Colistin Susceptibility and Plasmid Mediated mcr-1 Gene Prevalance among Multi Drug Resistant Clinical Isolates of Escherichia coli, Kebsiella pneumoniae and Pseudomonas aeruginosa - A Hospital Based Cross Sectional Study
Introduction: The treatment options for multi drug resistant (MDR) and extensively drug resistant (XDR) Gram negative bacterial infections are limited. Colistin based combination therapy remains the last option for such infections. The emerging resistance to colistin, especially the transferrab...
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ADICHUNCHANAGIRI INSTITUTE OF MEDICAL SCIENCES
2025-03-01
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| Series: | Journal of Medical Sciences and Health |
| Online Access: | https://jmsh.ac.in/articles/colistin-susceptibility-and-plasmid-mediated-mcr-1-gene-prevalance-among-multi-drug-resistant-clinical-isolates-of-escherichia-coli-kebsiella-pneumoniae-and-pseudomonas-aeruginosa-a-hospital-based-cross-sectional-study |
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| author | Nivetha Subramanian Mangaiyarkarasi Thiyagarajan Udhayasankar Ranganathan Sunil S Shivekar R Gopal |
| author_facet | Nivetha Subramanian Mangaiyarkarasi Thiyagarajan Udhayasankar Ranganathan Sunil S Shivekar R Gopal |
| author_sort | Nivetha Subramanian |
| collection | DOAJ |
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Introduction: The treatment options for multi drug resistant (MDR) and extensively drug resistant (XDR) Gram negative bacterial infections are limited. Colistin based combination therapy remains the last option for such infections. The emerging resistance to colistin, especially the transferrable mcr-1 gene mediated resistance poses a global threat. Objectives: This study aims to determine the colistin susceptibility among the multi drug resistant (MDR) clinical isolates of Escherichia coli, Kebsiella pneumoniae and Pseudomonas aeruginosa and also to determine the prevalence of mcr-1 gene in the plasmids of colistin resistant isolates. Materials And Methods: This cross-sectional hospital-based study was conducted in 2021. Colistin broth disk elution and colistin agar dilution methods were used to determine the colistin susceptibility of MDR clinical isolates. Plasmid DNA was isolated from colistin-resistant isolates by alkaline lysis, and conventional PCR was performed to detect the mcr-1 gene. Statistical Analysis: Statistical analysis was performed using SPSS software version 2.7. The results are presented in tables and charts. Results: In total, 124 MDR isolates were included in this study. Among the 124 isolates, 12 (9.6%) were found to be resistant to colistin using phenotypic methods. PCR for plamid mediated mcr-1 gene was negative in all 12 MDR isolates. Conclusion: Colistin resistance is relatively less among the MDR clinical isolates in our study. Transferable colistin resistance due mcr-1 gene mutation is not detected among colistin resistant isolates. Hence, colistin can be used with caution adapting the national and international guidelines in situations where most of the other antibiotics are resistant.
KEY WORDS: Multi drug resistance, Colistin, Colistin broth disk elution, Colistin agar dilution, mcr-1 Gene. |
| format | Article |
| id | doaj-art-74d9f4cbaa3a495fa63a8e98d122f4f8 |
| institution | Kabale University |
| issn | 2394-9481 2394-949X |
| language | English |
| publishDate | 2025-03-01 |
| publisher | ADICHUNCHANAGIRI INSTITUTE OF MEDICAL SCIENCES |
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| series | Journal of Medical Sciences and Health |
