アブストラクト(22巻2号:神奈川歯学)

神奈川歯学

Japanese

Title : 生体材料の生化学的研究- 機械的外力による細胞応答について -
Subtitle : 原著
Authors : 松本徹1),2), 浮谷實1), 斎藤滋2)
Authors(kana) :
Organization : 1)神奈川歯科大学補綴学教室第二講座, 2)神奈川歯科大学口腔生化学教室
Journal : 神奈川歯学
Volume : 22
Number : 2
Page : 355-366
Year/Month : 1987 / 9
Article : 原著
Publisher : 神奈川歯科大学学会
Abstract : 「緒言」近年歯科インプラントにおける生体材料の開発が活発に行われている. そして人工歯根としてのインプラントは臨床的に可成り良好な成績を収めている. しかし, その基本的細胞生化学的解析は充分とは言えない. 特に, 人工歯根は常時咬合力が加えられるため, 生体材料に対する細胞の親和性に関する木村, 木村らの重要な検索があるが機械的外力に対する細胞の応答性の研究を進めなければならない. さらに, 対象となる細胞はSodekら, Wasiら, Brunetteら, Saitoらおよび中島により, 歯根膜の線維芽細胞は他の結合組織線維芽細胞とは異なる性質を有することから, 人工歯根の研究において, ヒト歯根膜線維芽細胞あるいはヒト歯槽骨骨芽細胞を用いることが強く望まれる. そこで, 細胞に対するstressとして斉藤は機械的外力およびchemical stressがあり, 機械的外力はさらに, 1)Tension and compression, 2)Gravity, 3)Atomospheric, Partial GasおよびHydraulic pressure, 4)Thermodynamic stress (heat shock)さらに5)Electromagnetic fieldに分類している.
Practice : 歯科学
Keywords : メカニカルストレス, ヒト歯根膜線維芽細胞, 生体材料

English

Title : Biochemical Study of Biomaterials - Cell Response in Relation to Mechanical Stress -
Subtitle :
Authors : Tohru MATSUMOTO1),2), Makoto Ukiya1), Shigeru Saito2)
Authors(kana) :
Organization : 1)Department of Prosthetics, Kanagawa Dental College, 2)Department of Oral Biochemistry, Kanagawa Dental College
Journal : Kanagawa Shigaku
Volume : 22
Number : 2
Page : 355-366
Year/Month : 1987 / 9
Article : Original article
Publisher : Kanagawa Odontological Society
Abstract : [Abstract]: The mechanism of cell attachment may contribute to the understanding of those aspects of cell proliferation in relation to dental biomaterials on which a mechanical stress is applied through the masticatory movement. This study was attempted to evaluate cell metabolism in relation to the amino acid incorporation using primary cultured cells obtained from human periodontium such as periodontal ligament fibroblasts (HPLF), alveolar bone cells (HABC), and Gin-1 fibroblasts plated on Aluminum and MAS-SiC as the bioinert materials and the bioactive ceramics such as CPS and CPSN with and without SiC whisker. 1. The mechanical stress of 1.42 g/cm2 applied on the confluent cells during 48 hours in the cell culture system may postrate as heavy stress that is enough to induce an obvious morphological changes of the cells, whereas with the 1.14 g/cm2 loading the cells remained as apparently intact cells, at least, with the observation by means of the phase-contrust microscope. 2. The additional evidence of the mechanical stress to the cells was the reduction of alkaline phosphatase activity which was determined as 45% and 35% decrease compared with that of HPLF and HABC respectively. 3. The incorporation of amino acids into the cells was regulated by the characteristics of biomaterials and, most importantly, the mechanical stress applied on the cells exhibited as a distinct influences to the cell metabolism.
Practice : Dentistry
Keywords :