John Elmerdahl Olsen

John Elmerdahl Olsen

Professor

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    ORCID: 0000-0001-6225-6587

    Publication year:
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    1. 2013
    2. Published

      Polyamines are required for virulence and expression of virulence loci in Salmonella Typhimurium

      Jelsbak, L., Thomsen, Line Elnif, Lemire, S. & Olsen, John Elmerdahl, Jul 2013. 1 p.

      Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

    3. Published

      Identification of redundant metabolic pathways essential for virulence of Salmonella Typhimurium: Abstract book I3S International Symposium Salmonella and Salmonellosis, Saint-Malo, France

      Jelsbak, L., Hartman, H., Jensen, P. R., Poolman, M. & Olsen, John Elmerdahl, 27 May 2013. 1 p.

      Research output: Contribution to conference › Conference abstract for conference › Research

    4. Published

      Salmonella source attribution based on microbial subtyping

      Barco, L., Barrucci, F., Olsen, John Elmerdahl & Ricci, A., 2013, In: International Journal of Food Microbiology. 163, 2-3, p. 193-203 11 p.

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

    5. Published

      ClpP deletion causes attenuation of Salmonella Typhimurium virulence through mis-regulation of RpoS and indirect control of CsrA and the SPI genes

      Knudsen, G. M., Olsen, John Elmerdahl, Aabo, S., Barrow, P., Rychlik, I. & Thomsen, Line Elnif, 2013, In: Microbiology. 159, 7, p. 1497-1509 13 p.

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

    6. Published

      Colonization resistance and immunological differences in response to an experimental Salmonella infection between two chicken lines selectively bred for high or low concentration of mannonse-binding lectin: SSI13-2018

      Ulrich-Lynge, S. L., Sørensen Dalgaard, T., Norup, L. R., Olsen, John Elmerdahl & Juul-Madsen, H. R., 2013, Scandinavian Journal of Immunology: SSI 2013 Abstract Submission and Innate Immunity. Vol. 77. p. 274-274

      Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

    7. Published

      Comparative study of PCR methods to detect Pasteurella multocida

      Adhikary, S., Bisgaard, M., Foster, G., Kiessling, N., Fahlen, A. R., Olsen, John Elmerdahl & Christensen, Henrik, 2013, In: Berliner und Muenchener Tieraerztliche Wochenschrift. 126, 9/10, p. 415-422 8 p.

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

    8. Published

      Comparison of heat stress responses of immobilized and planktonic Salmonella enterica serovar Typhimurium

      Nielsen, M., Knudsen, G. M., Danino-Appleton, V., Olsen, John Elmerdahl & Thomsen, Line Elnif, 2013, In: Food Microbiology. 33, 2, p. 221-227 7 p.

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

    9. Published

      Factor H binds to the hypervariable region of many Streptococcus pyogenes M proteins but does not promote phagocytosis resistance or acute virulence

      Gustafsson, C. U. M., Lannergård, J., Nilsson, O. R., Kristensen, B. M., Olsen, John Elmerdahl, Harris, C. L., Ufret-Vincenty, R. L., Stålhammar-Carlemalm, M. & Lindahl, C. G., 2013, In: P L o S Pathogens. 9, 4, p. e1003323 17 p.

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

    10. Published

      Importance of the producer on retail broiler meat product contamination with Campylobacter spp

      Kudirkiene, E., Buneviciene, J., Serniene, L., Ramonaite, S., Olsen, John Elmerdahl & Malakauskas, M., 2013, In: Journal of the Science of Food and Agriculture. 93, 9, p. 2293-2298 6 p.

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

    11. Published

      Intestinal invasion of Salmonella enterica serovar Typhimurium in the avian host is dose dependent and does not depend on motility and chemotaxis

      Olsen, John Elmerdahl, Hoegh-Andersen, K. H., Rosenkrantz, J. T., Schroll, C., Casadesús, J., Aabo, S. & Christensen, Jens Peter, 2013, In: Veterinary Microbiology. 165, 3-4, p. 373-377 5 p.

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

    12. Published

      Non-essential genes form the hubs of genome scale protein function and environmental gene expression networks in Salmonella enterica serovar Typhimurium

      Rosenkrantz, J. T., Aarts, H., Abee, T., Rolfe, M. D., Knudsen, G. M., Nielsen, M., Thomsen, Line Elnif, Zwietering, M. H., Olsen, John Elmerdahl & Pin, C., 2013, In: B M C Microbiology. 13, 16 p., 294.

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

    13. Published

      The putative thiosulfate sulfurtransferases PspE and GlpE contribute to virulence of Salmonella Typhimurium in the mouse model of systemic disease.

