アブストラクト(51巻1号:神奈川歯学)

神奈川歯学

Japanese

Title : β-TCP骨補填材顆粒近傍での骨形成に対するコラーゲン由来トリペプチド経口投与の影響
Subtitle : 原著
Authors : 古澤利武, 奥寺俊允, 酒井康夫*, 松嶋雄太**, 鵜沼英郎**, 高橋常男
Authors(kana) :
Organization : 神奈川歯科大学大学院歯学研究科三次元画像解剖学講座, *ゼライス株式会社中央研究所, **山形大学大学院理工学研究科物質化学工学専攻
Journal : 神奈川歯学
Volume : 51
Number : 1
Page : 34-38
Year/Month : 2016 / 6
Article : 原著
Publisher : 神奈川歯科大学学会
Abstract : 「緒言」コラーゲンは人体の細胞外マトリックスの主要成分であり, 皮膚, 血管, 内臓, 骨などの結合組織などに広く分布している. コラーゲンは, -Gly-X-Y-(Gly:グリシン, X, Y:グリシン以外の, 主にプロリン, ヒドロキシプロリン, アラニン)というトリペプチドを基本ユニットとするα鎖が3重に絡み合った構造をもつ. この特異な構造のため, 一般の蛋白質加水分解酵素(プロテアーゼ)では容易に分解されない. コラーゲン原料から加熱抽出した, いわゆる変性コラーゲンがゼラチンであり, 食品, 化粧品, 医薬品のカプセルなど様々な分野で利用されている. コラーゲンを低分子化する際に使用するコラーゲン原料や加水分解の方法によって, 生成物を構成するペプチドの種類, 組成比や分子量が異なる. コラーゲンを原料とする健康食品の経口摂取が人体に与える影響については必ずしも一定の見解が得られているわけではない.
Practice : 歯科学
Keywords : コラーゲン由来トリペプチド, 骨形成, β-TCP, 骨補填材

English

Title : Effect of oral administration of collagen tripeptide on bone formation in the vicinity of β-TCP bone augmentation granules
Subtitle :
Authors : Toshitake FURUSAWA, Toshimitsu OKUDERA, Yasuo SAKAI*, Yuta MATSUSHIMA**, Hidero UNUMA**, Tsuneo TAKAHASHI
Authors(kana) :
Organization : Department of 3 Dimensional Imaging Anatomy, Graduate School of Dentistry, Kanagawa Dental University, *Central Research Institute, Jellice Co.,Ltd., **Department of Chemistry and Chemical Engineering, Graduate School of Science and Engineering, Yamagata University
Journal : Kanagawa Shigaku
Volume : 51
Number : 1
Page : 34-38
Year/Month : 2016 / 6
Article : Original article
Publisher : Kanagawa Odontological Society
Abstract : [Abstract] It has been common practice to use porous β-tricalcium phosphate (β-TCP) granules or blocks as bioresorbable augmentation materials for bone regeneration in orthopedics and dentistry. Although β-TCP is slowly resorbed while bone formation proceeds, it is often pointed out that the resorption is faster than bone regeneration. Therefore, it has been desired to establish some means to promote bone formation. Bone morphogenetic protein (BMP) is known to promote bone formation; however, its limited availability and the risk of adverse immune reactions remain unsolved. On the other hand, collagen tripeptide (Ctp), which is derived from porcine skin collagen by enzymatic digestion, has recently been found to stimulate production of type I collagen and calcium salts through upregulating bone-specific transcription factor, Osterix. Ctp is readily available and has a very low risk of adverse immune reactions; therefore, it may be a promising substance that promotes bone regeneration in a similar manner to BMP. In this work, the effect of oral administration of Ctp on bone regeneration in Wistar rats which had undergone implantation of β-TCP bone augmentation granules in calvarial bone defects was studied. After 14 days of administration of Ctp, significant new bone formation was recognized in the vicinity of the granules. On the other hand, new bone formation around the granules was not notably recognized in the control within 14 days. Within the range of the present work, Ctp administration promoted bone regeneration at a twofold faster rate. It is suggested that the early onset of new bone formation around the augmentation granules may be attributed to the proliferation and upregulation of osteoblasts caused by Ctp as well as β-TCP.
Practice : Dentistry
Keywords :