Jens Kjeldsen

Physician, Ph.D.

  • Campusvej 55

    5230 Odense M

    Denmark

20002020
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Research Output 2000 2020

2015
250 Downloads (Pure)

Diffusion-weighted magnetic resonance imaging in ileocolonic Crohn's disease

Juel, M. A., Rafaelsen, S. R., Nathan, T. & Kjeldsen, J., 1. Feb 2015. 2 p.

Research output: Contribution to conference without publisher/journalPosterResearchpeer-review

File
Crohn Disease
Feasibility Studies
Ileum
Netherlands
Contrast Media

Fragments of Citrullinated and MMP-degraded Vimentin and MMP-degraded Type III Collagen Are Novel Serological Biomarkers to Differentiate Crohn's Disease from Ulcerative Colitis

Mortensen, J. H., Godskesen, L. E., Jensen, M. D., Van Haaften, W. T., Klinge, L. G., Olinga, P., Dijkstra, G., Kjeldsen, J., Karsdal, M. A., Bay-Jensen, A-C. & Krag, A., 18. Jul 2015, In : Journal of Crohn's and Colitis. 9, 10, p. 863 - 872

Research output: Contribution to journalJournal articleResearchpeer-review

Collagen Type III
Vimentin
Matrix Metalloproteinases
Ulcerative Colitis
Crohn Disease

Implications of Infliximab Treatment Failure and Influence of Personalized Treatment on Patient-reported Health-related Quality of Life and Productivity Outcomes in Crohn's Disease

Steenholdt, C., Brynskov, J., Thomsen, O. Ø., Munck, L. K., Christensen, L. A., Pedersen, G., Kjeldsen, J. & Ainsworth, M. A., Nov 2015, In : Journal of Crohn's and Colitis. 9, 11, p. 1032-1042

Research output: Contribution to journalJournal articleResearchpeer-review

Treatment Failure
Crohn Disease
Quality of Life
Efficiency
Inflammatory Bowel Diseases

Individualized Therapy Is a Long-Term Cost-Effective Method Compared to Dose Intensification in Crohn’s Disease Patients Failing Infliximab

Steenholdt, C., Brynskov, J., Thomsen, O., Munck, L. K., Fallingborg, J., Christensen, L. A., Pedersen, G., Kjeldsen, J., Jacobsen, B. A., Oxholm, A. S., Kjellberg, J., Bendtzen, K. & Ainsworth, M. A., 2015, In : Digestive Diseases and Sciences. 60, 9, p. 2762-2770

Research output: Contribution to journalJournal articleResearchpeer-review

Crohn Disease
Treatment Failure
Registries
Clinical Trials

In vivo and In situ Measurement and Modeling of Intra-Body Effective Complex Permittivity

S. Nadimi, E., Blanes-Vidal, V., Harslund, J. L. F., Ramezani, M. H., Kjeldsen, J., Johansen, P. M., Thiel, D. & Tarokh, V., 2015, In : Healthcare Technology Letters. 2, 6, p. 135-140

Research output: Contribution to journalJournal articleResearchpeer-review

Matrix Metalloproteinase Degraded Biglycan (BGM) and Citrullinated and MMP-degraded Vimentin (VICM) differentiates Crohn’s disease from ulcerative colitis

Mortensen, J. H., Godskesen, L. E., Jensen, M. D., Klinge, L., Kjeldsen, J., Karsdal, M. A., Bay-Jensen, A-C. & Krag, A., 1. Feb 2015, In : Journal of Crohn's and Colitis. 9, suppl. 1., p. S118-S119 1 p.

Research output: Contribution to journalConference abstract in journalResearchpeer-review

Medicinsk Kompendium: Indexredaktør

Kjeldsen, J., 2015

Research output: Book/anthology/thesis/reportCompendium/lecture notesEducation

Post-operative use of anti-TNF alpha agents in patients with Crohn's disease and risk of re-operation: a nationwide cohort study

Kjeldsen, J., Nielsen, J., Larsen, M. D., Qvist, N. & Nørgård, B. M., 2015, In : Journal of Crohn's and Colitis. 9, S1, p. S16 1 p., OP026.

