Ole Andreas Løchen Økstad

Bilde av Ole Andreas Løchen Økstad
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Telefon +47 22854789
Mobiltelefon +47 92603952
Rom 252 ZEB-bygningen
Treffetider Etter avtale
Brukernavn
Besøksadresse Sem Sælands vei 3 Farmasibygningen 0371 Oslo
Postadresse Postboks 1068 Blindern 0316 Oslo

ORCID

ORCID ID:0000-0001-9351-8535

Faglige interesser

Kartlegging av reguleringsmekanismer, resistensmekanismer og den molekylære basis for mikrobiell biofilmdannelse hos patogenebakterier, ved bruk av modeller som Acinetobacter baumannii og Bacillus cereus.

Kartlegging av resistensmekanismer mot nye antimikrobielle legemidler, inkludert adjuvanssubstanser som resistenshemmere.

Mikrobielle genomstudier, fortrinnsvis av patogene (sykdomsfremkallende) bakterier, inkludert repeterte og mobile elementer og global transkriptomkartlegging.

Publikasjons- og siteringsinformasjon

Google Scholar: >6176 siteringer, h-index 27

Bakgrunn

  • Professor,Farmasøytisk institutt,Universitetet i Oslo, 2015 - present
  • Gjesteforsker,Macquarie University, Sydney, Australia, 2016
  • Gjesteforsker, INRA, Paris, Frankrike, 2016
  • Førsteamanuensis, Farmasøytisk institutt,Universitetet i Oslo, 2005 - 2015
  • Gjesteforsker, Macquarie University, Sydney, Australia, 2011
  • Postdoktor, Universitetet i Oslo, 2000 - 2002, 2002 - 2005
  • Gjesteforsker, Universitetet i Oxford, England, 2001
  • Labmedarbeider, Forsvarets Forskningsinstitutt (førstegangstjeneste), 1999 - 2000
  • Dr. scient., Universitetet i Oslo, 2000
  • Cand. scient., Universitetet i Oslo, 1995

Undervisning

Jeg underviser i følgende emner i det 5-årige masterstudiet i farmasi:

Verv

Samarbeid

Utland:

Norge:

CV

  • For mer informasjon, se min CV

 

Emneord: Mikrobiologi, Antibiotikaresistens, Evolusjon, Biofilm, Genomer, DNA sekvensering, Bioinformatikk, Livsvitenskap, Life Science, Molekylærbiologi, Bioteknologi, Biologi, Matforgiftning

