Ole Haagen Nielsen

Ole Haagen Nielsen

Clinical Professor

Member of:

  • Internal Medicine: Gastroenterology and Hepatology


  1. Published

    4-Aminosalicylic acid, in contrast to 5-aminosalicylic acid, has no effect on arachidonic acid metabolism in human neutrophils, or on the free radical 1,1-diphenyl-2-picrylhydrazyl

    Nielsen, Ole Haagen & Ahnfelt-Rønne, I., Apr 1988, In: Pharmacology & Toxicology. 62, 4, p. 223-6 4 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. 5-Aminosalicylic acid enemas in patients with active ulcerative colitis. Influence of acidity on the kinetic pattern

    Bondesen, S., Nielsen, Ole Haagen, Jacobsen, O., Rasmussen, S. N., Hansen, S. H., Halskov, S., Binder, V. & Hvidberg, E. F., 1984, In: Scandinavian Journal of Gastroenterology. 19, 5, p. 677-82 6 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. 5-Aminosalicylic acid in the treatment of Crohn's disease. A 16-week double-blind, placebo-controlled, multicentre study with Pentasa

    Rasmussen, S. N., Lauritsen, K., Tage-Jensen, U., Nielsen, Ole Haagen, Bytzer, Peter, Jacobsen, O., Ladefoged, K., Vilien, M., Binder, V. & Rask-Madsen, J., 1987, In: Scandinavian Journal of Gastroenterology. 22, 7, p. 877-83 7 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. 5-Aminosalicylic acid in the treatment of inflammatory bowel disease

    Bondesen, S., Rasmussen, S. N., Rask-Madsen, J., Nielsen, Ole Haagen, Lauritsen, K., Binder, V., Hansen, S. H. & Hvidberg, E. F., 1987, In: Acta Medica Scandinavica. 221, 3, p. 227-42 16 p.

    Research output: Contribution to journalReviewResearchpeer-review

  5. 5-amino-salicylsyre. Oversigt over en "ny" behandling af kronisk inflammatorisk tarmsygdom

    Rasmussen, S. N., Bondesen, S., Nielsen, Ole Haagen, Binder, V., Hansen, S. H. & Hvidberg, E., 1985, In: Ugeskrift for Laeger. 147, 36, p. 2811-5 5 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  6. Published

    5-aminosalicylsyre til induktion af remission eller respons ved Crohns sygdom--en gennemgang af et Cochranereview

    Bjerrum, J. T., Munck, L. K. & Nielsen, Ole Haagen, 2011, In: Ugeskrift for Laeger. 173, 35, p. 2110-3 4 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  7. Published

    A comparison of the effect of timegadine, levamisole, and D-penicillamine on human neutrophil metabolism of endogenous arachidonic acid and chemotaxis

    Nielsen, Ole Haagen, Ahnfelt-Rønne, I. & Elmgreen, J., May 1988, In: Pharmacology & Toxicology. 62, 5, p. 322-5 4 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  8. Published

    A fully defined 3D matrix for ex vivo expansion of human colonic organoids from biopsy tissue

    Bergenheim, F., Fregni, G., Buchanan, C. F., Riis, Lene Buhl, Heulot, M., Touati, J., Seidelin, Jakob Benedict, Rizzi, S. C. & Nielsen, Ole Haagen, 2020, In: Biomaterials. 262, 11 p., 120248.

    Research output: Contribution to journalJournal articleResearchpeer-review

  9. Published

    A proposal for a study on treatment selection and lifestyle recommendations in chronic inflammatory diseases: A danish multidisciplinary collaboration on prognostic factors and personalised medicine

    Andersen, V., Holmskov, U., Bek Sørensen, S., Jawhara, M., Andersen, K. W., Bygum, A., Hvid, L., Grauslund, J., Wied, J., Glerup, H., Fredberg, U., Villadsen, J. A., Kjær, S. G., Fallingborg, J., Moghadd, S. A. G. R., Knudsen, T., Brodersen, J., Frøjk, J., Dahlerup, J. F., Nielsen, O. H. & 18 others, Christensen, R., Bo Bojesen, A., Sorensen, G. L., Thiel, S., Færgeman, N. J., Brandslund, I., Stensballe, A., Schmidt, E. B., Franke, A., Ellinghaus, D., Rosenstiel, P., Raes, J., Heitmann, Berit, Boye, M., Nielsen, C. L., Werner, L., Kjeldsen, J. & Ellingsen, T., May 2017, In: Nutrients. 9, 5, 16 p., 499.

