Physiological Role of Placental Proteases: Interaction Between Pregnancy-Induced Bioactive Peptides and Proteases

Physiological Role of Placental Proteases: Interaction Between Pregnancy-Induced Bioactive Peptides and Proteases
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胎盘蛋白酶的生理作用:妊娠诱导的生物活性肽和蛋白酶之间的相互作用

DOI:
10.1507/endocrj.41.supplement_s93
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发表时间:
1994
期刊:
影响因子:
2
通讯作者:
Y. Tomoda
Y. Tomoda
中科院分区:
医学4区
文献类型:
--
作者:
S. Mizutani;K. Goto;A. Itakura;M. Furuhashi;O. Kurauchi;F. Kikkawa;Y. Tomoda

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我们在人胎盘中发现了9种蛋白酶。我们的研究表明,这些胎盘蛋白酶代谢血管活性肽和免疫调节肽,可能来源于胎儿,并保护肽激素在胎盘中的交换,以维持胎儿-胎盘的稳态。澄清了1930年Fekete发现的妊娠血清催产素酶和1947年Page发现的血管紧张素酶。此外,我们还显示了妊娠血清缓激肽酶。产妇血清蛋白酶活性的变化对监测先兆痴呆和预测分娩的开始是有用的。此外,多普勒技术评估的子宫动脉或脐动脉收缩压峰值/舒张压最低比值与子痫前期母体血清蛋白酶水平密切相关,提示胎盘蛋白酶可能通过调节子宫胎盘循环中血管活性肽的浓度来控制子宫胎盘循环。胎盘蛋白酶对免疫调节肽的降解也提示胎盘蛋白酶可能参与妊娠的免疫方面。
We found 9 proteases in human placenta. Our studies showed that these placental proteasesmetabolize vasoactive and immunomodulating peptides, possibly derived from the fetus, and protect the exchange of peptide hormones across the placenta in order to maintain feto-placental homeostasis. We clarified the pregnancy serum oxytocinase discovered by Fekete in 1930 and angiotensinase by Page in 1947, respectively. In addition we showed the pregnancy serum bradykininase. Changes in maternal serum protease activities were useful for monitoring of pre-elcampsia and predicting the onset of labor. In addition, the ratio of peak systolic over least diastolic pressure of uterine or umbilical artery assessed by the Doppler technique was closely correlated with the levels of maternal serum proteases in preeclampsia, which suggested that placental proteases might control uteroplacental circulation via the regulation of concentrations of vasoactive peptides in uteroplacental circulation. The degradation of immunomodulating peptides by placental protease also suggests the possible involvement of placental protease in the immunological aspect of pregnancy.
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