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Effect of Mycoplasma bovis on expression of inflammatory cytokines and matrix metalloproteinases mRNA in bovine synovial cells.
Veterinary Immunology and Immunopathology ( IF 1.8 ) Pub Date : 2019-08-26 , DOI: 10.1016/j.vetimm.2019.109920
Koji Nishi 1 , Satoshi Gondaira 1 , Mariko Okamoto 1 , Takanori Nebu 1 , Masateru Koiwa 2 , Hiromichi Ohtsuka 2 , Kiyokazu Murai 3 , Kazuya Matsuda 4 , Jumpei Fujiki 5 , Hidetomo Iwano 5 , Hajime Nagahata 1 , Hidetoshi Higuchi 1
Affiliation  

Mycoplasma bovis causes chronic arthritis in calves. Mycoplasma arthritis shows severe inflammatory reactions in joints that is commonly treated with antibiotics and results in significant economic losses in the calf industry. A previous study showed that inflammatory cytokines and matrix metalloproteinases (MMPs) produced by synovial cells promote progression of the pathophysiology of bacterial arthritis. However, the mechanism underlying the pathogenesis of bovine Mycoplasma arthritis has not been fully clarified. In this study, we examined the immunologic response of bovine synovial tissue to M. bovis. We observed significant increases in expression of interleukin (IL)-1β, IL-6, IL-8, MMP-1, and MMP-3 mRNA in synovial tissue from Mycoplasma arthritis calves compared with tissues from normal calves. Expression of IL-6, IL-8, and MMP-1 mRNA was also induced in cultured synovial cells stimulated with M. bovis, but not expression of IL-1β and MMP-3 mRNA. In contrast, the culture supernatant of peripheral blood mononuclear cells stimulated with M. bovis induced marked increases in the expression of IL-1β, IL-6, IL-8, MMP-1, and MMP-3 mRNA in synovial cells. Our results indicate that inflammatory cytokines and MMPs produced by synovial cells play a key role in the pathogenesis of Mycoplasma arthritis. We suggest that interactions between synovial cells and mononuclear cells in the presence of M. bovis induce expression of these cytokines and MMPs in synovial cells, resulting in severe inflammatory reactions in the joints.

中文翻译:

牛支原体对牛滑膜细胞炎性细胞因子和基质金属蛋白酶mRNA表达的影响。

牛支原体引起小牛的慢性关节炎。支原体关节炎在关节中显示出严重的炎症反应,通常用抗生素治疗,并导致犊牛业的重大经济损失。先前的研究表明,滑膜细胞产生的炎性细胞因子和基质金属蛋白酶(MMP)促进细菌性关节炎的病理生理进程。但是,尚未完全阐明牛支原体关节炎的发病机理。在这项研究中,我们检查了牛滑膜组织对牛分枝杆菌的免疫反应。我们观察到支原体关节炎犊牛滑膜组织中白细胞介素(IL)-1β,IL-6,IL-8,MMP-1和MMP-3 mRNA的表达明显高于正常犊牛组织。IL-6,IL-8,在牛分枝杆菌刺激的滑膜细胞中也诱导了MMP-1 mRNA的表达,但IL-1β和MMP-3 mRNA的表达却没有。相反,用牛分枝杆菌刺激的外周血单核细胞的培养上清液引起滑膜细胞中IL-1β,IL-6,IL-8,MMP-1和MMP-3 mRNA的表达显着增加。我们的结果表明,滑膜细胞产生的炎性细胞因子和MMP在支原体关节炎的发病机理中起着关键作用。我们建议滑膜细胞和单核细胞之间存在的牛分枝杆菌之间的相互作用诱导滑膜细胞中这些细胞因子和MMPs的表达,从而导致关节中严重的炎症反应。牛分枝杆菌刺激的外周血单核细胞培养上清液使滑膜细胞中IL-1β,IL-6,IL-8,MMP-1和MMP-3 mRNA的表达显着增加。我们的结果表明,滑膜细胞产生的炎性细胞因子和MMP在支原体关节炎的发病机理中起着关键作用。我们建议滑膜细胞和单核细胞之间存在的牛分枝杆菌之间的相互作用诱导滑膜细胞中这些细胞因子和MMPs的表达,从而导致关节中严重的炎症反应。牛分枝杆菌刺激的外周血单核细胞培养上清液使滑膜细胞中IL-1β,IL-6,IL-8,MMP-1和MMP-3 mRNA的表达显着增加。我们的结果表明,滑膜细胞产生的炎性细胞因子和MMP在支原体关节炎的发病机理中起着关键作用。我们建议滑膜细胞和单核细胞之间存在的牛分枝杆菌之间的相互作用诱导滑膜细胞中这些细胞因子和MMPs的表达,从而导致关节中严重的炎症反应。我们的结果表明,滑膜细胞产生的炎性细胞因子和MMP在支原体关节炎的发病机理中起着关键作用。我们建议滑膜细胞和单核细胞之间存在的牛分枝杆菌之间的相互作用诱导滑膜细胞中这些细胞因子和MMPs的表达,从而导致关节中严重的炎症反应。我们的结果表明,滑膜细胞产生的炎性细胞因子和MMP在支原体关节炎的发病机理中起着关键作用。我们建议滑膜细胞和单核细胞之间存在的牛分枝杆菌之间的相互作用诱导滑膜细胞中这些细胞因子和MMPs的表达,从而导致关节中严重的炎症反应。
更新日期:2019-11-01
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