界面仿生沉積修飾衍生骨支架的制備及生物學(xué)性能的研究
[Abstract]:Objective: bone transplantation is the most commonly used method for repairing maxillofacial bone defects in clinic. Xenogeneic bone (* bovine, sheep, pig and other mammals) has inorganic bone scaffold which is very similar to human bone structure and components. It has a wide range of sources and is a good natural raw material for the preparation of bone graft materials. Bio-derived bone scaffolds with inorganic components can be prepared by removing antigens in the same way. This scaffold is a promising bone graft material. However, hydroxyapatite is the main component in the scaffolds after removing antigens, which is stable in nature and difficult to be degraded, and can not provide sufficient formation in the early stage of implantation. In order to obtain better osteogenic activity, it is necessary to modify the surface of the scaffolds. At present, there are many methods to modify the surface of the scaffolds. Most of the methods are complicated and the conditions are harsh. Methods: 1. The antigen-derived bone scaffolds were prepared by soaking the cancellous bone of yak in methanol/chloroform mixture, 30% hydrogen peroxide solution and calcining at 900 C for 2 hours. The structures and compositions of the scaffolds were characterized by SEM, XRD and FTIR. Immersion in simulated body fluid at 7 C for 2 times, surface modification by biomimetic deposition, SEM, XRD and FTIR were used to characterize the structure and composition of the material after immersion for 1 week, 3 weeks and 5 weeks respectively. 3. MC3T3-E1 cell line was induced in vitro and osteoblasts were obtained. The osteoblasts were co-cultured with various groups of materials to observe the early stage of osteoblasts on the surface of the material. Adhesion, spreading and proliferation were studied to study the activity of osteoblast alkaline phosphatase on the surface of the material, and to analyze the early osteogenic properties of the material after different surface modification. Results: 1. The antigenic components of xenogeneic bone were completely removed by chemical-physical combination method, and the bone scaffold material was obtained. Its internal structure was porous and its composition was characterized as hydroxyl. Matrix apatite. 2. After biomimetic deposition, mineralized sediments were formed on the surface of the derived bone scaffolds. With the extension of immersion time, the sediments increased gradually. At 5 weeks of biomimetic deposition, the sediment coverage was the largest and the sediment distribution was the most uniform. Comparing with bone scaffolds without biomimetic deposition, osteoblasts adhered and proliferated more on the surface of biomimetic deposition modified materials, and the expression of alkaline phosphatase activity of osteoblasts was stronger. The osteoblasts spread well on the surface of materials, and the pseudopodia extends fully around the material. Bone scaffolds can be prepared by chemical and physical methods. After 2 times biomimetic humoral deposition, bone-like apatite can be deposited on the surface of the material. After 5 weeks of immersion and deposition, the derived bone scaffolds can promote the early adhesion, spreading and proliferation of osteoblasts on the surface of the material, and the function of the cells is good.
