Baodong Qin1, Jiaqi Wang2, Ning Ma1, Min Yang1, Haitao Fu1, Yan Liang1, Fenglou Huang1, Zaixing Yang3, Renqian Zhong4. 1. Department of Laboratory Diagnostics, Changzheng Hospital, Second Military Medical University, Shanghai, China. 2. Department of stomatology, Changzheng Hospital, Second Military Medical University, Shanghai, China. 3. Department of Laboratory Diagnostics, Changzheng Hospital, Second Military Medical University, Shanghai, China. Electronic address: yangzaixingdiyi@163.com. 4. Department of Laboratory Diagnostics, Changzheng Hospital, Second Military Medical University, Shanghai, China. Electronic address: 13901628473@163.com.
Abstract
OBJECTIVES: Defects in Tyro3/Axl/Mer signaling may lead to impaired phagocytosis of apoptotic cells, eventually contributing to the development of autoimmune disease. The association of TAM signaling with several autoimmune disease has been investigated, but it remains unclear in primary Sjögren's syndrome. Therefore, the aim of this study was to evaluate the level of TAM signaling in primary Sjögren's syndrome with its clinical significance. METHODS: Real-Time Polymerase Chain Reaction was used to determine the mRNA expression of Mer, Tyro-3, Axl, Gas6, and Protein S in Peripheral Blood Mononuclear Cell from 43 pSS and 46 control. The Enzyme-Linked Immunosorbent Assay method was used to test plasma levels of soluble TAM signaling from those individuals, and the relationship of their levels with clinical characteristic was evaluated. RESULTS: The mRNA expression levels of Tyro-3, Axl were decreased in pSS patients. When considering the plasma level, increased levels of soluble Mer was observed with statistically significant difference. Soluble Mer levels were positively correlated with IgG levels (r=0.53, P<0.01), Erythrocyte Sedimentation Rate levels (r=0.44, P<0.01) and Sjögren's Syndrome Disease Activity Index (r=0.48, P<0.01). And the levels of soluble Mer in patients with the presence of SSA/SSB were higher than those without SSA/SSB. CONCLUSIONS: The plasma levels of sMer were increased in pSS patients, which was associated with inflammatory response and disease activity.
OBJECTIVES: Defects in Tyro3/Axl/Mer signaling may lead to impaired phagocytosis of apoptotic cells, eventually contributing to the development of autoimmune disease. The association of TAM signaling with several autoimmune disease has been investigated, but it remains unclear in primary Sjögren's syndrome. Therefore, the aim of this study was to evaluate the level of TAM signaling in primary Sjögren's syndrome with its clinical significance. METHODS: Real-Time Polymerase Chain Reaction was used to determine the mRNA expression of Mer, Tyro-3, Axl, Gas6, and Protein S in Peripheral Blood Mononuclear Cell from 43 pSS and 46 control. The Enzyme-Linked Immunosorbent Assay method was used to test plasma levels of soluble TAM signaling from those individuals, and the relationship of their levels with clinical characteristic was evaluated. RESULTS: The mRNA expression levels of Tyro-3, Axl were decreased in pSS patients. When considering the plasma level, increased levels of soluble Mer was observed with statistically significant difference. Soluble Mer levels were positively correlated with IgG levels (r=0.53, P<0.01), Erythrocyte Sedimentation Rate levels (r=0.44, P<0.01) and Sjögren's Syndrome Disease Activity Index (r=0.48, P<0.01). And the levels of soluble Mer in patients with the presence of SSA/SSB were higher than those without SSA/SSB. CONCLUSIONS: The plasma levels of sMer were increased in pSS patients, which was associated with inflammatory response and disease activity.
Authors: Bishuang Cai; Edward B Thorp; Amanda C Doran; Brian E Sansbury; Mat J A P Daemen; Bernhard Dorweiler; Matthew Spite; Gabrielle Fredman; Ira Tabas Journal: J Clin Invest Date: 2017-01-09 Impact factor: 14.808
Authors: Julia Vullings; Juliana P Vago; Claire E J Waterborg; Rogier M Thurlings; Marije I Koenders; Peter L E M van Lent; Peter M van der Kraan; Flavio A Amaral; Fons A J van de Loo Journal: J Immunol Res Date: 2020-09-11 Impact factor: 4.818