SilverBacteriV1, Main, Corpus, bibRecord, 000B85

Bactericidal mechanism of Ag/Al2O3 against Escherichia coli.

Identifieur interne : 000B85 ( Main/Corpus ); précédent : 000B84; suivant : 000B86

Bactericidal mechanism of Ag/Al2O3 against Escherichia coli.

Auteurs : Qingyun Chang ; Lizhu Yan ; Meixue Chen ; Hong He ; Jiuhui Qu

Source :

Langmuir : the ACS journal of surfaces and colloids [ 0743-7463 ] ; 2007.

RBID : pubmed:17902710

English descriptors

KwdEn :
- Adsorption (MeSH), Aluminum Oxide (pharmacology), Anti-Bacterial Agents (pharmacology), Catalase (pharmacology), Escherichia coli (drug effects), Escherichia coli (metabolism), Escherichia coli (ultrastructure), Formaldehyde (MeSH), Free Radical Scavengers (pharmacology), Microscopy, Electron, Scanning (MeSH), Reactive Oxygen Species (metabolism), Silver (pharmacology), Superoxide Dismutase (pharmacology), Surface Properties (MeSH), Ultraviolet Rays (MeSH).
MESH :
- chemical , metabolism : Reactive Oxygen Species.
- chemical , pharmacology : Aluminum Oxide, Anti-Bacterial Agents, Catalase, Free Radical Scavengers, Silver, Superoxide Dismutase.
- drug effects : Escherichia coli.
- metabolism : Escherichia coli.
- ultrastructure : Escherichia coli.
- Adsorption, Formaldehyde, Microscopy, Electron, Scanning, Surface Properties, Ultraviolet Rays.

Abstract

The bactericidal process of Ag/Al2O3 to Escherichia coli has been investigated to clarify the bactericidal mechanism. In SEM images, the configuration of E. coli cells contacting with the catalyst surface was quite different from that contacting with AgNO3 solution, which indicated that the Ag+ eluted from the catalyst did not play an important role in the bactericidal process. The bactericidal experiments strongly confirmed the contribution of multiform reactive oxygen species (ROS) (super oxide dismutase (SOD) and catalase as the scavengers for O2*- and H2O2, respectively) to bactericidal effect on the catalyst surface. Furthermore, the surface modification of Ag/Al2O3 by ultraviolet and formaldehyde influenced the bactericidal effect obviously, which not only confirmed the bactericidal mechanism of catalytic oxidation but also provided evidence for the synergistic effect between Ag and Al2O3 on the catalyst surface.

