Journal of Clinical and Cellular Immunology
Open Access
ISSN: 2155-9899
ISSN: 2155-9899
Grant Hayman
United Kingdom
Research Article
Patients with Chronic Sarcoidosis have Reduced CD27+IgM+IgD+ Unswitched Memory B cells and an Expanded Population of Terminal Effector CD8+CD27-CD28- T cells
Author(s): Adrian Heaps, Veronica Varney, Shree Bhaskaran, Brian Ford, Angelina Mosley, Ross Sadler, Lisa Ayers, Jane Evans, Amena Warner, Grant Hayman, Amolak Bansal and Nazira SumarAdrian Heaps, Veronica Varney, Shree Bhaskaran, Brian Ford, Angelina Mosley, Ross Sadler, Lisa Ayers, Jane Evans, Amena Warner, Grant Hayman, Amolak Bansal and Nazira Sumar
Granulomas that occur in sarcoidosis are histologically identical to those found in a subset of Common Variable Immunodeficiency (CVID) patients where they are associated with a reduction in class switched memory B lymphocytes. The aim of this study was to investigate whether the abnormalities in peripheral blood lymphocyte populations associated with granulomatous variant CVID (gvCVID) are also present in individuals with sarcoidosis. We examined B lymphocyte populations using flow cytometry and found that the reduction of class switched memory (CSM: CD19+CD27+IgM-IgD-) and unswitched memory (CD19+CD27+IgM+IgD+) B cells in our sarcoidosis cohort was similar to that previously reported in gvCVID patients. The reduction of class switched memory B cells in sarcoidosis patients indicated a possible defect in the T cell repertoire as antibody class switching requires T cell help. We subse.. View More»
DOI:
10.4172/2155-9899.1000132