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  5. 新型硫酸鈣/絲蛋白骨水泥應用於骨再生
 
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新型硫酸鈣/絲蛋白骨水泥應用於骨再生

Other Title
A novel calcium sulfate/silk fibroin bone cement for bone regeneration
Type
thesis
Date Issued
2012-06-26
Author(s)
鄭淑蓮
Advisor
蔡翠敏
Subjects
系所名稱:生醫材料暨工程研究所
Publisher
生醫材料暨工程研究所
Description
學位別:碩士
語文別:中文
指導教授:蔡翠敏
共同指導教授:
口試委員:楊正昌;邱方遒
中文關鍵字:硫酸鈣;絲蛋白;骨水泥
Abstract
本研究之目的以精簡方法製備新型硫酸鈣/絲蛋白複合式材料,首先以三相溶劑(CaCl2.2H2O /C2H5OH/H2O)將已脫膠之蠶絲溶解,利用溶劑中所含氯化鈣作為鈣原與硫酸二鈉反應製備硫酸鈣/絲蛋白複合材並與水調拌形成骨水泥,評估應用於骨缺損之可行性。硫酸鈣/絲蛋白複合式材料分別應用廣角X光繞射儀、熱示差掃描卡量計、傅立葉紅外線光譜儀及掃描式電子顯微鏡分析其複合材,廣角X光繞射儀鑑定硫酸鈣結晶水含量、熱示差掃描卡量計鑑定半水硫酸鈣為α及β 類型及觀察絲蛋白玻璃轉化溫度、傅立葉紅外線光譜儀鑑定硫酸鈣結晶水含量並以Peakfit○R軟體分析絲蛋白二級結構Silk I(Random Coil)與Silk II(β-Pleated Crystal)變化,FTIR特徵峰1,628及1,665分別表徵為絲蛋白二級結構β-Pleated Crystal與Random Coil,其兩者比值為結晶度Crystallinity Index(CI),(CI=A1,628/A1,665),掃描式電子顯微鏡進行形態觀察。硫酸鈣/絲蛋白複合材與水調拌形成骨水泥待固化後,使用材料試驗機(LF plus)量測其機械強度並且將材料萃取液與類骨母細胞(MC3T3-E1)共同培養1及3天,觀察其生物相容性及細胞生長情況。實驗結果經由廣角X光繞射儀分析硫酸鈣/絲蛋白複合材,顯示含有絲蛋白的存在可影響硫酸鈣的類型,使硫酸鈣轉變成為半水硫酸鈣;熱示差掃描卡量計可觀察硫酸鈣/絲蛋白複合材料彼此之間之交互作用,隨著硫酸鈣的含量增加,硫酸鈣之吸熱峰溫度有逐漸升高趨勢;此外隨著絲蛋白含量降低,玻璃轉化溫度有逐漸升高的趨勢;傅立葉紅外光譜結果含有硫酸鈣其絲蛋白的Crystallinity Index皆高於不含硫酸鈣組別,其中以重量比50/50組別有較高的Crystallinity Index;電子顯微鏡觀察硫酸鈣/絲蛋白複合材則觀察到不同於β-form半水硫酸鈣之微結晶結構,本製程所產生的硫酸鈣形態柱狀。在機械物性,可觀察到硫酸鈣/絲蛋白骨水泥80/20機械物性7.83 MPa高於100/0機械物性3.24 MPa。此外硫酸鈣/絲蛋白之生物相容性測試90/10及50/50之生物相容性高於100/0的組別,具有統計上的差異p value < 0.05;硫酸鈣/絲蛋白第3天之細胞生長情況, 90/10及50/50此二組,加入絲蛋白至硫酸鈣系統中,具有較佳之細胞生長。
URI
https://203.71.86.71/handle/123456789/10973

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