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Diabetes Care:胰岛素抵抗或始于儿童期

2012-02-06 MedSci MedSci原创

 英国一项长达9年的纵向前瞻性队列研究(The EarlyBird Diabetes study,EarlyBird 26)证实,胰岛素抵抗(IR)在儿童中期,即在青春期开始之前的几年时间内即开始产生。IR与儿童年龄的相关性超过进入青春期。超过60%的青春期前IR变异无法解释。鉴于儿童期糖尿病的人口统计数据正在发生变化,青春期前的IR可能是重要原因。研究在2

 英国一项长达9年的纵向前瞻性队列研究(The EarlyBird Diabetes study,EarlyBird 26)证实,胰岛素抵抗(IR)在儿童中期,即在青春期开始之前的几年时间内即开始产生。IR与儿童年龄的相关性超过进入青春期。超过60%的青春期前IR变异无法解释。鉴于儿童期糖尿病的人口统计数据正在发生变化,青春期前的IR可能是重要原因。研究在2012年1月25日在线发表于《糖尿病护理》(Diabetes Care)杂志。

  胰岛素抵抗与糖尿病相关。男女青春期IR水平较高,有研究显示这一增加独立于肥胖的变化。然而,较少的纵向研究关注儿童,同时IR是否归因于青春期真正开始目前尚不清楚。该研究以5~14岁的健康儿童为研究对象,旨在获取IR和青春期开始相关性的纵向研究数据,及其与年龄、性别、肥胖和胰岛素样生长因子(IGF – 1)之间的相互作用。

  研究共纳入235例儿童(134例为男生)受试者,每年对受试者的稳态模型评估(HOMA - IR),皮脂(SSF),肥胖(脂肪的百分比,采用双能X线骨密度仪测量),血清瘦素和IGF – 1水平进行测量。青春期的起始采用坦纳氏期(TS)以及促黄体生成素(LH)能够连续检测(≥0.2 国际单位/升)的年龄进行界定。

  结果表明,IR自7岁开始日见增多,即达到TS2或LH可检测年龄之前的3~4年。在进入青春期前的3年内,肥胖和IGF – 1水平的增加可以共同解释34%男孩和35%女孩的IR变异(P值均<0.001)。IGF–1对男孩IR的影响更为显著,尽管其IGF-1的水平相对较低。

  链接:

  Age Before Stage: Insulin Resistance Rises Before the Onset of Puberty

  A 9-year longitudinal study (Early Bird 26)

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    2012-06-07 baoya
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