RAGE supports parathyroid hormone-induced gains in femoral trabecular bone.

RAGE supports parathyroid hormone-induced gains in femoral trabecular bone.
复制标题

RAGE 支持甲状旁腺激素诱导的股骨小梁骨增加。

DOI:
10.1152/ajpendo.00564.2009
复制
发表时间:
2010
期刊:
American journal of physiology. Endocrinology and metabolism
影响因子:
--
通讯作者:
Bidwell,JosephP
Bidwell,JosephP
中科院分区:
--
文献类型:
--
作者:
Philip,BinuK;Childress,PaulJ;Robling,AlexanderG;Heller,Aaron;Nawroth,PeterP;Bierhaus,Angelika;Bidwell,JosephP

文献摘要

参考文献

被引文献

相似文献

甲状旁腺激素 (PTH) 可恢复骨质疏松骨骼的骨量,但其潜在机制仍存在重大问题。晚期糖基化终末产物受体 (RAGE) 是免疫球蛋白超家族的多配体受体;然而,最近的研究表明其在骨生理学中的作用。我们通过用 30 μg·kg−1·day−1 的人 PTH-(1–34) 或载体对照(7 天/周)治疗 10 周龄雌性 Rage 敲除 (KO) 和野生型 (WT) 小鼠,持续 7 周,研究了 RAGE 对激素诱导的骨增加的重要性。在两种基因型中,PTH 在整个骨骼中产生相同的骨矿物质密度 (BMD) 和骨矿物质含量 (BMC) 相对增益。 PTH 介导的股骨中段皮质面积的相对增加在无效小鼠中并未受到损害。然而,在 Rage-KO 小鼠中,激素诱导的股骨松质骨增加显着减弱。 RAGE 的缺失会损害 PTH 介导的股骨松质骨体积、连接密度和小梁数量的增加,但不会影响小梁厚度的增加或小梁间距的减小。禁用 RAGE 会减少股骨骨形成基因的表达,但它们的相对 PTH 反应性并未受损。中和RAGE并不会减弱椎骨松质骨对激素的反应。Rage无效的小鼠表现出骨量增加率减弱(脊柱除外),而脂肪量增加率增加。我们得出的结论是,RAGE 对于骨骼对合成代谢 PTH 的反应的关键方面是必要的。具体来说,RAGE 是激素介导的股骨小梁结构改善所必需的,但本质上对于增加皮质厚度并不是必需的。
Parathyroid hormone (PTH) restores bone mass to the osteopenic skeleton, but significant questions remain as to the underlying mechanisms. The receptor for advanced glycation end products (RAGE) is a multiligand receptor of the immunoglobulin superfamily; however, recent studies indicate a role in bone physiology. We investigated the significance of RAGE to hormone-induced increases in bone by treating 10-wk-old femaleRage-knockout (KO) and wild-type (WT) mice with human PTH-(1–34) at 30 μg·kg−1·day−1or vehicle control, 7 days/wk, for 7 wk. PTH produced equivalent relative gains in bone mineral density (BMD) and bone mineral content (BMC) throughout the skeleton in both genotypes. PTH-mediated relative increases in cortical area of the midshaft femur were not compromised in the null mice. However, the hormone-induced gain in femoral cancellous bone was significantly attenuated inRage-KO mice. The loss of RAGE impaired PTH-mediated increases in femoral cancellous bone volume, connectivity density, and trabecular number but did not impact increases in trabecular thickness or decreases in trabecular spacing. Disabling RAGE reduced femoral expression of bone formation genes, but their relative PTH-responsiveness was not impaired. Neutralizing RAGE did not attenuate vertebral cancellous bone response to hormone.Rage-null mice exhibited an attenuated accrual rate of bone mass, with the exception of the spine, and an enhanced accrual rate of fat mass. We conclude that RAGE is necessary for key aspects of the skeleton's response to anabolic PTH. Specifically, RAGE is required for hormone-mediated improvement of femoral trabecular architecture but not intrinsically necessary for increasing cortical thickness.
DOI: 10.1210/endo.142.12.8536
发表时间: 2001-12
期刊: Endocrinology
影响因子: 4.8
作者:
S. Khosla
通讯作者: S. Khosla
DOI: 10.1002/jcb.21572
发表时间: 2008-04-15
影响因子: 4
作者:
Bidwell, Joseph P.;Yang, Jieping;Robling, Alexander G.
通讯作者: Robling, Alexander G.
将脂肪从外周转移到骨髓:为什么是 I 型糖尿病?
DOI: 10.1586/eem.09.3
发表时间: 2009
影响因子: 3.2
作者:
L. McCabe
通讯作者: L. McCabe
DOI: 10.1136/bmj.280.6228.1340
发表时间: 1980-01-01
影响因子: 105.7
作者:
REEVE, J;MEUNIER, PJ;POTTS, JT
通讯作者: POTTS, JT
DOI: 10.1016/s8756-3282(00)00430-0
发表时间: 2001-02-01
期刊: BONE
影响因子: 4.1
作者:
Jerome, CP;Burr, DB;Brommage, R
通讯作者: Brommage, R