Ole Haagen Nielsen

Ole Haagen Nielsen

Clinical Professor

Member of:

  • Internal Medicine: Gastroenterology and Hepatology

ORCID: 0000-0003-4612-8635

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  1. Published

    Lipidomic Trajectories Characterize Delayed Mucosal Wound Healing in Quiescent Ulcerative Colitis and Identify Potential Novel Therapeutic Targets

    Bjerrum, Jakob Tveiten , Wang, Y., Zhang, J., Riis, Lene Buhl, Nielsen, Ole Haagen & Seidelin, Jakob Benedict, 2022, In: International Journal of Biological Sciences. 18, 5, p. 1813-1828 16 p.

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

  2. Published

    MAP kinases in inflammatory bowel disease

    Coskun, M., Olsen, Jørgen, Seidelin, Jakob Benedict & Nielsen, Ole Haagen, 2011, In: Clinica Chimica Acta. 412, 7-8, p. 513-20 8 p.

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

  3. Published

    Madforgiftninger

    Nielsen, Ole Haagen, Kjeldsen, H. C., Petersen, H., Johannessen, T. & Viggen, B., 2009, Lægehåndbogen - et opslagsværk til både sundhedsfaglige og borgere. Lægeforeningens Forlag

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

  4. Published

    Magnetisk resonans-kolografi: Et nyt diagnostisk værktøj

    Achiam, Michael Patrick, Chabanova, E., Løgager, V. B., Thomsen, Henrik S. & Nielsen, Ole Haagen, 7 Nov 2005, In: Ugeskrift for Laeger. 167, 45, p. 4279-4284 6 p.

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

  5. Published

    Management of Iron-Deficiency Anemia in Inflammatory Bowel Disease: A Systematic Review

    Nielsen, Ole Haagen, Ainsworth, M., Coskun, M. & Weiss, G., Jun 2015, In: Medicine (Baltimore). 94, 23, p. 1-14 14 p., e963.

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

  6. Published

    Managing vitamin D deficiency in inflammatory bowel disease

    Nielsen, Ole Haagen, Hansen, T. I., Gubatan, J. M., Jensen, Kim Bak & Rejnmark, L., 2019, In: Frontline Gastroenterology. 10, 4, p. 394-400 7 p., 31656565.

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

  7. Published

    Mechanisms behind efficacy of tumor necrosis factor inhibitors in inflammatory bowel diseases

    Olesen, C. M., Coskun, M., Peyrin-Biroulet, L. & Nielsen, Ole Haagen, Mar 2016, In: Pharmacology & Therapeutics. 159, p. 110-119 10 p.

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

  8. Published

    Mediators of inflammation in chronic inflammatory bowel disease

    Nielsen, Ole Haagen & Rask-Madsen, J., 22 Apr 1996, In: Scandinavian Journal of Gastroenterology, Supplement. 31, 216, p. 149-159 11 p.

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

  9. Published

    Mesalazin til vedligeholdelse af medikamentelt induceret remission i Crohns sygdom: gennemgang af et Cochrane-review

    Thomsen, O. Ø. & Nielsen, Ole Haagen, 15 Aug 2005, In: Ugeskrift for Laeger. 167, 33, p. 3015-7 3 p.

    Research output: Contribution to journal › Journal article › Research

  10. Published

    Metabonomics in Ulcerative Colitis: Diagnostics, Biomarker Identification, And Insight into the Pathophysiology

    Bjerrum, Jakob Tveiten , Nielsen, Ole Haagen, Hao, F., Tang, H., Nicholson, J. K., Wang, Y., Olsen, Jørgen, Bjerrum, J. T., Nielsen, Ole Haagen, Shen, H., Tang, H. R., Nicholson, J. B., Wang, L. & Olsen, J., 2010, In: Journal of Proteome Research. 9, 2, p. 954-962 9 p.

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

  11. Published

    Metabonomics in gastroenterology and hepatology

    Bjerrum, Jakob Tveiten & Nielsen, Ole Haagen, 1 Aug 2019, In: International Journal of Molecular Sciences. 20, 15, 3638.

