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血小板衍生生长因子刺激C3H成纤维细胞中异质性多磷酸肌醇代谢及磷酸盐摄取。

Platelet-derived-growth-factor-stimulated heterogeneous polyphosphoinositide metabolism and phosphate uptake in C3H fibroblasts.

作者信息

Holmsen H, Male R, Rongved S, Langeland N, Lillehaug J

机构信息

Department of Biochemistry, University of Bergen, Norway.

出版信息

Biochem J. 1989 Jun 1;260(2):589-92. doi: 10.1042/bj2600589.

Abstract

Pig platelet-derived growth factor (PDGF) increased the rate of [32P]Pi uptake by murine fibroblasts, resulting in a 3-9-fold elevation of the specific radioactivity of ATP, PtdInsP, PtdInsP2, PtdIns and phosphatidic acid. The specific radioactivity was 10-60-fold higher in ATP than in the four phospholipids. These substances are therefore not in metabolic equilibrium, which complicates determination of inositol phospholipid turnover.

摘要

猪血小板衍生生长因子(PDGF)提高了小鼠成纤维细胞对[32P]Pi的摄取率,导致ATP、磷脂酰肌醇磷酸(PtdInsP)、磷脂酰肌醇二磷酸(PtdInsP2)、磷脂酰肌醇(PtdIns)和磷脂酸的比放射性提高了3至9倍。ATP的比放射性比四种磷脂高10至60倍。因此,这些物质并非处于代谢平衡状态,这使得肌醇磷脂周转率的测定变得复杂。

相似文献

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Inositol phospholipid metabolism in human platelets stimulated by ADP.ADP刺激下的人血小板中的肌醇磷脂代谢
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本文引用的文献

8
Effects of PDGF on inositol phosphates, Ca2+, and contraction of mesangial cells.
Am J Physiol. 1987 Sep;253(3 Pt 2):F458-63. doi: 10.1152/ajprenal.1987.253.3.F458.

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