アブストラクト(22巻1号:神奈川歯学)

神奈川歯学

Japanese

Title : 生体材料に対する細胞の接着機構に関する研究
Subtitle : 原著
Authors : 木村守隆, 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 : 22
Number : 1
Page : 76-89
Year/Month : 1987 / 6
Article : 原著
Publisher : 神奈川歯科大学学会
Abstract : 「緒言」近年, 歯科領域で汎用されているBiomaterialは, 生体内, 特に骨組織の反応性の差異により3つのグループに分類される. 第1群は, 生体内で安定であり, Biomaterialが線維性結合織の被膜で覆れるか, 直接骨組織と接触した状態となる. Alumina ceramics, Titanium, Zirconia ceramicsに代表される生体不活性(Bioinert)材料である. 第2群は, Hydroxyapatite ceramics, Bioglassなどが属し, Biamaterial表層と周囲骨組織が化学的に結合する生体活性(Bioactive)材料である. 第3群は, 宿主組織に嗜好性を示して置換する生体崩壊性(Biode-gradable)材料であり, Tricalciumphosphate(TCP)がある. いずれのBiomaterialも, 生体修復材としての生化学的及び生物力学的な適合性, 組織接着性を具備することが必須であり, 現在まで多くの研究者が動物実験や臨床成績を報告してきたが, 各Biomaterialに対する組織親和性の差異が如何なる生化学的機構により発現するか不明な点が多い.
Practice : 歯科学
Keywords : 細胞接着, Bone cells, WI-38 cells, Biomaterial, SAM

English

Title : Fundamental Studies of Adhesion Mechanisms of Cultured Cells to Biomaterials.
Subtitle :
Authors : Moritaka KIMURA, Shigeru Saito
Authors(kana) :
Organization : Department of Oral Biochemistry, Kanagawa Dental College
Journal : Kanagawa Shigaku
Volume : 22
Number : 1
Page : 76-89
Year/Month : 1987 / 6
Article : Original article
Publisher : Kanagawa Odontological Society
Abstract : [Abstract]: In order to anlyze the biocompatibility of various biomaterials to calcified and noncalcified tissues, molecular mechanisms of cell adhesion have been investigated with human embryonic lung fibroblasts (WI-38) and bone cells dispersed from rat calvaria. When Hydroxyapatite ceramics, which have been shown to have an excellent osteocompatibility in vivo had been used as biomaterial plates in cultured dishes, it was revealed thet bone cells had a capacity enough to attach, proliferate and produce high amounts of substrate-attached material (SAM). Fibroblasts (WI-38 cells) had higher rates of cell attachment, growth and production of SAM on Alumina ceramics, Titanium and Zirconia ceramics which are categorized as Bioinert biomaterials because in bone tissues they resulted in appearance of connective tissues layer between that biomaterial and bone matrix. On the other hand, it was measured that bone cells have more negative charge on the surfacechcm the fibroblasts. Cell attachment of bone cells and fibroblasts to the biomaterials were chiefly determined by association of each surface charges between cells and biomaterials, although these properties did not mainly rely to rate of cell proliferation and SAM generation. These findings concerning the behavior of cell populations in vitro on the surface of biomaterial plates allow the conclusion that SAM contents produced by cultured cells become one factor indicating biocompatibility and biostability of various biometerili to different tissue cells.
Practice : Dentistry
Keywords : Bone cells, WI-38 cells, Biomaterial, SAM