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

  12. Published

    Metabonomics of human fecal extracts characterize ulcerative colitis, Crohn's disease and healthy individuals

    Bjerrum, Jakob Tveiten , Wang, Y., Hao, F., Coskun, M., Ludwig, C., Guenther, U. & Nielsen, Ole Haagen, 2015, In: Metabolomics. 11, 1, p. 122-133 12 p.

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

  13. Published

    Metabonomics uncovers a reversible proatherogenic lipid profile during infliximab therapy of inflammatory bowel disease

    Bjerrum, J. T., Steenholdt, C., Ainsworth, M., Nielsen, Ole Haagen, Reed, M. A. C., Atkins, K., Günther, U. L., Hao, F. & Wang, Y., 2017, In: BMC Medicine. 15, 1, 13 p., 184.

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

  14. Published

    Methotrexate for inflammatory bowel disease: time for reconsideration

    Nielsen, Ole Haagen, Ainsworth, M. A. & Steenholdt, Casper, 2019, In: Expert Review of Gastroenterology and Hepatology. 13, 5, p. 407-409 3 p.

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

  15. Published

    MicroRNAs in inflammatory bowel disease--pathogenesis, diagnostics and therapeutics

    Coskun, M., Bjerrum, J. T., Seidelin, Jakob Benedict & Nielsen, Ole Haagen, 2012, In: World Journal of Gastroenterology. 18, 34, p. 4629-34 6 p.

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

  16. Published

    Microarray-dataanalyse

    Borup, R. H. A., vlz241, vlz241, Nielsen, Ole Haagen & Nielsen, Finn Cilius, 29 May 2006, In: Ugeskrift for Laeger. 168, 22, p. 2159-2162 4 p.

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

  17. Published

    Microarrays and Crohn's disease: collecting reliable information

    vlz241, vlz241, Nielsen, Ole Haagen, Borup, R. & Nielsen, Finn Cilius, Apr 2005, In: Scandinavian Journal of Gastroenterology. 40, 4, p. 369-77 9 p.

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

  18. Published

    Microbiological evaluation of jejunal aspirates and faecal samples after oral administration of bifidobacteria and lactic acid bacteria

    Nielsen, Ole Haagen, Jørgensen, S., Pedersen, K. & Justesen, Torkild, May 1994, In: Journal of Applied Bacteriology. 76, 5, p. 469-74 6 p.

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

  19. Published

    Microscopic colitis: A missed diagnosis?

    Nielsen, Ole Haagen, Vainer, B. & Muckadell, P. O. B. S. D., 4 Dec 2004, In: The Lancet. 364, 9450, p. 2055-2057 3 p.

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

  20. Published

    Microscopic colitis: Etiopathology, diagnosis, and rational management

    Nielsen, Ole Haagen, Fernandez-Banares, F., Sato, T. & Pardi, D. S., 1 Aug 2022, In: eLife. 11, 21 p., e79397.

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

  21. Published

    Mirikizumab (Omvoh™) for ulcerative colitis

    Hammerhøj, A., Boye, T. L., Langholz, Ebbe & Nielsen, Ole Haagen, 2024, In: Trends in Pharmacological Sciences. 45, 3, p. 281-282 2 p.

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

  22. Published

    Mitogen activated protein kinases: a role in inflammatory bowel disease?

    Broom, O. J., Widjaya, B., Troelsen, J., Olsen, Jørgen & Nielsen, Ole Haagen, 2009, In: Clinical and Experimental Immunology. 158, 3, p. 272-80 8 p.

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

  23. Published

    Modulation of Gut Microbiota in Pathological States

    Wang, Y., Wang, B., Wu, J., Jiang, X., Tang, H. & Nielsen, Ole Haagen, 2017, In: Engineering. 3, 1, p. 83-89 7 p.

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

  24. Published

    Molecular Manipulations and Intestinal Stem Cell-Derived Organoids in Inflammatory Bowel Disease

    Boye, T. L., Steenholdt, Casper, Jensen, Kim Bak & Nielsen, Ole Haagen, 2022, In: Stem Cells. 40, 5, p. 447-457

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

  25. Published

    Monitoring of omeprazole treatment in gastrooesophageal reflux disease

    Hendel, J., Hendel, L., Hage, E., Hendel, J., Aggestrup, S. & Nielsen, Ole Haagen, 1 Dec 1996, In: European Journal of Gastroenterology and Hepatology. 8, 5, p. 417-420 4 p.

