1 Ocak 2024 Dergi makalesi Açık Erişim

Turkyilmaz, Osman; Darcan, Cihan

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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/283879</identifier>
  <creators>
    <creator>
      <creatorName>Turkyilmaz, Osman</creatorName>
      <givenName>Osman</givenName>
      <familyName>Turkyilmaz</familyName>
      <affiliation>Bilecik Seyh Edebali Univ, Biotechnol Applicat &amp; Res Ctr, Bilecik, Turkiye</affiliation>
    </creator>
    <creator>
      <creatorName>Darcan, Cihan</creatorName>
      <givenName>Cihan</givenName>
      <familyName>Darcan</familyName>
      <affiliation>Bilecik Seyh Edebali Univ, Dept Mol Biol &amp; Genet, Bilecik, Turkiye</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Resistance Mechanism Of &lt;I&gt;Escherichia Coli&lt;/I&gt; Strains With Different Ampicillin Resistance Levels</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2024</publicationYear>
  <dates>
    <date dateType="Issued">2024-01-01</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/283879</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1007/s00253-023-12929-y</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
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  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;Antibiotic resistance is an important problem that threatens medical treatment. Differences in the resistance levels of microorganisms cause great difficulties in understanding the mechanisms of antibiotic resistance. Therefore, the molecular reasons underlying the differences in the level of antibiotic resistance need to be clarified. For this purpose, genomic and transcriptomic analyses were performed on three Escherichia coli strains with varying degrees of adaptive resistance to ampicillin. Whole-genome sequencing of strains with different levels of resistance detected five mutations in strains with 10-fold resistance and two additional mutations in strains with 95-fold resistance. Overall, three of the seven mutations occurred as a single base change, while the other four occurred as insertions or deletions. While it was thought that 10-fold resistance was achieved by the effect of mutations in the ftsI, marAR, and rpoC genes, it was found that 95-fold resistance was achieved by the synergistic effect of five mutations and the ampC mutation. In addition, when the general transcriptomic profiles were examined, it was found that similar transcriptomic responses were elicited in strains with different levels of resistance. This study will improve our view of resistance mechanisms in bacteria with different levels of resistance and provide the basis for our understanding of the molecular mechanism of antibiotic resistance in ampicillin-resistant E. coli strains.Key points center dot The mutation of the ampC promoter may act synergistically with other mutations and lead to higher resistance.center dot Similar transcriptomic responses to ampicillin are induced in strains with different levels of resistance.center dot Low antibiotic concentrations are the steps that allow rapid achievement of high antibiotic resistance.&lt;/p&gt;</description>
  </descriptions>
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