Characteristics of primary Sjögren’s syndrome patients with IgG4 positive plasma cells infiltration in the labial salivary glands

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• 作者：Chang Liu ; Huayong Zhang ; Genhong Yao ; Yunxia Hu ; Jingjing Qi…
• 关键词：IgG4 ; positive plasma cells ; IgG4 ; related diseases ; Primary Sjögren’s syndrome
• 刊名：Clinical Rheumatology
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：36
• 期：1
• 页码：83-88
• 全文大小：
• 刊物类别：Medicine
• 刊物主题：Rheumatology;
• 出版者：Springer London
• ISSN：1434-9949
• 卷排序：36

文摘

The purpose of this study was to investigate the characteristics of primary Sjögren’s syndrome (pSS) patients with IgG4 positive (IgG4+) plasma cell infiltration in labial salivary glands (LSGs). Paraffin sections of LSGs from 336 pSS patients were stained with IgG4 and IgG monoclonal antibodies. According to the infiltration of IgG4+ plasma cells, patients were divided and clinical and serological characteristics were analyzed and compared. Based on the infiltration of IgG4+ plasma cells in the LSGs, patients were divided into three subgroups, low IgG4, moderate IgG4, and high IgG4 groups. A negative association between the number of infiltrated IgG4+ plasma cells and the disease characteristics was observed. We found that the higher the IgG4+ expression in plasma cells, the lower the positive rates of serum anti-SSA antibodies, anti-SSB antibodies, antinuclear antibodies (ANA), and rheumatoid factor (RF). Besides, patients from the high IgG4 group had the highest frequency of interstitial lung disease (ILD, 30.6%) and tubulointerstitial nephritis (TIN, 13.9%), but the lowest frequency of leucopenia (13.9%), thrombocytopenia (11.1%), and abnormal thyroidal function (0%). PSS patients with different IgG4+ plasma cells infiltration in the LSGs had distinctive clinical and laboratory characteristics. It may help us to further understand the role of IgG4+ plasma cells in pSS.