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Items: 37


Using Genomics to Track Global Antimicrobial Resistance.

Hendriksen RS, Bortolaia V, Tate H, Tyson GH, Aarestrup FM, McDermott PF.

Front Public Health. 2019 Sep 4;7:242. doi: 10.3389/fpubh.2019.00242. eCollection 2019. Review.


Antibiotic-Induced, Increased Conjugative Transfer Is Common to Diverse Naturally Occurring ESBL Plasmids in Escherichia coli.

Liu G, Bogaj K, Bortolaia V, Olsen JE, Thomsen LE.

Front Microbiol. 2019 Sep 10;10:2119. doi: 10.3389/fmicb.2019.02119. eCollection 2019.


Occurrence and Characterization of mcr-1-Positive Escherichia coli Isolated From Food-Producing Animals in Poland, 2011-2016.

Zając M, Sztromwasser P, Bortolaia V, Leekitcharoenphon P, Cavaco LM, Ziȩtek-Barszcz A, Hendriksen RS, Wasyl D.

Front Microbiol. 2019 Aug 8;10:1753. doi: 10.3389/fmicb.2019.01753. eCollection 2019.


IncI1 ST3 and IncI1 ST7 plasmids from CTX-M-1-producing Escherichia coli obtained from patients with bloodstream infections are closely related to plasmids from E. coli of animal origin.

Valcek A, Roer L, Overballe-Petersen S, Hansen F, Bortolaia V, Leekitcharoenphon P, Korsgaard HB, Seyfarth AM, Hendriksen RS, Hasman H, Hammerum AM.

J Antimicrob Chemother. 2019 Aug 1;74(8):2171-2175. doi: 10.1093/jac/dkz199.


Fate of CMY-2-Encoding Plasmids Introduced into the Human Fecal Microbiota by Exogenous Escherichia coli.

Anjum M, Madsen JS, Nesme J, Jana B, Wiese M, Jasinskytė D, Nielsen DS, Sørensen SJ, Dalsgaard A, Moodley A, Bortolaia V, Guardabassi L.

Antimicrob Agents Chemother. 2019 Apr 25;63(5). pii: e02528-18. doi: 10.1128/AAC.02528-18. Print 2019 May.


ST131 fimH22 Escherichia coli isolate with a blaCMY-2/IncI1/ST12 plasmid obtained from a patient with bloodstream infection: highly similar to E. coli isolates of broiler origin.

Roer L, Overballe-Petersen S, Hansen F, Johannesen TB, Stegger M, Bortolaia V, Leekitcharoenphon P, Korsgaard HB, Seyfarth AM, Mossong J, Wattiau P, Boland C, Hansen DS, Hasman H, Hammerum AM, Hendriksen RS.

J Antimicrob Chemother. 2019 Mar 1;74(3):557-560. doi: 10.1093/jac/dky484.


Plasmid ATLAS: plasmid visual analytics and identification in high-throughput sequencing data.

Jesus TF, Ribeiro-Gonçalves B, Silva DN, Bortolaia V, Ramirez M, Carriço JA.

Nucleic Acids Res. 2019 Jan 8;47(D1):D188-D194. doi: 10.1093/nar/gky1073.


A culture-independent method for studying transfer of IncI1 plasmids from wild-type Escherichia coli in complex microbial communities.

Anjum M, Madsen JS, Espinosa-Gongora C, Jana B, Wiese M, Nielsen DS, Sørensen SJ, Moodley A, Bortolaia V, Guardabassi L.

J Microbiol Methods. 2018 Sep;152:18-26. doi: 10.1016/j.mimet.2018.07.009. Epub 2018 Jul 18.


Molecular Epidemiology of mcr-Encoded Colistin Resistance in Enterobacteriaceae From Food-Producing Animals in Italy Revealed Through the EU Harmonized Antimicrobial Resistance Monitoring.

Alba P, Leekitcharoenphon P, Franco A, Feltrin F, Ianzano A, Caprioli A, Stravino F, Hendriksen RS, Bortolaia V, Battisti A.

