关键词: fetal growth restriction placental insufficiency preeclampsia pregnancy reduced uterine perfusion pressure

Mesh : Fetal Growth Retardation / physiopathology Female Pregnancy Pre-Eclampsia / physiopathology diagnosis Animals Disease Models, Animal Mice Uterus / blood supply physiopathology Blood Pressure Vascular Endothelial Growth Factor Receptor-1 / blood metabolism Fetal Weight

来  源:   DOI:10.1152/ajpheart.00056.2024

Abstract:
The reduced uterine perfusion pressure (RUPP) model is frequently used to study preeclampsia and fetal growth restriction. An improved understanding of influential factors might improve reproducibility and reduce animal use considering the variability in RUPP phenotype. We performed a systematic review and meta-analysis by searching Medline and Embase (until 28 March, 2023) for RUPP studies in murine. Primary outcomes included maternal blood pressure (BP) or proteinuria, fetal weight or crown-rump length, fetal reabsorptions, or antiangiogenic factors. We aimed to identify influential factors by meta-regression analysis. We included 155 studies. Our meta-analysis showed that the RUPP procedure results in significantly higher BP (MD = 24.1 mmHg; [22.6; 25.7]; n = 148), proteinuria (SMD = 2.3; [0.9; 3.8]; n = 28), fetal reabsorptions (MD = 50.4%; [45.5; 55.2]; n = 42), circulating soluble FMS-like tyrosine kinase-1 (sFlt-1) (SMD = 2.6; [1.7; 3.4]; n = 34), and lower fetal weight (MD = -0.4 g; [-0.47; -0.34]; n = 113. The heterogeneity (variability between studies) in primary outcomes appeared ≥90%. Our meta-regression identified influential factors in the method and time point of BP measurement, randomization in fetal weight, and type of control group in sFlt-1. The RUPP is a robust model considering the evident differences in maternal and fetal outcomes. The high heterogeneity reflects the observed variability in phenotype. Because of underreporting, we observed reporting bias and a high risk of bias. We recommend standardizing study design by optimal time point and method chosen for readout measures to limit the variability. This contributes to improved reproducibility and thereby eventually improves the translational value of the RUPP model.
摘要:
背景:子宫灌注压降低(RUPP)模型经常用于研究先兆子痫和胎儿生长受限。考虑到RUPP表型的变异性,对影响因素的更好理解可能会提高可重复性并减少动物使用。
方法:我们通过搜索Medline和Embase(直到2023年3月28日)对小鼠RUPP研究进行了系统评价和荟萃分析。主要结局包括:母体血压(BP)或蛋白尿,胎儿体重或冠臀部长度,胎儿再吸收,或抗血管生成因子。我们旨在通过荟萃回归分析来确定影响因素。
结果:我们纳入了155项研究。我们的荟萃分析显示,RUPP程序导致明显更高的血压(MD24.1mmHg;[22.6;25.7];n=148),蛋白尿(SMD2.3;[0.9;3.8];n=28),胎儿再吸收(MD50.4%;[45.5;55.2];n=42),循环可溶性FMS样酪氨酸激酶-1(sFlt-1)(SMD2.6;[1.7;3.4];n=34),和较低的胎儿体重(MD-0.4g;[-0.47;-0.34];n=113。主要结局的异质性(研究之间的变异性)出现≥90%。我们的元回归确定了BP测量方法和时间点的影响因素,胎儿体重随机化,和sFlt-1对照组的类型。
结论:考虑到母婴结局的明显差异,RUPP是一个稳健的模型。高度异质性反映了观察到的表型变异性。由于漏报,我们观察到报告偏倚和偏倚风险较高.我们建议通过最佳时间点和选择用于读出测量的方法来标准化研究设计,以限制变异性。这有助于改善再现性,从而最终改善RUPP模型的平移值。
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