    Research output: Contribution to journalJournal articleResearchpeer-review

  10. Published

    A randomized controlled trial of the efficacy and safety of CCX282-B, an orally-administered blocker of chemokine receptor CCR9, for patients with Crohn's disease

    Keshav, S., Vaňásek, T., Niv, Y., Petryka, R., Howaldt, S., Bafutto, M., Rácz, I., Hetzel, D., Nielsen, Ole Haagen, Vermeire, S., Reinisch, W., Karlén, P., Schreiber, S., Schall, T. J. & Bekker, P., 2013, In: P L o S One. 8, 3, 12 p., e60094.

    Research output: Contribution to journalJournal articleResearchpeer-review

  11. Published

    A role for interleukin-33 in T(H)2-polarized intestinal inflammation?

    Seidelin, Jakob Benedict, Rogler, G. & Nielsen, Ole Haagen, Sep 2011, In: Mucosal Immunology. 4, 5, p. 496-502 7 p.

    Research output: Contribution to journalReviewResearchpeer-review

  12. Published

    A role for interleukin-33 in T(H)2-polarized intestinal inflammation?

    Seidelin, Jakob Benedict, Rogler, G. & Nielsen, Ole Haagen, 2011, In: Mucosal Immunology. 4, 5, p. 496-502 7 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  13. Published

    A simple filter-paper technique allows detection of mucosal cytokine levels in vivo in ulcerative colitis. Interleukin-1 and interleukin-1-receptor antagonist

    Hendel, J., Nielsen, Ole Haagen, Madsen, S. & Brynskov, J., Sep 1996, In: Digestive Diseases and Sciences. 41, 9, p. 1775-9 5 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  14. Published

    ATG16L1: A multifunctional susceptibility factor in Crohn disease

    Salem, M., Ammitzboell, M., Nys, K., Seidelin, Jakob Benedict & Nielsen, Ole Haagen, 3 Apr 2015, In: Autophagy. 11, 4, p. 585-94 10 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  15. Published

    Abdominal pain caused by Enterobius vermicularis: A case report

    Nielsen, Ole Haagen & Krasilnikoff, P. A., 1 Jan 1985, In: Current Therapeutic Research - Clinical and Experimental. 37, 4, p. 779-783 5 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  16. Published

    Abnormal metabolism of arachidonic acid in chronic inflammatory bowel disease: enhanced release of leucotriene B4 from activated neutrophils

    Nielsen, Ole Haagen, Ahnfelt-Rønne, I. & Elmgreen, J., Feb 1987, In: Gut. 28, 2, p. 181-5 5 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  17. Published

    Accelereret urinstofsyntese hos patienter med aktiv inflammatorisk tarmsygdom

    Lundsgaard, C., Hamberg, O., Thomsen, O. Ø., Nielsen, Ole Haagen & Vilstrup, H., 27 Oct 1997, In: Ugeskrift for Laeger. 159, 44, p. 6519-6522 4 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  18. Published

    Activation of neutrophil chemotaxis by leukotriene B4 and 5-hydroxyeicosatetraenoic acid in chronic inflammatory bowel disease

    Nielsen, Ole Haagen & Elmgreen, J., Oct 1987, In: Scandinavian Journal of Clinical and Laboratory Investigation. 47, 6, p. 605-11 7 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  19. Published

    Acute gastroenteritis in children attending day-care centres with special reference to rotavirus infections. I. Aetiology and epidemiologic aspects

    Hjelt, K., Paerregaard, A., Nielsen, Ole Haagen, Grauballe, P. C., Gaarslev, K., Holten-Andersen, W., Tvede, M., Orskov, F. & Krasilnikoff, P. A., Sep 1987, In: Acta Paediatrica Scandinavica. 76, 5, p. 754-62 9 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  20. Published

    Adhaesionsmolekylers betydning ved inflammatorisk tarmsygdom

    Vainer, B. & Nielsen, Ole Haagen, 1 Dec 1997, In: Ugeskrift for Laeger. 159, 24, p. 3767-3771 5 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  21. Published

    Adhesion molecules in inflammatory and neoplastic intestinal diseases

    Pedersen, G., Brynskov, J., Nielsen, Ole Haagen & Bendtzen, K., 1 Sep 1995, In: Digestive Diseases. 13, 5, p. 322-36 15 p.

    Research output: Contribution to journalReviewResearchpeer-review

  22. Published

    Adrenogenital syndrome and cystic fibrosis

    Nielsen, Ole Haagen & Haahr, J., Mar 1982, In: Acta Paediatrica Scandinavica. 71, 2, p. 339-41 3 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  23. Published

    Afskrift er uredeligt--men hvad er konsekvensen?