Publikasjoner

  • Tourasse, Nicolas Jacques; Jolley, Keith A.; Kolstø, Anne-Brit & Økstad, Ole Andreas (2023). Core genome multilocus sequence typing scheme for Bacillus cereus group bacteria. Research in Microbiology. ISSN 0923-2508. 174(6). doi: 10.1016/j.resmic.2023.104050. Fulltekst i vitenarkiv
  • Marienborg, Kaja; Ambur, Ole Herman; Økstad, Ole Andreas & Skaare, Dagfinn (2023). The alginate polymer OligoG alters susceptibility of biofilm-embedded non-typeable Haemophilus influenzae to ampicillin and ciprofloxacin. JAC-Antimicrobial Resistance (JAC-AMR). ISSN 2632-1823. 5(2). doi: 10.1093/jacamr/dlad046. Fulltekst i vitenarkiv
  • Nystedt, Helene Liepelt; Grønlien, Krister Gjestvang; Rolfsnes, Rebekka Rekkedal; Winther-Larsen, Hanne Cecilie; Økstad, Ole Andreas & Tønnesen, Hanne Hjorth (2023). Neutral natural deep eutectic solvents as anti-biofilm agents. Biofilm. 5. doi: 10.1016/j.bioflm.2023.100114.
  • Lin, Yicen; Alstrup, Monica; Pang, Janet Ka Yan; Maróti, Gergely; Er-Rafik, Mériem & Tourasse, Nicolas [Vis alle 8 forfattere av denne artikkelen] (2021). Adaptation of Bacillus thuringiensis to plant colonization affects differentiation and toxicity. mSystems. ISSN 2379-5077. 6(5). doi: 10.1128/mSystems.00864-21. Fulltekst i vitenarkiv
  • Smith, Veronika; Nilssen, Ida Kristine Bu; Hegna, Ida Kristin; Dalhus, Bjørn; Fagerlund, Annette & Økstad, Ole Andreas (2021). CdgL is a degenerate nucleotide cyclase domain protein affecting flagellin synthesis and motility in Bacillus thuringiensis. Research in Microbiology. ISSN 0923-2508. 172(4-5). doi: 10.1016/j.resmic.2021.103850. Fulltekst i vitenarkiv
  • Attieh, Zaynoun; Mouawad, Carine; Rejasse, Agnès; Jehanno, Isabelle; Perchat, Stéphane & Hegna, Ida Kristin [Vis alle 10 forfattere av denne artikkelen] (2020). The fliK Gene Is Required for the Resistance of Bacillus thuringiensis to Antimicrobial Peptides and Virulence in Drosophila melanogaster. Frontiers in Microbiology. ISSN 1664-302X. 11. doi: 10.3389/fmicb.2020.611220.
  • Smith, Veronika; Josefsen, Malin; Lindbäck, Toril; Hegna, Ida Kristin; Finke, Sarah & Tourasse, Nicolas Jacques [Vis alle 9 forfattere av denne artikkelen] (2020). MogR is a ubiquitous transcriptional repressor affecting motility, biofilm formation and virulence in Bacillus thuringiensis. Frontiers in Microbiology. ISSN 1664-302X. 11. doi: 10.3389/fmicb.2020.610650. Fulltekst i vitenarkiv
  • Samuelsen, Ørjan; Åstrand, Ove Alexander Høgmoen; Frøhlich, Christopher; Heikal, Adam; Skagseth, Susann & Carlsen, Trine Josefine Olsen [Vis alle 17 forfattere av denne artikkelen] (2020). ZN148 Is a Modular Synthetic Metallo-beta-Lactamase Inhibitor That Reverses Carbapenem Resistance in Gram-Negative Pathogens In Vivo. Antimicrobial Agents and Chemotherapy. ISSN 0066-4804. 64(6). doi: 10.1128/AAC.02415-19. Fulltekst i vitenarkiv
  • Finke, Sarah; Fagerlund, Annette; Smith, Veronika; Krogstad, Veronica; Zhang, Mimmi Jingxi & Saragliadis, Athanasios [Vis alle 9 forfattere av denne artikkelen] (2019). Bacillus thuringiensis CbpA is a collagen binding cell surface protein under c-di-GMP control. The Cell Surface. ISSN 2468-2330. 5, s. 1–12. doi: 10.1016/j.tcsw.2019.100032. Fulltekst i vitenarkiv
  • Ikram, Samman; Heikal, Adam; Finke, Sarah; Hofgaard, Antje; Rehman, Yasir & Sabri, Anjum Nasim [Vis alle 7 forfattere av denne artikkelen] (2019). Bacillus cereus biofilm formation on central venous catheters of hospitalised cardiac patients. Biofouling (Print). ISSN 0892-7014. 35(2), s. 204–216. doi: 10.1080/08927014.2019.1586889. Fulltekst i vitenarkiv
  • Candela, Thomas; Fagerlund, Annette; Buisson, Christophe; Gilois, Nathalie; Kolstø, Anne-Brit & Økstad, Ole Andreas [Vis alle 10 forfattere av denne artikkelen] (2019). CalY is a major virulence factor and a biofilm matrix protein. Molecular Microbiology. ISSN 0950-382X. 111(6), s. 1416–1429. doi: 10.1111/mmi.14184.
  • Taiaroa, George; Samuelsen, Ørjan; Kristensen, Tom; Økstad, Ole Andreas & Heikal, Adam (2018). Complete Genome Sequence of Pseudomonas aeruginosa K34-7, a Carbapenem-Resistant Isolate of the High-Risk Sequence Type 233. Microbiology Resource Announcements (MRA). ISSN 2169-8287. 7(4), s. 1–2. doi: 10.1128/MRA.00886-18. Fulltekst i vitenarkiv
