1. Evolution of trimethoprim/sulfamethoxazole resistance in Shewanella algae from the perspective of comparative genomics and global phylogenic analysis
- Author
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Liu Chia-Wei, Jan-Fang Cheng, Kwong-Chung Tung, Yu-Kai Hong, Jyun-Hong Lin, Yu-Hui Lin, Che-An Tsai, Shih-Ping Lin, Yung-Chun Chen, Zhi-Yuan Shi, Yao-Ting Huang, and Po-Yu Liu
- Subjects
Shewanella algae ,Trimethoprim/sulfamethoxazole(TMP/SMX) ,sull ,Class 1 integron ,Microbiology ,QR1-502 - Abstract
Objective: Shewanella algae is a zoonotic marine bacterium that causes a variety of infections in immunocompromised patients or those who have been exposed to seawater. The development of trimethoprim/sulfamethoxazole (TMP/SMX) resistance in S. algae are found in human and environment isolates during the past ten years, and thus the treatment options are decreasing. Methodology: In the study, we conduct a comparative genomic study to identify the resistant mechanism of TMP/SMX-resistance in S. algae. Results: We found the resistance of TMP/SMX in S. algae is associated with the existence of sul1 and dfrA12 within the class 1 integron. The gene cassette dfra12-aadA2-qacEΔ1/sul1 within the class 1 integron is highly conserved. In addition, the class 1 integron and encapsulated sul1 are significantly enriched in Enterobacteriaceae in NCBI and UniProt databases. Conclusion: Our study suggests that the horizontal transfer of TMP/SMX resistance via class 1 integron is most frequently occurred within Enterobacteriaceae and has spread to a wide range of sources including soil, poultry, and marine water.
- Published
- 2022
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