Morphology-dependent bactericidal activities of Ag/CeO2 catalysts against Escherichia coli.
Identifieur interne : 000858 ( Main/Corpus ); précédent : 000857; suivant : 000859Morphology-dependent bactericidal activities of Ag/CeO2 catalysts against Escherichia coli.
Auteurs : Lian Wang ; Hong He ; Yunbo Yu ; Li Sun ; Sijin Liu ; Changbin Zhang ; Lian HeSource :
- Journal of inorganic biochemistry [ 1873-3344 ] ; 2014.
English descriptors
- KwdEn :
- Anti-Bacterial Agents (chemistry), Anti-Bacterial Agents (pharmacology), Catalysis (MeSH), Cell Membrane (drug effects), Cell Membrane (ultrastructure), Cell Wall (drug effects), Cell Wall (ultrastructure), Cerium (chemistry), Cerium (pharmacology), Escherichia coli (cytology), Escherichia coli (drug effects), Escherichia coli (metabolism), Microbial Sensitivity Tests (MeSH), Microbial Viability (MeSH), Nanoparticles (chemistry), Oxides (chemistry), Oxides (pharmacology), Particle Size (MeSH), Reactive Oxygen Species (metabolism), Silver Compounds (chemistry), Silver Compounds (pharmacology).
- MESH :
- chemical , chemistry : Anti-Bacterial Agents, Cerium, Oxides, Silver Compounds.
- chemical , metabolism : Reactive Oxygen Species.
- chemical , pharmacology : Anti-Bacterial Agents, Cerium, Oxides, Silver Compounds.
- chemistry : Nanoparticles.
- cytology : Escherichia coli.
- drug effects : Cell Membrane, Cell Wall, Escherichia coli.
- metabolism : Escherichia coli.
- ultrastructure : Cell Membrane, Cell Wall.
- Catalysis, Microbial Sensitivity Tests, Microbial Viability, Particle Size.
Abstract
Silver-loaded CeO2 nanomaterials (Ag/CeO2) including Ag/CeO2 nanorods, nanocubes, nanoparticles were prepared with hydrothermal and impregnation methods. Catalytic inactivation of Escherichia coli with Ag/CeO2 catalysts through the formation of reactive oxygen species (ROS) was investigated. For comparison purposes, the bactericidal activities of CeO2 nanorods, nanocubes and nanoparticles were also studied. There was a 3-4 log order improvement in the inactivation of E. coli with Ag/CeO2 catalysts compared with CeO2 catalysts. Temperature-programmed reduction of H2 showed that Ag/CeO2 catalysts had higher catalytic oxidation ability than CeO2 catalysts, which was the reason for that Ag/CeO2 catalysts exhibited stronger bactericidal activities than CeO2 catalysts. Further, the bactericidal activities of CeO2 and Ag/CeO2 depend on their shapes. Results of 5,5-dimethyl-1-pyrroline-N-oxide spin-trapping measurements by electron spin resonance and addition of catalase as a scavenger indicated the formation of OH, O2(-), and H2O2, which caused the obvious bactericidal activity of catalysts. The stronger chemical bond between Ag and CeO2 nanorods led to lower Ag(+) elution concentrations. The toxicity of Ag(+) eluted from the catalysts did not play an important role during the bactericidal process. Experimental results also indicated that Ag/CeO2 induced the production of intracellular ROS and disruption of the cell wall and cell membrane. A possible production mechanism of ROS and bactericidal mechanism of catalytic oxidation were proposed.
