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载双组分药物磷酸钙骨水泥的性质和体外释放

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Abstract:

为了研究载双组分药物磷酸钙骨水泥(calciumphosphatecement,CPC)的性质和药物释放行为,以对乙酰氨基酚和氯霉素为药物模型,制备载双组分药物的CPC。用Gilmore双针法、X射线衍射、红外光谱分析以及紫外-可见分光光度计等研究双组分药物对CPC的凝固时间和相成分的影响以及其药物释放行为。结果表明药物的载入延长CPC的凝固时间;延迟CPC向羟基磷灰石转化,但不会改变其终产物的成分;两种药物可以独立释放,但双组分组的释药速率低于单组分组的,释放均基本吻合Higuchi扩散释放模型。

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