アブストラクト(23巻1号:神奈川歯学)

神奈川歯学

Japanese

Title : 腫瘍細胞への67Ga取り込みにおけるpathwayについて
Subtitle : 原著
Authors : 村橋秀夫, 東与光
Authors(kana) :
Organization : 神奈川歯科大学放射線学教室
Journal : 神奈川歯学
Volume : 23
Number : 1
Page : 1-14
Year/Month : 1988 / 6
Article : 原著
Publisher : 神奈川歯科大学学会
Abstract : 「緒言」1969年, EdwardsとHayesによって, 67Gaがホジキン病の病巣に強く取り込まれることが報告されて以来, 67Gaは悪性腫瘍および炎症のイメージ診断のアイソトープとして現在も臨床で広く利用されている. しかし, 67Gaの悪性腫瘍への集積機序については, 未だ, 不明な点が少なくない. 1971年, 東らは, 担癌マウスを用いて67Gaと鉄の関係をはじめて報告した. その後, 1974年, Clausen, Haraらによって注射された67Gaが血液中のtransferrinと結合することがわかり, 鉄との関係が重要視された. 1974年, Sephtonらは, in vitroにおいてtransferrinの存在が, 67Gaの腫瘍細胞への取り込みに影響を及ぼすと報告した. これらの結果をふまえて, 1978年, Larsonらは, 腫瘍細胞内に67Gaが取り込まれるメカニズムとして, transferrin receptor説を提唱した.
Practice : 歯科学
Keywords : 67Ga, 59Fe, transferrin receptor, mouse leukemic cell L-5178Y

English

Title : Study on the Pathway of 67Ga Uptake into Cultured Tumor Cells
Subtitle : Original article
Authors : Hideo MURAHASHI, Tomomitsu Higashi
Authors(kana) :
Organization : Department of Radiology, Kanagawa Dental College
Journal : Kanagawa Shigaku
Volume : 23
Number : 1
Page : 1-14
Year/Month : 1988 / 6
Article : Original article
Publisher : Kanagawa Odontological Society
Abstract : Abstract : In this study, the author attempts to discover the process by which 67Ga enters tumor cells in vitro. After addition of ferric-citrate, monensin, or valinomycin to mediums containing mouse leukemia cell L-5178, levels of 67Ga accumulation in tumor cells were examined. The following results were obtained : 1) When ferric-citrate was added to the medium, 67Ga accumulation in tumor cells was not inhibited completely, compared with that of the control. 2) When monensin, which inhibits the recycle of transferrin receptor, was added to the medium, 67Ga accumulation was not inhibited completely, as compared with the control, however, 59Fe accumulation in the cells was completely inhibited. 3) When a mixture of ferric-citrate and monensin was added to the medium, 67Ga accumulation was inhibited more than by the addition of ferric-citrate only. From these results, it is suggested that there are two pathways of 67Ga accumlation in tumor cells : One is facilitated by transferrin receptor and the other is not. Furthermore, it is found that the former is of primary importance for 67Ga accumulation and the other plays only a minor role.
Practice : Dentistry
Keywords : 67Ga, 59Fe, transferrin receptor, mouse leukemic cell L-5178Y