{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,9]],"date-time":"2026-07-09T16:07:03Z","timestamp":1783613223843,"version":"3.55.0"},"reference-count":69,"publisher":"Microbiology Society","issue":"12","license":[{"start":{"date-parts":[[2022,12,20]],"date-time":"2022-12-20T00:00:00Z","timestamp":1671494400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/100008762","name":"Genome Canada","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100008762","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/100013062","name":"G\u00e9nome Qu\u00e9bec","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100013062","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2022,12,20]]},"abstract":"<jats:p>The antibiotic formulary is threatened by high rates of antimicrobial resistance (AMR) among enteropathogens. Enteric bacteria are exposed to anaerobic conditions within the gastrointestinal tract, yet little is known about how oxygen exposure influences AMR. The facultative anaerobe <jats:italic>\n                     <jats:named-content content-type=\"species\">\n                        <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"http:\/\/doi.org\/10.1601\/nm.2947\" xlink:type=\"simple\">Vibrio cholerae<\/jats:ext-link>\n                     <\/jats:named-content>\n                  <\/jats:italic> was chosen as a model to address this knowledge gap. We obtained <jats:italic>\n                     <jats:named-content content-type=\"species\">\n                        <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"http:\/\/doi.org\/10.1601\/nm.2947\" xlink:type=\"simple\">V. cholerae<\/jats:ext-link>\n                     <\/jats:named-content>\n                  <\/jats:italic> isolates from 66 cholera patients, sequenced their genomes, and grew them under anaerobic and aerobic conditions with and without three clinically relevant antibiotics (ciprofloxacin, azithromycin, doxycycline). For ciprofloxacin and azithromycin, the minimum inhibitory concentration (MIC) increased under anaerobic conditions compared to aerobic conditions. Using standard resistance breakpoints, the odds of classifying isolates as resistant increased over 10 times for ciprofloxacin and 100 times for azithromycin under anaerobic conditions compared to aerobic conditions. For doxycycline, nearly all isolates were sensitive under both conditions. Using genome-wide association studies, we found associations between genetic elements and AMR phenotypes that varied by oxygen exposure and antibiotic concentrations. These AMR phenotypes were more heritable, and the AMR-associated genetic elements were more often discovered, under anaerobic conditions. These AMR-associated genetic elements are promising targets for future mechanistic research. Our findings provide a rationale to determine whether increased MICs under anaerobic conditions are associated with therapeutic failures and\/or microbial escape in cholera patients. If so, there may be a need to determine new AMR breakpoints for anaerobic conditions.<\/jats:p>","DOI":"10.1099\/mgen.0.000905","type":"journal-article","created":{"date-parts":[[2022,12,5]],"date-time":"2022-12-05T14:18:53Z","timestamp":1670249933000},"source":"Crossref","is-referenced-by-count":12,"title":["Genome-wide association studies reveal distinct genetic correlates and increased heritability of antimicrobial resistance in Vibrio cholerae under anaerobic conditions"],"prefix":"10.1099","volume":"8","author":[{"given":"Ashton","family":"Creasy-Marrazzo","sequence":"first","affiliation":[{"name":"Department of Environmental and Global Health, University of Florida, Gainesville, FL, USA"},{"name":"Departments of Pediatrics, University of Florida, Gainesville, FL, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Morteza M.","family":"Saber","sequence":"additional","affiliation":[{"name":"Department of Microbiology and Immunology, McGill University, Gainesville, FL, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Manasi","family":"Kamat","sequence":"additional","affiliation":[{"name":"Department of Chemistry, University of Florida, Gainesville, FL, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laura S.","family":"Bailey","sequence":"additional","affiliation":[{"name":"Department of Chemistry, University of Florida, Gainesville, FL, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lindsey","family":"Brinkley","sequence":"additional","affiliation":[{"name":"Departments of Pediatrics, University of Florida, Gainesville, FL, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emilee","family":"Cato","sequence":"additional","affiliation":[{"name":"Departments of Pediatrics, University of Florida, Gainesville, FL, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yasmin","family":"Begum","sequence":"additional","affiliation":[{"name":"Infectious Diseases Division (IDD) and Nutrition and Clinical Services Division (NCSD), International Centre for Diarrhoeal Disease Research, Bangladesh (icddr, b), Dhaka, Bangladesh"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Md. 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