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dc.contributor.authorChilton, C. H.
dc.contributor.authorFreeman, J.
dc.contributor.authorBaines, Simon D.
dc.contributor.authorCrowther, G. S.
dc.contributor.authorNicholson, S.
dc.contributor.authorWilcox, M. H.
dc.date.accessioned2013-10-22T10:00:51Z
dc.date.available2013-10-22T10:00:51Z
dc.date.issued2013
dc.identifier.citationChilton , C H , Freeman , J , Baines , S D , Crowther , G S , Nicholson , S & Wilcox , M H 2013 , ' Evaluation of the effect of oritavancin on Clostridium difficile spore germination, outgrowth and recovery ' , Journal of Antimicrobial Chemotherapy , vol. 68 , no. 9 , pp. 2078-82 . https://doi.org/10.1093/jac/dkt160
dc.identifier.issn1460-2091
dc.identifier.otherPURE: 2057943
dc.identifier.otherPURE UUID: 15046a2b-4726-4637-87da-664f7c35f39d
dc.identifier.otherPubMed: 23759507
dc.identifier.otherScopus: 84882685517
dc.identifier.urihttp://hdl.handle.net/2299/11835
dc.description.abstractOBJECTIVES: Previous work suggests oritavancin may be inhibitory to Clostridium difficile spores. We have evaluated the effects of oritavancin exposure on C. difficile spore germination, outgrowth and recovery. METHODS: Germination and outgrowth of C. difficile spores exposed to different concentrations of oritavancin, vancomycin, or metronidazole (0.1-10 mg/L) were monitored at 0, 2, 4, 6, 24 and 48 h using phase-contrast microscopy. Recovery of antimicrobial-exposed spores was determined by viable counting on Brazier's modified CCEYL agar. Persistence of oritavancin activity on spores after washing was determined by measuring activity against a Staphylococcus aureus lawn. RESULTS: Oritavancin, vancomycin and metronidazole exposure did not prevent germination of phase-bright spores to phase-dark spores, but did inhibit further outgrowth into vegetative cells. The inhibitory effect of oritavancin persisted after washing, whereas the inhibitory effects of vancomycin and metronidazole did not. Oritavancin exposure affected spore recovery; fewer spores were recovered after washing following oritavancin exposure than vancomycin exposure. The extent of this effect was dependent on PCR ribotype, with recovery of ribotype 078 spores completely prevented, but recovery of ribotype 001 spores only slightly affected. Spores exposed to oritavancin, but not vancomycin, retained antimicrobial activity after washing, indicating adherence of oritavancin, but not vancomycin, to the spore surface CONCLUSIONS: Oritavancin may adhere to spores, potentially causing early inhibition of germinated cells, preventing subsequent vegetative outgrowth and spore recovery. This may prevent some recurrences of symptomatic C. difficile infection that are due to germination of residual spores following antibiotic therapy.en
dc.language.isoeng
dc.relation.ispartofJournal of Antimicrobial Chemotherapy
dc.titleEvaluation of the effect of oritavancin on Clostridium difficile spore germination, outgrowth and recoveryen
dc.contributor.institutionHealth & Human Sciences Research Institute
dc.contributor.institutionSchool of Life and Medical Sciences
dc.contributor.institutionDepartment of Human and Environmental Sciences
dc.contributor.institutionAgriculture, Veterinary and Food Sciences
dc.contributor.institutionGeography, Environment and Agriculture
dc.contributor.institutionMicrobiology and Biotechnology
dc.contributor.institutionDepartment of Biological and Environmental Sciences
dc.contributor.institutionBiosciences Research Group
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Life and Medical Sciences
dcterms.dateAccepted2013
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1093/jac/dkt160
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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