天堂国产午夜亚洲专区-少妇人妻综合久久蜜臀-国产成人户外露出视频在线-国产91传媒一区二区三区

含納米硅鈦表面促進骨整合及其機理的實驗研究

發(fā)布時間:2018-08-21 09:33
【摘要】:第一部分納米鈦表面促進骨髓間充質干細胞的粘附和增殖的研究 [摘要]目的探討納米顆粒鈦表面對大鼠骨髓間充質干細胞(MSCs)粘附和增殖的作用及機制。方法第3代的MSCs分別接種于納米鈦表面和純鈦表面對照培養(yǎng)32小時。分別通過掃描電子顯微鏡(SEM)和MTT法觀測細胞形態(tài)和存活數(shù),通過免疫組化檢測粘附的骨髓間充質干細胞的有絲分裂率,應用實時聚合酶鏈反應(實時PCR),以確定粘附相關的,CD44V6和Integrinβ1信使核糖核酸(mRNA)的表達變化。結果培養(yǎng)4小時后,干細胞在納米鈦表面比純鈦表面更快鋪展,并于16小時后更早地融合。而且,初始接種16個小時后,納米鈦表面細胞的增殖活性比純鈦表面顯著增加(P0.01),32小時后,納米鈦表面粘附的間充質干細胞的有絲分裂率也高于純鈦表面(P0.01)。更有趣的是,接種4小時后,納米鈦表面組CD44V6和Integrinβ1的mRNA表達高于純鈦表面組(P0.01),通過統(tǒng)計分析發(fā)現(xiàn)CD44V6和Integrinβ1的mRNA表達呈正相關(rs=0.98,P0.01)。結論納米鈦表面可以顯著地促進大鼠骨髓間充質干細胞的粘附和增殖,提高鈦表面活性。 第二部分含納米硅鈦表面促進大鼠骨髓間充質干細胞成骨分化的研究 [摘要]目的探討含納米硅(Si)鈦表面對大鼠骨髓間充質干細胞(MSCs)成骨分化的影響及初步探討可能的機制。方法第3代骨髓間充質干細胞分別培養(yǎng)于純鈦表面和含納米硅鈦表面12天。Cell Counting Kit-8試劑盒檢測細胞數(shù),熒光顯微鏡和Western印跡檢測細胞增殖和向成骨細胞分化的細胞活力。茜素紅S染色和定量測定分析含納米硅鈦表面對間充質干細胞的鈣鹽礦化沉積的影響。結果含納米硅鈦表面培養(yǎng)的間充質干細胞的增殖較純鈦表面強(P0.05)。納米硅鈦表面的間充質干細胞的堿性磷酸酶分泌,I型膠原和骨鈣素表達和鈣鹽礦化沉積量均較純鈦表面增多(P0.05)。結論含納米硅鈦表面能促進大鼠骨髓間充質干細胞成骨分化,推測采用納米硅涂層技術對醫(yī)用鈦假體表面進行改性,有利于促進骨整合。 第三部分大鼠人工膝關節(jié)置換模型的建立 [摘要]目的設計并制作一個鈦金屬非骨水泥型大鼠膝關節(jié)置換手術,探討建立大鼠人工膝關節(jié)置換模型的可行性。方法將21只體重300~325克的SD大鼠隨機分為關節(jié)置換組、假手術組和無功能組,每組7只。每組動物均行手術處理。關節(jié)置換組大鼠行股骨髁間植入鈦螺絲釘假體后分層縫合;假手術組只經(jīng)右膝髕腱內側暴露股骨關節(jié)面后分層縫合;無功能組經(jīng)右膝髕腱內側暴露股骨遠端,切除膝半月板、前交叉韌帶、內、外側副韌帶,切斷髕腱后分層縫合。然后評估術后4周內大鼠疼痛相關的飲食和行走站立行為,檢查右膝關節(jié)活動度,X線片檢查膝關節(jié)病變情況。所有數(shù)值用平均值±標準差表示。采用SPSS12.0軟件包對各組實驗數(shù)據(jù)進行t檢驗或方差分析并進行多重比較。P0.05表示差異有統(tǒng)計學意義。結果術后4周內關節(jié)置換組與假手術組之間的飲食量和行走站立指數(shù)差異無統(tǒng)計學意義,于術后1周開始這兩組站立指數(shù)優(yōu)于無功能組(P0.05)。術后各組膝關節(jié)被動活動度均良好,各組之間差異無統(tǒng)計學意義。X線片顯示關節(jié)置換組假體位置良好,周圍無骨溶解現(xiàn)象。結論本實驗設計的大鼠人工膝關節(jié)置換模型操作簡單,術后活動功能好,,可用于模擬臨床人工膝關節(jié)置換術的實驗研究。 第四部分含納米硅鈦假體在大鼠膝關節(jié)置換模型中的機械穩(wěn)定性和骨整合的研究 [摘要]目的探討鈦和含納米硅鈦假體材料,植入到大鼠膝關節(jié)置換模型中,承重下的機械穩(wěn)定性和骨整合情況。方法分別將鈦和含納米硅鈦假體植入大鼠膝關節(jié)中,術后第3天開始每周給術側膝關節(jié)腔內注射超高分子量聚乙烯(UHMW-PE)微顆粒,1個月后處死動物。術后每周在X線片上觀察假體位置和周圍骨質變化情況。用拔釘試驗評估假體機械穩(wěn)定性。Micro-CT(微型CT)掃描重建股骨遠端骨質。顯微組織病理學檢測假體周圍骨、軟骨生長變化和無菌性炎癥反應。采用SPSS12.0軟件包對各組實驗數(shù)據(jù)進行t檢驗或方差分析并進行多重比較,P0.05表示差異有統(tǒng)計學意義。結果鈦和含納米硅鈦假體均無下沉,兩組假體均機械穩(wěn)定,無松動。但是,含納米硅組假體骨界面的骨整合增強,螺絲釘最大抗拔出力較鈦骨溶解誘導組增大(P0.05)。含納米硅組假體周圍新骨形成較鈦骨溶解誘導組增多,假體周圍成骨細胞增殖增多,無明顯炎癥細胞浸潤。結論大鼠膝關節(jié)置換模型中,含納米硅鈦表面比鈦表面更有利于骨整合,可減輕聚乙烯微顆粒誘導的無菌性炎癥反應。當利用生物型假體置換關節(jié)時,本文為推薦使用含納米硅表面改性的鈦金屬假體打下基礎。
[Abstract]:The first part is to study the adhesion and proliferation of bone marrow mesenchymal stem cells promoted by nano titanium surface.
