Reduced TIPE2 expression is inversely associated with proinflammatory cytokines and positively correlated with bone mineral density in patients with osteoporosis

促炎细胞因子 骨质疏松症 医学 发病机制 骨矿物 内科学 肿瘤坏死因子α 内分泌学 炎症
作者
Jie Jiang,Xiaoming Pang,Hong Liu,Xiuzhen Yang,Yong Everett Zhang,Xinxin Xiang,Jigang Li,Tao Li,Peiqing Zhao
出处
期刊:Life Sciences [Elsevier BV]
卷期号:216: 227-232 被引量:5
标识
DOI:10.1016/j.lfs.2018.11.054
摘要

The tumor necrosis factor (TNF)-alpha-induced protein 8-like 2 (TIPE2) participates in multiple inflammatory diseases. However, its underlying mechanism in osteoporosis has not been elucidated. The aim of current study is to preliminarily clarify the function of TIPE2 in the pathogenesis of osteoporosis. TIPE2 expression in patients with osteoporosis was measured by Western blot and qRT-PCR methods. Proinflammatory cytokines including TNF-α, IL-1 and IL-6 were assessed via enzyme-linked immunosorbent assay. Serum fasting PINP and β-CTX were measured by the chemiluminescence method. Simple logistic regression analysis was performed for the odds ratio (OR) for TIPE2. TIPE2 expression in patients with osteoporosis was dramatically decreased and negatively correlated with proinflammatory cytokines. Furthermore, TIPE2 level was negatively correlated with fasting β-CTX, but not PINP, indicating that TIPE2 participates in the pathogenesis of osteoporosis dominantly by supression of bone resorption. Interestingly, TIPE2 expression level was positively correlated with bone mineral density (BMD), and its expression level can predict the risk of bone fracture using the simple logistic regression assay. Our findings clarify that TIPE2 alleviates the pathogenesis of osteoporosis by suppressing the inflammatory status and the ability of TIPE2 for predicts bone fracture further demonstrated that TIPE2 might serve as a novel diagnostic marker and a therapeutic target for osteoporosis.
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