Citations 3
In vitro activity of sulbactam-durlobactam against colistin-resistant and/or cefiderocol-non-susceptible, carbapenem-resistant Acinetobacter baumannii collected in U.S. hospitals
Iovleva, Alina , McElheny, Christi L. , Fowler, Erin L., Cober, Eric , Herc, Erica , Arias, César A. , Hill, Carol , Baum, Keri, Fowler, Vance G. , Chambers, Henry F. , Greenwood‐Quaintance, Kerryl E. , Patel, Robin , van Duin, David , Bonomo, Robert A , Doi, Yohei , Hill, Carol , Arias, César A. , Fowler, Vance G. , Patel, Robin , Bonomo, Robert A. , Doi, Yohei
Antimicrobial Agents and Chemotherapy | January 30, 2024 | Volume: 68 | Issue: 3 | Pages: No page available
ABSTRACT The activity of a novel β-lactamase inhibitor combination, sulbactam-durlobactam (SUL-DUR), was tested against 87 colistin-resistant and/or cefiderocol-non-susceptible carbapenem-resistant Acinetobacter baumannii clinical isolates collected from U.S. hospitals between 2017 and 2019. Among them, 89% and 97% were susceptible to SUL-DUR and imipenem plus SUL-DUR, with MIC 50 /MIC 90 values of 2 µg/mL/8 µg/mL and 1 µg/mL/4 µg/mL, respectively. The presence of amino acid substitutions in penicillin-binding protein 3, including previously reported A515V or T526S, was associated with SUL-DUR non-susceptibility.
Clinical Outcomes and Bacterial Characteristics of Carbapenem-resistant Acinetobacter baumannii Among Patients From Different Global Regions
Wang, Minggui , Ge, Lizhao , Chen, Liang , Komarow, Lauren , Hanson, Blake , Cober, Eric , Alenazi, Thamer H. , Xie, Qing , Liu, Zhengyin , Li, Lanjuan , Yu, Yunsong , Gao, Hainv , Figueroa, Jairo, Herc, Erica , Córdova, Ezequiel , Weston, Gregory , Kaye, Keith S. , Dhar, Sorabh , Munita, José M. , Salata, Robert A. , Vilchez, Samuel, Stryjewski, Martín E. , Iovleva, Alina , Evans, Scott , Baum, Keri, Hill, Carol , Kreiswirth, Barry N. , Patel, Robin , Arias, Cesar A, Chambers, Henry F. , Fowler, Vance G. , Satlin, Michael J. , Investigators, Multi-Drug Resistant Organism Network, Zhang, Fujie , Castelnuovo, Valentina Di, Gutierrez, Jose Millan Oñate, Evans, Beth , Cross, H. R. , Arias, Rebekka M. , Fowler, Vance G, Ordóñez, Karen , Li, Linghua , Kreiswirth, Barry N , Desai, Samit, Rioseco, María Luisa, Vilchez, Samuel, Sánchez, Marisa , Valderrama, Sandra , Figueroa, Jairo, Arias, Cesar A, Dinh, An Q , Panesso, Diane, Rydell, Kirsten, Tran, Truc T. , Jiang, Jianping , Xu, Xiaogang , Spencer, María, Marshall, Steven H. , Rudin, Susan D., Greenwood-Quaintance, Kerry, Schmidt-Malan, Suzannah M., Revolinski, Sara , Wortmann, Glenn , Kalayjian, Robert C. , Ostrowsky, Belinda , Patel, Gopi , Eiras, Daniel , Garcia-Diaz, Julia, Farrell, John J. , Paterson, David L, Kaye, Keith S, Waters, Mary Jo, Eilertson, Brandon , Ng, Oon Tek , De, Partha Pratim, Chew, Kean Lee , Smitasin, Nares , Gallagher, Jason C , Leroi, Marcel , McCarty, Todd P , Lautenbach, Ebbing , Hanson, Blake, Perez, Federico, Banerjee, Ritu , Dhar, Sorabh, Westblade, Lars F. , Yu, Yunsong , Cordova, Ezequiel , Kaye, Keith S , Evans, Scott R , Patel, Robin , van Duin, David , Pérez, Federico , Jiang, Jianping , Chen, Liang , Wang, Minggui , Munita, Jose M , Reyes, Jinnethe , Zong, Zhiyong , Kanj, Souha S. , Tambyah, Paul Anantharajah , Garcia‐Diaz, Julia , Villegas, María Virginia , Kreiswirth, Barry N , Paterson, David L. , Arias, Cesar A, Bonomo, Robert A. , Fowler, Vance G. , Doi, Yohei , Investigators, Multi-Drug Resistant Organism Network, Lok, Judith