DOI: 10.1016/j.jinorgbio.2014.02.016
PubMed: 24662462
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pubmed:24662462Le document en format XML
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Electronic address: honghe@rcees.ac.cn.</nlm:affiliation></affiliation></author><author><name sortKey="Yu, Yunbo" sort="Yu, Yunbo" uniqKey="Yu Y" first="Yunbo" last="Yu">Yunbo Yu</name><affiliation><nlm:affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</nlm:affiliation></affiliation></author><author><name sortKey="Sun, Li" sort="Sun, Li" uniqKey="Sun L" first="Li" last="Sun">Li Sun</name><affiliation><nlm:affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</nlm:affiliation></affiliation></author><author><name sortKey="Liu, Sijin" sort="Liu, Sijin" uniqKey="Liu S" first="Sijin" last="Liu">Sijin Liu</name><affiliation><nlm:affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</nlm:affiliation></affiliation></author><author><name sortKey="Zhang, Changbin" sort="Zhang, Changbin" uniqKey="Zhang C" first="Changbin" last="Zhang">Changbin Zhang</name><affiliation><nlm:affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</nlm:affiliation></affiliation></author><author><name sortKey="He, Lian" sort="He, Lian" uniqKey="He L" first="Lian" last="He">Lian He</name><affiliation><nlm:affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</nlm:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2014">2014</date><idno type="RBID">pubmed:24662462</idno><idno type="pmid">24662462</idno><idno type="doi">10.1016/j.jinorgbio.2014.02.016</idno><idno type="wicri:Area/Main/Corpus">000858</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">000858</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Morphology-dependent bactericidal activities of Ag/CeO2 catalysts against Escherichia coli.</title><author><name sortKey="Wang, Lian" sort="Wang, Lian" uniqKey="Wang L" first="Lian" last="Wang">Lian Wang</name><affiliation><nlm:affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</nlm:affiliation></affiliation></author><author><name sortKey="He, Hong" sort="He, Hong" uniqKey="He H" first="Hong" last="He">Hong He</name><affiliation><nlm:affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. Electronic address: honghe@rcees.ac.cn.</nlm:affiliation></affiliation></author><author><name sortKey="Yu, Yunbo" sort="Yu, Yunbo" uniqKey="Yu Y" first="Yunbo" last="Yu">Yunbo Yu</name><affiliation><nlm:affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</nlm:affiliation></affiliation></author><author><name sortKey="Sun, Li" sort="Sun, Li" uniqKey="Sun L" first="Li" last="Sun">Li Sun</name><affiliation><nlm:affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</nlm:affiliation></affiliation></author><author><name sortKey="Liu, Sijin" sort="Liu, Sijin" uniqKey="Liu S" first="Sijin" last="Liu">Sijin Liu</name><affiliation><nlm:affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</nlm:affiliation></affiliation></author><author><name sortKey="Zhang, Changbin" sort="Zhang, Changbin" uniqKey="Zhang C" first="Changbin" last="Zhang">Changbin Zhang</name><affiliation><nlm:affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</nlm:affiliation></affiliation></author><author><name sortKey="He, Lian" sort="He, Lian" uniqKey="He L" first="Lian" last="He">Lian He</name><affiliation><nlm:affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</nlm:affiliation></affiliation></author></analytic><series><title level="j">Journal of inorganic biochemistry</title><idno type="eISSN">1873-3344</idno><imprint><date when="2014" type="published">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Anti-Bacterial Agents (chemistry)</term><term>Anti-Bacterial Agents (pharmacology)</term><term>Catalysis (MeSH)</term><term>Cell Membrane (drug effects)</term><term>Cell Membrane (ultrastructure)</term><term>Cell Wall (drug effects)</term><term>Cell Wall (ultrastructure)</term><term>Cerium (chemistry)</term><term>Cerium (pharmacology)</term><term>Escherichia coli (cytology)</term><term>Escherichia coli (drug effects)</term><term>Escherichia coli (metabolism)</term><term>Microbial Sensitivity Tests (MeSH)</term><term>Microbial Viability (MeSH)</term><term>Nanoparticles (chemistry)</term><term>Oxides (chemistry)</term><term>Oxides (pharmacology)</term><term>Particle Size (MeSH)</term><term>Reactive Oxygen Species (metabolism)</term><term>Silver Compounds (chemistry)</term><term>Silver Compounds (pharmacology)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Anti-Bacterial Agents</term><term>Cerium</term><term>Oxides</term><term>Silver Compounds</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>Anti-Bacterial Agents</term><term>Cerium</term><term>Oxides</term><term>Silver Compounds</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Nanoparticles</term></keywords><keywords