Inflammatory Responses in Normal Volunteers and Patients With Abnormal Immune Responses

NCT ID: NCT00001257

Last Updated: 2019-08-06

Basic Information

• Recruitment Status: TERMINATED
• Total Enrollment: 169 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 1990-04-24
• Study Completion Date: 2019-08-02

Brief Summary

This study will investigate the inflammatory response. People with abnormal regulation of inflammation and immune defects often have an exaggerated or depressed inflammatory response that results in poor healing of recurrent infections. This study will measure and compare amounts of inflammatory mediators (chemicals involved in the inflammatory response) in healthy normal volunteers and in patients with abnormal immune responses.

Healthy normal volunteers and patients with host defense defects or excessive inflammation, as in vasculitis syndromes, may be eligible for this study. Patients must be between 6 and 65 years of age.

Participants will have eight small blisters raised on the forearm using a gentle suction device. The top of the blisters will be removed with scissors and a plastic template will be placed over the blisters. The wells of the template will be filled with a salt solution or a mixture of the subject s serum (fluid part of the blood without cells) and a salt solution. Some blisters may be covered with coverslips a small round piece of very thin sterilized glass before adding the fluid. Blister fluid will be removed from the wells at 3, 5, 8, and 24 hours with a syringe and analyzed for inflammatory mediators. A scab will form over the blisters and fall off in about 2 weeks.

Participants will have about 4 tablespoons of blood drawn in order to compare the inflammatory mediators in the blood with those in the blister fluid.

Detailed Description

Patients with abnormal regulation of inflammation and with host defense defects often have an exaggerated or depressed inflammatory response with resultant difficulty in healing of recurrent infections. Delayed healing can be manifested by either a delay in wound healing, granuloma formation along the incision line, or dehiscence of a partially healed wound without evidence of infection. We are interested in studying the dynamics of host immune defenses during an experimentally induced inflammatory response using a well-studied suction blister device. This protocol is designed to study mediators of inflammation in patients with host defense defects as well as patients with excessive inflammation as in the vasculitis syndromes. We will measure mediators of inflammation (e.g., C5a, leukotriene B4, interleukins, chemokines, tumor necrosis factor, interferon-gamma) by ELISA, radioimmunoassay, High Performance Liquid Chromatography, multiplex cytokine assays, and/or bioactivity assays. Furthermore, molecular characterization and host defense functions (e.g., respiratory burst, chemotaxis, phagocytosis, microbicidal activity) of cells recruited to the blisters will also be examined. In addition to the analysis of cell function, RNA will be prepared and subject to DNA microarray or quantitative RT-PCR studies to measure expression and dynamics of key inflammatory mediators. Many of these factors contribute to the inflammatory process and several are thought to be important in granuloma formation. If patients are found to have abnormal amounts of these mediators when compared to healthy volunteers or patients with other abnormalities it will help us understand the basis for their disease and new therapeutic strategies. For example, this blister study allowed us to identify a patient subsequently shown to have IRAK4 deficiency.

Conditions

Healthy Volunteers; Abnormal Phagocyte Function

Study Design

• Observational Model Type: COHORT
• Study Time Perspective: OTHER

Eligibility Criteria

Inclusion Criteria

Patients having or thought to have an immune defect between the ages of 6 and 65 years (inclusive) are eligible to participate.

Be a healthy adult of either sex and between the ages of 18 and 65 years old.

Weight greater than 110 pounds.

Not have any heart, lung, or kidney disease, or bleeding disorders.

Not have a history of viral hepatitis (B or C) since age 11.

Not have a history of intravenous injection drug use.

Not have a history of engaging in high-risk activities for exposure to the AIDS virus.

Not be pregnant.

Exclusion Criteria

Patients less than 6 or greater than 65 years of age.

Less than 18 years old or older than 65 years.

Have viral hepatitis (B or C).

HIV positive.

Receiving chemotherapeutic agent(s), or have underlying malignancy.

Pregnant.

Have history of heart, lung, kidney disease, or bleeding disorders.

• Minimum Eligible Age: 6 Years
• Maximum Eligible Age: 65 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

National Institute of Allergy and Infectious Diseases (NIAID)

NIH

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Kol A Zarember, Ph.D.

Role: PRINCIPAL_INVESTIGATOR

National Institute of Allergy and Infectious Diseases (NIAID)

Locations

National Institutes of Health Clinical Center, 9000 Rockville Pike

Bethesda, Maryland, United States

Countries

United States

References

Dale DC, Wolff SM. Skin window studies of the acute inflammatory responses of neutropenic patients. Blood. 1971 Aug;38(2):138-42. No abstract available.

Reference Type: BACKGROUND

PMID: 4933314 (View on PubMed)

Hellum KB, Solberg CO. Human leucocyte migration: studies with an improved skin chamber technique. Acta Pathol Microbiol Scand C. 1977 Dec;85C(6):413-23. doi: 10.1111/j.1699-0463.1977.tb03663.x.

Reference Type: BACKGROUND

PMID: 343498 (View on PubMed)

Kuhns DB, Long Priel DA, Gallin JI. Loss of L-selectin (CD62L) on human neutrophils following exudation in vivo. Cell Immunol. 1995 Sep;164(2):306-10. doi: 10.1006/cimm.1995.1174.

Reference Type: BACKGROUND

PMID: 7544694 (View on PubMed)

Other Identifiers

90-I-0120

Identifier Type: -

Identifier Source: secondary_id

900120

Identifier Type: -

Identifier Source: org_study_id