| spelling | doaj-art-74d9f4cbaa3a495fa63a8e98d122f4f82025-08-20T03:40:14ZengADICHUNCHANAGIRI INSTITUTE OF MEDICAL SCIENCESJournal of Medical Sciences and Health2394-94812394-949X2025-03-0110329430010.46347/jmsh.v10.i3.24.248Colistin Susceptibility and Plasmid Mediated mcr-1 Gene Prevalance among Multi Drug Resistant Clinical Isolates of Escherichia coli, Kebsiella pneumoniae and Pseudomonas aeruginosa - A Hospital Based Cross Sectional StudyNivetha SubramanianMangaiyarkarasi ThiyagarajanUdhayasankar RanganathanSunil S ShivekarR Gopal Introduction: The treatment options for multi drug resistant (MDR) and extensively drug resistant (XDR) Gram negative bacterial infections are limited. Colistin based combination therapy remains the last option for such infections. The emerging resistance to colistin, especially the transferrable mcr-1 gene mediated resistance poses a global threat. Objectives: This study aims to determine the colistin susceptibility among the multi drug resistant (MDR) clinical isolates of Escherichia coli, Kebsiella pneumoniae and Pseudomonas aeruginosa and also to determine the prevalence of mcr-1 gene in the plasmids of colistin resistant isolates. Materials And Methods: This cross-sectional hospital-based study was conducted in 2021. Colistin broth disk elution and colistin agar dilution methods were used to determine the colistin susceptibility of MDR clinical isolates. Plasmid DNA was isolated from colistin-resistant isolates by alkaline lysis, and conventional PCR was performed to detect the mcr-1 gene. Statistical Analysis: Statistical analysis was performed using SPSS software version 2.7. The results are presented in tables and charts. Results: In total, 124 MDR isolates were included in this study. Among the 124 isolates, 12 (9.6%) were found to be resistant to colistin using phenotypic methods. PCR for plamid mediated mcr-1 gene was negative in all 12 MDR isolates. Conclusion: Colistin resistance is relatively less among the MDR clinical isolates in our study. Transferable colistin resistance due mcr-1 gene mutation is not detected among colistin resistant isolates. Hence, colistin can be used with caution adapting the national and international guidelines in situations where most of the other antibiotics are resistant. KEY WORDS: Multi drug resistance, Colistin, Colistin broth disk elution, Colistin agar dilution, mcr-1 Gene.https://jmsh.ac.in/articles/colistin-susceptibility-and-plasmid-mediated-mcr-1-gene-prevalance-among-multi-drug-resistant-clinical-isolates-of-escherichia-coli-kebsiella-pneumoniae-and-pseudomonas-aeruginosa-a-hospital-based-cross-sectional-study |
| spellingShingle | Nivetha Subramanian Mangaiyarkarasi Thiyagarajan Udhayasankar Ranganathan Sunil S Shivekar R Gopal Colistin Susceptibility and Plasmid Mediated mcr-1 Gene Prevalance among Multi Drug Resistant Clinical Isolates of Escherichia coli, Kebsiella pneumoniae and Pseudomonas aeruginosa - A Hospital Based Cross Sectional Study Journal of Medical Sciences and Health |
| title | Colistin Susceptibility and Plasmid Mediated mcr-1 Gene Prevalance among Multi Drug Resistant Clinical Isolates of Escherichia coli, Kebsiella pneumoniae and Pseudomonas aeruginosa - A Hospital Based Cross Sectional Study |
| title_full | Colistin Susceptibility and Plasmid Mediated mcr-1 Gene Prevalance among Multi Drug Resistant Clinical Isolates of Escherichia coli, Kebsiella pneumoniae and Pseudomonas aeruginosa - A Hospital Based Cross Sectional Study |
| title_fullStr | Colistin Susceptibility and Plasmid Mediated mcr-1 Gene Prevalance among Multi Drug Resistant Clinical Isolates of Escherichia coli, Kebsiella pneumoniae and Pseudomonas aeruginosa - A Hospital Based Cross Sectional Study |
| title_full_unstemmed | Colistin Susceptibility and Plasmid Mediated mcr-1 Gene Prevalance among Multi Drug Resistant Clinical Isolates of Escherichia coli, Kebsiella pneumoniae and Pseudomonas aeruginosa - A Hospital Based Cross Sectional Study |
| title_short | Colistin Susceptibility and Plasmid Mediated mcr-1 Gene Prevalance among Multi Drug Resistant Clinical Isolates of Escherichia coli, Kebsiella pneumoniae and Pseudomonas aeruginosa - A Hospital Based Cross Sectional Study |
| title_sort | colistin susceptibility and plasmid mediated mcr 1 gene prevalance among multi drug resistant clinical isolates of escherichia coli kebsiella pneumoniae and pseudomonas aeruginosa a hospital based cross sectional study |
| url | https://jmsh.ac.in/articles/colistin-susceptibility-and-plasmid-mediated-mcr-1-gene-prevalance-among-multi-drug-resistant-clinical-isolates-of-escherichia-coli-kebsiella-pneumoniae-and-pseudomonas-aeruginosa-a-hospital-based-cross-sectional-study |
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