Functional phenotyping of the maternal albumin turnover in the mouse placenta by dynamic contrast-enhanced MRI

Vicki Plaks, Stav Sapoznik, Elina Berkovitz, Rebecca Haffner-Krausz, Nava Dekel, Alon Harmelin, Michal Neeman

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: The purpose of this study was to develop a tool for functional phenotyping of the maternal circulation in the mouse placenta. Procedures: In utero macromolecular dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) was performed on embryonic day 10.5 (E10.5), E13.5, and E18.5. Fluorescence analysis was also used for validation of the results. Results: The initial rate of contrast enhancement revealed an increased maternal blood volume fraction as the pregnancy progressed. Serial imaging of E10.5 and E13.5 placentas revealed a loss of contrast enhancement due to phagocytic uptake. A key application of macromolecular DCE-MRI would be to follow mouse pregnancies during fetal and placental manipulation including embryo transfer, tetraploid complementation, and fetal resorptions. We were able to resolve strain differences in ICR outbred mice carrying both ICR and C57Bl/6J embryos and to differentiate in utero resorptions from functional placentas. Conclusions: Our results highlight the importance of the functional in utero analysis of placental vascularization in physiological phenotyping of transgenic mice and suggest MRI, particularly macromolecular DCE-MRI, as a non-invasive tool for the analysis of the placenta.

Original languageEnglish
Pages (from-to)481-492
Number of pages12
JournalMolecular Imaging and Biology
Volume13
Issue number3
DOIs
StatePublished - Jun 2011

All Science Journal Classification (ASJC) codes

  • Oncology
  • Radiology Nuclear Medicine and imaging
  • Cancer Research

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