Front Microbiol. 2018 Jun 12;9:1217. doi: 10.3389/fmicb.2018.01217. eCollection 2018.


Vancomycin resistance in Enterococcus faecium isolated from Danish chicken meat is located on a pVEF4-like plasmid persisting in poultry for 18 years.

Leinweber H, Alotaibi SMI, Overballe-Petersen S, Hansen F, Hasman H, Bortolaia V, Hammerum AM, Ingmer H.

Int J Antimicrob Agents. 2018 Aug;52(2):283-286. doi: 10.1016/j.ijantimicag.2018.03.019. Epub 2018 Apr 3.


Cephalosporin-resistant Escherichia coli isolated from farm workers and pigs in northern Vietnam.

Dang STT, Bortolaia V, Tran NT, Le HQ, Dalsgaard A.

Trop Med Int Health. 2018 Apr;23(4):415-424. doi: 10.1111/tmi.13054.


High diversity of genes and plasmids encoding resistance to third-generation cephalosporins and quinolones in clinical Escherichia coli from commercial poultry flocks in Italy.

Niero G, Bortolaia V, Vanni M, Intorre L, Guardabassi L, Piccirillo A.

Vet Microbiol. 2018 Mar;216:93-98. doi: 10.1016/j.vetmic.2018.02.012. Epub 2018 Feb 9.


Multiplex PCR for detection of plasmid-mediated colistin resistance determinants, mcr-1, mcr-2, mcr-3, mcr-4 and mcr-5 for surveillance purposes.

Rebelo AR, Bortolaia V, Kjeldgaard JS, Pedersen SK, Leekitcharoenphon P, Hansen IM, Guerra B, Malorny B, Borowiak M, Hammerl JA, Battisti A, Franco A, Alba P, Perrin-Guyomard A, Granier SA, De Frutos Escobar C, Malhotra-Kumar S, Villa L, Carattoli A, Hendriksen RS.

Euro Surveill. 2018 Feb;23(6). doi: 10.2807/1560-7917.ES.2018.23.6.17-00672. Erratum in: Euro Surveill. 2018 Feb;23(7):.


Carbapenemase VCC-1-Producing Vibrio cholerae in Coastal Waters of Germany.

Hammerl JA, Jäckel C, Bortolaia V, Schwartz K, Bier N, Hendriksen RS, Guerra B, Strauch E.

Emerg Infect Dis. 2017 Oct;23(10):1735-1737. doi: 10.3201/eid2310.161625.


Expanding the Repertoire of Carbapenem-Hydrolyzing Metallo-ß-Lactamases by Functional Metagenomic Analysis of Soil Microbiota.

Gudeta DD, Bortolaia V, Pollini S, Docquier JD, Rossolini GM, Amos GC, Wellington EM, Guardabassi L.

Front Microbiol. 2016 Dec 26;7:1985. doi: 10.3389/fmicb.2016.01985. eCollection 2016.


Host-Specific Patterns of Genetic Diversity among IncI1-Iγ and IncK Plasmids Encoding CMY-2 β-Lactamase in Escherichia coli Isolates from Humans, Poultry Meat, Poultry, and Dogs in Denmark.

Hansen KH, Bortolaia V, Nielsen CA, Nielsen JB, Schønning K, Agersø Y, Guardabassi L.

Appl Environ Microbiol. 2016 Jul 15;82(15):4705-14. doi: 10.1128/AEM.00495-16. Print 2016 Aug 1.


Erratum for Gudeta et al., The Soil Microbiota Harbors a Diversity of Carbapenem-Hydrolyzing β-Lactamases of Potential Clinical Relevance.

Gudeta DD, Bortolaia V, Amos G, Wellington EM, Brandt KK, Poirel L, Nielsen JB, Westh H, Guardabassi L.

Antimicrob Agents Chemother. 2016 Mar 25;60(4):2599. doi: 10.1128/AAC.00375-16. Print 2016 Apr. No abstract available.