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

  26. Published

    Mucosal healing in ulcerative colitis: pathophysiology and pharmacology

    Seidelin, Jakob Benedict, Coskun, M. & Nielsen, Ole Haagen, 2013, In: Advances in Clinical Chemistry. 59, p. 101-23 23 p.

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

  27. Published

    Mucosal vitamin D signaling in inflammatory bowel disease

    Kellermann, L., Jensen, Kim Bak, Bergenheim, F., Gubatan, J., Chou, N. D., Moss, A. & Nielsen, Ole Haagen, 2020, In: Autoimmunity Reviews. 19, 11, 102672.

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

  28. Published

    Multiparametric and accurate functional analysis of genetic sequence variants using CRISPR-Select

    Niu, Yiyuan, Ferreira Azevedo, Catarina A, Li, Xin, Kamali, E., Nielsen, Ole Haagen, Sørensen, Claus Storgaard & Frödin, Morten, 2022, In: Nature Genetics. 54, 28 p.

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

  29. Published

    Muramyl dipeptide responsive pathways in Crohn's disease: from NOD2 and beyond

    Salem, M., Seidelin, Jakob Benedict, Rogler, G. & Nielsen, Ole Haagen, 2013, In: Cellular and Molecular Life Sciences. 70, p. 3391-3404

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

  30. Published

    New strategies for treatment of inflammatory bowel disease

    Nielsen, Ole Haagen, 2014, In: Frontiers in Medicine. 1, p. 1-5 5 p., 3.

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

  31. Published

    Non-IBD and Noninfectious Colitis

    Nielsen, Ole Haagen & Seidelin, J. B., 2012, Geriatric Gastroenterology. Pitchumoni, CS. & Dharmarajan, T. (eds.). 1 ed. p. 493-499

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

  32. Published

    Non-IBD and noninfectious colitis

    Nielsen, Ole Haagen, Vainer, B. & Rask-Madsen, J., Jan 2008, In: Nature Clinical Practice Gastroenterology & Hepatology. 5, 1, p. 28-39 12 p.

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

  33. Non-tropical sprue. Malignant diseases and mortality rate

    Nielsen, Ole Haagen, Jacobsen, O., Pedersen, E. R., Rasmussen, S. N., Petri, M., Laulund, S. & Jarnum, S., 1985, In: Scandinavian Journal of Gastroenterology. 20, 1, p. 13-18 6 p.

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

  34. Published

    Noninfectious & noninflammatory bowel disease colitis

    Nielsen, Ole Haagen, Bjerrum, Jakob Tveiten & Seidelin, Jakob Benedict, 1 Mar 2013, Advances in the Management of Inflammatory Bowel Disease. Future Medicine Ltd., p. 33-49 17 p.

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

  35. Published

    Normal cultivable microflora in upper jejunal fluid in children without gastrointestinal disorders

    Justesen, Torkild, Nielsen, Ole Haagen, Hjelt, K. & Krasilnikoff, P. A., Nov 1984, In: Journal of Pediatric Gastroenterology and Nutrition. 3, 5, p. 683-6 4 p.

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

  36. Published

    Novel targeted therapies for inflammatory bowel disease

    Coskun, M., Vermeire, S. & Nielsen, Ole Haagen, Feb 2017, In: Trends in Pharmacological Sciences. 38, 2, p. 127-142 16 p.

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

  37. Published

    Nye vejledninger i god videnskabelig praksis

    Nielsen, Ole Haagen, 2009, In: Ugeskrift for læger. 171, 22, p. 1847-9 2 p.

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

  38. Published

    Objective Quantification of Immune Cell Infiltrates and Epidermal Proliferation in Psoriatic Skin: A Comparison of Digital Image Analysis and Manual Counting

    Soendergaard, C., Nielsen, Ole Haagen, Skak, K., Røpke, M. A., Seidelin, Jakob Benedict & Kvist, P. H., 2015, In: Applied Immunohistochemistry & Molecular Morphology. p. 1-6 6 p.