Research output: Contribution to journalConference abstract in journalResearchpeer-review

Open Access

Postoperative Use of Anti-TNF-α Agents in Patients with Crohn's Disease and Risk of Reoperation-A Nationwide Cohort Study

Kjeldsen, J., Nielsen, J., Larsen, M. D., Qvist, N. & Nørgård, B. M., 8. Dec 2015, In : Inflammatory Bowel Diseases. 22, 3, p. 599–606

Research output: Contribution to journalJournal articleResearchpeer-review

Proxy
Reoperation
Crohn Disease
Cohort Studies
Confidence Intervals

Prevalence of chronic rhinosinusitis in a population of patients with gastroesophageal reflux disease

Bohnhorst, I., Jawad, S., Lange, B., Kjeldsen, J., Hansen, J. M. & Kjeldsen, A. D., 2015, In : American Journal of Rhinology & Allergy. 29, 3, p. 70-4 5 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Gastroesophageal Reflux
Population
Nose
Confidence Intervals
Quality of Life
97 Downloads (Pure)

Scintigraphic small intestinal transit time and defaecography in patients with J-pouch

Kjær, M. D., Simonsen, J. A., Hvidsten, S., Kjeldsen, J., Gerke, O. & Qvist, N., 10. Oct 2015, In : Diagnostics. 5, 4, p. 399-412

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
Defecography
Colonic Pouches
Histology
Endoscopy
Pouchitis

Use of anti-TNF-alpha agents in relation to first-time surgery for ulcerative colitis and Crohn's disease during childhood

Larsen, M. D., Kjeldsen, J., Qvist, N., Nørgård, B. M. & Nielsen, J., 2015, In : Journal of Crohn's and Colitis. 9, S1, p. S8-S9 OP014.

Research output: Contribution to journalConference abstract in journalResearchpeer-review

Open Access
2014

Adalimumab and Infliximab levels in neonates correlate with duration of treatment in pregnancy (ERA study)

Julsgaard, M., Christensen, L. A., Gibson, P. R., Fallingborg, J., Gearry, R., Walsh, A., Kjeldsen, J., Connell, W., Sparrow, M. P., Radford-Smith, G., Andrews, J. M., Connor, S. J., Lawrence, I., Wildt, S., Moore, G. T., Svenningsen, L., Rosella, O., Grosen, A. & Bell, S. J., 2014, In : Journal of Gastroenterology and Hepatology. 29, S2, p. 117-118

Research output: Contribution to journalConference abstract in journalResearchpeer-review

A rare cause of severe hepatomegaly with an improving outcome

Godskesen, L. E., Abildgaard, N., Kjeldsen, J. & Krag, A., 3. Apr 2014, In : BMJ Case Reports. 2014, 3 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Hepatomegaly
Alkaline Phosphatase
Liver Diseases
Quality of Life
Liver

Environmental factors in a population-based inception cohort of inflammatory bowel disease patients in Europe - An ECCO-EpiCom study

Burisch, J. M., Pedersen, N., Cukovic-Cavka, S., Turk, N., Kaimakliotis, I., Duricova, D., Bortlik, M., Shonová, O., Vind, I., Avnstrøm, S., Thorsgaard, N., Krabbe, S. L., Andersen, V., Dahlerup, J. F., Kjeldsen, J., Salupere, R., Olsen, J., Nielsen, K. R., Manninen, P., Collin, P. & 31 others, Katsanos, K. H., Tsianos, E. V., Ladefoged, K., Lakatos, L., Ragnarsson, G., Björnsson, E., Bailey, Y., O'Morain, C., Schwartz, D., Odes, S., Giannotta, M., Girardin, G., Kiudelis, G., Kupcinskas, L., Turcan, S., Barros, L., Magro, F., Lazar, D., Goldis, A., Nikulina, I., Belousova, E., Martinez-Ares, D., Hernandez, V. M., Almer, S., Zhulina, Y., Halfvarson, J., Arebi, N., Tsai, H. H., Sebastian, S., Lakatos, P. L. & EpiCom Group, 1. Jul 2014, In : Journal of Crohn's and Colitis. 8, 7, p. 607-616

Research output: Contribution to journalJournal articleResearchpeer-review

Inflammatory Bowel Diseases
Eastern Europe
Environmental Exposure
Population
Incidence

