Cardiovascular Division, School of Medicine, University of Minnesota, Minneapolis, MN
Laboratory Medicine, School of Medicine, University of Minnesota, Minneapolis, MN.
J Am Heart Assoc. 2018 Feb 23;7(5):e007885. doi: 10.1161/JAHA.117.007885.
Collagen biomarkers may correlate with incident heart failure (HF) and its subtypes. We hypothesized that circulating procollagen type III N-terminal propeptide (PIIINP) and collagen type I carboxy-terminal telopeptide (ICTP) predict incident HF.
We used a stratified sampling design in a multiethnic sample of 3187 subjects, initially aged 45 to 84 years and free of cardiovascular disease. We assayed baseline serum PIIINP and ICTP concentrations using radioimmunoassay. Incident HF was adjudicated, distinguishing reduced ejection fraction (HFrEF; EF <45%) from preserved EF (HFpEF; EF ≥45%). The incidence density for HFpEF and HFrEF was computed using Poisson regression per SD for each of PIIINP and ICTP, adjusting in model 1 for age, race, sex, and renal function or in model 2 for these variables plus blood pressure and medication. Mean (SD) ICTP was 3.38±1.77 μg/L, and mean (SD) PIIINP was 5.48±2.04 μg/L. Among the HF cases, 96 were HFrEF and 107 were HFpEF. Neither ICTP nor PIIINP significantly predicted incident HFrEF. The incidence density for HFpEF per 100 people observed for 13 years was 1.65 for low PIIINP (lower 6 octiles) versus 3.00 for higher PIIINP (=0.002) in model 1 and correspondingly 1.45 versus 2.59 (=0.003) in model 2. For low ICTP (lower 7 octiles) versus higher ICTP (octile 8), incidence densities were 1.79 versus 3.64 (=0.002) in model 1 and 1.58 versus 3.12 (=0.002) in model 2.
High levels of circulating ICTP and PIIINP as collagen biomarkers appear to be associated with incident HFpEF, but not HFrEF.
胶原生物标志物与心力衰竭(HF)及其亚型的发生有关。我们假设循环前胶原 III 型 N 端前肽(PIIINP)和 I 型胶原羧基端肽(ICTP)可预测 HF 的发生。
我们使用分层抽样设计,对 3187 名年龄在 45 至 84 岁、无心血管疾病的多民族受试者进行了初始研究。我们使用放射免疫分析法测定基线血清 PIIINP 和 ICTP 浓度。HF 通过判断是否存在射血分数降低(HFrEF;EF<45%)和射血分数保留(HFpEF;EF≥45%)来确定。使用泊松回归计算每 SD 每个 PIIINP 和 ICTP 的 HFpEF 和 HFrEF 的发生率密度,在模型 1 中,根据年龄、种族、性别和肾功能进行调整,在模型 2 中,根据这些变量加上血压和药物进行调整。ICTP 的平均(SD)为 3.38±1.77μg/L,PIIINP 的平均(SD)为 5.48±2.04μg/L。在 HF 病例中,96 例为 HFrEF,107 例为 HFpEF。ICTP 和 PIIINP 均不能显著预测 HFrEF 的发生。在模型 1 中,低 PIIINP(下 6 个八分位数)的 13 年观察 HFpEF 每 100 人发生率为 1.65,而高 PIIINP 为 3.00(=0.002),在模型 2 中,低 PIIINP 为 1.45,高 PIIINP 为 2.59(=0.003)。对于低 ICTP(下 7 个八分位数)与高 ICTP(八分位数 8),模型 1 中的发生率密度分别为 1.79 和 3.64(=0.002),模型 2 中分别为 1.58 和 3.12(=0.002)。
作为胶原生物标志物的循环 ICTP 和 PIIINP 水平升高似乎与 HFpEF 的发生有关,但与 HFrEF 无关。