Oana Ciofu

Oana Ciofu

Professor

Member of:

    ORCID: 0000-0001-5648-4858

    Publication year:
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    1 - 50 out of 118Page size: 50
    1. 1994
    2. Published

      Antibodies against chromosomal beta-lactamase.

      Giwercman, B., Rasmussen, J. W., Ciofu, Oana, Clemmentsen, I., Schumacher, H. & Høiby, Niels, 1994, In: Antimicrobial Agents and Chemotherapy. 38, 10, p. 2306-10 4 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    3. Published

      Development of antibiotic resistance in Pseudomonas aeruginosa during two decades of antipseudomonal treatment at the Danish CF Center.

      Ciofu, Oana, Giwercman, B., Pedersen, S. S. & Høiby, Niels, 1994, In: Acta Pathologica Microbiologica et Immunologica Scandinavica. 102, 9, p. 674-80 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    4. 1995
    5. Published

      Antibodies against Pseudomonas aeruginosa chromosomal beta-lactamase inpatients with cystic fibrosis are markers of the development of resistance of P. aeruginosa to beta-lactams.

      Ciofu, Oana, Giwercman, B., Walter-Rasmussen, J., Pressler, T., Pedersen, S. S. & Høiby, Niels, 1995, In: Journal of Antimicrobial Chemotherapy. 35, 2, p. 295-304 9 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    6. 1996
    7. Published

      Meropenem in cystic fibrosis patients infected with resistant Pseudomonas aeruginosa or Burkholderia cepacia and with hypersensitivity to beta-lactam antibiotics.

      Ciofu, Oana, Jensen, T., Pressler, T., Johansen, Helle Krogh, Bender Koch, Christian & Høiby, Niels, 1996, In: Clinical Microbiology and Infection. 2, 2, p. 91-98 7 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    8. Published

      Quantitative analysis of the IgG and IgG subclass immune responses to chromosomal Pseudomonas aeruginosa beta-lactamase in serum from patients with cystic fibrosis by western blotting and laser scanning densitometry.

      Petersen, T. D., Ciofu, Oana, Pressler, T., Giwercman, B., Pedersen, S. S. & Høiby, Niels, 1996, In: Thorax. 51, 7, p. 733-8 5 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    9. Published

      Use of carbapenems and other antibiotics for pulmonary infections in patients with cystic fibrosis.

      Høiby, Niels, Ciofu, Oana, Jensen, T., Pressler, T., Johansen, Helle Krogh & Koch, C., 1996, In: Pediatric Infectious Disease Journal. 15, 8, p. 738-43 5 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    10. 1997
    11. Published

      Pseudomonas aeruginosa isolates from patients with cystic fibrosis have different beta-lactamase expression phenotypes but are homogeneous in the ampC-ampR genetic region.

      Campbell, J. I., Ciofu, Oana & Høiby, Niels, 1997, In: Antimicrobial Agents and Chemotherapy. 41, 6, p. 1380-4 4 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    12. Published

      The clonal antibody response to Pseudomonas aeruginosa heat shock protein is highly diverse in cystic fibrosis patients.

      Ulanova, M., Petersen, T. D., Ciofu, Oana, Jensen, P., Hahn-Zoric, M., Hanson, L. A. & Høiby, Niels, 1997, In: Acta Pathologica Microbiologica et Immunologica Scandinavica. 105, 6, p. 449-56 7 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    13. Published

      The influence of allotypes on the IgG subclass response to chromosomal beta-lactamase of Pseudomonas aeruginosa in cystic fibrosis patients.

      Ciofu, Oana, Pressler, T., Pandey, J. P. & Høiby, Niels, 1997, In: Clinical and Experimental Immunology. 108, 1, p. 88-94 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    14. 1999
    15. Published

      Avidity of anti-P aeruginosa antibodies during chronic infection in patients with cystic fibrosis.

      Ciofu, Oana, Petersen, T. D., Jensen, P. & Høiby, Niels, 1999, In: Thorax. 54, 2, p. 141-4 3 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    16. Published

      Mucoid conversion of Pseudomonas aeruginosa by hydrogen peroxide: a mechanism for virulence activation in the cystic fibrosis lung.