Expression of T-cell KV1.3 potassium channel correlates with pro-inflammatory cytokines and disease activity in ulcerative colitis

Koch Hansen, L., Møller, L. M. S., Rabjerg, M., Larsen, D., Hansen, T. P., Klinge, L., Wulff, H., Knudsen, T., Kjeldsen, J. & Köhler, R., 1. Nov 2014, In : Journal of Crohn's and Colitis. 8, 11, p. 1378–1391

Research output: Contribution to journalJournal articleResearchpeer-review

Kv1.3 Potassium Channel
Ulcerative Colitis
Interleukin-17
Messenger RNA
Mucous Membrane

Health care and patients' education in a European inflammatory bowel disease inception cohort: An ECCO-EpiCom study

Burisch, J., Vegh, Z., Pedersen, N., Cuković-Čavka, S., Turk, N., Kaimakliotis, I., Duricova, D., Bortlik, M., Shonová, O., Thorsgaard, N., Krabbe, S., Andersen, V., Dahlerup, J. F., Kjeldsen, J., Salupere, R., Olsen, J., Nielsen, K. R., Manninen, P., Collin, P., Katsanos, K. H. & 31 others, Tsianos, E. V., Ladefoged, K., Ragnarsson, G., Björnsson, E., Bailey, Y., O'Morain, C., Schwartz, D., Odes, S., Politi, P., Santini, A., Kiudelis, G., Kupcinskas, L., Turcan, S., Magro, F., Barros, L., Lazar, D., Goldis, A., Nikulina, I., Belousova, E., Sanromán, L., Martinez-Ares, D., Almer, S., Zhulina, Y., Halfvarson, J., Arebi, N., Houston, Y., Sebastian, S., Langholz, E., Lakatos, P. L., Munkholm, P. & EpiCom Group, 1. Aug 2014, In : Journal of Crohn's and Colitis. 8, 8, p. 811-818

Research output: Contribution to journalJournal articleResearchpeer-review

Patient Education
Inflammatory Bowel Diseases
Eastern Europe
Delivery of Health Care
Quality of Health Care

Health-related quality of life improves during one year of medical and surgical treatment in a European population-based inception cohort of patients with Inflammatory Bowel Disease: An ECCO-EpiCom study

Burisch, J., Weimers, P., Pedersen, N., Cukovic-Cavka, S., Vucelic, B., Kaimakliotis, I., Duricova, D., Bortlik, M., Shonová, O., Vind, I., Avnstrøm, S., Thorsgaard, N., Krabbe, S., Andersen, V., Dahlerup, J. F., Kjeldsen, J., Salupere, R., Olsen, J., Nielsen, K. R., Manninen, P. & 31 others, Collin, P., Katsanos, K. H., Tsianos, E. V., Ladefoged, K., Lakatos, L., Ragnarsson, G., Björnsson, E., Bailey, Y., O'Morain, C., Schwartz, D., Odes, S., Valpiani, D., Boni, M. C., Jonaitis, L., Kupcinskas, L., Turcan, S., Barros, L., Magro, F., Lazar, D., Goldis, A., Nikulina, I., Belousova, E., Fernandez, A., Sanroman, L., Almer, S., Zhulina, Y., Halfvarson, J., Arebi, N., Diggory, T., Sebastian, S. & EpiCom Group, 20. Feb 2014, In : Journal of Crohn's and Colitis. 8, 9, p. 1030–1042

Research output: Contribution to journalJournal articleResearchpeer-review

Inflammatory Bowel Diseases
Quality of Life
Population
Ulcerative Colitis
Crohn Disease

High sensitivity of quick view capsule endoscopy for detection of small bowel Crohn's disease

Halling, M. L., Nathan, T., Kjeldsen, J. & Jensen, M. D., 2014, In : Journal of Gastroenterology and Hepatology. 29, 5, p. 992-996

Research output: Contribution to journalJournal articleResearchpeer-review

Capsule Endoscopy
Crohn Disease

Increased extracellular matrix proteins turn-over in patients with Crohn's disease

Godskesen, L. E., Jensen, M. D., Klinge, L., Mortensen, JH., Karsdal, M. A., Jensen, A-C. B., Krag, A. & Kjeldsen, J., 2014.

