Altered molecular attributes and antimicrobial resistance patterns of Vibrio cholerae O1 El Tor strains isolated from the cholera endemic regions of India
Author:
Shaw Sreeja1,
Samanta Prosenjit1,
Chowdhury Goutam1,
Ghosh Debjani1,
Dey Tanmoy Kumar12,
Deb Alok Kumar3,
Ramamurthy Thandavarayan1,
Miyoshi Shin-ichi45,
Ghosh Amit1,
Dutta Shanta1,
Mukhopadhyay Asish Kumar1ORCID
Affiliation:
1. Division of Bacteriology ICMR-National Institute of Cholera and Enteric Diseases Kolkata India
2. Department of Chemistry, School of Basic and Applied Sciences Adamas University West Bengal India
3. Division of Epidemiology ICMR-National Institute of Cholera and Enteric Diseases Kolkata India
4. Collaborative Research Centre of Okayama University for Infectious Diseases at ICMR-NICED Kolkata India
5. Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama University Okayama Japan
Abstract
Abstract
Aims
The present study aimed to document the comparative analysis of differential hypervirulent features of Vibrio cholerae O1 strains isolated during 2018 from cholera endemic regions in Gujarat and Maharashtra (Western India) and West Bengal (Eastern India).
Methods and Results
A total of 87 V. cholerae O1 clinical strains from Western India and 48 from Eastern India were analysed for a number of biotypic and genotypic features followed by antimicrobial resistance (AMR) profile. A novel polymerase chain reaction was designed to detect a large fragment deletion in the Vibrio seventh pandemic island II (VSP-II) genomic region, which is a significant genetic feature of the V. cholerae strains that have caused Yemen cholera outbreak. All the strains from Western India belong to the Ogawa serotype, polymyxin B-sensitive, hemolytic, had a deletion in VSP-II (VSP-IIC) region and carried Haitian genetic alleles of ctxB, tcpA and rtxA. Conversely, 14.6% (7/48) of the strains from Eastern India belonged to the Inaba serotype, polymyxin B-resistant, nonhemolytic, harboured VSP-II other than VSP-IIC type, classical ctxB, Haitian tcpA and El Tor rtxA alleles. Resistance to tetracycline and chloramphenicol has been observed in strains from both regions.
Conclusions
This study showed hypervirulent, polymyxin B-sensitive epidemic causing strains in India along with the strains with polymyxin B-resistant and nonhemolytic traits that may spread and cause serious disease outcomes in future.
Significance and impact of the study
The outcomes of this study can help to improve the understanding of the hyperpathogenic property of recently circulating pandemic Vibrio cholerae strains in India. Special attention is also needed for the monitoring of AMR surveillance because V. cholerae strains are losing susceptibility to many antibiotics used as a second line of defence in the treatment of cholera.
Funder
Japan Agency for Medical Research and Development (AMED), Japan
National Institute of Infectious Diseases (NIID), Japan
Indian Council of Medical Research (ICMR), India
Publisher
Oxford University Press (OUP)
Subject
Applied Microbiology and Biotechnology,General Medicine,Biotechnology
Cited by
1 articles.
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