  • Carlson, Colin; Getz, Wayne M.; Kausrud, Kyrre Linné; Cizauskas, Carrie A.; Blackburn, Jason K. & Bustos Carrillo, Fausto A [Vis alle 14 forfattere av denne artikkelen] (2018). Spores and soil from six sides: interdisciplinarity and the environmental biology of anthrax (Bacillus anthracis). Biological Reviews. ISSN 1464-7931. 93(4), s. 1813–1831. doi: 10.1111/brv.12420.
  • Schnaars, Christian; kildahl-Andersen, Geir; Prandina, Anthony; Popal, Roya; Radix, Sylvie & Le Borgne, Marc [Vis alle 16 forfattere av denne artikkelen] (2018). Synthesis and preclinical evaluation of TPA-based zinc chelators as metallo-β-lactamase inhibitors. ACS Infectious Diseases. ISSN 2373-8227. 4(9), s. 1407–1422. doi: 10.1021/acsinfecdis.8b00137.
  • Hassan, Karl A.; Fagerlund, Annette; Elbourne, Liam D.H.; Vörös, Aniko; Kroeger, Jasmin Kaori & Simm, Roger [Vis alle 12 forfattere av denne artikkelen] (2017). The putative drug efflux systems of the Bacillus cereus group. PLOS ONE. ISSN 1932-6203. 12(5), s. 1–25. doi: 10.1371/journal.pone.0176188. Fulltekst i vitenarkiv
  • Fagerlund, Annette; Smith, Veronika; Kjendseth, Åsmund Røhr; Lindbäck, Toril; Parmer, Marthe Petrine & Andersson, K. Kristoffer [Vis alle 8 forfattere av denne artikkelen] (2016). Cyclic diguanylate regulation of Bacillus cereus group biofilm formation. Molecular Microbiology. ISSN 0950-382X. 101(3), s. 471–494. doi: 10.1111/mmi.13405.
  • Vörös, Aniko; Simm, Roger; Slamti, Leyla; McKay, Matthew J.; Hegna, Ida Kristin & Nielsen-Leroux, Christina [Vis alle 12 forfattere av denne artikkelen] (2014). SecDF as part of the sec-translocase facilitates efficient secretion of Bacillus cereus toxins and cell wall-associated proteins. PLOS ONE. ISSN 1932-6203. 9:e0103326(8). doi: 10.1371/journal.pone.0103326.
  • Fagerlund, Annette; Dubois, Thomas; Økstad, Ole Andreas Løchen; Verplaetse, Emilie; Gilois, Nathalie & Bennaceur, Imene [Vis alle 12 forfattere av denne artikkelen] (2014). SinR controls enterotoxin expression in Bacillus thuringiensis biofilms. PLOS ONE. ISSN 1932-6203. 9(1). doi: 10.1371/journal.pone.0087532.
  • Vik, Unni; Logares, Ramiro; Blaalid, Rakel; Halvorsen, Rune; Carlsen, Tor & Bakke, Ingrid [Vis alle 9 forfattere av denne artikkelen] (2013). Different bacterial communities in ectomycorrhizae and surrounding soil. Scientific Reports. ISSN 2045-2322. 3(347). doi: 10.1038/srep03471. Fulltekst i vitenarkiv
  • Bräunlich, Paula Marie; Økstad, Ole Andreas Løchen; Slimestad, Rune; Wangensteen, Helle; Malterud, Karl Egil & Barsett, Hilde (2013). Effects of Aronia melanocarpa constituents on biofilm formation of Escherichia coli and Bacillus cereus. Molecules. ISSN 1431-5157. 18(12), s. 14989–14999. doi: 10.3390/molecules181214989.
  • Backe, Paul Hoff; Simm, Roger; Lærdahl, Jon Kristen; Dalhus, Bjørn; Fagerlund, Annette & Økstad, Ole Andreas Løchen [Vis alle 10 forfattere av denne artikkelen] (2013). A new family of proteins related to the HEAT-like repeat DNA glycosylases with affinity for branched DNA structures. Journal of Structural Biology. ISSN 1047-8477. 183(1), s. 66–75. doi: 10.1016/j.jsb.2013.04.007. Fulltekst i vitenarkiv
  • Kristoffersen, Simen Martens; Haase, Chad; Weil, M. Ryan; Passalacqua, Karla D.; Niazi, Fahim & Hutchison, Stephen [Vis alle 11 forfattere av denne artikkelen] (2012). Global mRNA decay analysis at single nucleotide resolution reveals segmental and positional degradation patterns in a Gram-positive bacterium. Genome Biology. ISSN 1465-6906. 13(4). doi: 10.1186/gb-2012-13-4-r30.
  • Reiter, Lillian; Tourasse, Nicolas; Fouet, Agnes; Loll, Raphaël; Davison, Sophie & Økstad, Ole Andreas Løchen [Vis alle 8 forfattere av denne artikkelen] (2011). Evolutionary History and Functional Characterization of Three Large Genes Involved in Sporulation in Bacillus cereus Group Bacteria. Journal of Bacteriology. ISSN 0021-9193. 193(19), s. 5420–5430. doi: 10.1128/JB.05309-11.
  • Papazisi, Leka; Rasko, David A.; Ratnayake, Shashikala; Bock, Geoff R.; Remortel, Brian G. & Appalla, Lakshimi [Vis alle 19 forfattere av denne artikkelen] (2011). Investigating the genome diversity of B. cereus and evolutionary aspects of B. anthracis emergence. Genomics. ISSN 0888-7543. 98(1), s. 26–39. doi: 10.1016/j.ygeno.2011.03.008.