    Nielsen, Ole Haagen & Schroeder, T. V., 6 Nov 2006, In: Ugeskrift for Laeger. 168, 45, p. 3891

    Research output: Contribution to journalJournal articleResearchpeer-review

  24. Published

    Alcohol modulates circulating levels of interleukin-6 and monocyte chemoattractant protein-1 in chronic pancreatitis

    Pedersen, N., Larsen, Steen, Seidelin, Jakob Benedict & Nielsen, Ole Haagen, Mar 2004, In: Scandinavian Journal of Gastroenterology. 39, 3, p. 277-82 6 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  25. Published

    Alpha-1 antitrypsin and granulocyte colony-stimulating factor as serum biomarkers of disease severity in ulcerative colitis

    Soendergaard, C., Nielsen, Ole Haagen, Seidelin, Jakob Benedict, Kvist, P. H. & Bjerrum, J. T., May 2015, In: Inflammatory Bowel Diseases. 21, 5, p. 1077-88 12 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  26. Published

    Alpha-defensin DEFA1A3 gene copy number elevation in Danish Crohn's disease patients

    Jespersgaard, C., Fode, P., Dybdahl, M., Vind, Ida, Nielsen, Ole Haagen, vlz241, vlz241, Munkholm, Pia, Vainer, B., Riis, L., Elkjaer, M., Pedersen, N., Knudsen, E. & Andersen, P. S., Dec 2011, In: Digestive Diseases and Sciences. 56, 12, p. 3517-24 8 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  27. Published

    An open prospective study evaluating efficacy and safety of a new medical device for rectal application of activated carbon in the treatment of chronic, uncomplicated perianal fistulas

    Zawadzki, A., Johnson, L. B., Bohe, M., Johansson, C., Ekelund, M. & Nielsen, Ole Haagen, Apr 2017, In: International Journal of Colorectal Disease. 32, 4, p. 509-512 4 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  28. Published

    An open-labeled, randomized study comparing systemic interferon-alpha-2A and prednisolone enemas in the treatment of left-sided ulcerative colitis

    Madsen, S. M., Schlichting, P., Davidsen, B., Nielsen, Ole Haagen, Federspiel, B., Riis, P. & Munkholm, Pia, Jun 2001, In: The American Journal of Gastroenterology. 96, 6, p. 1807-15 9 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  29. Published

    Anti-TNF-α Therapy for Extraintestinal Manifestations of Inflammatory Bowel Disease

    Nielsen, Ole Haagen, Bendtzen, K. & Pedersen, J., 2015, In: Frontiers of Gastrointestinal Research. 34, p. 206-213

    Research output: Contribution to journalJournal articleResearchpeer-review

  30. Published

    Antibiotisk behandling af Clostridium difficile-associeret diare hos voksne. Gennemgang af et Cochrane-review

    Dahl, Eva Efsen, Bangsborg, Jette Marie & Nielsen, Ole Haagen, 2006, In: Ugeskrift for Laeger. 168, 17, p. 1631-4 4 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  31. Published

    Apoptose ved kronisk inflammatorisk tarmsygdom. Betydning for patogenese og behandling

    Seidelin, Jakob Benedict & Nielsen, Ole Haagen, 17 Feb 2003, In: Ugeskrift for Laeger. 165, 8, p. 790-2 3 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  32. Published

    Arachidonic acid and calcium metabolism in rnelittin stimulated neutrophils

    Nielsen, Ole Haagen, Bouchelouche, P. N. & Berild, D., 1992, In: Mediators of Inflammation. 1, 5, p. 313-7 5 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  33. Published

    Arachidonic acid metabolism in human neutrophils: lack of effect of cyclosporine A

    Nielsen, Ole Haagen, Bukhave, K., Ahnfelt-Rønne, I. & Elmgreen, J., 1986, In: International Journal of Immunopharmacology. 8, 4, p. 419-26 8 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  34. Published

    Arachidonic acid metabolism in neutrophil granulocytes obtained from synovial fluid in rheumatoid arthritis

    Langholz, Ebbe, Nielsen, Ole Haagen, Ahnfelt-Rønne, I. & Elmgreen, J., 1990, In: Scandinavian Journal of Rheumatology. 19, 6, p. 387-91 5 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  35. Published

    Are NOD2 polymorphisms linked to a specific disease endophenotype of Crohn's disease?