scheme="MESH" qualifier="cytology" xml:lang="en"><term>Escherichia coli</term></keywords><keywords scheme="MESH" qualifier="drug effects" xml:lang="en"><term>Cell Membrane</term><term>Cell Wall</term><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>Cell Membrane</term><term>Cell Wall</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Catalysis</term><term>Microbial Sensitivity Tests</term><term>Microbial Viability</term><term>Particle Size</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Silver-loaded CeO2 nanomaterials (Ag/CeO2) including Ag/CeO2 nanorods, nanocubes, nanoparticles were prepared with hydrothermal and impregnation methods. Catalytic inactivation of Escherichia coli with Ag/CeO2 catalysts through the formation of reactive oxygen species (ROS) was investigated. For comparison purposes, the bactericidal activities of CeO2 nanorods, nanocubes and nanoparticles were also studied. There was a 3-4 log order improvement in the inactivation of E. coli with Ag/CeO2 catalysts compared with CeO2 catalysts. Temperature-programmed reduction of H2 showed that Ag/CeO2 catalysts had higher catalytic oxidation ability than CeO2 catalysts, which was the reason for that Ag/CeO2 catalysts exhibited stronger bactericidal activities than CeO2 catalysts. Further, the bactericidal activities of CeO2 and Ag/CeO2 depend on their shapes. Results of 5,5-dimethyl-1-pyrroline-N-oxide spin-trapping measurements by electron spin resonance and addition of catalase as a scavenger indicated the formation of OH, O2(-), and H2O2, which caused the obvious bactericidal activity of catalysts. The stronger chemical bond between Ag and CeO2 nanorods led to lower Ag(+) elution concentrations. The toxicity of Ag(+) eluted from the catalysts did not play an important role during the bactericidal process. Experimental results also indicated that Ag/CeO2 induced the production of intracellular ROS and disruption of the cell wall and cell membrane. A possible production mechanism of ROS and bactericidal mechanism of catalytic oxidation were proposed. </div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">24662462</PMID><DateCompleted><Year>2014</Year><Month>12</Month><Day>15</Day></DateCompleted><DateRevised><Year>2014</Year><Month>04</Month><Day>16</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1873-3344</ISSN><JournalIssue CitedMedium="Internet"><Volume>135</Volume><PubDate><Year>2014</Year><Month>Jun</Month></PubDate></JournalIssue><Title>Journal of inorganic biochemistry</Title><ISOAbbreviation>J Inorg Biochem</ISOAbbreviation></Journal><ArticleTitle>Morphology-dependent bactericidal activities of Ag/CeO2 catalysts against Escherichia coli.</ArticleTitle><Pagination><MedlinePgn>45-53</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.jinorgbio.2014.02.016</ELocationID><ELocationID EIdType="pii" ValidYN="Y">S0162-0134(14)00067-1</ELocationID><Abstract><AbstractText>Silver-loaded CeO2 nanomaterials (Ag/CeO2) including Ag/CeO2 nanorods, nanocubes, nanoparticles were prepared with hydrothermal and impregnation methods. Catalytic inactivation of Escherichia coli with Ag/CeO2 catalysts through the formation of reactive oxygen species (ROS) was investigated. For comparison purposes, the bactericidal activities of CeO2 nanorods, nanocubes and nanoparticles were also studied. There was a 3-4 log order improvement in the inactivation of E. coli with Ag/CeO2 catalysts compared with CeO2 catalysts. Temperature-programmed reduction of H2 showed that Ag/CeO2 catalysts had higher catalytic oxidation ability than CeO2 catalysts, which was the reason for that Ag/CeO2 catalysts exhibited stronger bactericidal activities than CeO2 catalysts. Further, the bactericidal activities of CeO2 and Ag/CeO2 depend on their shapes. Results of 5,5-dimethyl-1-pyrroline-N-oxide spin-trapping measurements by electron spin resonance and addition of catalase as a scavenger indicated the formation of OH, O2(-), and H2O2, which caused the obvious bactericidal activity of catalysts. The stronger chemical bond between Ag and CeO2 nanorods led to lower Ag(+) elution concentrations. The toxicity of Ag(+) eluted from the catalysts did not play an important role during the bactericidal process. Experimental results also indicated that Ag/CeO2 induced the production of intracellular ROS and disruption of the cell wall and cell membrane. A possible production mechanism of ROS and bactericidal mechanism of catalytic oxidation were proposed. </AbstractText><CopyrightInformation>Copyright © 2014 Elsevier Inc. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Wang</LastName><ForeName>Lian</ForeName><Initials>L</Initials><AffiliationInfo><Affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>He</LastName><ForeName>Hong</ForeName><Initials>H</Initials><AffiliationInfo><Affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. Electronic address: honghe@rcees.ac.cn.