  • Kristoffersen, Simen Martens; Tourasse, Nicolas; Kolstø, Anne-Brit & Økstad, Ole Andreas Løchen (2011). Interspersed DNA Repeats bcr1-bcr18 of Bacillus cereus Group Bacteria Form Three Distinct Groups with Different Evolutionary and Functional Patterns. Molecular Biology and Evolution (MBE). ISSN 0737-4038. 28(2), s. 963–983. doi: 10.1093/molbev/msq269.
  • Tourasse, Nicolas; Helgason, Erlendur; Klevan, Leif Are; Sylvestre, Patricia; Moya, Maryse & Haustant, Michel [Vis alle 10 forfattere av denne artikkelen] (2011). Extended and global phylogenetic view of the Bacillus cereus group population by combination of MLST, AFLP, and MLEE genotyping data. Food Microbiology. ISSN 0740-0020. 28(2), s. 236–244. doi: 10.1016/j.fm.2010.06.014.
  • Tourasse, Nicolas; Økstad, Ole Andreas Løchen & Kolstø, Anne-Brit (2010). HyperCAT: an extension of the SuperCAT database for global multi-scheme and multi-datatype phylogenetic analysis of the Bacillus cereus group population. Database: The Journal of Biological Databases and Curation. ISSN 1758-0463.
  • Kolstø, Anne-Brit; Tourasse, Nicolas & Økstad, Ole Andreas Løchen (2009). What Sets Bacillus anthracis Apart from Other Bacillus Species? Annual Review of Microbiology. ISSN 0066-4227. 63, s. 451–476. doi: 10.1146/annurev.micro.091208.073255.
  • Stabell, Fredrik Bernhard; Jacobsen, Wolfgang Mathias; Risøen, Per Arne; Kolstø, Anne-Brit & Økstad, Ole Andreas Løchen (2009). ORF 2 from the Bacillus cereus linear plasmid pBClin15 encodes a DNA binding protein. Letters in Applied Microbiology. ISSN 0266-8254. 48(1), s. 51–57. doi: 10.1111/j.1472-765X.2008.02483.x.
  • Gohar, Michel; Fægri, Karoline; Perchat, Stephane; Ravnum, Solveig; Økstad, Ole Andreas Løchen & Gominet, Myriam [Vis alle 8 forfattere av denne artikkelen] (2008). The PlcR Virulence Regulon of Bacillus cereus. PLOS ONE. ISSN 1932-6203. 3(7). doi: 10.1371/journal.pone.0002793.
  • Kristoffersen, Simen Martens; Ravnum, Solveig; Tourasse, Nicolas; Økstad, Ole Andreas Løchen; Kolstø, Anne-Brit & Davies, William (2007). Low concentrations of bile salts induce stress responses and reduce motility in Bacillus cereus ATCC 14570. Journal of Bacteriology. ISSN 0021-9193. 189(14), s. 5302–5313. doi: 10.1128/JB.00239-07.
  • Rasko, DA; Rosovitz, MJ; Økstad, Ole Andreas Løchen; Fouts, DE; Jiang, LX & Cer, RZ [Vis alle 9 forfattere av denne artikkelen] (2007). Complete sequence analysis of novel plasmids from emetic and periodontal Bacillus cereus isolates reveals a common evolutionary history among the B-cereus-group plasmids, including Bacillus anthracis pXO1. Journal of Bacteriology. ISSN 0021-9193. 189(1), s. 52–64. doi: 10.1128/JB.01313-06.
  • Klevan, Leif Are; Tourasse, Nicolas; Stabell, Fredrik Bernhard; Kolstø, Anne-Brit & Økstad, Ole Andreas Løchen (2007). Exploring the evolution of the Bacillus cereus group repeat element bcr1 by comparative genome analysis of closely related strains. Microbiology (Reading). ISSN 1350-0872. 153, s. 3894–3908. doi: 10.1099/mic.0.2007/005504-0.
  • Tourasse, Nicolas; Helgason, Erlendur; Økstad, Ole Andreas Løchen; Hegna, Ida Kristin & Kolstø, Anne-Brit (2006). The Bacillus cereus group: novel aspects of population structure and genome dynamics. Journal of Applied Microbiology. ISSN 1364-5072. 101, s. 579–593.
  • Økstad, Ole Andreas Løchen; Tourasse, Nicolas; Stabell, Fredrik Bernhard; Sundfær, Cathrine Kleven; Jacobsen, Wolfgang Mathias & Risøen, Per Arne [Vis alle 8 forfattere av denne artikkelen] (2004). The bcr1 DNA repeat element is specific to the Bacillus cereus group and exhibits mobile element characteristics. Journal of Bacteriology. ISSN 0021-9193. 186(22), s. 7714–7725.
  • Rasko, David A; Ravel, Jacques; Økstad, Ole Andreas Løchen; Helgason, Erlendur; Cer, Regina & Jiaug, L [Vis alle 15 forfattere av denne artikkelen] (2004). The genome sequence of Bacillus cereus ATCC 10987 reveals metabolic adaptations and a large plasmid related to Bacillus anthracis pXO1. Nucleic Acids Research (NAR). ISSN 0305-1048. 32(3), s. 977–988.
  • Read, Timothy D.; Peterson, Scott N.; Tourasse, Nicolas; Baillie, L. W.; Paulsen, I. W. & Nelson, K. E. [Vis alle 52 forfattere av denne artikkelen] (2003). The genome sequence of Bacillus anthracis Ames and comparison to closely related bacteria. Nature. ISSN 0028-0836. 423, s. 81–86.

