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PsoriasisNCT00365625

Determination of Lymphocyte JAM-C Expression in Patients With Psoriasis Vulgaris

An observational study of Psoriasis and Psoriasis Vulgaris, run by Johann Wolfgang Goethe University Hospital at 1 site in Germany.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial summary

The stepwise process of leukocyte extravasation to inflamed tissues depends on the expression of a variety of cytokines and adhesion molecules. Recently much attention has focused on the Junctional Adhesion Molecules (JAM). Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Psoriasis, Psoriasis Vulgaris
How many people
30 participants
Where
1 siteGermany
Study dates
Jul 2005to Dec 2007
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: psoriasis patients

Who may be able to join

  • Psoriasis vulgaris
  • PASI >/= 10 at inclusion

Who cannot join

  • Psoriasis arthritis
  • Psoriasis pustulosa
  • Psoriasis palmoplantaris
  • Pregnancy
  • current infectious disease

Trial locations and contacts

1 site in 1 country.

Germany1 site, 1 recruiting
  • Department of Dermatology - Clinic of the Johann Wolfgang Goethe University

    Frankfurt am Main, Hesse, 60590

    Ralf J Ludwig, MD, 0049-69-6301- ext. 6162, r.ludwig@em.uni-frankfurt.de

    Wolf-Henning Boehncke, Professor, 0049-69-6301- ext. 5743, boehncke@em.uni-frankfurt.de

    Recruiting

Other trials in Germany

About this study

Official title: Patient Orientated Basic Science Investigation: Determination of Lymphocyte JAM-C Expression in Patients With Psoriasis Vulgaris

The stepwise process of leukocyte extravasation to inflamed tissues depends on the expression of a variety of cytokines and adhesion molecules. Recently much attention has focused on the Junctional Adhesion Molecules (JAM). The three members of this adhesion molecule family, namely, JAM-A, -B and -C, have been shown to govern the last step of leukocyte extravasation (transmigration) - the process of leukocytes passing between endothelial cells. In addition to transmigration, some members of this family seem to support additional steps in the leukocyte extravasation cascade. The investigators recently showed, that antibody-mediated inhibition of JAM-C significantly reduced hapten induced skin inflammation (J Invest Dermatol;125(5):969).

Recent unpublished work from our laboratory showed, that JAM-C expression of lymphocytes can be up-regulated through specific activators. Hence, the investigators hypothesize, that JAM-C expression is elevated in patients with psoriasis. As it is currently not know, which factors may influence the expression of JAM-C, the investigators intend to analyse JAM-C expression on CD3+CD41- cells at several time-points during the treatment of psoriatic patients. Expression of JAM-C will then be correlated to disease activity (PASI).

Read the detailed description

The stepwise process of leukocyte extravasation to inflamed tissues depends on the expression of a variety of cytokines and adhesion molecules. Recently much attention has focused on the Junctional Adhesion Molecules (JAM). The three members of this adhesion molecule family, namely, JAM-A, -B and -C, have been shown to govern the last step of leukocyte extravasation (transmigration) - the process of leukocytes passing between endothelial cells. In addition to transmigration, some members of this family seem to support additional steps in the leukocyte extravasation cascade. We recently showed, that antibody-mediated inhibition of JAM-C significantly reduced hapten induced skin inflammation (J Invest Dermatol;125(5):969).

Recent unpublished work from our laboratory showed, that JAM-C expression of lymphocytes can be up-regulated through specific activators. Hence, we hypothesize, that JAM-C expression is elevated in patients with psoriasis. As it is currently not know, which factors may influence the expression of JAM-C, we intend to analyse JAM-C expression on CD3+CD41- cells at several time-points during the treatment of psoriatic patients. Expression of JAM-C will then be correlated to disease activity (PASI).

Detailed in- and exclusion criteria are outlined below.