      Wallrodt, I., Jelsbak, L., Thorndahl, L., Thomsen, Line Elnif, Lemire, S. & Olsen, John Elmerdahl, 2013, In: P L o S One. 8, 8, 9 p., e70829.

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

    14. Published

      The role of Serpine-1 and Tissue inhibitor of metalloproteinase type-1 in early host responses to Staphylococcus aureus intracutaneous infection of mice

      Harslund, J. L. F., Frees, Dorte, Leifsson, Páll S., Offenberg, H. K., Rømer, M. U. K., Brünner, N. & Olsen, John Elmerdahl, 2013, In: Pathogens and Disease. 68, 3, p. 96-104 9 p.

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

    15. Published

      The role of flagella and chemotaxis genes in host pathogen interaction of the host adapted Salmonella enterica serovar Dublin compared to the broad host range serovar S. Typhimurium

      Olsen, John Elmerdahl, Hoegh-Andersen, K. H., Casadesús, J., Rosenkrantz, J. T., Chadfield, M. S. & Thomsen, Line Elnif, 2013, In: B M C Microbiology. 13, 11 p., 67.

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

    16. 2012
    17. Published

      Molecular-epidemiological investigation of Salmonella enterica serovar Tennessee (S. Tennessee) isolated from long egg production facility

      Jakociune, D., Bisgaard, M., Pedersen, K. & Olsen, John Elmerdahl, 5 Oct 2012. 1 p.

      Research output: Contribution to conference › Conference abstract for conference › Research

    18. Published

      Awareness of human health risks associated with the use of antibiotics among livestock keepers and factors that contribute to selection of antibiotic resistance bacteria within livestock in Tanzania

      Katakweba, A. A. S., Mtambo, M. M. A., Olsen, John Elmerdahl & Muhairwa, A. P., Oct 2012, In: Livestock Research for Rural Development. 24, 10

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

    19. Published

      Molecular-epidemiological investigation of Salmonella enterica serovar Tennessee (S. Tennessee) isolated from a suspected case of persistent contamination of a long egg production facility

      Jakociune, D., Bisgaard, M., Pedersen, K. & Olsen, John Elmerdahl, 4 Sep 2012. 1 p.

      Research output: Contribution to conference › Conference abstract for conference › Research

    20. Published

      No evidence of biocide resistance in Danish Salmonella isolates from pig slaughterhouses

      Gantzhorn, M. R., Pedersen, K., Olsen, John Elmerdahl & Thomsen, Line Elnif, 4 Sep 2012.

      Research output: Contribution to conference › Poster › Research

    21. Published

      A new real-time PCR method for the identification of Salmonella Dublin

      Persson, S., Jacobsen, T., Olsen, John Elmerdahl, Olsen, K. E. P. & Hansen, F., 2012, In: Journal of Applied Microbiology. 113, 3, p. 615-621 7 p.

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

    22. Published

      A third mode of surface-associated growth: immobilization of Salmonella enterica serovar Typhimurium modulates the RpoS-directed transcriptional programme

      Knudsen, G. M., Nielsen, M., Grassby, T., Danino-Appleton, V., Thomsen, Line Elnif, Colquhoun, I. J., Brocklehurst, T. F., Olsen, John Elmerdahl & Hinton, J. C. D., 2012, In: Environmental Microbiology. 14, 8, p. 1855-1875 21 p.

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

    23. Published

      Adaptation of Salmonella Typhimurium to triclosan

      Gantzhorn, M. R., Olsen, John Elmerdahl & Thomsen, Line Elnif, 2012.

      Research output: Contribution to conference › Poster › Research

    24. Published

      Application of the Random Forest method to analyse epidemiological and phenotypic characteristics of Salmonella 4,[5],12:i:- and Salmonella Typhimurium strains

      Barco, L., Mancin, M., Ruffa, M., Saccardin, C., Minorello, C., Zavagnin, P., Lettini, A. A., Olsen, John Elmerdahl & Ricci, A., 2012, In: Zoonoses and Public Health. 59, 7, p. 505-512 8 p.

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

    25. Published

      Awareness of human health risks associated with the use of antibiotics among livestock keepers and factors that contribute to selection of antibiotic resistant bacteria within livestock in Tanzania

      Katakweba, A. A. S., Mtambo, M. M. A., Olsen, John Elmerdahl & Muhairwa, A. P., 2012, In: Livestock Research for Rural Development (Online Edition). 24, 10, 10 p., 170.

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

    26. Published

      Current manure management practices and hygiene aspects of urban and peri-urban livestock farming in Tanzania

      Lupindu, A. M., Ngowi, H. A., Dalsgaard, Anders, Olsen, John Elmerdahl & Msoffe, P. L. M., 2012, In: Livestock Research for Rural Development (Online Edition). 24, 9, 11 p., 167.

