In vivo murine model of continuous intramedullary infusion of particles--a preliminary study.

In vivo murine model of continuous intramedullary infusion of particles--a preliminary study.
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DOI:
10.1002/jbm.b.31175
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发表时间:
2009-01
影响因子:
3.4
通讯作者:
Goodman, Stuart B.
Goodman, Stuart B.
中科院分区:
工程技术3区
文献类型:
--
作者:
Ma, Ting;Ortiz, Steven G.;Huang, Zhinong;Ren, Peigen;Smith, R. Lane;Goodman, Stuart B.

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磨损碎片的持续产生影响全关节置换术(TJRs)的初始骨整合和随后的骨重塑。然而,使用一种可行的、经济有效的、定量的动物模型来模拟人类的情况,持续递送临床相关的颗粒,对骨科研究人员来说一直是一个挑战。在这项研究中,我们成功地使用渗透泵将蓝色染色聚苯乙烯颗粒注入小鼠股骨的髓内空间四周,这种颗粒的大小与人类的磨损碎片相似。大约40%的原始颗粒负荷(85 ul)被传递到髓内空间,估计为3 × 10 9个颗粒。颗粒携带的可见蓝色染料证实了交付。该模型表明,将颗粒连续注入小鼠骨-植入物界面是可能的。使用这种新的动物模型可以研究与磨损碎片颗粒相关的体内生物过程。
Continued production of wear debris affects both initial osseointegration and subsequent bone remodeling of total joint replacements (TJRs). However, continuous delivery of clinically relevant particles using a viable, cost effective, quantitative animal model to simulate the scenario in humans has been a challenge for orthopaedic researchers. In this study, we successfully infused blue-dyed polystyrene particles, similar in size to wear debris in humans, to the intramedullary space of the mouse femur for four weeks using an osmotic pump. Approximately 40% of the original particle load (85 ul) was delivered into the intramedullary space, an estimate of 3 × 10 9 particles. The visible blue dye carried by the particles confirmed the delivery. This model demonstrated that continuous infusion of particles to the murine bone-implant interface is possible. In vivo biological processes associated using wear debris particles can be studied using this new animal model.
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