JCEM:胰岛素抵抗与处于骨峰值的非糖尿病人的骨密质大小有关

2017-06-19 MedSci MedSci原创

在这群非糖尿病人的骨峰值期,胰岛素抵抗与小梁骨和骨密质大小成反比。在调整了身体成分、肌肉大小或功能或性类固醇水平后,这些关联仍持续存在,这表明胰岛素抵抗对骨骼几何结构的影响是独立的。

背景:
在2型糖尿病中,尽管保持区域骨矿物质密度,但骨折的风险却增加了。虽然这一明显的悖论在一定程度上可以解释为胰岛素抵抗影响骨结构和/或物质特性,但关于研究胰岛素抵抗与骨几何结构之间的关系的研究很少。

目的:
在骨峰值时期的非糖尿病患者中探索这种联系。

设计:
在一所大学的研究中心,招募了996名年龄在25岁到45岁之间的非糖尿病男性患者。此研究采用基于人群的横断面同胞配对法。

主要结果测量:
运用抗胰岛素性稳态模式评估法(HOMA-IR)评估胰岛素抵抗,用空腹血清样本测量胰岛素和葡萄糖。在桡骨远端、桡、胫骨干上,使用外周定量计算机断层扫描术评估骨几何结构。

结果:
在年龄、身高和体重调整分析的情况下,HOMA-IR与位于桡骨远端的小梁区域、皮质区、骨膜和骨内周、桡骨和胫骨干的极性强度指数呈负相关(β≤ 0.13, P < 0.001)。在对经双能量x射线扫描吸光测定法得出的身体成分、骨代谢标记、肌肉大小或功能测量、脂联素、瘦素、胰岛素样生长因子1或性类固醇水平进行调整后,这些关联基本上保持不变。

结论:
在这群非糖尿病人的骨峰值期,胰岛素抵抗与小梁骨和骨密质大小成反比。在调整了身体成分、肌肉大小或功能或性类固醇水平后,这些关联仍持续存在,这表明胰岛素抵抗对骨骼几何结构的影响是独立的。

原始出处
Charlotte Verroken, Hans-Georg Zmierczak, Stefan Goemaere,et al. Insulin Resistance Is Associated With Smaller Cortical Bone Size in Nondiabetic Men at the Age of Peak Bone Mass. JCEM. 2017 June.

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    2017-11-22 szhvet
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    2017-07-16 baoya
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    2017-07-23 achengzhao
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    2018-01-22 smallant2015
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