Se alle arbeider i Cristin

  • Økstad, Ole Andreas (2023). The dynamic trio - the good, the bad and the ugly.
  • Økstad, Ole Andreas (2023). Reversing carbapenem resistance in Gram-negative pathogens - Preclinical development of the modular synthetic metallo-β-lactamase inhibitor APC148.
  • Ambur, Ole Herman; Skaare, Dagfinn & Økstad, Ole Andreas Løchen (2023). Alginate polymer alters susceptibility of biofilm-embedded non-typable Haemophilus influenzae .
  • Glenna, S; Orr, Russell John Scott; Økstad, Ole Andreas & Voie, ØA (2023). Changes in the skin microbiome in response to antiseptic use during a NATO exercise: a metagenomic approach.
  • Urtubia, Areli Moe; Winther-Larsen, Hanne Cecilie & Økstad, Ole Andreas (2023). Novel principles of drug resistance in the WHO priority 1 pathogen Acinetobacter baumannii.
  • Smith, V; Hovland, R; Rongved, Pål & Økstad, Ole Andreas (2023). Preclinical development of a novel metallo-β-lactamase inhibitor APC148.
  • Linke, Dirk; Økstad, Ole Andreas; Haugen, Håvard Jostein & Winther-Larsen, Hanne Cecilie (2021). The exchange program MISC - Options for internships at the University of Oslo (with descriptions of current projects).
  • Liskiewicz, Krystyna Anna; Sunde, Pia Titterud; Verket, Anders; Økstad, Ole Andreas & Simm, Roger (2019). C-di-GMP signaling in Treponema denticola and its role in pathogenesis of periodontal diseases.
  • Liskiewicz, Krystyna Anna; Sunde, Pia Titterud; Verket, Anders; Økstad, Ole Andreas & Simm, Roger (2019). C-di-GMP signaling in Treponema denticola and its role in pathogenesis of periodontal diseases.
  • Økstad, Ole Andreas Løchen & Linke, Dirk (2018). Hvor farlig er antibiotikaresistens? Ingeniørenes Stemme. Vinter 2018, s. 37–37.
  • Heggelund, Julie Elisabeth; Hausvik, Emil; Carvalho, Luiz; Økstad, Ole Andreas Løchen; Martinez, Aurora & Goldman, Adrian (2018). Targeting MFS transporters to switch off antibiotic resistance in tuberculosis.
  • Heikal, Adam; Samuelsen, Ørjan; Kristensen, Tom & Økstad, Ole Andreas Løchen (2017). Complete genome sequence of a multidrug-resistant, blaNDM-1-expressing Klebsiella pneumoniae K66-45 clinical isolate from Norway. Microbiology Resource Announcements (MRA). ISSN 2169-8287. 5:e00601(27), s. 1–2. doi: 10.1128/genomeA.00601-17.
  • Ho, Giang Thanh Thi; Braünlich, Marie; Økstad, Ole Andreas Løchen; Slimestad, Rune; Wangensteen, Helle & Malterud, Karl Egil [Vis alle 7 forfattere av denne artikkelen] (2015). Effects of Aronia melanocarpa on biofilm formation of Escherichia coli and Bacillus cereus.
  • Ho, Giang Thanh Thi; Braünlich, Marie; Wangensteen, Helle; Malterud, Karl Egil; Økstad, Ole Andreas Løchen & Christensen, Hege Staaland [Vis alle 9 forfattere av denne artikkelen] (2014). Spennende helseeffekter av aroniabær.
  • Røhr, Åsmund Kjendseth; Fagerlund, Annette; Økstad, Ole Andreas Løchen & Andersson, K. Kristoffer (2013). Characterization of a redox sensor involved in Bacillus cereus biofilm formation. NBS-nytt. ISSN 0801-3535. 1, s. 62–62.
  • Økstad, Ole Andreas Løchen & Tourasse, Nicolas (2009). Genome dynamics in the Bacillus cereus group of bacteria: introns and repeats.
  • Kolstø, Anne-Brit; Økstad, Ole Andreas Løchen; Tourasse, Nicolas; Kristoffersen, Simen Martens; Fægri, Karoline & Fagerlund, Annette (2009). Bacillus cereus group: genome plasticity for better adaptation.
  • Kolstø, Anne-Brit; Tourasse, Nicolas; Økstad, Ole Andreas Løchen; Fægri, Karoline & Fagerlund, Annette (2009). Bacillus cereus gene regulation and pathogenomics.
