Does simvastatin stimulate bone formation in vivo?

Does simvastatin stimulate bone formation in vivo?
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辛伐他汀会刺激体内骨形成吗?

DOI:
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发表时间:
2003
影响因子:
2.3
通讯作者:
J. Alexander
J. Alexander
中科院分区:
医学3区
文献类型:
--
作者:
D. von Stechow;S. Fish;D. Yahalom;I. Bab;M. Chorev;R. Müller;J. Alexander

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背景他汀类药物是一种抑制肝脏胆固醇合成的有效化合物,据报道可以在组织培养物以及大鼠和小鼠中诱导骨形成。为了重新检验他汀类药物对骨形成的潜在合成代谢作用,我们在已建立的去势 (OVX) Swiss-Webster 小鼠模型中,将辛伐他汀 (SVS) 的活性与已知的 PTH 合成代谢作用进行了比较。方法小鼠在 12 周龄 (T0) 时被切除卵巢,不接受治疗 5 周以允许骨质减少的发生 (T5),然后治疗 8 周 (T13)。通过微型计算机断层扫描(微型 CT)分析整个股骨、小梁骨和皮质股骨。采用液相色谱/质谱法 (LC/MS) 检测小鼠血清中 SVS 及其活性代谢物辛伐他汀 β-羟基酸 (SVS-OH) 的存在。结果与 OVX 载体治疗组相比,接受 PTH(80 微克/公斤/天)治疗的动物在 T13 时的小梁 BV/TV 高出 4.2 倍(p < 0.001)。然而,SVS 治疗组(10 mg/kg/天,通过管饲法给药)的相同比较显示没有显着差异(p = NS)。灌胃 100 mg SVS 后 20 分钟,LC/MS 检测到小鼠血清中的 SVS 和 SVS-OH。血清骨钙素测定 (OC) 表明,在这项体内研究中,SVS 治疗并未显着增强骨形成和成骨细胞活性。 结论 虽然 PTH 证明了对骨的预期合成代谢作用,但 SVS 未能刺激骨形成,尽管我们通过 LC/MS 验证了小鼠血清中的活性 SVS-OH 代谢物。虽然他汀类药物在体外对骨形成有明显的影响,但现有的“肝脏靶向”他汀类药物的配方需要进一步完善以提高体内功效。
BackgroundStatins, potent compounds that inhibit cholesterol synthesis in the liver have been reported to induce bone formation, both in tissue culture and in rats and mice. To re-examine potential anabolic effects of statins on bone formation, we compared the activity of simvastatin (SVS) to the known anabolic effects of PTH in an established model of ovariectomized (OVX) Swiss-Webster mice.MethodsMice were ovariectomized at 12 weeks of age (T0), remained untreated for 5 weeks to allow development of osteopenia (T5), followed by treatment for 8 weeks (T13). Whole, trabecular and cortical femoral bone was analyzed by micro-computed tomography (micro CT). Liquid chromatography/mass spectrometry (LC/MS) was used to detect the presence of SVS and its active metabolite, simvastatin β-hydroxy acid (SVS-OH) in the mouse serum.ResultsTrabecular BV/TV at T13 was 4.2 fold higher in animals treated with PTH (80 micro-g/kg/day) compared to the OVX-vehicle treated group (p < 0.001). However, the same comparison for the SVS-treated group (10 mg/kg/day administered by gavage) showed no significant difference (p = NS). LC/MS detected SVS and SVS-OH in mouse serum 20 minutes after gavage of 100 mg SVS. A serum osteocalcin assay (OC) demonstrated that neither bone formation nor osteoblast activity is significantly enhanced by SVS treatment in this in vivo study.ConclusionsWhile PTH demonstrated the expected anabolic effect on bone, SVS failed to stimulate bone formation, despite our verification by LC/MS of the active SVS-OH metabolite in mouse serum. While statins have clear effects on bone formation in vitro, the formulation of existing 'liver-targeted' statins requires further refinement for efficacy in vivo.
西立伐他汀和甲状旁腺激素对老年雄性斯普拉格道利大鼠腰椎的影响。
DOI: 10.1016/s8756-3282(02)00803-7
发表时间: 2002
期刊: Bone
影响因子: 4.1
作者:
Banu,J;Kalu,DN
通讯作者: Kalu,DN
DOI: 10.1038/79510
发表时间: 2000-09-01
期刊: NATURE MEDICINE
影响因子: 82.9
作者:
Kureishi, Y;Luo, ZY;Walsh, K
通讯作者: Walsh, K
他汀类药物的益处开始显现。
DOI: 10.1172/jci13556
发表时间: 2001
期刊: The Journal of clinical investigation
影响因子: --
作者:
Altieri,DC
通讯作者: Altieri,DC