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Article Abstract
Background: arbapenem-resistant (CRKP) infections may increase the potential for mortality in kidney transplant (KT) recipients. This study aimed to investigate the clinical features, molecular epidemiology, virulence, and antimicrobial resistance of KP strains from KT patients.
Methods: Strains isolated from KT patients were collected, and antimicrobial susceptibility analysis was verified the Vitek2 compact instrument and the disc diffusion method. In gene expression analysis, carbapenemase genes (KPC-2, OXA-48, IMP, VIM, NDM), capsular genes (K1, K2, K5, K20, K54, K57), and virulence genes (rmpA, rmpA2, aerobactin, peg344) were identified polymerase chain reaction (PCR). Molecular epidemiology was analyzed using multilocus sequence typing (MLST) and minimal spanning trees (MST).
Results: A total of 43 KP isolates were collected from KT patients in this study, and 24 of them were identified as CRKP (55.81%). KPC-2 genes were detected in all of the CRKP strains (100%), and other carbapenemase genes were not detected. Twenty-two strains (91.67%) of CRKP strains were identified as ST11, while 2 (8.33%) were ST15-typing. Finally, two highly virulent strains (both K20-ST268 type) were identified. In addition, the group of CRKP showed a higher deceased kidney donor ratio ( = 0.011), a higher proportion of post-transplant transfers to the ICU ( = 0.037), a higher proportion of late-onset infections (3 months post-transplantation acceptance) (p = 0.007), and high positive rates for the virulence gene ( = 0.01) when comparing the group of carbapenem-sensitive KP.
Conclusion: The resistance rate to carbapenem of KP from KT patients exceeded the regional average with predominant ST typing of ST11. Clinical data were analyzed to derive some high-risk factors for CRKP infection. Therefore, we recommend early prophylactic isolation of transplant patients with high-risk factors for CRKP infection to improve the quality of nosocomial control.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11892498 | PMC |
| http://dx.doi.org/10.2147/IDR.S506794 | DOI Listing |
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