Common variable immunodeficiency is a primary immunodeficiencydisease characterized by low serum concentrations of IgG, IgA,and usually IgM1,2. Although some patients appear to have onlyintrinsic B-cell defects, more than half also have abnormalitiesof T-cell activation and deficient secretion of interferon-and interleukin-2, -4, and -53,4,5,6,7. Most patients also havedeficient production of a B-cell differentiation factor, a 34-kdprotein that has been purified and lacks interleukin-2, -4,-6, and -10 activity8. We and others hypothesized that the Bcells in this disease may be defective because of a lack ofessential cytokines9,10,11,12. Because . . . [Full Text of this Article]
Case Report
Methods
Protocol for PEG-Conjugated Interleukin-2
Lymphocyte Populations and Proliferation
Assays for Interleukin-2, Interleukin-6, and B-Cell Differentiation Factor
In Vitro Immunoglobulin Production
Serum Immunoglobulins and Antibody Production
Results
Lymphocyte Proliferation
Production of Interleukin-2 and Interleukin-6
B-Cell Differentiation Factor
Serum Immunoglobulins and Antibody Production
Clinical Effect
Discussion
Source Information
From the Division of Clinical Immunology, Department of Medicine, Mount Sinai Medical Center, 1 Gustave Levy Pl., New York, NY 10029, where reprint requests should be addressed to Dr. Cunningham-Rundles.
References
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