      Mathee, K., Ciofu, Oana, Sternberg, C., Lindum, P. W., Campbell, J. I., Jensen, P., Johnsen, A. H., Givskov, Michael, Ohman, D. E., Molin, S., Høiby, Niels & Kharazmi, A., 1999, In: Microbiology. 145 ( Pt 6), p. 1349-57 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    17. 2000
    18. Published

      Chromosomal beta-lactamase is packaged into membrane vesicles and secreted from Pseudomonas aeruginosa.

      Ciofu, Oana, Beveridge, T. J., Kadurugamuwa, J., Walther-Rasmussen, J. & Høiby, Niels, 2000, In: Journal of Antimicrobial Chemotherapy. 45, 1, p. 9-13 4 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    19. Published

      Molecular mechanisms of fluoroquinolone resistance in Pseudomonas aeruginosa isolates from cystic fibrosis patients.

      Jalal, S., Ciofu, Oana, Høiby, Niels, Gotoh, N. & Wretlind, B., 2000, In: Antimicrobial Agents and Chemotherapy. 44, 3, p. 710-2 2 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    20. Published

      Rapid development in vitro and in vivo of resistance to ceftazidime in biofilm-growing Pseudomonas aeruginosa due to chromosomal beta-lactamase

      Bagge, N., Ciofu, Oana, Skovgaard, Lene Theil & Høiby, Niels, Sep 2000, In: Acta Pathologica Microbiologica et Immunologica Scandinavica. 108, 9, p. 589-600 12 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    21. 2001
    22. Published

      Characterization of paired mucoid/non-mucoid Pseudomonas aeruginosa isolates from Danish cystic fibrosis patients: antibiotic resistance, beta-lactamase activity and RiboPrinting.

      Ciofu, Oana, Fussing, V., Bagge, N., Koch, C. & Høiby, Niels, 2001, In: Journal of Antimicrobial Chemotherapy. 48, 3, p. 391-6 5 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    23. Published

      Pseudomonas aeruginosa and the in vitro and in vivo biofilm mode of growth.

      Høiby, Niels, Johansen, Helle Krogh, Moser, C., Song, Z., Ciofu, Oana & Kharazmi, A., 2001, In: Microbes and Infection. 3, 1, p. 23-35 12 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    24. Published

      Typing of Pseudomonas aeruginosa strains in Norwegian cystic fibrosis patients.

      Fluge, G., Ojeniyi, B., Høiby, Niels, Digranes, A., Ciofu, Oana, Hunstad, E., Haanaes, O. C. & Storrøsten, O. T., 2001, In: Clinical Microbiology and Infection. 7, 5, p. 238-43 5 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    25. 2002
    26. Published

      Antibodies against beta-lactamase can improve ceftazidime treatment of lung infection with beta-lactam-resistant Pseudomonas aeruginosa in a rat model of chronic lung infection.

      Ciofu, Oana, Bagge, N. & Høiby, Niels, 2002, In: Acta Pathologica Microbiologica et Immunologica Scandinavica. 110, 12, p. 881-91 10 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    27. Published

      Constitutive high expression of chromosomal beta-lactamase in Pseudomonas aeruginosa caused by a new insertion sequence (IS1669) located in ampD.

      Bagge, N., Ciofu, Oana, Hentzer, M., Campbell, J. I. A., Givskov, Michael & Høiby, Niels, 2002, In: Antimicrobial Agents and Chemotherapy. 46, 11, p. 3406-11 5 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    28. 2003
    29. Published

      Pseudomonas aeruginosa alginate is refractory to Th1 immune response and impedes host immune clearance in a mouse model of acute lung infection.

      Song, Z., Wu, H., Ciofu, Oana, Kong, K., Høiby, Niels, Rygaard, J., Kharazmi, A. & Mathee, K., 2003, In: Journal of Medical Microbiology. 52, Pt 9, p. 731-40 9 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    30. Published

      Pseudomonas aeruginosa chromosomal beta-lactamase in patients with cystic fibrosis and chronic lung infection. Mechanism of antibiotic resistance and target of the humoral immune response.

      Ciofu, Oana, 2003, In: APMIS : Acta pathologica, microbiologica et immunologica Scandinavica. Supplementum. 116, p. 1-47 46 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    31. 2004
    32. Published

      Dynamics and spatial distribution of beta-lactamase expression in Pseudomonas aeruginosa biofilms.