[ABSTRACT] Objective To investigate the effect and mechanism of titanium nanoparticles on the adhesion and proliferation of rat bone marrow mesenchymal stem cells (MSCs). Methods The 3rd generation MSCs were inoculated on the surface of titanium nanoparticles and cultured on the surface of pure titanium for 32 hours. The mitotic rate of adherent BMSCs was measured. Real-time polymerase chain reaction (real-time PCR) was used to determine the expression of adhesion-related, CD44V6 and Integrin beta 1 messenger ribonucleic acid (mRNA). After 16 hours of inoculation, the proliferation activity of mesenchymal stem cells on the surface of nano-titanium was significantly higher than that on the surface of pure titanium (P 0.01). After 32 hours, the mitotic rate of mesenchymal stem cells adhered to the surface of nano-titanium was also higher than that on the surface of pure titanium (P 0.01). In the face group (P 0.01), the expression of CD44V6 and Integrin beta 1 mRNA was positively correlated (rs=0.98, P 0.01). Conclusion Nano-titanium surface can significantly promote the adhesion and proliferation of rat bone marrow mesenchymal stem cells and enhance the surface activity of titanium.
The second part of the study is to promote the osteogenic differentiation of rat bone marrow mesenchymal stem cells with nano-si-ti surface.
[Abstract] Objective To investigate the effect of titanium containing nano-silicon (Si) on osteogenic differentiation of rat bone marrow mesenchymal stem cells (MSCs). Methods The 3rd generation MSCs were cultured on pure titanium and titanium containing nano-silicon for 12 days, respectively. Alizarin red S staining and quantitative analysis of the effect of nano-silica-titanium surface on calcium mineralization of mesenchymal stem cells. Results The proliferation of mesenchymal stem cells cultured on the surface of nano-silica-titanium was stronger than that on the surface of pure titanium (P 0.05). The secretion of alkaline phosphatase, the expression of collagen type I and osteocalcin, and the deposit of calcium mineralization were all increased (P 0.05) compared with pure titanium surface.
The third part is the establishment of artificial knee replacement model in rats.
[ABSTRACT] Objective To design and fabricate a titanium cementless knee replacement operation in rats and explore the feasibility of establishing a rat model of artificial knee replacement.Methods 21 SD rats weighing 300-325 grams were randomly divided into joint replacement group, sham operation group and non-function group with 7 rats in each group. Titanium screw prosthesis was implanted in the femoral