The serological and genetic diversity of the Leptospira interrogans Icterohaemorrhagiae serogroup circulating in the UK
, , , , oraz | 19 gru 2023
Data publikacji: 19 gru 2023
Zakres stron: 529 - 536
Otrzymano: 12 cze 2023
Przyjęty: 06 lis 2023
DOI: https://doi.org/10.2478/jvetres-2023-0063
Słowa kluczowe
© 2023 Zbigniew Arent et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Introduction
Strains of
Material and Methods
Nineteen such isolates from the United Kingdom – human, domestic and wildlife species – were typed using three monoclonal antibodies (F12 C3, F70 C14 and F70 C24) in an attempt to elucidate their epidemiology. They were further examined by restriction endonuclease analysis (REA), multiple-locus variable-number tandem repeat analysis (MLVA) and lic12008 gene sequence analysis.
Results
Monoclonal antibody F12 C3, which is highly specific for Icterohaemorrhagiae and Copenhageni, confirmed that all the strains belonged to these two serovars. Sixteen strains were identified as Copenhageni and three as Icterohaemorrhagiae serovar. Only one restriction pattern type was identified, thus confirming that REA is not able to discriminate between the Icterohaemorrhagiae and Copenhageni serovars. Variable-number tandem-repeat analysis found three loci with differences in the repeat number, indicating genetic diversity between British isolates. Sequences of the lic12008 gene showed that all isolates identified as the Icterohaemorrhagiae serotype have a single base insertion, in contrast to the same sequences of the Copenhageni serotype.
Conclusion
Copenhageni is the predominant serovar in the Icterohaemorrhagiae serogroup isolated in British Isles. There is a genetic diversity of MLVA patterns of the isolates but no genetic tool used in the study was able to determine serovars.