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

    27. Published

      Mustelidae are natural hosts of Staphylococcus delphini group A

      Guardabassi, Luca, Schmidt, K. R., Petersen, T. S., Espinosa-Gongora, C., Moodley, Arshnee, Agersø, Y. & Olsen, John Elmerdahl, 2012, In: Veterinary Microbiology. 159, 3-4, p. 351-353 3 p.

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

    28. Published

      Persistence of vancomycin-resistant Enterococcus faecium in Danish poultry 15 years after the ban of avoparcin

      Bortolaia, V., Mander, M., Jensen, L. B., Olsen, John Elmerdahl & Guardabassi, Luca, 2012, Book of abtracts: The 4th Central European Symposium on Antimicrobials and Antimicrobial Resistance, CESAR 2012: 23-26 September 2012 - Primošten, Croatia. p. 50 1 p.

      Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research › peer-review

    29. Published

      Polyamines are required for virulence in Salmonella enterica serovar Typhimurium

      Jelsbak, L., Thomsen, Line Elnif, Wallrodt, I., Jensen, P. R. & Olsen, John Elmerdahl, 2012, In: PLoS ONE. 7, 4, 10 p.

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

    30. Published

      The binding ability of purified chicken Mannose-Binding Lectin (cMBL) to Salmonella enterica serotype B, C1 and D: AIRG 2012- Scientific program and abstracts, pp 62-62

      Ulrich-Lynge, S. L., Sørensen Dalgaard, T., Norup, L. R., Olsen, John Elmerdahl & Juul-Madsen, H. R., 2012. 1 p.

      Research output: Contribution to conference › Conference abstract for conference › Research

    31. Published

      The effect of supplementation on the performance of free range local chickens in Tanzania

      Mutayoba, S. K., Katule, A. K. .., Minga, U., Mtambo, M. M. .. & Olsen, John Elmerdahl, 2012, In: Livestock Research for Rural Development (Online Edition). 24, 5, 13 p., 93.

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

    32. Published

      The importance of motility and chemotaxis for extra-animal survival of Salmonella enterica serovar Typhimuirum and Dublin

      Olsen, John Elmerdahl, Høgh-Andersen, K. H., Casadesús, J. & Thomsen, Line Elnif, 2012, In: Journal of Applied Microbiology. 113, 3, p. 560-568 9 p.

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

    33. Published

      The transcriptional heat shock response of Salmonella Typhimurium shows hysteresis and heated cells show increased resistance to heat and acid stress

      Pin, C., Hansen, T., Munoz-Cuevas, M., de Jonge, R., Rosenkrantz, J. T., Löfström, C., Aarts, H. & Olsen, John Elmerdahl, 2012, In: P L o S One. 7, 12, 10 p.

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

    34. 2011
    35. Published

      Change in attachment of Salmonella typhimurium, Yersinia enterocolitica and Listeria monocytogenes to pork skin and muscle after hot water and lactic acid decontamination

      Morild, R. K., Olsen, John Elmerdahl & Aabo, S., 2011, In: International Journal of Food Microbiology. 145, 1, p. 353-358 6 p.

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

    36. Published

      Demonstration of antibiotic resistance genes strA, blaTEM, tetA, tetC and sul2 in Avibacterium paragallinarum

      Byarugaba, D. K., Minga, U. M., Gwakisa, P. S., Katunguka-Rwakishaya, E., Bisgaard, M., Christensen, Henrik & Olsen, John Elmerdahl, 2011, In: African Journal of Microbiology Research. 5, 22, p. 3624-3627 4 p.

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

    37. Published

      Evidence of broiler meat contamination with post-disinfection strains of Campylobacter jejuni from slaughterhouse

      Kudirkené, E., Buneviciené, J., Brøndsted, Lone, Ingmer, Hanne, Olsen, John Elmerdahl & Malakauskas, M., 2011, In: International Journal of Food Microbiology. 145, Suppl. 1, p. S116-S120 5 p.

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

    38. Published

      On the origin and diversity of Newcastle disease virus in Tanzania

      Yongolo, M. G., Christensen, Henrik, Handberg, K., Minga, U. & Olsen, John Elmerdahl, 2011, In: Onderstepoort Journal of Veterinary Research. 78, 1, 8 p.

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

    39. Published

      Seasonal variation in nutritive value of scavenged feed and effect of supplementation on performance of rural birds

      Mutayoba, S. K., Katule, A. K., Minga, U., Mtambo, M. M. & Olsen, John Elmerdahl, 2011, In: Agriculture and Biology Journal of North America. 2, 9, p. 1310-1316 7 p.