  • Økstad, Ole Andreas Løchen (2009). Differential gene expression and gene regulation during biofilm formation in Bacillus thuringiensis.
  • Tourasse, Nicolas; Helgason, Erlendur; Klevan, Leif Are; Sylvestre, Patricia; Moya, Maryse & Haustant, Michel [Vis alle 10 forfattere av denne artikkelen] (2009). Global multi-datatype phylogenetic analysis of the Bacillus cereus group reveals new lineages and clusters.
  • Kristoffersen, Simen Martens; Tourasse, Nicolas; Bakka, Eirik Rødseth; Read, Timothy D.; Kolstø, Anne-Brit & Økstad, Ole Andreas Løchen (2009). Repeated DNA elements in the Bacillus cereus group - implications for genome dynamics and stability of messenger RNA.
  • Fagerlund, Annette; Kolstø, Anne-Brit & Økstad, Ole Andreas Løchen (2009). Differential gene expression and gene regulation during Bacillus thuringiensis biofilm formation.
  • Økstad, Ole Andreas Løchen; Klevan, Leif Are; Tourasse, Nicolas; Kristoffersen, Simen Martens; Langørgen, Heidi K. & Stabell, Fredrik Bernhard [Vis alle 7 forfattere av denne artikkelen] (2008). Mobile chromosomal repeat elements in Bacillus cereus, B. thuringiensis, and B. anthracis − Comparative genomics and transcriptional analysis.
  • Økstad, Ole Andreas Løchen (2008). Bacillus anthracis, B. cereus, and B. thuringiensis − pathogenic spore-forming bacteria ACTing out an identity crisis.
  • Klevan, Leif Are; Tourasse, Nicolas; Kristoffersen, Simen Martens; Langørgen, Heidi K.; Stabell, Fredrik Bernhard & Kolstø, Anne-Brit [Vis alle 7 forfattere av denne artikkelen] (2008). Mobile chromosomal repeat elements in pathogenic Bacilli − comparative genomics of isolates closely related to Bacillus anthracis and co-transcription with neighbour genes.
  • Kristoffersen, Simen Martens; Tourasse, Nicolas; Klevan, Leif Are; Bakka, Eirik Rødseth; Kolstø, Anne-Brit & Økstad, Ole Andreas Løchen (2008). The Mobile Chromosomal Repeat Element bcr1in Bacillus cereus Stabilizes Adjacent mRNAs.
  • Tourasse, Nicolas; Økstad, Ole Andreas Løchen; Stabell, Fredrik Bernhard; Kristoffersen, Simen Martens & Kolstø, Anne-Brit (2008). Genome dynamics in Bacillus cereus − Bacillus anthracis − Bacillus thuringiensis.
  • Kristoffersen, Simen Martens; Klevan, Leif Are; Tourasse, Nicolas; Langørgen, Heidi K.; Stabell, Fredrik Bernhard & Kolstø, Anne-Brit [Vis alle 7 forfattere av denne artikkelen] (2008). The mobile chromosomal repeat element bcr1 from the Bacillus cereus group is co−transcribed with neighboring genes and predicted to fold into a double hairpin−like structure.
  • Økstad, Ole Andreas Løchen; Klevan, Leif Are; Tourasse, Nicolas; Kristoffersen, Simen Martens; Langørgen, Heidi K. & Stabell, Fredrik Bernhard [Vis alle 7 forfattere av denne artikkelen] (2008). Mobile chromosomal repeat elements in pathogenic bacilli − comparative genomics and transcriptional analysis.
  • Økstad, Ole Andreas Løchen & Kolstø, Anne-Brit (2007). Bacillus ACT 2007 - Oslo, 17-21 June 2007. NBS-nytt. ISSN 0801-3535. s. 28–30.
  • Økstad, Ole Andreas Løchen & Kolstø, Anne-Brit (2007). Mikrobiologi-konferanse i FI-regi. Norsk Farmaceutisk Tidsskrift. ISSN 0029-1935. s. 10–10.
  • Økstad, Ole Andreas Løchen; Ravel, Jacques; Rasko, David A; Rosovitz, MJ; Tourasse, Nicolas & Kolstø, Anne-Brit (2007). Comprehensive whole genome sequence analysis of clinical Bacillus cereus isolates from different human infections.
  • Økstad, Ole Andreas Løchen; Klevan, Are; Tourasse, Nicolas; Stabell, Fredrik Bernhard; Kristoffersen, Simen Martens & Kolstø, Anne-Brit (2007). Mobile chromosomal repeat elements unique to the Bacillus cereus group − chromosomal organization, transcription, and secondary structure.