【學(xué)位授予單位】:北華大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:R318.08
【相似文獻】
相關(guān)期刊論文 前10條
1 徐健斌;劉云峰;姜獻峰;;單軸壓縮載荷下骨支架的降解模型研究[J];科技通報;2012年07期
2 尤飛;胡慶夕;朱曉錦;;再生骨支架內(nèi)部結(jié)構(gòu)性能的綜合評價[J];中國機械工程;2013年20期
3 郝青坡;;微型三維萬向外用骨支架治療嬰幼兒先天性馬蹄內(nèi)翻足[J];臨床骨科雜志;2011年02期
4 方榮柳;藺雙鳳;黃占春;楊豐寅;安允祥;郝衛(wèi)峰;;下頜骨部分截除塑膠骨支架立即植入術(shù)[J];山西醫(yī)學(xué)雜志;1964年02期
5 雷榮昌;翦新春;;松質(zhì)骨支架的制備及結(jié)構(gòu)特征觀察[J];生物醫(yī)學(xué)工程與臨床;2006年03期
6 雷榮昌;翦新春;;異種松質(zhì)骨支架體內(nèi)移植免疫的實驗研究[J];現(xiàn)代免疫學(xué);2007年05期
7 潘輝;張春秋;郭勇;武漢;;三種不同骨支架材料力學(xué)性能對比的研究[J];中國醫(yī)藥導(dǎo)報;2010年32期
8 郭大剛;徐可為;;快速成型模板調(diào)制雙相摻鍶磷酸鈣陶瓷骨支架的結(jié)構(gòu)與性能[J];稀有金屬材料與工程;2010年S1期
9 張玉勤;;植入可擴展的金屬肋骨支架[J];國外醫(yī)學(xué)情報;1989年18期
10 田杰謨;董利民;王晨;王賢剛;昝青峰;張朝宗;郭志平;盧世璧;彭江;汪愛媛;孫明學(xué);;組織工程化三維仿骨支架重建股骨頭壞死區(qū)研究[J];稀有金屬材料與工程;2009年S2期
相關(guān)會議論文 前3條
1 姚遠;俞永偉;王家偉;郭俊;錢懿;;有限元分析在骨支架設(shè)計中的應(yīng)用[A];第五屆中國CAE工程分析技術(shù)年會論文集[C];2009年
2 王昊;柏樹令;;脫細胞處理骨支架的形態(tài)學(xué)觀察[A];解剖學(xué)雜志——中國解剖學(xué)會2002年年會文摘匯編[C];2002年
3 崔勝杰;王向輝;高明;高晉;張寶安;陳新建;李鵬超;;單臂萬向骨支架加壓復(fù)合植骨在治療脛骨骨不連中的臨床應(yīng)用[A];第五次全國中西醫(yī)結(jié)合骨傷科學(xué)術(shù)交流暨中國中西醫(yī)結(jié)合學(xué)會骨傷科專業(yè)委員會換屆大會文集[C];2000年
相關(guān)博士學(xué)位論文 前4條
1 李坤;基于三維打印技術(shù)的載藥抗結(jié)核骨支架的構(gòu)建與特性研究[D];第二軍醫(yī)大學(xué);2016年
2 張憲濱;體外培養(yǎng)條件下骨支架形態(tài)對細胞生物力學(xué)環(huán)境影響的數(shù)值仿真研究[D];吉林大學(xué);2016年
3 王加旭;基于同軸電紡技術(shù)的rFN/CDH仿生支架體外促MSC成骨分化的實驗研究[D];第三軍醫(yī)大學(xué);2014年
4 雷榮昌;異種松質(zhì)骨支架構(gòu)建組織工程骨實驗研究[D];中南大學(xué);2006年
相關(guān)碩士學(xué)位論文 前10條
1 陶世剛;蜂窩多孔鈣磷鹽骨支架的制備及其性能研究[D];昆明理工大學(xué);2015年
2 李欣培;3DP成形人工骨多孔支架研究[D];西北工業(yè)大學(xué);2015年
3 余慧冉;界面仿生沉積修飾衍生骨支架的制備及生物學(xué)性能的研究[D];北華大學(xué);2017年
4 徐健斌;模擬體內(nèi)應(yīng)力作用的骨支架降解和骨重建仿真研究[D];浙江工業(yè)大學(xué);2012年
5 弓家弘;新型載藥納米骨支架的研制與體外實驗[D];揚州大學(xué);2011年
6 齊艷梅;人工股骨支架的計算機輔助仿生設(shè)計與優(yōu)化[D];陜西科技大學(xué);2013年
7 龔蘭云;骨支架力學(xué)模型的研究[D];湖南科技大學(xué);2010年
8 馮佩;磷酸鈣陶瓷骨支架的激光燒結(jié)機理及工藝研究[D];中南大學(xué);2013年
9 張承e,
本文編號:2215781
本文鏈接:http://sikaile.net/yixuelunwen/swyx/2215781.html