Comparative efficacy of eravacycline and tigecycline in addressing multidrug-resistant Gram-negative bacteria
Abstract The rise in antibiotic resistance among Gram-negative bacteria poses significant challenges to global health. This study evaluates the in vitro efficacy of tigecycline, omadacycline, and eravacycline against clinical isolates harboring the mobile tigecycline resistance genes tet(X4) and tet...
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| Format: | Article |
| Language: | English |
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BioMed Central
2025-03-01
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| Series: | One Health Advances |
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| Online Access: | https://doi.org/10.1186/s44280-025-00072-4 |
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| author | Jing Zhang Hanyu Wang Aoxiao Chen Ning Dong Hongwei Zhou Kewei Li |
| author_facet | Jing Zhang Hanyu Wang Aoxiao Chen Ning Dong Hongwei Zhou Kewei Li |
| author_sort | Jing Zhang |
| collection | DOAJ |
| description | Abstract The rise in antibiotic resistance among Gram-negative bacteria poses significant challenges to global health. This study evaluates the in vitro efficacy of tigecycline, omadacycline, and eravacycline against clinical isolates harboring the mobile tigecycline resistance genes tet(X4) and tet(A). A total of 175 clinical strains collected between 1999 and 2023 were analyzed. Resistance genes, including tet(X4) and tet(A), were determined using Polymerase chain reaction (PCR). Minimum inhibitory concentrations (MICs) were determined using the broth microdilution method. Eravacycline exhibited significantly lower MIC values than those of tigecycline for Escherichia coli carrying tet(X4) (P < 0.0001), despite similar resistance rates. Omadacycline consistently displayed the highest MIC values, indicating reduced potency. In contrast, Klebsiella pneumoniae carrying tet(A) showed higher MIC values for eravacycline than tigecycline. Universal resistance was observed in Enterobacter cloacae carrying tet(A). Eravacycline demonstrated superior in vitro efficacy, particularly against E. coli carrying tet(X4), underscoring its potential as a therapeutic option for multidrug-resistant infections. MIC values should complement resistance rates in clinical decision-making, and further studies are warranted to validate eravacycline’s clinical utility. |
| format | Article |
| id | doaj-art-1b57f5d5c2d9423baa1259abbdf43721 |
| institution | DOAJ |
| issn | 2731-9970 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | BioMed Central |
| record_format | Article |
| series | One Health Advances |
| spelling | doaj-art-1b57f5d5c2d9423baa1259abbdf437212025-08-20T02:40:43ZengBioMed CentralOne Health Advances2731-99702025-03-01311910.1186/s44280-025-00072-4Comparative efficacy of eravacycline and tigecycline in addressing multidrug-resistant Gram-negative bacteriaJing Zhang0Hanyu Wang1Aoxiao Chen2Ning Dong3Hongwei Zhou4Kewei Li5Department of Clinical Laboratory, School of Medicine, The Second Affiliated Hospital of Zhejiang UniversityBeijing Key Laboratory of Detection Technology for Animal Food Safety, College of Veterinary Medicine, China Agricultural UniversityDepartment of Clinical Laboratory, School of Medicine, The Second Affiliated Hospital of Zhejiang UniversitySchool of Public Health, Zhejiang University School of MedicineDepartment of Clinical Laboratory, School of Medicine, The Second Affiliated Hospital of Zhejiang UniversitySchool of Laboratory Medicine and Life Sciences, Wenzhou Medical UniversityAbstract The rise in antibiotic resistance among Gram-negative bacteria poses significant challenges to global health. This study evaluates the in vitro efficacy of tigecycline, omadacycline, and eravacycline against clinical isolates harboring the mobile tigecycline resistance genes tet(X4) and tet(A). A total of 175 clinical strains collected between 1999 and 2023 were analyzed. Resistance genes, including tet(X4) and tet(A), were determined using Polymerase chain reaction (PCR). Minimum inhibitory concentrations (MICs) were determined using the broth microdilution method. Eravacycline exhibited significantly lower MIC values than those of tigecycline for Escherichia coli carrying tet(X4) (P < 0.0001), despite similar resistance rates. Omadacycline consistently displayed the highest MIC values, indicating reduced potency. In contrast, Klebsiella pneumoniae carrying tet(A) showed higher MIC values for eravacycline than tigecycline. Universal resistance was observed in Enterobacter cloacae carrying tet(A). Eravacycline demonstrated superior in vitro efficacy, particularly against E. coli carrying tet(X4), underscoring its potential as a therapeutic option for multidrug-resistant infections. MIC values should complement resistance rates in clinical decision-making, and further studies are warranted to validate eravacycline’s clinical utility.https://doi.org/10.1186/s44280-025-00072-4EravacyclineTigecyclineAntibiotic resistanceTet(X4)Escherichia coliKlebsiella pneumoniae |
| spellingShingle | Jing Zhang Hanyu Wang Aoxiao Chen Ning Dong Hongwei Zhou Kewei Li Comparative efficacy of eravacycline and tigecycline in addressing multidrug-resistant Gram-negative bacteria One Health Advances Eravacycline Tigecycline Antibiotic resistance Tet(X4) Escherichia coli Klebsiella pneumoniae |
| title | Comparative efficacy of eravacycline and tigecycline in addressing multidrug-resistant Gram-negative bacteria |
| title_full | Comparative efficacy of eravacycline and tigecycline in addressing multidrug-resistant Gram-negative bacteria |
| title_fullStr | Comparative efficacy of eravacycline and tigecycline in addressing multidrug-resistant Gram-negative bacteria |
| title_full_unstemmed | Comparative efficacy of eravacycline and tigecycline in addressing multidrug-resistant Gram-negative bacteria |
| title_short | Comparative efficacy of eravacycline and tigecycline in addressing multidrug-resistant Gram-negative bacteria |
| title_sort | comparative efficacy of eravacycline and tigecycline in addressing multidrug resistant gram negative bacteria |
| topic | Eravacycline Tigecycline Antibiotic resistance Tet(X4) Escherichia coli Klebsiella pneumoniae |
| url | https://doi.org/10.1186/s44280-025-00072-4 |
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