  • Kristoffersen, Simen Martens; Ravnum, Solveig; Tourasse, Nicolas; Økstad, Ole Andreas Løchen; Kolstø, Anne-Brit & Davies, William (2007). Gene transcription responses to bile salts in Bacillus cereus ATCC 14579 – in vitro modeling of GI-tract bile exposure.
  • Økstad, Ole Andreas Løchen; Tourasse, Nicolas; Hegna, Ida Kristin & Kolstø, Anne-Brit (2007). Functional and comparative genomics in pathogenic Bacillus species.
  • Fægri, Karoline; Hegna, Ida Kristin; Økstad, Ole Andreas Løchen & Kolstø, Anne-Brit (2007). Comparative analysis of global gene expression in Bacillus cereus ATCC 14579 and a deletion mutant of a membrane transporter with similarity to tetracycline resistance genes.
  • Økstad, Ole Andreas Løchen; Klevan, Are; Tourasse, Nicolas; Stabell, Fredrik Bernhard & Kolstø, Anne-Brit (2007). Mobile chromosomal repeat elements in Bacillus cereus, B. thuringiensis and B. anthracis.
  • Biørnstad, Truls Johan; Jensen, Christine; Gohar, Michel; Kolstø, Anne-Brit & Økstad, Ole Andreas Løchen (2007). Biofilm formation in Bacillus cereus group pathogens − screening of isolates and functional dissection of candidate genes potentially involved in the process.
  • Klevan, Are; Kristoffersen, Simen Martens; Langørgen, Heidi K.; Tourasse, Nicolas; Stabell, Fredrik Bernhard & Kolstø, Anne-Brit [Vis alle 7 forfattere av denne artikkelen] (2007). THE MOBILE CHROMOSOMAL REPEAT ELEMENT BCR1 IN BACILLUS CEREUS, B. THURINGIENSIS AND B. ANTHRACIS.
  • Kristoffersen, Simen Martens; Ravnum, Solveig; Tourasse, Nicolas; Økstad, Ole Andreas Løchen; Kolstø, Anne-Brit & Davies, William (2007). Low concentrations of bile salts induce stress responses and reduce motility in the Bacillus cereus type strain.
  • Fægri, Karoline; Ravnum, Solveig; Økstad, Ole Andreas Løchen; Tourasse, Nicolas & Kolstø, Anne-Brit (2007). Bruk av mikromatriser for å studere genregulering i Bacillus cereus.
  • Økstad, Ole Andreas Løchen (2006). Infeksjonssykdommenes retur - hva kan genomforskning på patogene bakterier fortelle oss?
  • Økstad, Ole Andreas Løchen; Tourasse, Nicolas; Rasko, David A; Meisal, Roger; Helgason, Erlendur & Kolstø, Anne-Brit [Vis alle 8 forfattere av denne artikkelen] (2006). Gene discovery by comparative genome hybridization (GDCGH) − investigating gene diversity in the Bacillus cereus group of bacterial pathogens.
  • Fægri, Karoline; Ravnum, Solveig; Økstad, Ole Andreas Løchen; Tourasse, Nicolas & Kolstø, Anne-Brit (2006). Comparing wt Bacillus cereus with a transcriptional regulator mutant.
  • Klevan, Leif Are; Tourasse, Nicolas; Stabell, Fredrik Bernhard; Kolstø, Anne-Brit & Økstad, Ole Andreas Løchen (2006). An evolutionary snapshot of the repeated element bcr1 in Bacillus cereus group strains close to the Bacillus anthracis cluster − transcription analysis, RNA folding, and traces of mobility.
  • Tourasse, Nicolas; Helgason, Erlendur; Økstad, Ole Andreas Løchen & Kolstø, Anne-Brit (2006). Novel aspects of population and genome dynamics in the Bacillus cereus group of bacterial pathogens.
  • Klevan, Are; Tourasse, Nicolas; Stabell, Fredrik Bernhard; Helgason, Erlendur; Kolstø, Anne-Brit & Økstad, Ole Andreas Løchen (2006). Genome dynamics in Bacillus cereus group pathogens - in silico experiments predict mobility of the bcr1 repeat element is related to RNA secondary structure stability.
  • Tourasse, Nicolas; Helgason, Erlendur; Økstad, Ole Andreas Løchen & Kolstø, Anne-Brit (2006). The Bacillus cereus group: novel aspects of population structure and genome dynamics.