J. , Richter, Susan, Anderson, Deverick J. , Evans, Beth, Cross, Heather R, Fowler, Vance G, Jacob, Jesse T. , Manca, Claudia , Vilchez, Samuel, Figueroa, Jairo, Arias, Cesar A, Hu, Fupin , Su, Jiachun , Wang, Minggui, Xu, Xiaogang, Yang, Yang, Huskins, W. Charles , Greenwood‐Quaintance, Kerryl E. , Kim, Angela , Garcia-Diaz, Julia, Salcedo, Soraya , Henderson, Andrew , Paterson, David L, Kaye, Keith S, Fries, Bettina C. , Marimuthu, Kalisvar , Peleg, Anton Yariv , Xiao, Yonghong , Garner, Omai B. , Abbo, Lilian M. , Han, Jennifer , Wong, Darren , Hanson, Blake, Díaz, Lorena
Clinical Infectious Diseases | September 22, 2023 | Volume: 78 | Issue: 2 | Pages: 248-258
Abstract Background Carbapenem-resistant Acinetobacter baumannii (CRAb) is 1 of the most problematic antimicrobial-resistant bacteria. We sought to elucidate the international epidemiology and clinical impact of CRAb. Methods In a prospective observational cohort study, 842 hospitalized patients with a clinical CRAb culture were enrolled at 46 hospitals in five global regions between 2017 and 2019. The primary outcome was all-cause mortality at 30 days from the index culture. The strains underwent whole-genome analysis. Results Of 842 cases, 536 (64%) represented infection. By 30 days, 128 (24%) of the infected patients died, ranging from 1 (6%) of 18 in Australia-Singapore to 54 (25%) of 216 in the United States and 24 (49%) of 49 in South-Central America, whereas 42 (14%) of non-infected patients died. Bacteremia was associated with a higher risk of death compared with other types of infection (40 [42%] of 96 vs 88 [20%] of 440). In a multivariable logistic regression analysis, bloodstream infection and higher age-adjusted Charlson comorbidity index were independently associated with 30-day mortality. Clonal group 2 (CG2) strains predominated except in South-Central America, ranging from 216 (59%) of 369 in the United States to 282 (97%) of 291 in China. Acquired carbapenemase genes were carried by 769 (91%) of the 842 isolates. CG2 strains were significantly associated with higher levels of meropenem resistance, yet non-CG2 cases were over-represented among the deaths compared with CG2 cases. Conclusions CRAb infection types and clinical outcomes differed significantly across regions. Although CG2 strains remained predominant, non-CG2 strains were associated with higher mortality. Clinical Trials Registration. NCT03646227.
Carbapenem-Resistant Acinetobacter baumannii in U.S. Hospitals: Diversification of Circulating Lineages and Antimicrobial Resistance
Iovleva, Alina , Mustapha, Mustapha M. , Griffith, M. Patrick , Komarow, Lauren , Luterbach, Courtney , Evans, Daniel R. , Cober, Eric , Richter, Sandra S. , Rydell, Kirsten, Arias, César A. , Jacob, Jesse T. , Salata, Robert A. , Satlin, Michael J. , Wong, Darren , Tyne, Daria Van , Doi, Yohei , Bonomo, Robert A , van Duin, David , Cooper, Vaughn S , Van Tyne, Daria , Doi, Yohei , Jacob, Jesse T , Griffith, Marissa P., Arias, César A. , Bonomo, Robert A.
mBio | March 21, 2022 | Volume: 13 | Issue: 2 | Pages: No page available
Carbapenem-resistant Acinetobacter baumannii (CR Ab ) constitutes a major threat to public health. To elucidate the molecular and clinical epidemiology of CR Ab in the United States, clinical CR Ab isolates were collected along with data on patient characteristics and outcomes, and bacterial isolates underwent whole-genome sequencing and antibiotic susceptibility phenotyping.