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对宏观纹理植入物的亲炎性反应是磨损碎片

Dixon J Atkins¹, Ann E Rogers², Kathryn E Shaffer³

¹Interdisciplinary Program in Quantitative Biosciences, University of California, Santa Barbara, Santa Barbara, CA 93106, USA.

Tribology letters

|August 1, 2025

概括

纹理乳房植入物中的磨损碎片可能会引起炎症. 这项研究发现,宏观纹理表面释放出更多的颗粒,可能增加像BIA-ALCL.这样的健康风险.

科学领域:

生物材料科学生物材料科学
部落学 (tribology) 是一个学科.
免疫学免疫学免疫学

背景情况:

宏观结构乳房植入物与并发症有关,包括乳房植入物相关的性大细胞淋巴瘤 (BIA-ALCL).
在植入物周围发现磨损碎片,被炎症细胞包围,但其生成机制尚不清楚.
植入物刚性和磨损碎片生成之间的关系需要进一步研究.

研究的目的:

用加速衰老模型研究从宏观纹理植入物表面形成的磨损碎片的形成.
探索不同硬度的弹性体的三元学相互作用.
为了评估巨细胞对产生的磨损碎片的炎症反应.

主要方法:

创建了具有不同刚度比的植入式聚甲基素 (PDMS) 弹性体 (10:1, 12:1, 16:1).
使用迷失盐技术制造的宏观纹理PDMS样品和召回的阿勒根生物细胞植入体外.
量化机械性能,自我配对的摩擦系数和摩擦剪切应力;分析了磨损碎片的生成和颗粒特征;暴露了骨髓衍生巨细胞 (BMDMs) 磨损碎片.

主要成果:

摩擦和剪切应力在PDMS样品和召回的植入物外中是相似的,基本上对弹性模量不敏感.
最硬的PDMS样品和被召回的植入物外产生了可比的磨损碎片面积分数.
被召回的植入物外释放的颗粒数量明显高于PDMS样品 (>10倍),主要在5-20μm2大小范围内.
BMDMs 呈现出广泛的磨损碎片的细胞分裂和炎症性细胞因子分泌的增加,而碎片度更高.

结论:

宏观纹理的表面,如召回的植入物外,比光滑的表面释放出明显更多的磨损碎片颗粒.
磨损碎片的生成和炎症潜力凸显了表面纹理在植入物安全中的重要性.
通过避免宏观纹理表面来减轻磨损碎片的产生,可以减少慢性炎症和相关风险,如BIA-ALCL.

关键词:

生物三角学生物三角学乳房植入物可以进行植入.摩擦摩擦是一种摩擦.炎症炎症是一种炎症.巨细胞是什么?巨细胞是什么?类弹性体的类弹性体.

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