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Abstract Number: 512

The Significance Of Ectopic Germinal Center In Minor Salivary Gland Of Patients With Sjögren’s Syndrome

Kyung-Eun Lee1, Dong-Jin Park1, Jeong-Won Lee2, Ji-Hyoun Kang2, Lihui Wen1, Tae-Jong Kim3, Yong-Wook Park1 and Shin-Seok Lee4, 1Rheumatology, Chonnam National University Medical School, Gwangju, South Korea, 2Chonnam National University Medical School, Gwangju, South Korea, 3Rheumatology, Chonnam National University Medical School and Hospital, Gwangju, South Korea, 4Dept of Int Med/Rheumatology, Chonnam National University Medical School, Gwangju, South Korea

Meeting: 2013 ACR/ARHP Annual Meeting

Keywords: Sjogren's syndrome

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Session Information

Session Title: Sjögren's Syndrome: Clinical Aspects

Session Type: Abstract Submissions (ACR)

Background/Purpose: To investigate whether the presence of germinal center (GC) in minor salivary glands of patients with Sjögren’s syndrome (SS) is associated with different clinical and laboratory features.

Methods: Minor salivary gland tissue biopsies from 93 SS patients were used to identify GC-like structures and germinal center was confirmed by CD21-positive follicular dendritic cell networks. Sociodemographic, glandular, and extraglandular manifestations, and laboratory findings including autoantibodies, complement, and immunoglobulin levels, were analyzed. EULAR SS disease activity index (ESSDAI) and SS disease damage index (SSDDI) were also measured.

Results: GC-like structures were observed in 28 of 93 SS patients (30.1%). Mean focus score was significantly higher in GC-positive patients than in GC-negative patients. GC-positive patients had higher CRP levels and had higher prevalence of rheumatoid factor, anti-CCP antibody, and anti-SSA/Ro antibody compared to GC-negative patients. However, glandular and extra-glandular manifestations were not different between the two groups.

Conclusion: Our findings showed that SS patients who had GC-like structures in minor salivary glands had different laboratory profiles compared to those patients who didn’t have. Long-term follow-up of these patients will be necessary to see whether these laboratory abnormalities translate into changes in clinical features.


Disclosure:

K. E. Lee,
None;

D. J. Park,
None;

J. W. Lee,
None;

J. H. Kang,
None;

L. Wen,
None;

T. J. Kim,
None;

Y. W. Park,
None;

S. S. Lee,
None.

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