アブストラクト(25巻3号:神奈川歯学)

神奈川歯学

Japanese

Title : ヒト乳歯および永久歯歯根膜培養線維芽細胞に対するAscorbic Acidの影響
Subtitle : 原著
Authors : 本間秋彦*1,*2, 檜垣旺夫*1, 斎藤滋*2
Authors(kana) :
Organization : *1神奈川歯科大学小児歯科学教室, *2神奈川歯科大学口腔生化学教室
Journal : 神奈川歯学
Volume : 25
Number : 3
Page : 273-283
Year/Month : 1990 / 12
Article : 原著
Publisher : 神奈川歯科大学学会
Abstract : 「緒言」 小児歯科学にとって歯ならびに歯周組織の形成と発育について研究することは, 重要なテーマである. とくに間葉系結合組織の細胞を主体とする歯胚の基質形成には, 古くからビタミンCの密接な関与が知られ, その欠乏による歯の発育阻害が報告されている. この必須ビタミンの1つであるビタミンCすなわち, アスコルビン酸(Ascorbic acid ; AsA)は, ヒト, サル, モルモットにおいて, L-グロノラクトンを基質としAsAの合成に必要なL-グロノラクトンオキシダーゼが, 欠乏しているため, 外部より摂取されなければならない. Berkovitz BKは, モルモットをビタミンC欠乏食で飼育すると, 永久前歯の萌出速度が遅延すると報告していることから, AsAは歯胚の発育と歯周組織の形成に大きな影響を有するものと考えられる. また, AsAはコラーゲン生合成におけるcofactorとしての作用がある.
Practice : 歯科学
Keywords : Ascorbic acid, ヒト乳歯歯根膜線維芽細胞, ALPase, Cell attachment

English

Title : Effect of Ascorbic acid for Periodontal Ligament Fibroblast of Human Deciduous and Permanent Teeth.
Subtitle :
Authors : Akihiko HOMMA*1,*2, Morio Higaki*1, Shigeru Saito*2
Authors(kana) :
Organization : *1Department of Pediatric Dentistry, Kanagawa Dental College, *2Department of Oral Biochemistry, Kanagawa Dental College
Journal : Kanagawa Shigaku
Volume : 25
Number : 3
Page : 273-283
Year/Month : 1990 / 12
Article : Original article
Publisher : Kanagawa Odontological Society
Abstract : [Abstract]: Ascorbic acid (AsA) plays an important role in the formation of collagen in the periodontal ligaments. However, the biochemical role of AsA on the cell metabolism of periodontal ligaments remains undeveloped. This study attempts to explore the effect of AsA and L-Ascorbic acid-2-phosphate (AsA-P) on the cell proliferation and differentiation, and the activity of cell attachment and spreading of conditioned medium (CM) prepared from human fibroblasts derived from the periodontal ligaments of deciduous teeth (HPLF-Y) and permanent teeth (HPLF) according to the explantation methods described by Saito et al. The effect of AsA and AsA-P on DNA synthesis was observed as 15 to 20 percent enhancement in comparison with that of the control for both HPLF-Y and HPLF with exception of AsA-P for HPLF at the 7 day of cell culture. The ALPase activity of HPLF-Y and HPLF at confluent phase was stimulated significantly by the presence of AsA and AsA-P. By morphological observation, the cell spreading activity of the CM of HPLF-Y exposed with AsA-P was higher than that of exposed with AsA. An induction of the cell attachment factors from HPLF-Y is enhanced intensively by the treatment of AsA-P. Therefore, AsA-P may regulate intensively the proliferation and differentiation of HPLF-Y in terms of DNA synthesis and ALPase activity including the enhanced secretion of attachment and spreading factors.
Practice : Dentistry
Keywords : Ascorbic acid, ALPase, Cell attachment