condyle of rats and then sutured in different layers; sham operation group only exposed the femoral articular surface through the medial patellar tendon of the right knee; nonfunction group exposed the distal femur through the medial patellar tendon of the right knee, resected the knee meniscus, anterior cruciate ligament, medial and lateral collateral ligament, cut the patellar tendon and sutured in different layers. Pain-related behaviors of diet and walking, right knee movement and X-ray examination of knee joint lesions were performed in rats. There was no significant difference in dietary intake and walking and standing index between the two groups within a week. The standing index of the two groups was superior to that of the non-functional group (P 0.05) from 1 week after operation. Conclusion The model of knee arthroplasty in rats can be used to simulate the experimental study of clinical knee arthroplasty.
Part IV Mechanical stability and osseointegration of nano-silicon-titanium prosthesis in rat knee joint replacement model
[ABSTRACT] Objective To investigate the mechanical stability and osseointegration of titanium and nano-silicon-titanium prosthesis implanted into the knee joint replacement model of rats.Methods Titanium and nano-silicon-titanium prosthesis were implanted into the knee joint of rats respectively.UHMW-PE was injected into the knee joint cavity weekly from the third day after operation. Granules, one month later, were sacrificed. The position of the prosthesis and the changes of surrounding bone were observed on X-ray every week after surgery. The mechanical stability of the prosthesis was evaluated by nail pulling test. The distal femoral bone was reconstructed by micro-CT scanning. The bone around the prosthesis, cartilage growth and aseptic inflammation were examined by histopathology. SPSS12.0 software was used. Results Titanium and nano-silicon-titanium prostheses did not sink, and the prostheses in both groups were mechanically stable without loosening. The formation of new bone around the prosthesis in the group containing nano-silicon was more than that in the group induced by titanium osteolysis, and the proliferation of osteoblasts around the prosthesis was increased without obvious inflammatory cell infiltration. This article will lay a foundation for recommending the use of titanium metal prostheses containing nano-silicon surface modification when using biological prostheses to replace joints.
【學位授予單位】:蘇州大學
【學位級別】:博士
【學位授予年份】:2012
【分類號】:R329