Research output: Contribution to conference without publisher/journalConference abstract for conferenceResearch

Individualised therapy is more cost-effective than dose intensification in patients with Crohn's disease who lose response to anti-TNF treatment: a randomised, controlled trial

Steenholdt, C., Brynskov, J., Thomsen, O. Ø., Munck, L. K., Fallingborg, J., Christensen, L. A., Pedersen, G., Kjeldsen, J., Jacobsen, B. A., Oxholm, A. S., Kjellberg, J., Bendtzen, K. & Ainsworth, M. A., 2014, In : Gut. 63, 6, p. 919-927

Research output: Contribution to journalJournal articleResearchpeer-review

Crohn Disease
Randomized Controlled Trials
Single-Blind Method
Health Care Sector
Multicenter Studies

Initial Disease Course and Treatment in an Inflammatory Bowel Disease Inception Cohort in Europe: The ECCO-EpiCom Cohort

Burisch, J. M., Pedersen, E. N. G., Cukovic-Cavka, S., Turk, N., Kaimakliotis, I., Duricova, D., Shonová, O., Vind, I., Avnstrøm, S., Thorsgaard, N., Krabbe, S., Andersen, V., Dahlerup Jens, F., Kjeldsen, J., Salupere, R., Olsen, J., Nielsen, K. R., Manninen, P., Collin, P., Katsanos, K. H. & 29 others, Tsianos, E. V., Ladefoged, K. D., Lakatos, L., Bailey, Y., O'Morain, C., Schwartz, D., Odes, S., Martinato, M., Lombardini, S., Jonaitis, L., Kupcinskas, L., Turcan, S., Barros, L., Magro, F., Lazar, D., Goldis, A., Nikulina, I., Belousova, E., Fernandez, A., Hernandez, V., Almer, S., Zhulina, Y., Halfvarson, J., Tsai, H-H., Sebastian, S., Lakatos, P. L., Langholz, E., Munkholm, P. & EpiCom Group, 1. Jan 2014, In : Inflammatory Bowel Diseases. 20, 1, p. 36-46

Research output: Contribution to journalJournal articleResearchpeer-review

Inflammatory Bowel Diseases
Population

Sexual Function and Body Image are Similar after Laparoscopy-Assisted and Open Ileal Pouch-Anal Anastomosis

Kjaer, M. D., Laursen, S. B., Qvist, N., Kjeldsen, J. & Poornoroozy, P. H., Sep 2014, In : World Journal of Surgery. 38, 9, p. 2460-5 6 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Colonic Pouches
Inflammatory Bowel Diseases
Quality of Life
Ulcerative Colitis
Surveys and Questionnaires

Specific fragments of extracellular matrix proteins reflect disease activity in ulcerative colitis

Godskesen, L. E., Mortensen, J. H., Klinge, L., Jensen, M. D., Krag, A., Karsdal, M. A., Kjeldsen, J. & Jensen, A-C. B., 2014. 1 p.

Research output: Contribution to conference without publisher/journalPosterResearchpeer-review

Specific fragments of extracellular matrix proteins reflect disease activity in ulcerative colitis

Godskesen, L. E., Mortensen, J. H., Klinge, L., Jensen, M. D., Krag, A., Karsdal, M. A., Kjeldsen, J. & Jensen, A-C. B., May 2014, In : Gastroenterology. 146, 5 (Supplement 1), p. S-237 1 p., Sa1230.

Research output: Contribution to journalConference abstract in journalResearchpeer-review

The incidence of ulcerative colitis (1995-2011) and Crohn's disease (1995-2012) - Based on nationwide Danish registry data

Nørgård, B. M., Nielsen, J., Fonager, K., Kjeldsen, J., Jacobsen, B. A. & Qvist, N., 1. Oct 2014, In : Journal of Crohn's and Colitis. 8, 10, p. 1274-80

Research output: Contribution to journalJournal articleResearchpeer-review

Ulcerative Colitis
Crohn Disease
Registries
Incidence
North America
2013

94 Treatment of Secondary Infliximab Failure in Crohn's Disease Based on Serum Levels of Infliximab and Antibodies Against Infliximab: The Danish Study of Optimizing Infliximab Therapy in Crohn's Disease (Do It Crohn) Randomized Clinical Trial

