Trial record 14 of 64 for:    "Systemic mastocytosis"

Cytokine Production Patterns in Patients With Systemic Mastocytosis Compared With Atopic Dermatitis and Healthy Individuals

This study has been completed.
Sponsor:
Information provided by:
National Institutes of Health Clinical Center (CC)
ClinicalTrials.gov Identifier:
NCT00001760
First received: November 3, 1999
Last updated: December 12, 2007
Last verified: December 2001
  Purpose

Cytokine Production Patterns in Patients with Systemic Mastocytosis Compared with Atopic Dermatitis and Healthy Individuals

Summary: This study will examine how mast cells (cells involved in allergic reactions) migrate and multiply in the skin of patients with mastocytosis, a condition characterized by too many mast cells in the body. The mast cells tend to multiply in the skin, causing dark, itchy skin spots known as urticaria pigmentosa. This study will determine if the skin of patients with mastocytosis produces chemicals called cytokines that cause mast cells to migrate to the skin and multiply. The findings will be compared with those from normal volunteers and patients with atopic dermatitis, a skin disease characterized by recurrent itchy rash usually seen in people with a family history of allergies.

Healthy volunteers, patients with mastocytosis and patients with atopic dermatitis 18 years of age and older may be eligible for this study. Participants will have the following tests and procedures:

  • Suction blisters - Two to eight small blisters will be raised on the forearm using gentle suction. The fluid in the blisters will be collected with a syringe to study the chemicals produced by the skin. The tops of the blisters may be removed for research.
  • Template study - Patients with high cytokine content in the blister fluid may have a template study. For this procedure, a plastic block (template) with holes matching the blister sites is placed over the blistered area. The wells of the template are filled with salt water and the fluid is removed with a syringe at 3, 8 and/or 24 hours. Patients are hospitalized for 24 hours for this study.
  • Skin biopsy - A skin biopsy will be done to correlate cytokine levels with the number of mast cells in the skin. An area of skin is numbed with an anesthetic and a small circular area about the size of a pencil eraser is removed, using a sharp cookie cutter-type instrument.
  • Blood draw - About 4 tablespoons of blood will be drawn to compare the chemicals in the blood with those in the blister fluid. The blood will also be analyzed for a complete blood count, clotting factors and substances that may be elevated in people with allergies.

Condition
Atopic Dermatitis
Healthy
Mastocytosis

Study Type: Observational
Official Title: Determination of Cytokine Production Patterns in the Skin of Patients With Systemic Mastocytosis and Atopic Dermatitis Using the Suction Blister Technique

Resource links provided by NLM:


Further study details as provided by National Institutes of Health Clinical Center (CC):

Estimated Enrollment: 40
Study Start Date: January 1998
Estimated Study Completion Date: December 2001
Detailed Description:

Systemic mastocytosis is a disease characterized by an abnormal accumulation of mast cells in skin, bone marrow and viscera. Precise mechanisms of events leading to the migration and proliferation of mast cells in skin is not known. We propose to investigate the in vivo cytokine and chemokine production patterns of human skin in patients with mastocytosis and compare these findings to those of patients with atopic dermatitis and to healthy volunteers, using the suction blister technique. The cytokines/chemokines of interest in this study are stem cell factor (SCF), interleukin (IL)-3, IL-4, IL-6, IL-9, IL-10, TNF-alpha, TGF-beta, MCP-1 and RANTES, all of which have been shown to take part in the proliferation, differentiation or chemotaxis of mast cells. Our hypothesis is that human skin is producing mediators which allow the mast cells to migrate and proliferate in skin, resulting in the clinical picture of urticaria pigmentosa. Suction blisters will be generated in patients, and the cytokine/chemokine contents of the blister fluids will be analyzed by immunoassay. If the chemokine content of the blister fluid is found to be high, chemotaxis of mast cell precursors to the skin may also be examined in vivo by placing a template filled with sterile saline over the blister sites. Punch biopsies will be performed to correlate cytokine levels with mast cell numbers. This study will aid in understanding the pathogenesis of cutaneous mast cell disease and may provide insights into the regulation of mast cell growth and differentiation in tissue-specific microenvironments. It is hoped that these studies will contribute to the design of novel treatment strategies against mast cell associated skin diseases.

  Eligibility

Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Criteria

General: Age equal to or greater than 18.

Access to a primary medical care provider outside of the NIH.

Able to give informed consent.

No history of malignancy or autoimmune disease such as rheumatoid arthritis, vasculitis, pyoderma gangrenosum, psoriasis.

No use of systemic corticosteroids within the past month.

No use of local corticosteroids at the proposed blistering site within the past month.

No evidence of current acute infection.

INR less than or equal to 1.5, PTT less than or equal to 40, platelet count greater than or equal to 100,000/mm(3).

No personal or family history of keloid formation.

Blood glucose less than or equal to 160.

No use of any investigative drugs within the past month.

No allergy to lidocaine.

Healthy volunteers must not have a history of atopic dermatitis, mastocytosis or chronic urticaria.

Mastocytosis: Histologic evidence of mast cell hyperplasia in at least one organ system.

Atopic Dermatitis: Must have at least 3 major and 3 minor criteria.

No history of mastocytosis.

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00001760

Locations
United States, Maryland
National Institute of Allergy and Infectious Diseases (NIAID)
Bethesda, Maryland, United States, 20892
Sponsors and Collaborators
  More Information

Publications:
ClinicalTrials.gov Identifier: NCT00001760     History of Changes
Other Study ID Numbers: 980049, 98-I-0049
Study First Received: November 3, 1999
Last Updated: December 12, 2007
Health Authority: United States: Federal Government

Keywords provided by National Institutes of Health Clinical Center (CC):
Stem Cell Factor
Cytokine
Chemokines
Chemotaxis
Mast Cells
Normal Volunteer
Systemic Mastocytosis
Atopic Dermatitis

Additional relevant MeSH terms:
Dermatitis
Dermatitis, Atopic
Mastocytosis
Mastocytosis, Systemic
Urticaria Pigmentosa
Genetic Diseases, Inborn
Hypersensitivity
Hypersensitivity, Immediate
Immune System Diseases
Mastocytosis, Cutaneous
Neoplasms
Neoplasms by Histologic Type
Neoplasms, Connective and Soft Tissue
Neoplasms, Connective Tissue
Pigmentation Disorders
Skin Diseases
Skin Diseases, Eczematous
Skin Diseases, Genetic

ClinicalTrials.gov processed this record on October 20, 2014