Author/Authors :
Matharu، نويسنده , , Kabir and Zarember، نويسنده , , Kol A. and Marciano، نويسنده , , Beatriz E. and Kuhns، نويسنده , , Douglas B. and Spalding، نويسنده , , Christine and Garofalo، نويسنده , , Mary and Dimaggio، نويسنده , , Thomas and Estwick، نويسنده , , Tyra and Huang، نويسنده , , Chiung-Yu and Fink، نويسنده , , Danielle and Priel، نويسنده , , Debra L. and Fleisher، نويسنده , , Thomas A. and Ho، نويسنده ,
Abstract :
Chronic Granulomatous Disease (CGD) is an inherited defect in superoxide production leading to life-threatening infections, granulomas, and, possibly, abnormal immunoglobulin concentrations. We investigated whether factors controlling antibody production, such as B-cell activating factor (BAFF), were altered in CGD. CGD subjects had significantly increased mean (2.3-fold, p < 0.0001) plasma concentrations of BAFF compared to healthy donors. Patients on IFN-γ treatment had significantly higher BAFF concentrations compared with CGD patients not taking IFN-γ (1.6-fold, p < 0.005). Leukocytes from CGD subjects produced normal amounts of BAFF in response to IFN-γ or G-CSF in vitro. Expression of BAFF-R and TACI was significantly reduced on CGD B cells. Elevated BAFF in CGD correlated with CRP (R = 0.44), ESR (R = 0.49), and IgM (R = 0.47) and increased rapidly in healthy subjects following intravenous endotoxin administration. These findings suggest that elevated BAFF in CGD subjects and healthy donors is a consequence of acute and chronic inflammation.