Steenholdt, C., Brynskov, J., Thomsen, O., Munck, L. K., Fallingborg, J., Christensen, L. A., Pedersen, G., Kjeldsen, J., Jacobsen, B. A., Oxholm, A. S., Kjellberg, J., Bendtzen, K. & Ainsworth, M. A., 2013, In : Gastroenterology. 144, 5, Supplement 1, p. S-22

Research output: Contribution to journalJournal articleResearchpeer-review

Irritable Bowel Syndrome
Quality of Life
Primary Health Care
Guidelines
Sigmoidoscopy

Biologic therapy in inflammatory bowel disease

Theede, K., Dahlerup, J. F., Fallingborg, J., Hvas, C. L., Kjeldsen, J., Munck, L. K. & Nordgaard-Lassen, I., 2013, In : Danish Medical Journal. 60, 6, B4652.

Research output: Contribution to journalJournal articleResearchpeer-review

Inflammatory Bowel Diseases
Immunosuppressive Agents
Ulcerative Colitis
Crohn Disease

High expression level of the T cell potassium channel, KV1.3, is a novel diagnostic marker of inflammatory activity in patients with ulcerative colitis

Hansen, L. K., Larsen, D., Knudsen, T., Kjeldsen, J. & Köhler, R., 16. Feb 2013.

Research output: Contribution to conference without publisher/journalPosterCommunication

Letter: number of treatments with anti-TNF-α and reoperations in inflammatory bowel disease

Nørgård, B. M., Nielsen, J., Kjeldsen, J. & Qvist, N., 2013, In : Alimentary Pharmacology and Therapeutics. 37, 10, p. 1028-1029

Research output: Contribution to journalComment/debateResearchpeer-review

171 Downloads (Pure)
Open Access
File
Irritable Bowel Syndrome
Probiotics
Primary Health Care
Placebos
Quality of Life

Patients Suspected of Irritable Bowel Syndrome-Cross-Sectional Study Exploring the Sensitivity of Rome III Criteria in Primary Care

Engsbro, A. L., Begtrup, L. M., Kjeldsen, J., Larsen, P. V., de Muckadell, O. S., Jarbøl, D. E. & Bytzer, P., Jun 2013, In : American Journal of Gastroenterology. 108, 6, p. 972-80

Research output: Contribution to journalJournal articleResearchpeer-review

Irritable Bowel Syndrome
Primary Health Care
Cross-Sectional Studies
General Practitioners
Guidelines
Crohn Disease
Cohort Studies
Reoperation
Registries
Odds Ratio

Scintigrapfic evaluation of pouch function in patients with ulcerative colitis

Kjær, M. D., Hvidsten, S., Simonsen, J. A., Kjeldsen, J. & Qvist, N., 14. Nov 2013. 1 p.

Research output: Contribution to conference without publisher/journalPosterResearch

Scintigraphic evaluation of pouch function in patients with ulcerative colitis

Kjær, M. D., Simonsen, J. A., Hvidsten, S., Kjeldsen, J. & Qvist, N., 4. Dec 2013.

Research output: Contribution to conference without publisher/journalPosterResearch

T cell KV1.3 channel expression level in biopsies from patients with active ulcerative colitis is higher in patients treated with immunosuppressants and 5-ASA vs. 5-ASA alone

Hansen, L. K., Larsen, D., Knudsen, T., Kjeldsen, J. & Köhler, R., 16. Feb 2013.