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

  39. Published

    Octreotide in patients with active ulcerative colitis treated with high dose corticosteroids (OPUS 1)

    OPUS 1 study group, O. 1. S. G., Mar 2002, In: European journal of gastroenterology & hepatology. 14, 3, p. 243-8 6 p.

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

  40. Published

    Onercept for moderate-to-severe Crohn's disease: a randomized, double-blind, placebo-controlled trial

    Rutgeerts, P., Sandborn, W. J., Fedorak, R. N., Rachmilewitz, D., Tarabar, D., Gibson, P., Nielsen, Ole Haagen, Wild, G., Schreiber, S., Pena Rossi, C., Zignani, M. & Onercept Study Group, O. S. G., Jul 2006, In: Clinical Gastroenterology and Hepatology. 4, 7, p. 888-93 6 p.

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

  41. Published

    Paternal Medications in Inflammatory Bowel Disease and Male Fertility and Reproductive Outcomes: A Systematic Review and Meta-analysis

    Gubatan, J., Barber, G. E., Nielsen, Ole Haagen, Juhl, C. B., Maxwell, C., Eisenberg, M. L. & Streett, S. E., 2023, In: Clinical Gastroenterology and Hepatology. 21, 9, p. 2222-2238 17 p.

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

  42. Published

    Pathogenesis and biomarkers of carcinogenesis in ulcerative colitis

    Thorsteinsdottir, S., Gudjónsson, Thorkell, Nielsen, Ole Haagen, Vainer, B. & Seidelin, Jakob Benedict, 7 Jun 2011, In: Nature Reviews. Gastroenterology & Hepatology. 8, 7, p. 395-404 10 p.

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

  43. Pediatric tube system for collection of uncontaminated jejunal juice

    Nielsen, Ole Haagen, Hjelt, K., Krasilnikoff, P. A., Justesen, T. & Rasmussen, S. N., 1983, In: Journal of Pediatric Gastroenterology and Nutrition. 2, 3, p. 483-6 4 p.

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

  44. Published

    Perioperativ blodtransfusion og recidiv af karcinom i colon og rectum: Gennemgang af et Cochrane-review

    Bjerrum, Jakob Tveiten , Jensen, L. S. & Nielsen, Ole Haagen, 21 Aug 2006, In: Ugeskrift for Laeger. 168, 34, 1 p.

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

  45. Published

    Pharmacology and optimization of thiopurines and methotrexate in inflammatory bowel disease

    Coskun, M., Steenholdt, Casper, de Boer, N. K. & Nielsen, Ole Haagen, 2016, In: Clinical Pharmacokinetics. 55, 3, p. 257-274 18 p.

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

  46. Published

    Pitfalls of anticytokine autoantibody ELISA: False-positive results in Crohn's disease with hyperimmunoglobulinemia [13]

    Kirman, I. & Nielsen, Ole Haagen, 21 Oct 1996, In: American Journal of Gastroenterology. 91, 10, p. 2258-2259 2 p.

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

  47. Published

    Preface

    Rogler, G., Herfarth, H., Hibi, T. & Nielsen, Ole Haagen, 9 Jul 2015, Anti-Tumor Necrosis Factor Therapy in Inflammatory Bowel Disease. Karger, p. viii

    Research output: Chapter in Book/Report/Conference proceeding › Preface/postscript › Research › peer-review

  48. Published

    Pregnancy in Crohn's disease

    Nielsen, Ole Haagen, Andreasson, B., Bondesen, S., Jacobsen, O. & Jarnum, S., Sep 1984, In: Scandinavian Journal of Gastroenterology. 19, 6, p. 724-32 9 p.

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

  49. Published

    Pregnancy in crohn’s disease

    Nielsen, Ole Haagen, Andreasson, B., Bondesen, S., Jacobsen, O. & Jarnum, S., 1985, In: Obstetrical and Gynecological Survey.

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

  50. Published

    Pregnancy in ulcerative colitis

    Nielsen, Ole Haagen, Andreasson, B., Bondesen, S. & Jarnum, S., Sep 1983, In: Scandinavian Journal of Gastroenterology. 18, 6, p. 735-42 8 p.

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

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ID: 4947702