Ignite Creation Date:
2024-05-05 @ 11:22 AM
Last Modification Date:
2024-10-26 @ 9:02 AM
Study NCT ID:
NCT00001760
Status:
COMPLETED
Last Update Posted:
2007-12-13
First Post:
1999-11-03
Brief Title:
Cytokine Production Patterns in Patients With Systemic Mastocytosis Compared With Atopic Dermatitis and Healthy Individuals
Sponsor:
National Institute of Allergy and Infectious Diseases NIAID
Organization:
National Institutes of Health Clinical Center CC
Study Overview
Official Title:
Determination of Cytokine Production Patterns in the Skin of Patients With Systemic Mastocytosis and Atopic Dermatitis Using the Suction Blister Technique
Status:
COMPLETED
Status Verified Date:
2001-12
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
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 andor 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
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 andor 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
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 cytokineschemokines 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 cytokinechemokine 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
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None
Secondary IDs
| Secondary ID | Type | Domain | Link |
|---|---|---|---|
| 98-I-0049 | None | None | None |