Relation between tetR and tetA expression in tetracycline resistant Escherichia coli.

Møller TS, Overgaard M, Nielsen SS, Bortolaia V, Sommer MO, Guardabassi L, Olsen JE.

BMC Microbiol. 2016 Mar 12;16:39. doi: 10.1186/s12866-016-0649-z.


Chromobacterium spp. harbour Ambler class A β-lactamases showing high identity with KPC.

Gudeta DD, Bortolaia V, Jayol A, Poirel L, Nordmann P, Guardabassi L.

J Antimicrob Chemother. 2016 Jun;71(6):1493-6. doi: 10.1093/jac/dkw020. Epub 2016 Feb 17.


Human health risks associated with antimicrobial-resistant enterococci and Staphylococcus aureus on poultry meat.

Bortolaia V, Espinosa-Gongora C, Guardabassi L.

Clin Microbiol Infect. 2016 Feb;22(2):130-140. doi: 10.1016/j.cmi.2015.12.003. Epub 2015 Dec 17. Review.


Biochemical Characterization of CPS-1, a Subclass B3 Metallo-β-Lactamase from a Chryseobacterium piscium Soil Isolate.

Gudeta DD, Pollini S, Docquier JD, Bortolaia V, Rossolini GM, Guardabassi L.

Antimicrob Agents Chemother. 2015 Dec 14;60(3):1869-73. doi: 10.1128/AAC.01924-15.


CTX-M-1 and CTX-M-15-producing Escherichia coli in dog faeces from public gardens.

Damborg P, Morsing MK, Petersen T, Bortolaia V, Guardabassi L.

Acta Vet Scand. 2015 Nov 25;57:83. doi: 10.1186/s13028-015-0174-3.


Quantitative assessment of faecal shedding of β-lactam-resistant Escherichia coli and enterococci in dogs.

Espinosa-Gongora C, Shah SQ, Jessen LR, Bortolaia V, Langebæk R, Bjørnvad CR, Guardabassi L.

Vet Microbiol. 2015 Dec 31;181(3-4):298-302. doi: 10.1016/j.vetmic.2015.10.004. Epub 2015 Oct 20.


The Soil Microbiota Harbors a Diversity of Carbapenem-Hydrolyzing β-Lactamases of Potential Clinical Relevance.

Gudeta DD, Bortolaia V, Amos G, Wellington EM, Brandt KK, Poirel L, Nielsen JB, Westh H, Guardabassi L.

Antimicrob Agents Chemother. 2015 Oct 19;60(1):151-60. doi: 10.1128/AAC.01424-15. Print 2016 Jan. Erratum in: Antimicrob Agents Chemother. 2016 Apr;60(4):2599.


Limited similarity between plasmids encoding CTX-M-1 β-lactamase in Escherichia coli from humans, pigs, cattle, organic poultry layers and horses in Denmark.

Jakobsen L, Bortolaia V, Bielak E, Moodley A, Olsen SS, Hansen DS, Frimodt-Møller N, Guardabassi L, Hasman H.

J Glob Antimicrob Resist. 2015 Jun;3(2):132-136. doi: 10.1016/j.jgar.2015.03.009. Epub 2015 May 7.


Persistence of vancomycin resistance in multiple clones of Enterococcus faecium isolated from Danish broilers 15 years after the ban of avoparcin.

Bortolaia V, Mander M, Jensen LB, Olsen JE, Guardabassi L.

Antimicrob Agents Chemother. 2015 May;59(5):2926-9. doi: 10.1128/AAC.05072-14. Epub 2015 Feb 23.


CTX-M-1 β-lactamase expression in Escherichia coli is dependent on cefotaxime concentration, growth phase and gene location.

Kjeldsen TS, Overgaard M, Nielsen SS, Bortolaia V, Jelsbak L, Sommer M, Guardabassi L, Olsen JE.

