Document 0586 DOCN M9480586 TI Study of B and T cell phenotypes in blood from patients with common variable immunodeficiency (CVID). DT 9410 AU Farrant J; Spickett G; Matamoros N; Copas D; Hernandez M; North M; Chapel H; Webster AD; Immunodeficiency Diseases Research Group, Clinical Research; Centre, Harrow, UK. SO Immunodeficiency. 1994;5(2):159-69. Unique Identifier : AIDSLINE MED/94305532 AB B and T cell phenotypes in peripheral blood from 71 CVID patients have been measured in a study using directly conjugated monoclonal antibodies and two colour flow cytometry. Data was compared between different patient groups (based on whether their B cells could secrete IgM or IgG in vitro) and normal donors. There was a clear correlation between abnormalities of both B and T cells and the different patient groups. There were reduced absolute numbers of circulating CD4+ T cells, particularly those of the CD4+.CD45RA+ subset, and of CD19+ B cells in those patients whose B cells failed to secrete IgM or IgG in vitro. This demonstrates an association between B cell lymphopenia, failure of B cell immunoglobulin production in vitro and T cell subset lymphopenia in CVID. It supports the view that this group of CVID patients has a disease involving T cell regulation of B cells of varying severity. DE Antibodies, Monoclonal Antigens, CD3/IMMUNOLOGY B-Lymphocytes/*IMMUNOLOGY Common Variable Immunodeficiency/*IMMUNOLOGY CD4-CD8 Ratio Flow Cytometry Human Immunophenotyping Leukocyte Count Lymphopenia/IMMUNOLOGY Support, Non-U.S. Gov't T-Lymphocytes/*IMMUNOLOGY T-Lymphocytes, Suppressor-Effector/IMMUNOLOGY T4 Lymphocytes/IMMUNOLOGY JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).