Anti-Inflammatory Effects of HDL in Mice With Rheumatoid Arthritis Induced by Collagen

作者：Wang, Yunlong^*; Lu, Shulai; Zhang, Guoqing; Wu, Shaofeng; Yan, Ying; Dong, Qingzhe; Liu, Bin^*

来源：Frontiers in Immunology, 2018, 9: 1013.

DOI：10.3389/fimmu.2018.01013

• high-density lipoprotein
• rheumatoid arthritis
• inflammation
• inflammatory cytokines
• collagen

Objective: To investigate the anti-inflammatory effects of high-density lipoprotein (HDL) in mice with rheumatoid arthritis (RA) induced by collagen.
Methods: Male DBA/1 mice (8 -week-old) were divided into three groups: control (treated with saline), collagen-induced arthritis (CIA), and CIA + HDL. CIA was induced with bovine type II collagen, and after the injection of bovine type II collagen, the CIA + HDL group received an injection of HDL on day 28 followed by HDL injections four times every 3 days. Mice were weighed, the paws were scored, and paw thickness was measured beginning on day 21. Additionally, the levels of tumor necrosis factor-alpha (TNF-alpha) and IL-6 were measured by ELISA kits, tissue sections of paws were stained with hematoxylin and eosin, and the inflammatory signaling pathway was analyzed by western blotting.
Results: We found that the production of pro-inflammatory cytokines TNF-alpha. and IL-6 in mice which received HDL decreased 45.14 and 35.02%, respectively. And we also found that HDL could significantly decrease the level of anti-type-II-collagen IgG2a and inhibit the neutrophil infiltration and cell proliferation and protect the ankle joint from type II collage-induced injury. Western blot analysis indicated that HDL could also inhibit the activation of the NF-kappa B, MAPK, and ERK signaling pathways in RA mice.
Conclusion: HDL can inhibit the inflammation induced by bovine type II collagen and the development of RA.

• 出版日期2018-5-11
• 单位青岛大学; 青岛市市立医院