{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T18:42:50Z","timestamp":1788892970293,"version":"build-2803163510"},"reference-count":42,"publisher":"American Society for Microbiology","issue":"6","license":[{"start":{"date-parts":[[2024,6,25]],"date-time":"2024-06-25T00:00:00Z","timestamp":1719273600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2024,6,25]],"date-time":"2024-06-25T00:00:00Z","timestamp":1719273600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.asm.org\/non-commercial-tdm-license"}],"funder":[{"DOI":"10.13039\/501100001809","name":"MOST | National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["32373069"],"award-info":[{"award-number":["32373069"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]},{"name":"National Natural Science Foundation Youth Found","award":["32102716"],"award-info":[{"award-number":["32102716"]}]}],"content-domain":{"domain":["journals.asm.org"],"crossmark-restriction":true},"short-container-title":["mSphere"],"published-print":{"date-parts":[[2024,6,25]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title\/>\n                    <jats:p>\n                      The appearance and prevalence of multidrug-resistance (MDR) Gram-negative bacteria (GNB) have limited our antibiotic capacity to control bacterial infections. The clinical efficacy of colistin (COL), considered as the \u201clast resort\u201d for treating GNB infections, has been severely hindered by its increased use as well as the emergence and prevalence of mobile colistin resistance (MCR)-mediated acquired drug resistance. Identifying promising compounds to restore antibiotic activity is becoming an effective strategy to alleviate the crisis of increasing MDR. We first demonstrated that the combination of berberine (BBR) and EDTA substantially restored COL sensitivity against COL-resistant\n                      <jats:italic>Salmonella<\/jats:italic>\n                      and\n                      <jats:italic>Escherichia coli<\/jats:italic>\n                      . Molecular docking indicated that BBR can interact with MCR-1 and the efflux pump system AcrAB-TolC, and BBR combined with EDTA downregulated the expression level of\n                      <jats:italic>mcr-1<\/jats:italic>\n                      and\n                      <jats:italic>tolC<\/jats:italic>\n                      . Mechanically, BBR combined with EDTA could increase bacterial membrane damage, inhibit the function of multidrug efflux pump, and promote oxidative damage, thereby boosting the action of COL. In addition, transcriptome analysis found that the combination of BBR and EDTA can accelerate the tricarboxylic acid cycle, inhibit cationic antimicrobial peptide (CAMP) resistance, and attenuate\n                      <jats:italic>Salmonella<\/jats:italic>\n                      virulence. Notably, the combination of BBR and EDTA with COL significantly reduced the bacterial load in the liver and spleen of a mice model infected with\n                      <jats:italic>Salmonella<\/jats:italic>\n                      . Our findings revealed that BBR and EDTA can be used as adjuvants collectively with COL to synergistically reverse the COL resistance of bacteria.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>IMPORTANCE<\/jats:title>\n                    <jats:p>\n                      Colistin is last-resort antibiotic used to treat serious clinical infections caused by MDR bacterial pathogens. The recent emergence of transferable plasmid-mediated COL resistance gene\n                      <jats:italic>mcr-1<\/jats:italic>\n                      has raised the specter of a rapid worldwide spread of COL resistance. Coupled with the fact of barren antibiotic development pipeline nowadays, a critical approach is to revitalize existing antibiotics using antibiotic adjuvants. Our research showed that berberine combined with EDTA effectively reversed COL resistance both\n                      <jats:italic>in vivo<\/jats:italic>\n                      and\n                      <jats:italic>in vitro<\/jats:italic>\n                      through multiple modes of action. The discovery of berberine in combination with EDTA as a new and safe COL adjuvant provides a therapeutic regimen for combating Gram-negative bacteria infections. Our findings provide a potential therapeutic option using existing antibiotics in combination with antibiotic adjuvants and address the prevalent infections caused by MDR Gram-negative pathogens worldwide.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1128\/msphere.00182-24","type":"journal-article","created":{"date-parts":[[2024,5,13]],"date-time":"2024-05-13T09:00:35Z","timestamp":1715590835000},"update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":29,"title":["Restoring colistin sensitivity in colistin-resistant\n                    <i>Salmonella<\/i>\n                    and\n                    <i>Escherichia coli<\/i>\n                    : combinatorial use of berberine and EDTA with colistin"],"prefix":"10.1128","volume":"9","author":[{"given":"Xiao-die","family":"Cui","sequence":"first","affiliation":[{"name":"College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, 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