  • Fægri, Karoline; Ravnum, Solveig; Økstad, Ole Andreas Løchen; Tourasse, Nicolas & Kolstø, Anne-Brit (2006). Comparative analysis of global gene expression in Bacillus cereus ATCC 14579 and a derivative strain following gene deletion of delta-PlcR, a transcriptional regulator of extracellular virulence.
  • Kristoffersen, Simen Martens; Ravnum, Solveig; Økstad, Ole Andreas Løchen; Kolstø, Anne-Brit & Davies, William (2006). Transcriptome analysis of bile salt treated Bacillus cereus ATCC 14579.
  • Biørnstad, Truls Johan; Kolstø, Anne-Brit & Økstad, Ole Andreas Løchen (2006). Screening for biofilm formation among bacteria from the Bacillus cereus group.
  • Biørnstad, Truls Johan; Jensen, Christine; Gohar, Michel; Kolstø, Anne-Brit & Økstad, Ole Andreas Løchen (2006). Screening for biofilm formation among bacteria from the Bacillus cereus group and dissection of candidate genes potentially involved in the process.
  • Klevan, Leif Are; Tourasse, Nicolas; Helgason, Erlendur; Økstad, Ole Andreas Løchen & Kolstø, Anne-Brit (2005). Repeated element bcr1 from the Bacillus cereus group: Distribution, evolution and possible mobility in a set of strains closely related to B. anthracis.
  • Klevan, Leif Are; Tourasse, Nicolas; Helgason, Erlendur; Økstad, Ole Andreas Løchen & Kolstø, Anne-Brit (2005). The repeated element bcr1: Distribution, evolution and possible mobility in the Bacillus cereus group of bacteria.
  • Klevan, Leif Are; Tourasse, Nicolas; Helgason, Erlendur; Økstad, Ole Andreas Løchen & Kolstø, Anne-Brit (2005). Distribution, evolution and possible mobility of the repeated element bcr1 by examination of Bacillus cereus group strains from the B. anthracis cluster.
  • Klevan, Leif Are; Tourasse, Nicolas; Stabell, Fredrik Bernhard; Helgason, Erlendur; Kolstø, Anne-Brit & Økstad, Ole Andreas Løchen (2005). Exploring the phylogeny of Bacillus cereus strains close to the B. anthracis cluster through distribution and sequence analysis of the repeated element bcr1.
  • Økstad, Ole Andreas Løchen (2004). Hva skiller en vanlig matforgiftningsbakterie fra en akutt dødelig bakterie - djevelen er i detaljene.
  • Økstad, Ole Andreas Løchen; Tourasse, Nicolas; Stabell, Fredrik Bernhard; Sundfær, Cathrine Kleven; Klevan, Are & Risøen, Per Arne [Vis alle 8 forfattere av denne artikkelen] (2004). bcr1, a novel mobile element specific to the Bacillus cereus group?
  • Økstad, Ole Andreas Løchen; Tourasse, Nicolas; Stabell, Fredrik Bernhard; Sundfær, Cathrine Kleven; Klevan, Are & Risøen, Per Arne [Vis alle 8 forfattere av denne artikkelen] (2004). Comparative genome analysis of pathogenic Bacilli – the bcr1 DNA repeat is specific to the Bacillus cereus group and exhibits mobile lement characteristics.
  • Økstad, Ole Andreas Løchen; Helgason, Erlendur; Tourasse, Nicolas & Kolstø, Anne-Brit (2004). Whole genome sequencing reveals unexpected similarities between a Bacillus cereus dairy isolate and highly virulent Bacillus anthracis, the cause of anthrax.
  • Økstad, Ole Andreas Løchen (2003). The Bacillus cereus group of bacteria � the good, the bad, and the ugly.
  • Økstad, Ole Andreas Løchen (2003). Bacillus anthracis og miltbrann.
  • Stenmark, Harald Alfred; Tourasse, Nicolas; Økstad, Ole Andreas Løchen; Helgason, Erlendur & Kolstø, Anne-Brit (2003). Norsk forskningsgruppe deltar i avsløring av miltbrannbakteriens hemmeligheter. NBS-nytt. ISSN 0801-3535. s. 6–6.

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Publisert 3. nov. 2010 15:46 - Sist endret 8. jan. 2024 12:50