【共引文獻】

相關期刊論文 前10條

1 冉旭;李洋;冉均國;蘇葆輝;陳繼鏞;羅教明;張興棟;;摻鍶碳酸化羥基磷灰石多孔陶瓷溶解性能及溶解動力學的研究[J];稀有金屬材料與工程;2009年S2期

2 張志宏;沈舜義;;骨質疏松新藥雷奈酸鍶研究進展[J];世界臨床藥物;2011年11期

3 郭世紱;治療骨質疏松促進骨形成藥物[J];中國骨腫瘤骨病;2003年02期

4 覃超;彭建強;;抗骨質疏松藥雷奈酸鍶研究進展[J];當代醫(yī)學;2013年18期

5 崔冬冰;何志旭;李永念;舒莉萍;王黎龍;;人羊膜間充質干細胞的分離與鑒定[J];貴陽醫(yī)學院學報;2014年01期

6 唐春暉;唐旭東;賴鐵鷹;;LIM礦化蛋白-1與LIM礦化蛋白-3共轉染骨髓間充質干細胞的基因表達[J];華西醫(yī)學;2011年09期

7 ;Biomimetic synthesis of calcium-strontium apatite hollow nanospheres[J];Science China(Chemistry);2010年08期

8 王偉;趙建華;;鍶對人骨髓間充質干細胞增殖和成骨分化的影響[J];解放軍醫(yī)學雜志;2010年04期

9 鄭建洪;黃紅萍;;抗骨質疏松新藥——雷尼酸鍶[J];海峽藥學;2014年02期

10 丁悅;傅光濤;;人工關節(jié)遠期無菌性松動與原發(fā)性骨質疏松癥[J];嶺南現(xiàn)代臨床外科;2014年02期

相關博士學位論文 前10條

1 韓瑋;移植胰島細胞和骨髓單個核細胞治療糖尿病實驗研究[D];新疆醫(yī)科大學;2010年

2 田發(fā)明;辛伐他汀對大鼠骨質疏松性骨折及BMSCs成骨分化的影響[D];河北醫(yī)科大學;2011年

3 王友法;生物醫(yī)用磷灰石納米粒子的控制合成、表征及其溶膠穩(wěn)定性研究[D];武漢理工大學;2005年

4 蔣曄;抗骨質疏松藥物的開發(fā)與質量控制[D];河北醫(yī)科大學;2006年

5 李程;骨靶向抗骨質疏松藥物[D];四川大學;2007年

6 賈健;摻鍶硫酸鈣復合骨修復材料的體外實驗研究[D];四川大學;2007年

7 劉水冰;重組人骨形成蛋白-2治療小鼠急性造血損傷的機制研究[D];第四軍醫(yī)大學;2008年

8 朱耀豐;1. 兔骨髓間充質干細胞對VX2膀胱腫瘤生長及間質重構的影響 2. 鈥激光治療非肌層浸潤性膀胱腫瘤的療效與安全性評價[D];山東大學;2009年

9 郭會芳;新型促骨形成抗骨質疏松藥物的合成與活性研究以及戊二酰亞胺抗生素結構改造與抗病毒活性研究[D];中國協(xié)和醫(yī)科大學;2009年

10 陳燁;間充質干細胞跨越分化肝細胞及其參與肝臟損傷修復的探索研究[D];浙江大學;2009年

相關碩士學位論文 前10條

1 王玉路;兔骨髓間充質干細胞片(MSCs)包裹新型rhBMP-2-硫酸鈣支架修復兔大段尺骨缺損的實驗研究[D];浙江大學;2011年

2 焦明潔;電化學方法在金屬鈦表面沉積摻鎂/摻鍶羥基磷灰石涂層[D];浙江大學;2011年

3 徐靜;Wistar大鼠骨髓間充質干細胞的分離、培養(yǎng)及鑒定[D];吉林大學;2011年

4 方彩萍;可注射鎂基磷酸鈣水泥的研究[D];武漢理工大學;2011年

5 陳茜;HAMSC分化過程的生物力學特性及納米金對血管生成抑制作用的研究[D];暨南大學;2011年

6 任宇;山羊脂肪間充質干細胞的體外分離培養(yǎng)與定向分化[D];內蒙古大學;2011年

7 房德玉;雷尼酸鍶對局部肌麻痹大鼠的骨量丟失及微結構退變的影響[D];中南大學;2011年

8 潘麗;HSV-1感染大鼠骨髓間充質干細胞及形成潛伏感染的初步研究[D];天津醫(yī)科大學;2008年

9 趙亞洲;醫(yī)用透明質酸鈉凝膠應用于TKA術后防粘連的臨床觀察[D];山東大學;2011年

10 劉傳江;骨髓間充質干細胞在治療大鼠慢性胰腺炎中的作用[D];山東大學;2011年



本文編號:2195298

資料下載
論文發(fā)表

本文鏈接:http://sikaile.net/xiyixuelunwen/2195298.html


Copyright(c)文論論文網(wǎng)All Rights Reserved | 網(wǎng)站地圖 |

版權申明:資料由用戶78ea1***提供,本站僅收錄摘要或目錄,作者需要刪除請E-mail郵箱bigeng88@qq.com