Studies of In Vitro B Lymphocyte Responses in Subjects Receiving Tetanus Toxoid Booster Immunization

Completed

Conditions studied: Healthy

In brief

One of the major interests of this laboratory is the characterization of the cellular subpopulations involved in the triggering and immunoregulation of B lymphocytes to produce antibodies. We are assessing the responses of individuals to produce antibodies against newly encountered antigens such as keyhole limpet hemocyanin (KLH) (approved project number 77-I-0130) and propose to assess the amnestic responses to the previously encountered antigen, tetanus toxoid. The purpose of this protocol is to add this recall antigen to our repertoire of antigens used to evaluate the immune response in man. Booster immunization with tetanus/diphtheria toxoid has now been used for several years by a number of clinical immunology laboratories throughout the country to assess B cell related immunologic profiles in patients and control normal subjects. We have recently developed a sensitive ELISA assay for IgM and IgG in vitro specific antibody responses against tetanus toxoid. This will allow us to carefully and precisely monitor the evolution and immunoregulation of the human B cell responses to this recall antigen. This is of particular importance and relevance to us in our ongoing studies of a number of diseases characterized by abnormalities of immunologic reactivity, including those treated with various regimens of immunosuppressive agents.

Key facts

Study ID
NCT00001173
Run by
National Institute of Allergy and Infectious Diseases (NIAID)
People needed
200
Starts
1980-06-01
Expected to finish
2000-06-01
Last updated by the study team
2008-03-04

Who can join

Age: any. Sex: any. Healthy volunteers: accepted.

Where it is running

Full record on ClinicalTrials.gov

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