Frequency and distribution of CD4+CXCR5+ follicular B helper T  cells within involved tissues in IgG4‑related ophthalmic disease.

Frequency and distribution of CD4+CXCR5+ follicular B helper T cells within involved tissues in IgG4‑related ophthalmic disease. Mol Med Rep. 2017 Oct 12;: Authors: Yang H, Wei R, Liu Q, Shi Y, Li J Abstract Immonoglobulin G4‑related ophthalmic disease (IgG4‑ROD) is a IgG4‑RD and exhibits two main characteristics: Fibrosis that is not necessarily marked histopathologically; and frequent formation of germinal centers (GCs). Follicular B helper T (Tfh) cells are now recognized as the true helper cells for B cells in antibody responses. In the present study, the profile and distribution of Tfh cells in involved tissues from patients with IgG4‑ROD was compared to those of type 1 autoimmune pancreatitis (AIP) and patients with IgG4‑related lymphadenopathy (IgG4‑RL). A total of 7 patients with IgG4‑ROD, 7 patients with type 1 AIP or IgG4‑RL and 7 IgG4‑negative controls were evaluated. The expression of Tfh‑cell immunological proteins, the inducible T‑cell costimulator, B‑cell lymphoma 6 protein, C‑X‑C chemokine receptor type 5 (CXCR5) and interleukin‑21 (IL‑21) in affected tissues was analyzed using immunohistochemical staining and dual immunofluorescence. It was demonstrated that patients with IgG4‑RD exhibited a significantly increased number of CD4+CXCR5+ Tfh cells compared with the IgG4‑negative controls. Furthermore, CD4+CXCR5+ Tfh cells were detected in and outside of GCs in patients with IgG4...
Source: Molecular Medicine Reports - Category: Molecular Biology Tags: Mol Med Rep Source Type: research