Effects of endothelial cell growth factor on bone remodelling in vitro.

Effects of endothelial cell growth factor on bone remodelling in vitro.
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内皮细胞生长因子对体外骨重塑的影响。

DOI:
10.1172/jci112807
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发表时间:
1987
期刊:
The Journal of clinical investigation
影响因子:
--
通讯作者:
Maciag,T
Maciag,T
中科院分区:
--
文献类型:
--
作者:
Canalis,E;Lorenzo,J;Burgess,WH;Maciag,T

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研究了血管内皮细胞生长因子(ECGF)α对培养胎鼠颅骨的成骨作用和对胎鼠长骨的骨吸收作用。0.1-100 ng/ml的ECGF可刺激DNA的[~3H]胸腺嘧啶核苷掺入,这种作用可被肝素增强。ECGF处理24 h可减少[~3H]Pro掺入胶原,但处理48~96 h可增加胶原和非胶原蛋白的合成,并伴随DNA含量的增加。ECGF对颅骨的胶原降解和长骨的45Ca释放无明显影响,说明ECGF对骨吸收无影响。尽管ECGF增加了前列腺素E_2的浓度,但其对DNA合成的影响不是由前列腺素介导的。总之,ECGF刺激颅骨DNA合成,这是一种导致蛋白质合成普遍增加的效果,但ECGF对基质降解或骨吸收没有影响。
Endothelial cell growth factor (ECGF) alpha was studied for its effects on bone formation in cultured fetal rat calvariae and on bone resorption in cultured fetal rat long bones. ECGF at 0.1-100 ng/ml stimulated [3H]thymidine incorporation into DNA, an effect enhanced by heparin. Treatment with ECGF for 24 h decreased the incorporation of [3H]proline into collagen but treatment for 48-96 h increased collagen and noncollagen protein synthesis, an effect that was concomitant with an increase in DNA content. ECGF did not alter collagen degradation in calvariae or 45Ca release from long bones, which indicated it had no effect on bone resorption. Although ECGF increased prostaglandin E2 concentrations, its effect on DNA synthesis was not prostaglandin-mediated. In conclusion, ECGF stimulates calvarial DNA synthesis, which is an effect that results in a generalized increase in protein synthesis, but ECGF has no effect on matrix degradation or bone resorption.
DOI: 10.1038/306378a0
发表时间: 1983-01-01
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影响因子: 64.8
作者:
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DOI: --
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发表时间: 1985
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