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首页> 外文期刊>Biomaterials >Importance of the surface area ratio on cytokines production by human monocytes in vitro induced by various hydroxyapatite particles.
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Importance of the surface area ratio on cytokines production by human monocytes in vitro induced by various hydroxyapatite particles.

机译:表面积比对各种羟基磷灰石颗粒诱导的人单核细胞体外细胞因子产生的重要性。

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摘要

A possible complication associated with the implantation of hydroxyapatite (HA)-based prosthesis is the release of particles. Those particles can be phagocyted by monocytes that are among the first cells to colonize the inflammatory site. The activated monocytes produce inflammatory mediators, such as cytokines, which cause osteoclasts activation. It has previously been demonstrated using a surface area ratio (ratio of the total surface of the given particles to the surface area of cells) of 1 to 1 that there was a correlation between the expression and production of cytokines induced by HA. The present work studies the effect of physical characteristics of HA particles on the production of various inflammatory cytokines (tumour necrosis factor-alpha, interleukin (IL)-6, and IL-8) and anti-inflammatory cytokine (IL-10). However, the experiments were performed using a surface area ratio of 10 to 1. Our data demonstrate that all the particles, whatever their characteristics, induced a high expression of cytokines but the production was different, meaning that there was a post-transcriptional regulation. The size and sintering temperature seemed to be a characteristics that were less important compared to the shape; the needle particles appeared to induce the most important production of all the cytokines studied.
机译:与基于羟基磷灰石(HA)的假体植入相关的可能并发症是颗粒的释放。这些颗粒可以被第一批细胞中的单核细胞吞噬,以定居炎症部位。活化的单核细胞产生炎症介质,例如细胞因子,导致破骨细胞活化。先前已经证明,使用表面积比(给定颗粒的总表面积与细胞表面积的比)为1:1,可以证明由HA诱导的细胞因子的表达和产生之间存在相关性。本工作研究了HA颗粒的物理特性对各种炎性细胞因子(肿瘤坏死因子-α,白介素(IL)-6和IL-8)和抗炎细胞因子(IL-10)产生的影响。但是,实验是使用10:1的表面积比率进行的。我们的数据表明,所有颗粒,无论其特征如何,都诱导细胞因子的高表达,但产生方式却不同,这意味着存在转录后调控。与形状相比,尺寸和烧结温度似乎不那么重要。针状颗粒似乎是所有研究的细胞因子中最重要的产物。

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