Serum IL-35 Levels Are Associated With Activity and Progression of Sarcoidosis.

Frontiers in Immunology
Zhao MengmengLi Hui-Ping

Abstract

Objective: To investigate the relationship of interleukin (IL)-35 with sarcoidosis. Methods: We enrolled 114 inpatients and outpatients with sarcoidosis at the Shanghai Pulmonary Hospital, and 24 healthy controls between March 2015 and December 2017. Serum and whole blood were collected during the follow-up period. Serum IL-35 levels were detected by ELISA. Proportions of Breg, Tfh, and Treg cells in the peripheral blood were detected using flow cytometry (FCM). The mRNA levels of p35, EBI3, and GAPDH in CD19+ cells and CD4+ cells were detected by real-time PCR. Sarcoidosis granuloma mice models were established with Propionibacterium acnes (PA) and one group was treated with IL-35 antibodies. Proportions of Breg, Tfh, and Treg cells in the peripheral blood and bronchoalveolar lavage fluid (BALF) were detected by FCM. Results: The IL-35 levels and the proportions of Breg and Tfh cells in the peripheral blood of patients with active sarcoidosis were significantly higher compared to patients with stable sarcoidosis and healthy controls. Moreover, the IL-35 level in patients with progressive disease was lower than that found at the initial visit. EBI3 and p35 mRNA levels in CD19+ cells for patients with active sarcoidosis were sig...Continue Reading

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Methods Mentioned

BETA
enzyme linked immunosorbent assay
biopsy
X-ray
enzyme-linked immunosorbent assay
ELISA
flow cytometry
density gradient centrifugation
Assay
PCR
lavage

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