    Jensen, S. R., Nielsen, Ole Haagen & Brix, S., 2011, In: Inflammatory Bowel Diseases. 17, 11, p. 2392-401 10 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  36. Published

    Assessment of the validity of a multigene analysis in the diagnostics of inflammatory bowel disease

    Bjerrum, Jakob Tveiten , Nyberg, C., Olsen, Jørgen & Nielsen, Ole Haagen, May 2014, In: Journal of Internal Medicine. 275, 5, p. 484-93 10 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  37. Published

    Attenuated apoptosis response to Fas-ligand in active ulcerative colitis

    Seidelin, Jakob Benedict & Nielsen, Ole Haagen, Dec 2008, In: Inflammatory Bowel Diseases. 14, 12, p. 1623-9 7 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  38. Published

    Autoantibodies to molecular targets in neutrophils in patients with ulcerative colitis

    Brimnes, J., Nielsen, Ole Haagen, Wiik, A. & Heegaard, N. H. H., 1 Jan 1999, In: Digestive Diseases and Sciences. 44, 2, p. 415-423 9 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  39. Published

    Azathioprin og 6-mercaptopurin som vedligeholdelsesbehandling ved colitis ulcerosa: Gennemgang af Cochrane-review

    Bjerrum, Jakob Tveiten & Nielsen, Ole Haagen, 12 Oct 2007, In: Ugeskrift for Laeger. 169, 50, p. 4341-4344 4 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  40. Published

    Behandling af kollagen colitis: En analyse af et systematisk Cochrane-review

    Nielsen, Ole Haagen & Schaffalitzky De Muckadell, O. B., 11 Aug 2003, In: Ugeskrift for Laeger. 165, 33, p. 3154-3156 3 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  41. Published

    Betydningen af mikroribonukleinsyre for sygdomsudvikling

    Widjaya, B., Seidelin, Jakob Benedict, Olsen, Jørgen & Nielsen, Ole Haagen, 16 Nov 2009, In: Ugeskrift for Laeger. 171, 47, p. 3441-4 4 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  42. Published

    Biological treatment of Crohn's disease

    Nielsen, Ole Haagen, Bjerrum, J. T., Seidelin, Jakob Benedict, Nyberg, C. & Ainsworth, M., 2012, In: Digestive Diseases. 30 Suppl 3, p. 121-33 13 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  43. Published

    Biologics During Pregnancy in Women With Inflammatory Bowel Disease and Risk of Infantile Infections: A Systematic Review and Meta-Analysis

    Gubatan, J. M., Nielsen, Ole Haagen, Levitte, S., Juhl, C. B., Maxwell, C., Streett, S. E. & Habtezion, A., 2021, In: Am J Gastroenterol. 116, 2, p. 243-253

    Research output: Contribution to journalJournal articleResearchpeer-review

  44. Published

    Biologics for Inflammatory Bowel Disease and their Safety in Pregnancy: A Systematic Review and Meta-analysis

    Nielsen, Ole Haagen, Gubatan, J. M., Juhl, C. B., Streett, S. E. & Maxwell, C., 2022, In: Clinical Gastroenterology and Hepatology. 20, 1, p. 74-87.e3

    Research output: Contribution to journalJournal articleResearchpeer-review

  45. Published

    Biologiske laegemidler til behandling af immuninflammatoriske sygdomme

    Nielsen, Ole Haagen & Bendtzen, K., 9 Jun 2008, In: Ugeskrift for Laeger. 170, 24, p. 2103

    Research output: Contribution to journalJournal articleResearchpeer-review

  46. Published

    Biologiske laegemidler til behandling af immuninflammatoriske sygdomme.

    Nielsen, Ole Haagen & Bendtzen, K., 9 Jun 2008, In: Ugeskrift for Laeger. 170, 24, 1 p.

    Research output: Contribution to journalEditorialResearchpeer-review

  47. Published

    Biosimilars for management of Crohn disease

    Nielsen, Ole Haagen & Ainsworth, M. A., 2019, In: Annals of Internal Medicine. 170, 2, p. 129-130 2 p.

    Research output: Contribution to journalEditorialResearchpeer-review

  48. Published

    Blaus syndrom hos enæggede tvillinger

    Milman, N., Hansen, Alastair, Hansen, T. V. O., Byg, K. E., Nielsen, Ole Haagen, Møller, N. J. E., Hall, N. M. & Nieman, C. U., 16 Oct 2006, In: Ugeskrift for Laeger. 168, 42, p. 3631-3633 3 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  49. Published

    CARD15 single nucleotide polymorphisms 8, 12 and 13 are not increased in ethnic Danes with sarcoidosis

    Milman, N., Nielsen, Ole Haagen, Hviid, Thomas Vauvert F. & Fenger, K., 2007, In: Respiration; international review of thoracic diseases. 74, 1, p. 76-9 4 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  50. Published

    CARD15 status and familial predisposition for Crohn's disease and colonic gene expression

    vlz241, vlz241, Nielsen, Ole Haagen, Borup, R., Olsen, J., Bjerrum, Jakob Tveiten & Nielsen, Finn Cilius, 2007, In: Digestive Diseases and Sciences. 52, 8, p. 1783-1789

    Research output: Contribution to journalJournal articleResearchpeer-review

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ID: 4947702