中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (6): 894-900.doi: 10.3969/j.issn.2095-4344.1572

• 药物控释材料 drug delivery materials • 上一篇    下一篇

不同磨损颗粒对体外培养人外周血单核细胞的影响

李 朋,杨淑野,张 锴,贾 龙,杜刚强,刘 栋,张新军,张德刚,王志刚   

  1. 滨州医学院附属医院创伤骨科,山东省滨州市 256600
  • 收稿日期:2018-10-26 出版日期:2019-02-28 发布日期:2019-02-28
  • 通讯作者: 张锴,博士,主任医师,研究生导师,滨州医学院附属医院创伤骨科,山东省滨州市 256600
  • 作者简介:李朋,男,1988年生,山东省庆云县人,汉族,2015年滨州医学院毕业,硕士,医师,主要从事人工关节无菌性松动发生机制和Ilizarov牵张成骨技术修复重建骨与软组织损伤研究。
  • 基金资助:

    国家自然科学基金(81241061),项目负责人:张锴;山东省医药卫生科技发展计划项目(2016WS0023),项目负责人:杨淑野

Influence of different wear particles on human peripheral blood mononuclear cells in vitro

Li Peng, Yang Shuye, Zhang Kai, Jia Long, Du Gangqiang, Liu Dong, Zhang Xinjun, Zhang Degang, Wang Zhigang   

  1. Department of Trauma Orthopedics, Binzhou Medical University Hospital, Binzhou 256600, Shandong Province, China
  • Received:2018-10-26 Online:2019-02-28 Published:2019-02-28
  • Contact: Zhang Kai, MD, Chief physician, Master’s supervisor, Department of Trauma Orthopedics, Binzhou Medical University Hospital, Binzhou 256600, Shandong Province, China
  • About author:Li Peng, Master, Physician, Department of Trauma Orthopedics, Binzhou Medical University Hospital, Binzhou 256600, Shandong Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81241061 (to ZK); Shandong Provincial Medical and Health Technology Development Project, No. 2016WS0023 (to YSY)

摘要:

文章快速阅读:

 

文题释义:
假体无菌性松动:临床常常表现为假体关节置换后出现肢体活动时疼痛伴有功能障碍,可排除感染性松动可能,往往需要翻修手术治疗。作为关节置换后中远期最常见最严重的并发症之一,其原因主要与假体各组件磨损产生的颗粒、机体免疫功能、生物力学、细胞因子、手术技术、假体设计理念和术后功能锻炼等多种因素有关。
磨损颗粒:假体关节置换后由于长期反复活动磨损产生的大小不一形态各异的颗粒统称为磨损颗粒。目前关节假体主要涉及到的生物材料主要有钛铝钒合金(Ti6Al4V)、铬钴合金(Co-Cr)、不锈钢(含Ni)等金属材料;超高分子聚乙烯(UHMWPE)、聚甲基丙烯酸甲酯(PMMA)等高分子有机材料;氧化铝(Al2O3)、氧化锆(ZrO2)等陶瓷材料,大量研究发现各种生物材料颗粒的体积、浓度、形态、生物学活性等因素与诱发无菌性松动反应存在着密切关系。
 
 
背景:人工关节置换后正常的行走活动会产生大量的钛铝钒合金(Titanium 6 Aluminium 4 Vanadium,Ti6Al4V)、聚甲基丙烯酸甲酯(Polymethylmethacrylate,PMMA)、超高分子量聚乙烯(Ultra-High-Molecular- Weight-Polyethylene,UHMWPE)、钴铬合金(Chromium-Cobalt Alloy,Co-Cr)等磨损颗粒,激活单核细胞释放大量的炎性细胞因子和趋化因子,诱发骨溶解和形成假性肉芽肿等一系列生物学级联反应,最终导致假体发生无菌性松动。
目的:探讨Ti6Al4V、PMMA、UHMWPE和Co-Cr颗粒对体外培养人外周血单核细胞分泌肿瘤坏死因子α、白细胞介素1和白细胞介素6的影响及诱导骨溶解引起无菌性松动的作用机制。
方法:将人外周血单核细胞分别与不同浓度的Ti6Al4V、PMMA、UHMWPE和Co-Cr颗粒进行共培养,72 h后提取细胞上清液,用ELISA法检测肿瘤坏死因子α、白细胞介素1和白细胞介素6的表达水平,观察各种颗粒浓度和理化性质对外周血单核细胞活性的影响。