      Bagge, N., Hentzer, M., Andersen, Jens Bo, Ciofu, Oana, Givskov, Michael & Høiby, Niels, 2004, In: Antimicrobial Agents and Chemotherapy. 48, 4, p. 1168-74 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    33. Published

      Pseudomonas aeruginosa biofilms exposed to imipenem exhibit changes in global gene expression and beta-lactamase and alginate production.

      Bagge, N., Schuster, M., Hentzer, M., Ciofu, Oana, Givskov, Michael, Greenberg, E. P. & Høiby, Niels, 2004, In: Antimicrobial Agents and Chemotherapy. 48, 4, p. 1175-87 12 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    34. 2005
    35. Published

      Heterogeneity of biofilms formed by nonmucoid Pseudomonas aeruginosa isolates from patients with cystic fibrosis.

      Lee, B., Haagensen, J. A. J., Ciofu, Oana, Andersen, Jens Bo, Høiby, Niels & Molin, S., 2005, In: Journal of Clinical Microbiology. 43, 10, p. 5247-55 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    36. Published

      Immunisation in the current management of cystic fibrosis patients.

      Malfroot, A., Adam, G., Ciofu, Oana, Döring, G., Knoop, C., Lang, A. B., Van Damme, P., Dab, I., Bush, A. & European Cystic Fibrosis Society (ECFS) Vaccination Group, E. C. F. S. (. V. G., 2005, In: Journal of Cystic Fibrosis. 4, 2, p. 77-87 10 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    37. Published

      Novel mouse model of chronic Pseudomonas aeruginosa lung infection mimicking cystic fibrosis

      Hoffmann, N., Rasmussen, T. B., Jensen, Peter Østrup, Stub, C., Hentzer, M., Molin, S., Ciofu, Oana, Givskov, Michael, Johansen, Helle Krogh & Høiby, Niels, 2005, In: Infection and Immunity. 73, 4, p. 2504-14 11 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    38. Published

      Occurrence of hypermutable Pseudomonas aeruginosa in cystic fibrosis patients is associated with the oxidative stress caused by chronic lung inflammation.

      Ciofu, Oana, Riis, B., Pressler, T., Poulsen, Henrik Enghusen & Høiby, Niels, 2005, In: Antimicrobial Agents and Chemotherapy. 49, 6, p. 2276-82 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    39. Published

      Erratum: Novel mouse model of chronic Pseudomonas aeruginosa lung infection mimicking cystic fibrosis (Infection and Immunity (2005) 73, 4 (2504-2514))

      Hoffmann, N., Rasmussen, T. B., Jensen, Peter Østrup, Stub, C., Hentzer, M., Molin, S., Ciofu, Oana, Givskov, Michael, Johansen, Helle Krogh & Høiby, Niels, Aug 2005, In: Infection and Immunity. 73, 8, p. 5290 1 p.

      Research output: Contribution to journal › Comment/debate › Research › peer-review

    40. 2007
    41. Published

      Cystic fibrosis: coping with resistance

      Ciofu, Oana, Høiby, Niels, Gould, I. M. & Meer, J. W. M. V. D., 2007, Antibiotic policies: fighting resistance. Springer, p. 149-174 25 p.

      Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

    42. Published

      Fremmedlegemeinfektioner--nyt om biofilm og quorum sensing.

      Høiby, Niels, Johansen, Helle Krogh, Ciofu, Oana, Jensen, Peter Østrup, Bjarnsholt, Thomas & Givskov, Michael, 2007, In: Ugeskrift for læger. 169, 48, p. 4163-6 3 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    43. Published

      Molecular epidemiology and dynamics of Pseudomonas aeruginosa populations in lungs of cystic fibrosis patients.

      Jelsbak, L., Johansen, Helle Krogh, Frost, A., Thøgersen, R., Thomsen, Line Elnif, Ciofu, Oana, Yang, L., Haagensen, J. A. J., Høiby, Niels & Molin, S., 2007, In: Infection and Immunity. 75, 5, p. 2214-24 10 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    44. 2008
    45. Published

      A master of adaptation and survival strategies

      Høiby, Niels, Johansen, H. K., Moser, C., Ciofu, Oana & Rehm, B. H. A., 2008, Pseudomonas. Model Organism, Pathogen, Cell Factory. Weinheim: Wiley-VCH, Vol. 2. p. 25-44 19 p.

      Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

    46. Published

      Generel bakteriologi

      Høiby, Niels, Ciofu, Oana, Johansen, H. K., Andersen, L. P. & Skinhøj, P., 2008, Klinisk Mikrobiologi og Infektionsmedicin. 3rd ed. København: FADL's Forlag, Vol. 4. p. 21-107 86 p.

      Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

    47. Published

      Investigation of the algT operon sequence in mucoid and non-mucoid Pseudomonas aeruginosa isolates from 115 Scandinavian patients with cystic fibrosis and in 88 in vitro non-mucoid revertants.

      Ciofu, Oana, Lee, B., Johannesson, M., Hermansen, N. O., Meyer, P., Høiby, Niels & Scandinavian Cystic Fibrosis Study Consortium, S. C. F. S. C., 2008, In: Microbiology. 154, Pt 1, p. 103-13 10 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    48. Published

      Maximum Likelihood based comparison of the specific growth rates for P. aeruginosa and four mutator strains.

      Philipsen, K. R., Christiansen, L. E., Mandsberg, L. F., Ciofu, Oana & Madsen, H., 2008, In: Journal of Microbiological Methods. 75, 3, p. 551-7 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    49. Published

      Spread of colistin resistant non-mucoid Pseudomonas aeruginosa among chronically infected Danish cystic fibrosis patients.

      Johansen, Helle Krogh, Moskowitz, S. M., Ciofu, Oana, Pressler, T. & Høiby, Niels, 2008, In: Journal of Cystic Fibrosis. 7, 5, p. 391-7 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    50. 2009
    51. Published

      Chromosomal mechanisms of aminoglycoside resistance in Pseudomonas aeruginosa isolates from cystic fibrosis patients

      Islam, S., Oh, H., Jalal, S., Karpati, F., Ciofu, Oana, Høiby, Niels & Wretlind, B., 2009, In: Clinical Microbiology and Infection. 15, 1, p. 60-6 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    52. Published

      Novel experimental Pseudomonas aeruginosa infection model mimicking long-term host-pathogen interactions in cystic fibrosis.

      Moser, Claus Ernst, van Gennip, M., Bjarnsholt, Thomas, Jensen, P. Ø., Lee, B., Hougen, H. P., Calum, Henrik Pierre, Ciofu, Oana, Givskov, Michael & Høiby, Niels, 2009, In: A P M I S. Acta Pathologica, Microbiologica et Immunologica Scandinavica. 117, p. 95-107 13 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    53. Published

      Respiratory syncytial virus infection facilitates acute colonization of Pseudomonas aeruginosa in mice

      de Vrankrijker, A. M. M., Wolfs, T. F. W., Ciofu, Oana, Høiby, Niels, van der Ent, C. K., Poulsen, Steen Seier & Johansen, Helle Krogh, 2009, In: Journal of Medical Virology. 81, 12, p. 2096-103 7 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    54. Published

      Sustainable plant production in a changing world - a cross Faculty research network at KU

      Strandmark, L. B., Schjoerring, Jan K., Christensen, Søren, Nybroe, O., Pedersen, J. G. T., Eilenberg, Jørgen, Munk, Lisa, Rønn, Regin, Ciofu, Oana, Bruun, Sander & Ørum, Jens Erik, 2009.

      Research output: Contribution to conference › Poster › Research

    55. Published

      Sustainable plant production in a changing world - formation of a cross-faculty network

      Strandmark, L. B., Schjoerring, Jan K., Christensen, Søren, Nybroe, O., Torp, J., Eilenberg, Jørgen, Munk, Lisa, Rønn, Regin, Ciofu, Oana, Bruun, Sander & Ørum, Jens Erik, 2009, In: IOP Conference Series: Earth and Environmental Science. 6, Session 34, 2 p., 342014.