J Antimicrob Chemother. 2015 Jan;70(1):62-70. doi: 10.1093/jac/dku332. Epub 2014 Sep 1.


Strain diversity of CTX-M-producing Enterobacteriaceae in individual pigs: insights into the dynamics of shedding during the production cycle.

Hansen KH, Bortolaia V, Damborg P, Guardabassi L.

Appl Environ Microbiol. 2014 Nov;80(21):6620-6. doi: 10.1128/AEM.01730-14. Epub 2014 Aug 15.


High diversity of plasmids harbouring blaCMY-2 among clinical Escherichia coli isolates from humans and companion animals in the upper Midwestern USA.

Bortolaia V, Hansen KH, Nielsen CA, Fritsche TR, Guardabassi L.

J Antimicrob Chemother. 2014 Jun;69(6):1492-6. doi: 10.1093/jac/dku011. Epub 2014 Feb 4.


vanO, a new glycopeptide resistance operon in environmental Rhodococcus equi isolates.

Gudeta DD, Moodley A, Bortolaia V, Guardabassi L.

Antimicrob Agents Chemother. 2014;58(3):1768-70. doi: 10.1128/AAC.01880-13. Epub 2013 Dec 16.


The first attempt of an active integrated laboratory-based Salmonella surveillance programme in the north-eastern region of Nigeria.

Raufu I, Bortolaia V, Svendsen CA, Ameh JA, Ambali AG, Aarestrup FM, Hendriksen RS.

J Appl Microbiol. 2013 Oct;115(4):1059-67. doi: 10.1111/jam.12304. Epub 2013 Aug 13.


Characterization of isolates of Salmonella enterica serovar Stanley, a serovar endemic to Asia and associated with travel.

Hendriksen RS, Le Hello S, Bortolaia V, Pulsrikarn C, Nielsen EM, Pornruangmong S, Chaichana P, Svendsen CA, Weill FX, Aarestrup FM.

J Clin Microbiol. 2012 Mar;50(3):709-20. doi: 10.1128/JCM.05943-11. Epub 2012 Jan 11.


Population genetics of Vibrio cholerae from Nepal in 2010: evidence on the origin of the Haitian outbreak.

Hendriksen RS, Price LB, Schupp JM, Gillece JD, Kaas RS, Engelthaler DM, Bortolaia V, Pearson T, Waters AE, Upadhyay BP, Shrestha SD, Adhikari S, Shakya G, Keim PS, Aarestrup FM.

MBio. 2011 Sep 1;2(4):e00157-11. doi: 10.1128/mBio.00157-11. Print 2011.


Potential pathogenicity and host range of extended-spectrum beta-lactamase-producing Escherichia coli isolates from healthy poultry.

Bortolaia V, Larsen J, Damborg P, Guardabassi L.

Appl Environ Microbiol. 2011 Aug 15;77(16):5830-3. doi: 10.1128/AEM.02890-10. Epub 2011 Jun 24.


Escherichia coli producing CTX-M-1, -2, and -9 group beta-lactamases in organic chicken egg production.

Bortolaia V, Guardabassi L, Bisgaard M, Larsen J, Bojesen AM.

Antimicrob Agents Chemother. 2010 Aug;54(8):3527-8. doi: 10.1128/AAC.00262-10. Epub 2010 Jun 7. No abstract available.


High diversity of extended-spectrum beta-lactamases in Escherichia coli isolates from Italian broiler flocks.

Bortolaia V, Guardabassi L, Trevisani M, Bisgaard M, Venturi L, Bojesen AM.

Antimicrob Agents Chemother. 2010 Apr;54(4):1623-6. doi: 10.1128/AAC.01361-09. Epub 2010 Jan 25.


Distribution and possible transmission of ampicillin- and nalidixic acid-resistant Escherichia coli within the broiler industry.

Bortolaia V, Bisgaard M, Bojesen AM.

Vet Microbiol. 2010 May 19;142(3-4):379-86. doi: 10.1016/j.vetmic.2009.10.024. Epub 2009 Nov 6.


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