O‐phospho‐L‐serine modified calcium phosphate cements – material properties, in vitro and in vivo investigations

O‐phospho‐L‐serine modified calcium phosphate cements – material properties, in vitro and in vivo investigations
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OâphosphoâLâserine 改性磷酸钙骨水泥 â 材料特性、体外和体内研究

DOI:
10.1002/mawe.200600026
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发表时间:
2006
影响因子:
1.1
通讯作者:
W. Pompe
W. Pompe
中科院分区:
材料科学4区
文献类型:
--
作者:
A. Reinstorf;U. Hempel;F. Olgemöller;H. Domaschke;W. Schneiders;R. Mai;B. Stadlinger;A. Rösen-Wolff;S. Rammelt;M. Gelinsky;W. Pompe

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磷酸钙骨水泥(CPBC)最重要的要求之一是在体内重塑,人工材料的降解和天然新骨基质的形成必须相互交错以避免不稳定。改造过程不应超过一年。在这项研究中,用O-磷酸-L-丝氨酸(磷酸丝氨酸)修饰CPBC以改善材料性质,从而加速体内重塑。结果表明,改性水泥表现出纳米晶体微观结构,具有高比表面积和增加的抗压强度(约50%)。 改性材料上成骨细胞的代谢活性得到提高。单核细胞被发现是高度活化的水泥含有磷酸丝氨酸。此外,磷酸丝氨酸改性骨水泥复合材料上的多核巨细胞(破骨细胞样细胞)的形成没有受到影响。Wistar大鼠和小型猪体内实验清楚地表明,与不含磷酸丝氨酸的骨水泥相比,磷酸丝氨酸改性骨水泥显示出更高的重塑能力。
One of the most important requirements for calcium phosphate bone cements (CPBC) is remodellingin vivo.Degradation of the artificial material and the formation of native new bone matrix have to interdigitate to avoid instability. The remodelling process should not last longer than one year. In this study a CPBC was modified withO‐phospho‐L‐serine (phosphoserine) to improve the material properties in order to speed up remodellingin vivo. The results showed that the modified cements exhibit a nano‐crystalline microstructure with a high specific surface area and increased compressive strength (about 50 %). Metabolic activity of osteoblasts was improved on the modified material. Monocytes were found to be highly activated on the cements containing phosphoserine. In addition the formation of multinucleated giant cells (osteoclast‐like cells) was not impaired on phosphoserine modified cement composites.In vivoexperiments in Wistar rats and mini pigs clearly revealed that phosphoserine modified cements showed a higher capability of remodelling compared to the cements without phosphoserine.
Schnell abbindender Kalziumphosphatzement for die kraniomaxillofaziale Chirurgie
DOI: --
发表时间: 2004
期刊: Mund-, Kiefer- und Gesichtschirurgie
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期刊: Der Chirurg
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期刊: Der Unfallchirurg
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