当前位置： SCI文献检索 > INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE期刊下所有文献 > Periductal area as the primary site for T-cell activation in lacrimal gland chronic graft-versus-host disease.

Periductal area as the primary site for T-cell activation in lacrimal gland chronic graft-versus-host disease.

Abstract：

PURPOSE:To examine immune processes in the lacrimal gland of patients with chronic graft-versus-host disease (cGVHD) by evaluating the expression of surface molecules associated with T-cell activation. METHODS:Antibodies to CD4, CD8, CD34, CD40, CD54, CD80, CD86, CD154, and HLA-DR were used for immunohistochemical analysis of lacrimal gland biopsy specimens obtained from nine patients with cGVHD and five with Sjögren's syndrome (SS). The regions of interest were further assessed by transmission electron microscopy. RESULTS:CD4(+) and CD8(+) T cells were mainly detected in the periductal areas of the glands of patients with cGVHD, but were distributed throughout the acinar areas in patients with SS. In the periductal areas of patients with cGVHD, a subpopulation of CD4(+) and CD8(+) T cells expressed the activation marker CD154. In addition, CD4(+) and CD8(+) T cells were colocalized with mononuclear infiltrates and stromal fibroblasts expressing the full component of surface molecules necessary for antigen presentation, including HLA-DR, CD54, CD40, CD80, and CD86. Electron microscopy revealed activated fibroblasts that embraced lymphocytes and macrophages with their processes. Also, there were more CD8(+) T cells in the glandular epithelia of patients with cGVHD than in those with SS. Intraepithelial T cells were attached to epithelial cells by several primitive contacts and colocalized with dead cells. CONCLUSIONS:The results strongly suggest that CD4(+) and CD8(+) T cells in the lacrimal glands of patients with cGVHD are primarily activated in the periductal area through antigenic stimulation by potent antigen-presenting cells and stromal fibroblasts, and exert various effector functions, including cytotoxic effects on glandular epithelial cells.

journal_name

Invest Ophthalmol Vis Sci

journal_title

Investigative ophthalmology & visual science

authors

Ogawa Y,Kuwana M,Yamazaki K,Mashima Y,Yamada M,Mori T,Okamoto S,Oguchi Y,Kawakami Y

doi

10.1167/iovs.02-0699

keywords:

subject

Has Abstract

pub_date

2003-05-01 00:00:00

pages

1888-96

issue

eissn

0146-0404

issn

1552-5783

journal_volume

pub_type

杂志文章

在线工具

Periductal area as the primary site for T-cell activation in lacrimal gland chronic graft-versus-host disease.