结果与结论:①各组人外周血单核细胞存活率均大于95%,仅有Co-Cr组颗粒/细胞比值为1 000时单核细胞存活率降至87%;②当颗粒/细胞比值为10,100,1 000时,活化的单核细胞分泌肿瘤坏死因子α、白细胞介素1和白细胞介素6的水平与原始幼稚单核细胞(颗粒/细胞比值为0时)相比显著增高,差异有显著性意义(P < 0.05);③Ti6Al4V组、PMMA组和UHMWPE组中随颗粒浓度增加,单核细胞分泌肿瘤坏死因子α、白细胞介素1和白细胞介素6出现不同程度的增强。Co-Cr组中当颗粒/细胞比值达到1 000时却出现肿瘤坏死因子α、白细胞介素1和白细胞介素6的表达水平降低;④在骨溶解过程中Ti6Al4V颗粒的功能生物学活性最强,其次是Co-Cr和PMMA颗粒,UHMWPE颗粒最低弱;Ti6Al4V、PMMA、UHMWPE和Co-Cr颗粒在骨溶解过程中对外周血单核细胞的影响存在剂量依赖性。

ORCID: 0000-0002-3112-0473(张锴)

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程

关键词: 人工关节置换, 无菌性松动, 骨溶解, 磨损颗粒, 单核细胞, 细胞因子, 国家自然科学基金

Abstract:

BACKGROUND: After artificial joint replacement, daily activities lead to the production of a large number of titanium 6 aluminium 4 vanadium (Ti6Al4V), polymethylmethacrylate (PMMA), ultra-high-molecular-weight-polyethylene (UHMWPE) and chromium-cobalt alloy (Co-Cr) particles, activating monocytes to release a large number of inflammatory cytokines and chemokines, including a series of biological cascade reactions, such as inducing bone dissolution and forming pseudo-granuloma, and eventually leading to aseptic loosening of the prosthesis.

OBJECTIVE: To investigate the effect of Ti6Al4V, PMMA, UHMWPE and Co-Cr particles on tumor necrosis factor-α, interleukin-1 and interleukin-6 in the human peripheral blood monocytes cultured in vitro and to explore the underlying mechanism of aseptic loosening of the prosthesis by inducing bone dissolution.
METHODS: Human peripheral blood mononuclear cells were cultured with Ti6Al4V, PMMA, UHMWPE and Co-Cr particles at different concentrations. After 72 hours of culture, ELISA technique was utilized to quantify the secretion of different cytokines includes tumor necrosis factor-α, interleukin-1 and interleukin-6. We observed the influence of different wear particle concentrations and particle properties on the viability of human peripheral blood mononuclear cells.
RESULTS AND CONCLUSION: Cell viability exceeded 95% for all groups, except for 87% in the Co-Cr group when the particle/cell ratio was
1 000. Compared with the naive mononuclear cells (particle/cell ratio of 0), the expression of tumor necrosis factor-α, interleukin-1 and interleukin-6 in the activated mononuclear cells increased significantly when the particle/cell ratio was 10, 100 and 1 000 (P < 0.05). Ti6Al4V, PMMA and UHMWPE particles stimulated human mononuclear cells to overexpress tumor necrosis factor-α, interleukin-1 and interleukin-6, which were positively correlated with the concentration of particles. However, when the Co-Cr particle/cells ratio was 1 000, the expression levels of tumor necrosis factor-α, interleukin-1 and interleukin-6 were decreased. During the osteolysis reaction, Ti6Al4V particles had strongest biological activity, followed by Co-Cr and PMMA particles, and the biological activity of UHMWPE particles was lowest. Ti6Al4V, PMMA, UHMWPE and Co-Cr particles showed dose-dependent effects on the human peripheral blood mononuclear factors during the osteolysis.  

Key words: Arthroplasty, Replacement, Particulate Matter, Monocytes, Tumor Necrosis Factor-alpha, Interleukin-1, Interleukin-6, Tissue Engineering

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