ヒライシ　サユリ   Sayuri Hiraishi
  平石　さゆり
   所属   栄養科学研究所
   職種   専任講師
言語種別 英語
発行・発表の年月 2004
形態種別 研究論文（学術雑誌）
査読 査読あり
標題 Oxidized phospholipids in oxidized low-density lipoprotein reduce the activity of tissue factor pathway inhibitor through association with its carboxy-terminal region.
執筆形態 共著
掲載誌名 Antioxid Redox Signal. Aug
巻・号・頁 6(4),pp.705-712
総ページ数 null
著者・共著者 Ohkura N, Hiraishi S, Itabe H, Hamuro T, Kamikubo Y, Takano T, Matsuda J, Horie S
概要 In this study, we explored the nature of active components that reduce the anticoagulant activity of TFPI in oxidized low-density lipoprotein (ox-LDL). The organic solvent-soluble fraction obtained from ox-LDL was fractionated by normal-phase HPLC. The binding profile of each fraction to TFPI showed a single peak eluting near purified oxidized phospholipid. The oxidation products of 1- and/or 2-oleoyl phosphatidylcholine or phosphatidylethanolamine were the most potent inhibitors of TFPI activity, whereas those of arachidonyl phosphatidylcholine possessed only a weak inhibitory effect on the TFPI activity. These oxidized phospholipids mainly associated with the C-terminal basic region of the TFPI molecule. The results indicate that oxidation products of delta-9 unsaturated phospholipids are candidate active components of ox-LDL that impair the function of TFPI through specific association with its C-terminal basic region.