Keywords
Psoriasis, JAM3 protein, human, Cell Adhesion Molecules, Skin, Inflammation, Lymphocytes
Medical subject headings
Psoriasis, Inflammation

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted17 Aug 2006 (estimated)
  2. Study startJul 2005
  3. Study completionDec 2007 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Time perspective
Prospective
Enrolment
30 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00365625
Sponsor's protocol ID
244/06
Status last verified
Aug 2009
First submitted
16 Aug 2006
Last updated
2 Feb 2010
Results posted
No

Publications

  • Ludwig RJ, Zollner TM, Santoso S, Hardt K, Gille J, Baatz H, Johann PS, Pfeffer J, Radeke HH, Schon MP, Kaufmann R, Boehncke WH, Podda M. Junctional adhesion molecules (JAM)-B and -C contribute to leukocyte extravasation to the skin and mediate cutaneous inflammation. J Invest Dermatol. 2005 Nov;125(5):969-76. doi: 10.1111/j.0022-202X.2005.23912.x.

    PubMed 16297198
  • Santoso S, Sachs UJ, Kroll H, Linder M, Ruf A, Preissner KT, Chavakis T. The junctional adhesion molecule 3 (JAM-3) on human platelets is a counterreceptor for the leukocyte integrin Mac-1. J Exp Med. 2002 Sep 2;196(5):679-91. doi: 10.1084/jem.20020267.

    PubMed 12208882
  • Chavakis T, Keiper T, Matz-Westphal R, Hersemeyer K, Sachs UJ, Nawroth PP, Preissner KT, Santoso S. The junctional adhesion molecule-C promotes neutrophil transendothelial migration in vitro and in vivo. J Biol Chem. 2004 Dec 31;279(53):55602-8. doi: 10.1074/jbc.M404676200. Epub 2004 Oct 14.

    PubMed 15485832
  • Muller WA. Leukocyte-endothelial-cell interactions in leukocyte transmigration and the inflammatory response. Trends Immunol. 2003 Jun;24(6):327-34. doi: 10.1016/s1471-4906(03)00117-0.

    PubMed 12810109
  • Vonlaufen A, Aurrand-Lions M, Pastor CM, Lamagna C, Hadengue A, Imhof BA, Frossard JL. The role of junctional adhesion molecule C (JAM-C) in acute pancreatitis. J Pathol. 2006 Aug;209(4):540-8. doi: 10.1002/path.2007.

    PubMed 16767690
  • Santoso S, Orlova VV, Song K, Sachs UJ, Andrei-Selmer CL, Chavakis T. The homophilic binding of junctional adhesion molecule-C mediates tumor cell-endothelial cell interactions. J Biol Chem. 2005 Oct 28;280(43):36326-33. doi: 10.1074/jbc.M505059200. Epub 2005 Aug 23.

    PubMed 16118203
  • Lamagna C, Hodivala-Dilke KM, Imhof BA, Aurrand-Lions M. Antibody against junctional adhesion molecule-C inhibits angiogenesis and tumor growth. Cancer Res. 2005 Jul 1;65(13):5703-10. doi: 10.1158/0008-5472.CAN-04-4012.

    PubMed 15994945
  • Aurrand-Lions M, Lamagna C, Dangerfield JP, Wang S, Herrera P, Nourshargh S, Imhof BA. Junctional adhesion molecule-C regulates the early influx of leukocytes into tissues during inflammation. J Immunol. 2005 May 15;174(10):6406-15. doi: 10.4049/jimmunol.174.10.6406.

    PubMed 15879142

Questions about this trial

What is this clinical trial studying?

An observational study of Psoriasis and Psoriasis Vulgaris, run by Johann Wolfgang Goethe University Hospital at 1 site in Germany.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: status not confirmed, as of the sponsor's last update on 2 Feb 2010. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Germany. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

Contact Ralf J Ludwig, MD (0049-69-6301- ext. 6162, r.ludwig@em.uni-frankfurt.de), or a site near the patient. AzTrials does not enrol participants or take referrals.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00365625, which also lists 8 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 2 Feb 2010.

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