JCEM:体重指数和避孕药影响年龄、性别和青春期调整的IGF-I和IGFBP-3参考范围

2022-04-05 从医路漫漫 MedSci原创

在评估和解释 IGF-I 和IGFBP-3测量的临床相关性时,必须考虑 BMI 和CD

背景影响血清胰岛素样生长因子I(IGF-I)及其结合蛋白3(IGFBP-3)水平的各种临床因素并未进行过完整的描述。

目的:我们询问是否BMI,避孕药(CDs) 和激素替代疗法 (HRT) 对解释新的年龄、性别和青春期调整的IGF-I 和IGFBP-3 血清水平参考范围的数据具有潜在影响。

设计和设置:主题主要参与者来自两项基于人群的队列研究:儿童和青少年的“LIFE Child”研究和“LIFE Adult”研究。参与者:3个月到81岁。

主要结果测量:IGF-I或 IGFBP-3之间的关联,用一种新的电化学发光免疫测定法测量,预测因子BMI和CDs使用分层线性模型估计。

结果:IGF-I具有较好的一致性[一致性相关系数=0.980(95%CI:0.979~0.981)],但显示ECLIA比CLIA检测的值稍低。IGFBP3的符合率稍低,ECLIA与CLIA的符合率也较低(CCC=0.802(95%CI:0.791-0.813),斜率=1.08,低于9200 ng/mL。这些发现表明,两种蛋白质的绝对值有一定的一致性,IGF-I的平均差值为4.3%,IGFBP-3的平均差值为10.8%。使用SDS值的平均差异也是中等的,IGFI和IGFBP-3的SDS值分别为0.14和-0.37。因此,大约18%的IGF-I和22%的IGFBP-3的所有测量样本将在多于一个SD的相关诊断差异中显示不同的结果。

表1 被排除在参考队列之外的非肥胖女孩(体重指数±1.881)和报告使用避孕药或激素替代治疗的女性(体重指数从18到<30公斤/平方米)的年龄分布。Cd使用包括以雌激素和孕激素为基础的成分(epCDs,14.5-64.4岁)或仅以孕激素为基础的成分(PCDS,31.0-55.8岁);HRT包括以雌激素为基础或以雌激素和孕激素为基础的组合成分(e/EP HRT,41.5-76.1岁)。各个年龄范围中与女性总数相关的部分以百分比的形式给出。

表2 口服与非口服联合服用以雌激素-孕激素为基础的CD(EpCDs)或以孕激素为基础的CD(PCDS)以及以雌激素或以雌激素为基础的激素替代疗法(eHRT/epHRT)对成年女性(≥19岁)胰岛素样生长因子-1和胰岛素样生长因子结合蛋白-3的影响。给出了贝塔估计和相应的95%可信区间。

表3 IGF-I和IGFBP-3的平均值和标准差(SD)值以及ECLIA和CLIA分析的相应SDS值。还给出了ECLIA和CLIA之间差异的中位数、极差、平均值和SD值。包括2 0 5 0名受试者的3 476个样本,平均年龄10.7±5.6岁。

结论:在评估和解释 IGF-I 和IGFBP-3测量的临床相关性时,必须考虑 BMI 和CD。

 

原文出处:

Hörenz C,  Vogel M,  Wirkner K,et al.BMI and contraceptives affect new age-, sex-, and puberty-adjusted IGF-I and IGFBP-3 reference ranges across life span.J Clin Endocrinol Metab 2022 Mar 16

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    2022-09-12 xxxx1049
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    2022-10-16 smallant2015
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    2022-12-10 achengzhao
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