Reduced Uterine Perfusion Pressure (RUPP) Model of Preeclampsia in Mice

PLoS One. 2016 May 17;11(5):e0155426. doi: 10.1371/journal.pone.0155426. eCollection 2016.

Abstract

Preeclampsia (PE) is a pregnancy-induced hypertension with proteinuria that typically develops after 20 weeks of gestation. A reduction in uterine blood flow causes placental ischemia and placental release of anti-angiogenic factors such as sFlt-1 followed by PE. Although the reduced uterine perfusion pressure (RUPP) model is widely used in rats, investigating the role of genes on PE using genetically engineered animals has been problematic because it has been difficult to make a useful RUPP model in mice. To establish a RUPP model of PE in mice, we bilaterally ligated ovarian vessels distal to ovarian branches, uterine vessels, or both in ICR-strain mice at 14.5 days post coitum (dpc). Consequently, these mice had elevated BP, increased urinary albumin excretion, severe endotheliosis, and mesangial expansion. They also had an increased incidence of miscarriage and premature delivery. Embryonic weight at 18.5 dpc was significantly lower than that in sham mice. The closer to the ligation site the embryos were, the higher the resorption rate and the lower the embryonic weight. The phenotype was more severe in the order of ligation at the ovarian vessels < uterine vessels < both. Unlike the RUPP models described in the literature, this model did not constrict the abdominal aorta, which allowed BP to be measured with a tail cuff. This novel RUPP model in mice should be useful for investigating the pathogenesis of PE in genetically engineered mice and for evaluating new therapies for PE.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Biomarkers
  • Blood Pressure*
  • Disease Models, Animal
  • Female
  • Hypertension, Pregnancy-Induced
  • Ligation
  • Male
  • Mice
  • Perfusion*
  • Placenta / metabolism
  • Pre-Eclampsia / diagnostic imaging
  • Pre-Eclampsia / etiology
  • Pre-Eclampsia / physiopathology*
  • Pregnancy
  • Pregnancy Outcome
  • Proteinuria
  • Regional Blood Flow*
  • Ultrasonography, Doppler, Color
  • Uterus / blood supply*
  • Uterus / diagnostic imaging

Substances

  • Biomarkers

Grants and funding

This work was supported by a Grant-In-Aid from the Japan Society of Promotion of Science (JSPS, 24659409); the Translational Research Network Program of the Ministry of Education, Culture, Sports, Science and Technology of Japan (J140001192); the Naito Foundation; and the Miyagi Kidney Foundation. These funders sponsored the study design, data collection and analysis and preparation of the manuscript.