      Research output: Contribution to journal › Conference abstract in journal › Research

    56. Published

      Novel experimental Pseudomonas aeruginosa lung infection model mimicking long-term host-pathogen interactions in cystic fibrosis

      Moser, C., Gennip, M. V., Bjarnsholt, Thomas, Jensen, Peter Østrup, Lee, B., Hougen, H. P., Calum, H., Ciofu, Oana, Givskov, Michael, Molin, S. & Høiby, Niels, 1 Feb 2009, In: Acta Pathologica Microbiologica et Immunologica Scandinavica. 117, 2, p. 95-107 13 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    57. Published

      Antibiotic resistance in Pseudomonas aeruginosa strains with increased mutation frequency due to inactivation of the DNA oxidative repair system

      Mandsberg, L. F., Ciofu, Oana, Kirkby, N., Christiansen, L. E., Poulsen, Henrik Enghusen, Høiby, Niels, Mandsberg, L. F., Ciofu, O., Kirkby, N., Christiansen, L. E., Poulsen, Henrik Enghusen & Høiby, N., 1 Jun 2009, In: Antimicrobial Agents and Chemotherapy. 53, 6, p. 2483-91 9 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    58. Published

      Augmented effect of early antibiotic treatment in mice with experimental lung infections due to sequentially adapted mucoid strains of Pseudomonas aeruginosa

      van Gennip, M., Moser, C., Hultqvist, Louise Dahl, Bjarnsholt, Thomas, Calum, H., Jensen, Peter Østrup, Christophersen, L., Hougen, H. P., Ciofu, Oana, Molin, S., Givskov, Michael & Høiby, Niels, 1 Dec 2009, In: Journal of Antimicrobial Chemotherapy. 64, 6, p. 1241-50 10 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    59. 2010
    60. Published

      Antibiotic resistance of bacterial biofilms

      Høiby, Niels, Bjarnsholt, Thomas, Givskov, Michael, Molin, S. & Ciofu, Oana, 2010, In: International Journal of Antimicrobial Agents. 35, 4, p. 322-332 11 p.

      Research output: Contribution to journal › Review › Research › peer-review

    61. Published

      Antibiotic tolerance and resistance in biofilms.

      Ciofu, Oana & Tolker-Nielsen, Tim, 2010, Biofilm Infections. Bjarnsholt, T., Moser, C., Jensen, P. Ø. & Høiby, N. (eds.). New York, USA: Springer Publishing Company, p. 215-230 16 p.

      Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

    62. Published

      Genetic adaptation of Pseudomonas aeruginosa during chronic lung infection of patients with cystic fibrosis: strong and weak mutators with heterogeneous genetic backgrounds emerge in mucA and/or lasR mutants

      Ciofu, Oana, Mandsberg, L. F., Bjarnsholt, Thomas, Wassermann, T. & Høiby, Niels, 2010, In: Microbiology. 156, p. 1108-1119 12 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    63. Published

      Polymorphonuclear leucocytes consume oxygen in sputum from chronic Pseudomonas aeruginosa pneumonia in cystic fibrosis

      Kolpen, Mette, Hansen, C. R., Bjarnsholt, Thomas, Moser, C., Hultqvist, Louise Dahl, van Gennip, M., Ciofu, Oana, Mandsberg, L., Kharazmi, A., Döring, G., Givskov, Michael, Høiby, Niels & Jensen, Peter Østrup, 1 Jan 2010, In: Thorax. 65, 1, p. 57-62 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    64. Published

      Quorum sensing and virulence of Pseudomonas aeruginosa during lung infection of cystic fibrosis patients

      Bjarnsholt, Thomas, Jensen, Peter Østrup, Jakobsen, Tim Holm, Phipps, R., Nielsen, A. K., Rybtke, Morten Levin, Tolker-Nielsen, Tim, Givskov, Michael, Høiby, Niels, Ciofu, Oana & Scandinavian Cystic Fibrosis Study Consortium, S. C. F. S. C., 1 Jan 2010, In: PLoS ONE. 5, 4, p. e10115

      Research output: Contribution to journal › Journal article › Research › peer-review

    65. Published

      Cellular responses of A549 alveolar epithelial cells to serially collected Pseudomonas aeruginosa from cystic fibrosis patients at different stages of pulmonary infection

      Hawdon, N. A., Aval, P. S., Barnes, R. J., Gravelle, S. K., Rosengren, J., Khan, S., Ciofu, Oana, Johansen, Helle Krogh, Høiby, Niels & Ulanova, M., 1 Jul 2010, In: FEMS Immunology and Medical Microbiology. 59, 2, p. 207-20 14 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

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