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Investigation of interleukin-2-mediated changes in blood pressure, fetal growth restriction, and innate immune activation in normal pregnant rats and in a preclinical rat model of preeclampsia
Biology of Sex Differences ( IF 7.9 ) Pub Date : 2021-01-06 , DOI: 10.1186/s13293-020-00345-0
Mark W Cunningham 1 , Lorena M Amaral 1 , Nathan E Campbell 1 , Denise C Cornelius 1, 2 , Tarek Ibrahim 1 , Venkata Ramana Vaka 1 , Babbette LaMarca 1, 3
Affiliation  

Two important clinical features of preeclampsia (PE) are hypertension and fetal growth restriction. The reduced uterine perfusion pressure (RUPP) preclinical rat model of PE exhibits both of these features. Moreover, RUPP and PE women have elevated vasoconstrictor peptide endothelin-1 (ET-1) and inflammation. Interleukin-2 (IL-2) is a cytokine that regulates NK cell activity and is elevated in miscarriage, PE, and RUPP rats. The objective of this study was to examine a role for IL-2 in NK cell activation, fetal growth restriction, and hypertension during pregnancy by either infusion of IL-2 or blockade of IL-2 (basiliximab) in normal pregnant (NP) and RUPP rats. On gestational day 14, NP and RUPP rats received low (LD), middle (MD), or high dose (HD) IL-2 (0.05, 0.10, or 0.20 ng/ml) IP or basiliximab (0.07 mg per rat) by IV infusion. On day 19, blood pressure (MAP), pup weights, and blood were collected. Basiliximab had no effect on blood pressure, however, significantly lowered NK cells and may have worsened overall fetal survival in RUPP rats. However, IL-2 LD (102 ± 4 mmHg) and IL-2 HD (105 ± 6 mmHg) significantly lowered blood pressure, ET-1, and activated NK cells compared to control RUPPs (124 ± 3 mmHg, p < 0.05). Importantly, IL-2 in RUPP rats significantly reduced fetal weight and survival. These data indicate that although maternal benefits may have occurred with low dose IL-2 infusion, negative effects were seen in the fetus. Moreover, inhibition of IL-2 signaling did not have favorable outcome for the mother or fetus.

中文翻译:

研究白细胞介素 2 介导的正常妊娠大鼠和先兆子痫大鼠模型中的血压、胎儿生长受限和先天免疫激活变化

先兆子痫 (PE) 的两个重要临床特征是高血压和胎儿生长受限。降低子宫灌注压 (RUPP) 的 PE 临床前大鼠模型表现出这两个特征。此外,RUPP 和 PE 女性的血管收缩肽 endothelin-1 (ET-1) 和炎症升高。白细胞介素 2 (IL-2) 是一种调节 NK 细胞活性的细胞因子,在流产、PE 和 RUPP 大鼠中升高。本研究的目的是通过在正常妊娠 (NP) 和RUPP 大鼠。在妊娠第 14 天,NP 和 RUPP 大鼠接受低 (LD)、中 (MD) 或高剂量 (HD) IL-2(0.05、0.10 或 0.20 ng/ml)IP 或巴利昔单抗(每只大鼠 0.07 mg)静脉输液。第 19 天,收集血压(MAP)、幼犬体重和血液。Basiliximab 对血压没有影响,然而,显着降低了 NK 细胞,并可能恶化了 RUPP 大鼠的整体胎儿存活率。然而,与对照 RUPPs 相比,IL-2 LD (102 ± 4 mmHg) 和 IL-2 HD (105 ± 6 mmHg) 显着降低了血压、ET-1 和活化的 NK 细胞 (124 ± 3 mmHg, p < 0.05) . 重要的是,RUPP 大鼠中的 IL-2 显着降低了胎儿体重和存活率。这些数据表明,虽然低剂量 IL-2 输注可能对母体有益,但对胎儿有负面影响。此外,抑制 IL-2 信号传导对母亲或胎儿没有有利的结果。显着降低 NK 细胞,并可能恶化 RUPP 大鼠的整体胎儿存活率。然而,与对照 RUPPs 相比,IL-2 LD (102 ± 4 mmHg) 和 IL-2 HD (105 ± 6 mmHg) 显着降低了血压、ET-1 和活化的 NK 细胞 (124 ± 3 mmHg, p < 0.05) . 重要的是,RUPP 大鼠中的 IL-2 显着降低了胎儿体重和存活率。这些数据表明,虽然低剂量 IL-2 输注可能对母体有益,但对胎儿有负面影响。此外,抑制 IL-2 信号传导对母亲或胎儿没有有利的结果。显着降低 NK 细胞,并可能恶化 RUPP 大鼠的整体胎儿存活率。然而,与对照 RUPPs 相比,IL-2 LD (102 ± 4 mmHg) 和 IL-2 HD (105 ± 6 mmHg) 显着降低了血压、ET-1 和活化的 NK 细胞 (124 ± 3 mmHg, p < 0.05) . 重要的是,RUPP 大鼠中的 IL-2 显着降低了胎儿体重和存活率。这些数据表明,虽然低剂量 IL-2 输注可能对母体有益,但对胎儿有负面影响。此外,抑制 IL-2 信号传导对母亲或胎儿没有有利的结果。RUPP 大鼠中的 IL-2 显着降低了胎儿体重和存活率。这些数据表明,虽然低剂量 IL-2 输注可能对母体有益,但对胎儿有负面影响。此外,抑制 IL-2 信号传导对母亲或胎儿没有有利的结果。RUPP 大鼠中的 IL-2 显着降低了胎儿体重和存活率。这些数据表明,虽然低剂量 IL-2 输注可能对母体有益,但对胎儿有负面影响。此外,抑制 IL-2 信号传导对母亲或胎儿没有有利的结果。
更新日期:2021-01-07
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