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Yu</LastName><ForeName>Yunbo</ForeName><Initials>Y</Initials><AffiliationInfo><Affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Sun</LastName><ForeName>Li</ForeName><Initials>L</Initials><AffiliationInfo><Affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Liu</LastName><ForeName>Sijin</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Zhang</LastName><ForeName>Changbin</ForeName><Initials>C</Initials><AffiliationInfo><Affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>He</LastName><ForeName>Lian</ForeName><Initials>L</Initials><AffiliationInfo><Affiliation>Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2014</Year><Month>03</Month><Day>11</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>J Inorg Biochem</MedlineTA><NlmUniqueID>7905788</NlmUniqueID><ISSNLinking>0162-0134</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D000900">Anti-Bacterial Agents</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D010087">Oxides</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D017382">Reactive Oxygen Species</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D018030">Silver Compounds</NameOfSubstance></Chemical><Chemical><RegistryNumber>30K4522N6T</RegistryNumber><NameOfSubstance UI="D002563">Cerium</NameOfSubstance></Chemical><Chemical><RegistryNumber>619G5K328Y</RegistryNumber><NameOfSubstance UI="C030583">ceric oxide</NameOfSubstance></Chemical><Chemical><RegistryNumber>897WUN6G6T</RegistryNumber><NameOfSubstance UI="C040225">disilver oxide</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000900" MajorTopicYN="N">Anti-Bacterial Agents</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName><QualifierName UI="Q000494" MajorTopicYN="N">pharmacology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D002384" MajorTopicYN="N">Catalysis</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D002462" MajorTopicYN="N">Cell Membrane</DescriptorName><QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName><QualifierName UI="Q000648" MajorTopicYN="N">ultrastructure</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D002473" MajorTopicYN="N">Cell Wall</DescriptorName><QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName><QualifierName UI="Q000648" MajorTopicYN="N">ultrastructure</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D002563" MajorTopicYN="N">Cerium</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName><QualifierName UI="Q000494" MajorTopicYN="N">pharmacology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D004926" MajorTopicYN="N">Escherichia coli</DescriptorName><QualifierName UI="Q000166" MajorTopicYN="N">cytology</QualifierName><QualifierName UI="Q000187" MajorTopicYN="Y">drug effects</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008826" MajorTopicYN="N">Microbial Sensitivity Tests</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D050296" MajorTopicYN="N">Microbial Viability</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D053758" MajorTopicYN="N">Nanoparticles</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="N">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010087" MajorTopicYN="N">Oxides</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName><QualifierName UI="Q000494" MajorTopicYN="N">pharmacology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010316" MajorTopicYN="N">Particle Size</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D017382" MajorTopicYN="N">Reactive Oxygen Species</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018030" MajorTopicYN="N">Silver Compounds</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName><QualifierName UI="Q000494" MajorTopicYN="N">pharmacology</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Bactericidal activity</Keyword><Keyword MajorTopicYN="N">CeO(2)</Keyword><Keyword MajorTopicYN="N">E. coli</Keyword><Keyword MajorTopicYN="N">ROS</Keyword><Keyword MajorTopicYN="N">Silver</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2013</Year><Month>09</Month><Day>26</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2014</Year><Month>02</Month><Day>26</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2014</Year><Month>02</Month><Day>27</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2014</Year><Month>3</Month><Day>26</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2014</Year><Month>3</Month><Day>26</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2014</Year><Month>12</Month><Day>17</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">24662462</ArticleId><ArticleId IdType="pii">S0162-0134(14)00067-1</ArticleId><ArticleId IdType="doi">10.1016/j.jinorgbio.2014.02.016</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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