アブストラクト(24巻2号:神奈川歯学)

神奈川歯学

Japanese

Title : 生体材料によるヒト血清たんぱく吸着に関する研究
Subtitle : 原著
Authors : 赤城公徳, 斎藤滋
Authors(kana) :
Organization : 神奈川歯科大学口腔生化学教室
Journal : 神奈川歯学
Volume : 24
Number : 2
Page : 345-357
Year/Month : 1989 / 9
Article : 原著
Publisher : 神奈川歯科大学学会
Abstract : 「緒言」合成ハイドロキシアパタイトは, 骨親和性にきわめて優れた材料であることが, 明らかにされて以来, 培養細胞による毒性試験, 動物実験による骨親和性および, 各種歯科材料や医療材料への応用, 人工骨や人工歯根材料としての応用研究が行われている. これらの研究で, 生体中の細胞や組織は, ハイドロキシアパタイトの表面性状によって, かなり変化に富んだ反応性を示すことが考えられる. その表面性状は多孔質とか球状であるかといった形態的なものや, 結晶性や不純物の有無といった化学的, 結晶学的なものも含んでいる. 骨や歯のアパタイトや合成アパタイトは, 一般的に6角柱状あるいは6角板状の形をしている. 骨のアパタイトは, 200×30×70Aと小さく, 歯のエナメル質のアパタイトは500×600×300Aぐらいある. 合成アパタイトは, 最大約1cmぐらいの針状ないし柱状結晶である. 西山らは, ハイドロキシアパタイトと唾液との反応に関してアミノ酸アナライザー, および電気泳動によるタンパク吸着について報告している.
Practice : 歯科学
Keywords : 生体材料, ハイドロキシアパタイト, たんぱく吸着

English

Title : Study on Adsorption of Human Serum Protein to Biomaterials
Subtitle : Original article
Authors : Kiminori AKAGI, Shigeru Saito
Authors(kana) :
Organization : Department of Oral Biochemistry, Kanagawa Dental College
Journal : Kanagawa Shigaku
Volume : 24
Number : 2
Page : 345-357
Year/Month : 1989 / 9
Article : Original article
Publisher : Kanagawa Odontological Society
Abstract : Abstract : In our study of the interaction between dental implant materials and human serum proteins, a simple column chromatographic method to measure extraction of proteins by the biomaterials was developed. The method allows for subsequent analysis of the adsroped proteins by two dimentional microelectrophresis. A system to measure dyestained proteins on two-dimensional polyacrylamide gels employing a television camera for data acquisition and a microcomputer for data analysis is described. It can be seen that elution from the hydroxyapatite columns are qualitatively similar, more protein eluting at 0.1 M phosphate. Less protein was adsorbed by the 1,250°C and 1,400°C hydroxyapatite ceramics, and equal amounts were eluted with 0.01 M and 0.1 M phosphate solutions. The 0.1M phosphate eluates were subsequently analyzed by two-dimensional electrophoresis. The proteins adsorbed band eluted from the biomaterials, are estimated to be albumin, pl 4.7-4.9; transferin, pl 5.9 and IgG, pl 5.8-7.3. pl's were obtained from literature and tentative identifications made made by comparison with the patterms of reference serum. The protein pattern from each biomaterial was reproducible. Albumin, IgG and transferin were obtained from non-treated hydroxyapatite. Different patterns were observed with eluates of 1,250°C and 1,450°C hydrexyapatite ceramics. The large spot, tentatively identified as albumin and a small amount of IgG, were the only proteins seen. We conclude that hydroxyapatite and hydroxyapatite ceramics can adsorbed of human serum protein. Selective adsorption of protein may occur a structure change of the material surface activated by sintered temperature.
Practice : Dentistry
Keywords :