positive in which the predominant gene was sec, which was present in 36% of tested S. aureus isolates followed by sea (17.6%) and see (13.6%). Multiple enterotoxin genes combination was common in S. aureus isolates and the predominant combination was sea+sec genes. Out of 76 Staphylococcus aureus isolated from indoor patients, 45 (59.2%) were positive for enterotoxin genes which were higher than outdoor patients 18 (36.7%).
Conclusion: The enterotoxin genes are frequently present in S. aureus isolates. The most frequent gene is sec followed by sea and see. Moreover, multiple genes are more commonly present in S. aureus strains which support the strong virulent potential of these strains.
Bangladesh Med Res Counc Bull 2021; 47(1): 90-97
Downloads
5
10
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2021 Fatima Tuj Johora, SM Shahriar Rizvi, Irin Rahman, Nusrat Jahan, Sumaiya Khatun, Ruhul Amin Miah
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms.
Authors retain copyright and grant the journal right of first publication.
Articles in the Bangladesh Medical Research Council Bulletin are licensed under a Creative Commons Attribution 4.0 International License (CC-BY) that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
