Increased bone growth by local prostaglandin E2 in rats

Increased bone growth by local prostaglandin E2 in rats
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局部前列腺素 E2 促进大鼠骨骼生长

DOI:
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发表时间:
2004
影响因子:
4.2
通讯作者:
S. Lin
S. Lin
中科院分区:
医学3区
文献类型:
--
作者:
Rong;Tang‐Kue Liu;S. Lin

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摘要研究了前列腺素 E2 (PGE2) 对大鼠骨生长的影响。每天通过局部骨内途径向左胫骨干骺端注射 PGE2(1、10 和 100 pmol),持续 14 天。注射媒介物和盐水的对侧右胫骨作为对照。未接受注射的大鼠作为正常对照。获得的结果表明,PGE2 轻微但显着地降低了体重增量,而不影响胫骨长度。 PGE2 最显着的作用是使干骺端骨小梁增加 45-81%,且呈剂量依赖性。显微镜检查显示,PGE2 明显增加了新编织骨的形成。骨细胞群研究显示,注射 PGE2 的肢体和对侧肢体的初级海绵体内的成骨细胞和破骨细胞数量没有差异。然而,注射 PGE2 的四肢次生海绵体内的成骨细胞和破骨细胞数量显着增加。这一发现证实了 PGE2 在骨形成中的刺激作用。局部骨内注射PGE2被证明是研究局部生长因子对骨代谢影响的良好模型,且有效剂量较低,消除了全身副作用。
SummaryThe effects of prostaglandin E2 (PGE2) on bone growth were investigated in rats. Daily injection of PGE2 (1, 10, and 100 pmol) was given via local intraosseous route into the metaphysis of the left tibia for 14 days. The contralateral right tibia injected with vehicle and saline was for the control. The rats receiving no injection provided as normal control. The results obtained indicated that PGE2 slightly but significantly decreased the body weight increment without effect on tibial length. The most prominent effect of PGE2 was the increase of metaphyseal bone trabeculae by 45–81% in a dose-dependent manner. The microscopic examination revealed that PGE2 unequivocally increased the new woven bone formation. The bone cell population study showed no difference between the number of osteoblasts and osteoclasts in primary spongiosa of the PGE2-injected limbs and those of contralateral limbs. However, the numbers of osteoblasts and osteoclasts were markedly increased in secondary spongiosa in the PGE2-injected limbs. This finding confirmed a stimulatory role of PGE2 in the bone formation. The local intraosseous injection of PGE2 was proven to be a good model for the study of local growth factors on bone metabolism with a lower effective dose which eliminates the systemic side effects.
DOI: 10.1016/0169-6009(91)90109-d
发表时间: 1991-10-01
期刊: BONE AND MINERAL
影响因子: --
作者:
JEE, WSS;KE, HZ;LI, XJ
通讯作者: LI, XJ
局部输注前列腺素 E1 可刺激体内下颌骨形成。
DOI: 10.1111/j.1600-0714.1988.tb01324.x
发表时间: 1988
期刊: Journal of oral pathology
影响因子: --
作者:
MarksJr,SC;Miller,S
通讯作者: Miller,S
DOI: 10.1016/8756-3282(90)90057-6
发表时间: 1990
期刊: Bone
影响因子: 4.1
作者:
Mori,S;Jee,WS;Li,XJ;Chan,S;Kimmel,DB
通讯作者: Kimmel,DB
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DOI: 10.1016/8756-3282(90)90091-c
发表时间: 1990
期刊: Bone
影响因子: 4.1
作者:
Li,XJ;Jee,WS;Li,YL;Patterson-Buckendahl,P
通讯作者: Patterson-Buckendahl,P