Research output: Contribution to conference without publisher/journalPosterCommunication

2012

Guidelines for screening, prophylaxis and critical information prior to initiating anti-TNF-alpha treatment

Nordgaard-Lassen, I., Dahlerup, J. F., Belard, E., Gerstoft, J., Kjeldsen, J., Kragballe, K., Ravn, P., Sørensen, I. J., Theede, K. & Tjellesen, L., 2012, In : Danish Medical Journal. 59, 7, p. C4480

Research output: Contribution to journalJournal articleResearchpeer-review

Tumor Necrosis Factor-alpha
Human Herpesvirus 3
Guidelines
Gastroenterology
Virus Diseases

Ileoscopy reduces the need for small bowel imaging in suspected Crohn's disease

Jensen, M. D., Nathan, T., Rafaelsen, S. R. & Kjeldsen, J., 2012, In : Danish Medical Journal. 59, 9, p. A4491

Research output: Contribution to journalJournal articleResearchpeer-review

Capsule Endoscopy
Crohn Disease
Guidelines
Ulcerative Colitis
Cohort Studies
Tumor Necrosis Factor-alpha
2011

Diagnostic accuracies of MR enterography and CT enterography in symptomatic Crohn's disease

Jensen, M. D., Kjeldsen, J., Rafaelsen, S. R. & Nathan, T., 2011, In : Scandinavian Journal of Gastroenterology. 46, 12, p. 1449-1457 9 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Crohn Disease
Pathologic Constriction
Ileum
Preexisting Condition Coverage
Jejunum

Diagnostic accuracy of capsule endoscopy for small bowel Crohn's disease is superior to that of MR enterography or CT enterography

Jensen, M. D., Nathan, T., Rafaelsen, S. R. & Kjeldsen, J., Feb 2011, In : Clinical Gastroenterology and Hepatology. 9, 2, p. 124-9 6 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Capsule Endoscopy
Crohn Disease

Fecal calprotectin is equally sensitive in Crohn's disease affecting the small bowel and colon

Jensen, M. D., Kjeldsen, J. & Nathan, T., 2011, In : Scandinavian Journal of Gastroenterology. 46, 6, p. 694-700

Research output: Contribution to journalJournal articleResearchpeer-review

Crohn Disease
Colon

Fecal calprotectin is equally sensitive in isolated colonic and small bowel Crohn's disease

Jensen, M. D., Kjeldsen, J. & Nathan, T., 2011.

Research output: Contribution to conference without publisher/journalPosterResearch

Fecal calprotectin is equally sensitive in isolated colonic and small bowel Crohn’s disease

Jensen, M. D., Kjeldsen, J. & Nathan, T., 2011, In : Gastroenterology. 140, 5 Suppl. 1, p. S690

Research output: Contribution to journalConference abstract in journalResearch

Increased expression of T-cell KV1.3 and KCa3.1 channels in the inflamed intestinal wall from patients with active ulcerative colitis

Hansen, L. K., Larsen, D., Sadda, V., Nielsen, G., Klinge, L., Schaffalitzky de Muckadell, O. B., Knudsen, T., Kjeldsen, J. & Köhler, R., 22. Oct 2011. 1 p.

Research output: Contribution to conference without publisher/journalPosterResearch

Ulcerative Colitis
Colitis
Mucous Membrane
Intestinal Mucosa
Cell Movement

Low sensitivity of MR- and CT-enterography for detection of small bowel stenosis in patients with known Crohn’s disease

Jensen, M. D., Kjeldsen, J., Rafaelsen, S. R. & Nathan, T., 2011, In : Gastroenterology. 140, 5, Suppl 1, p. S759-760

Research output: Contribution to journalConference abstract in journalResearch

Low sensitivity of MR- and CT-enterography for detection of small bowel stenosis in patients with known Crohn’s disease

Jensen, M. D., Kjeldsen, J., Rafaelsen, S. R. & Nathan, T., 2011.

Research output: Contribution to conference without publisher/journalPosterResearch

Øget ekspression af T-celle KV1.3 og KCa3.1 kanaler i biopsier fra patienter med aktiv Colitis Ulcerosa

Hansen, L. K., Larsen, D., Sadda, V., Nielsen, G., Klinge, L., Knudsen, T., Kjeldsen, J., Schaffalitzky de Muckadell, O. B. & Köhler, R., 2. Sep 2011.

Research output: Contribution to conference without publisher/journalPosterResearch

2010

Better Diagnostic Accuracy with Capsule Endoscopy Compared to MRI- and CT-enterography in Patients with Suspected or Newly Diagnosed Crohn's Disease

Dam Jensen, M., Nathan, T., Rafaelsen, S. R. & Kjeldsen, J., 2010. 1 p.

Research output: Contribution to conference without publisher/journalConference abstract for conferenceResearch