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Modulation of multidrug-resistant clone success in Escherichia coli populations: a longitudinal, multi-country, genomic and antibiotic usage cohort study.
Pöntinen AK, Gladstone RA, Pesonen H, Pesonen M, Cléon F, Parcell BJ, Kallonen T, Simonsen GS, Croucher NJ, McNally A, Parkhill J, Johnsen PJ, Samuelsen Ø, Corander J. Pöntinen AK, et al. Among authors: johnsen pj. Lancet Microbe. 2024 Feb;5(2):e142-e150. doi: 10.1016/S2666-5247(23)00292-6. Epub 2024 Jan 11. Lancet Microbe. 2024. PMID: 38219757 Free article.
Bacterial natural transformation by highly fragmented and damaged DNA.
Overballe-Petersen S, Harms K, Orlando LA, Mayar JV, Rasmussen S, Dahl TW, Rosing MT, Poole AM, Sicheritz-Ponten T, Brunak S, Inselmann S, de Vries J, Wackernagel W, Pybus OG, Nielsen R, Johnsen PJ, Nielsen KM, Willerslev E. Overballe-Petersen S, et al. Among authors: johnsen pj. Proc Natl Acad Sci U S A. 2013 Dec 3;110(49):19860-5. doi: 10.1073/pnas.1315278110. Epub 2013 Nov 18. Proc Natl Acad Sci U S A. 2013. PMID: 24248361 Free PMC article.
Persistence of animal and human glycopeptide-resistant enterococci on two Norwegian poultry farms formerly exposed to avoparcin is associated with a widespread plasmid-mediated vanA element within a polyclonal enterococcus faecium population.
Johnsen PJ, Østerhus JI, Sletvold H, Sørum M, Kruse H, Nielsen K, Simonsen GS, Sundsfjord A. Johnsen PJ, et al. Appl Environ Microbiol. 2005 Jan;71(1):159-68. doi: 10.1128/AEM.71.1.159-168.2005. Appl Environ Microbiol. 2005. PMID: 15640183 Free PMC article.
PCR-based plasmid typing in Enterococcus faecium strains reveals widely distributed pRE25-, pRUM-, pIP501- and pHTbeta-related replicons associated with glycopeptide resistance and stabilizing toxin-antitoxin systems.
Rosvoll TC, Pedersen T, Sletvold H, Johnsen PJ, Sollid JE, Simonsen GS, Jensen LB, Nielsen KM, Sundsfjord A. Rosvoll TC, et al. Among authors: johnsen pj. FEMS Immunol Med Microbiol. 2010 Mar;58(2):254-68. doi: 10.1111/j.1574-695X.2009.00633.x. Epub 2009 Nov 17. FEMS Immunol Med Microbiol. 2010. PMID: 20015231 Free article.
57 results