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

    40. Published

      Selection of CMY-2 producing Escherichia coli in the faecal flora of dogs treated with cephalexin

      Damborg, Peter Panduro, Gaustad, I. B., Olsen, John Elmerdahl & Guardabassi, Luca, 2011, In: Veterinary Microbiology. 151, 3-4, p. 404-408 5 p.

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

    41. Published

      Survival of Salmonella on cuts of beef carcasses subjected to dry aging

      Knudsen, G. M., Sommer, H. M., Sørensen, N. D., Olsen, John Elmerdahl & Aabo, S., 2011, In: Journal of Applied Microbiology. 111, 4, p. 848-854 7 p.

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

    42. Published

      Time-course investigation of infection with a low virulent Pasteurella multocida strain in normal and immune-suppressed 12-week-old free-range chickens

      Mbuthia, P. G., Njagi, L. W., Nyaga, P. N., Bebora, L. C., Minga, U., Christensen, Jens Peter & Olsen, John Elmerdahl, 2011, In: Avian Pathology. 40, 6, p. 629-637 9 p.

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

    43. 2010
    44. Published

      A hitherto not recognized phenotype of spvA in Salmonella

      Frees, Dorte, Gram, L., Holmstrøm, K. & Olsen, John Elmerdahl, 2010, Proceedings: 13S international symposium salmonella and salmonellosis. p. 33-34 2 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

    45. Published

      Demonstration of persistent strains of Campylobacter jejuni within broiler farms over a 1-year period in Lithuania

      Kudirkiene, E., Malakauskas, M., Malakauskas, A., Bojesen, Anders Miki & Olsen, John Elmerdahl, 2010, In: Journal of Applied Microbiology. 108, 3, p. 868-877 10 p.

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

    46. Published

      Detection and quantification of Salmonella in pasteurized egg products by real-time PCR

      Jakociune, D., Löfström, C., Hoorfar, J. & Olsen, John Elmerdahl, 2010, Proceedings: 13S international symposium salmonella and salmonellosis. p. 97-98 2 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

    47. Published

      Development of a PCR method for verification of Salmonella Dublin

      Hansen, F., Jacobsen, T., Persson, S., Olsen, John Elmerdahl & Mansdal, S., 2010, 22nd International ICFMH Symposium Food Micro 2010. p. 185 1 p. PEC1.67

      Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

    48. Published

      Immobilisation alters the heat shock response of Salmonella typhimurium

      Nielsen, M., Knudsen, G. M., Danino-Appelton, V., Hinton, J. C., Brocklehurst, T., Olsen, John Elmerdahl & Thomsen, Line Elnif, 2010. 1 p.

      Research output: Contribution to conference › Poster › Research

    49. Published

      Impact of immobilisation on virulence of Salmonella typhimurium

      Thomsen, Line Elnif, Nielsen, M., Knudsen, G., Danino-Appleton, V., Hinton, J., Brocklehurst, T. & Olsen, John Elmerdahl, 2010. 1 p.

      Research output: Contribution to conference › Conference abstract for conference › Research

    50. Published

      Modelling gene expression in Salmonella using microarray hybridization under conditions relevant to the pork chain

      Pin, C., Hoorfar, J., Olsen, John Elmerdahl, Aarts, H., Nielsen, M. & Knudsen, G., 2010, 22nd International ICFMH Symposium Food Micro 2010: Final Programme et Abstract Book. p. 50 (PSC1.04) 1 p.

      Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

    51. Published

      Polyamine biosynthesis is essential for macrophage cytotoxicity of Salmonella typhimurium

      Jelsbak, L., Thomsen, Line Elnif & Olsen, John Elmerdahl, 2010. 1 p.

      Research output: Contribution to conference › Conference abstract for conference › Research

    52. Published

      Rapid quantification of viable Campylobacter bacteria on chicken carcasses, using real-time PCR and propidium monoazide treatment, as a tool for quantitative risk assessment

      Josefsen, M. H., Löfström, C., Hansen, T. B., Christensen, L. S., Olsen, John Elmerdahl & Hoorfar, J., 2010, In: Applied and Environmental Microbiology. 76, 15, p. 5097-5104 8 p.

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

    53. Published

      Rapid quantification of viable Campylobacter on chicken carcasses by real-time PCR and propidium monoazide as a tool for quantitative risk assessment

      Josefsen, M. H., Löfström, C., Hansen, T. B., Christensen, L. S., Olsen, John Elmerdahl & Hoorfar, J., 2010, 22nd International ICFMH Symposium Food Micro 2010. p. 51 1 p.

      Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

    54. Published

      The role of phage-shock proteins in Salmonella Typhimurium virulence

      Schmidt, I., Thomsen, Line Elnif, Jelsbak, L. & Olsen, John Elmerdahl, 2010. 1 p.

      Research output: Contribution to conference › Conference abstract for conference › Research

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