DOI: 10.1021/la701006r
PubMed: 17902710

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pubmed:17902710

Le document en format XML

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<author><name sortKey="Chang, Qingyun" sort="Chang, Qingyun" uniqKey="Chang Q" first="Qingyun" last="Chang">Qingyun Chang</name>
<affiliation><nlm:affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</nlm:affiliation>
</affiliation>
</author>
<author><name sortKey="Yan, Lizhu" sort="Yan, Lizhu" uniqKey="Yan L" first="Lizhu" last="Yan">Lizhu Yan</name>
</author>
<author><name sortKey="Chen, Meixue" sort="Chen, Meixue" uniqKey="Chen M" first="Meixue" last="Chen">Meixue Chen</name>
</author>
<author><name sortKey="He, Hong" sort="He, Hong" uniqKey="He H" first="Hong" last="He">Hong He</name>
</author>
<author><name sortKey="Qu, Jiuhui" sort="Qu, Jiuhui" uniqKey="Qu J" first="Jiuhui" last="Qu">Jiuhui Qu</name>
</author>
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<sourceDesc><biblStruct><analytic><title xml:lang="en">Bactericidal mechanism of Ag/Al2O3 against Escherichia coli.</title>
<author><name sortKey="Chang, Qingyun" sort="Chang, Qingyun" uniqKey="Chang Q" first="Qingyun" last="Chang">Qingyun Chang</name>
<affiliation><nlm:affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</nlm:affiliation>
</affiliation>
</author>
<author><name sortKey="Yan, Lizhu" sort="Yan, Lizhu" uniqKey="Yan L" first="Lizhu" last="Yan">Lizhu Yan</name>
</author>
<author><name sortKey="Chen, Meixue" sort="Chen, Meixue" uniqKey="Chen M" first="Meixue" last="Chen">Meixue Chen</name>
</author>
<author><name sortKey="He, Hong" sort="He, Hong" uniqKey="He H" first="Hong" last="He">Hong He</name>
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<author><name sortKey="Qu, Jiuhui" sort="Qu, Jiuhui" uniqKey="Qu J" first="Jiuhui" last="Qu">Jiuhui Qu</name>
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<series><title level="j">Langmuir : the ACS journal of surfaces and colloids</title>
<idno type="ISSN">0743-7463</idno>
<imprint><date when="2007" type="published">2007</date>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adsorption (MeSH)</term>
<term>Aluminum Oxide (pharmacology)</term>
<term>Anti-Bacterial Agents (pharmacology)</term>
<term>Catalase (pharmacology)</term>
<term>Escherichia coli (drug effects)</term>
<term>Escherichia coli (metabolism)</term>
<term>Escherichia coli (ultrastructure)</term>
<term>Formaldehyde (MeSH)</term>
<term>Free Radical Scavengers (pharmacology)</term>
<term>Microscopy, Electron, Scanning (MeSH)</term>
<term>Reactive Oxygen Species (metabolism)</term>
<term>Silver (pharmacology)</term>
<term>Superoxide Dismutase (pharmacology)</term>
<term>Surface Properties (MeSH)</term>
<term>Ultraviolet Rays (MeSH)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Reactive Oxygen Species</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="pharmacology" xml:lang="en"><term>Aluminum Oxide</term>
<term>Anti-Bacterial Agents</term>
<term>Catalase</term>
<term>Free Radical Scavengers</term>
<term>Silver</term>
<term>Superoxide Dismutase</term>
</keywords>
<keywords scheme="MESH" qualifier="drug effects" xml:lang="en"><term>Escherichia coli</term>
</keywords>
<keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Escherichia coli</term>
</keywords>
<keywords scheme="MESH" qualifier="ultrastructure" xml:lang="en"><term>Escherichia coli</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Adsorption</term>
<term>Formaldehyde</term>
<term>Microscopy, Electron, Scanning</term>
<term>Surface Properties</term>
<term>Ultraviolet Rays</term>
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<front><div type="abstract" xml:lang="en">The bactericidal process of Ag/Al2O3 to Escherichia coli has been investigated to clarify the bactericidal mechanism. In SEM images, the configuration of E. coli cells contacting with the catalyst surface was quite different from that contacting with AgNO3 solution, which indicated that the Ag+ eluted from the catalyst did not play an important role in the bactericidal process. The bactericidal experiments strongly confirmed the contribution of multiform reactive oxygen species (ROS) (super oxide dismutase (SOD) and catalase as the scavengers for O2*- and H2O2, respectively) to bactericidal effect on the catalyst surface. Furthermore, the surface modification of Ag/Al2O3 by ultraviolet and formaldehyde influenced the bactericidal effect obviously, which not only confirmed the bactericidal mechanism of catalytic oxidation but also provided evidence for the synergistic effect between Ag and Al2O3 on the catalyst surface.</div>
</front>
</TEI>
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<DateCompleted><Year>2007</Year>
<Month>12</Month>
<Day>20</Day>
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<DateRevised><Year>2013</Year>
<Month>11</Month>
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<Issue>22</Issue>
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<Title>Langmuir : the ACS journal of surfaces and colloids</Title>
<ISOAbbreviation>Langmuir</ISOAbbreviation>
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<ArticleTitle>Bactericidal mechanism of Ag/Al2O3 against Escherichia coli.</ArticleTitle>
<Pagination><MedlinePgn>11197-9</MedlinePgn>
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<Abstract><AbstractText>The bactericidal process of Ag/Al2O3 to Escherichia coli has been investigated to clarify the bactericidal mechanism. In SEM images, the configuration of E. coli cells contacting with the catalyst surface was quite different from that contacting with AgNO3 solution, which indicated that the Ag+ eluted from the catalyst did not play an important role in the bactericidal process. The bactericidal experiments strongly confirmed the contribution of multiform reactive oxygen species (ROS) (super oxide dismutase (SOD) and catalase as the scavengers for O2*- and H2O2, respectively) to bactericidal effect on the catalyst surface. Furthermore, the surface modification of Ag/Al2O3 by ultraviolet and formaldehyde influenced the bactericidal effect obviously, which not only confirmed the bactericidal mechanism of catalytic oxidation but also provided evidence for the synergistic effect between Ag and Al2O3 on the catalyst surface.</AbstractText>
</Abstract>
<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Chang</LastName>
<ForeName>Qingyun</ForeName>
<Initials>Q</Initials>
<AffiliationInfo><Affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</Affiliation>
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<Author ValidYN="Y"><LastName>Chen</LastName>
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<Author ValidYN="Y"><LastName>He</LastName>
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<Author ValidYN="Y"><LastName>Qu</LastName>
<ForeName>Jiuhui</ForeName>
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<Language>eng</Language>
<PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType>
<PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType>
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<ArticleDate DateType="Electronic"><Year>2007</Year>
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<MedlineJournalInfo><Country>United States</Country>
<MedlineTA>Langmuir</MedlineTA>
<NlmUniqueID>9882736</NlmUniqueID>
<ISSNLinking>0743-7463</ISSNLinking>
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<ChemicalList><Chemical><RegistryNumber>0</RegistryNumber>
<NameOfSubstance UI="D000900">Anti-Bacterial Agents</NameOfSubstance>
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<MeshHeading><DescriptorName UI="D002374" MajorTopicYN="N">Catalase</DescriptorName>
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</MeshHeading>
<MeshHeading><DescriptorName UI="D017382" MajorTopicYN="N">Reactive Oxygen Species</DescriptorName>
<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
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<MeshHeading><DescriptorName UI="D012834" MajorTopicYN="N">Silver</DescriptorName>
<QualifierName UI="Q000494" MajorTopicYN="Y">pharmacology</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D013482" MajorTopicYN="N">Superoxide Dismutase</DescriptorName>
<QualifierName UI="Q000494" MajorTopicYN="N">pharmacology</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D013499" MajorTopicYN="N">Surface Properties</DescriptorName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D014466" MajorTopicYN="N">Ultraviolet Rays</DescriptorName>
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Bactericidal mechanism of Ag/Al2O3 against Escherichia coli.

Bactericidal mechanism of Ag/Al2O3 against Escherichia coli.

Source :

English descriptors

Abstract

Links to Exploration step

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Pour manipuler ce document sous Unix (Dilib)

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Pour générer des pages wiki