Cited by 57Pregnancy and preeclampsia studiesBirth, Development, and HealthAngiogenesis and VEGF in Cancer

Expansion of the fetoplacental vasculature in late gestation is strain dependent in mice

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Rennie, Monique Y., Detmar, Jacqui, Whiteley, Kathie J., Jurisicova, Andrea, Adamson, S. Lee, Sled, John G.·2012·American Journal of Physiology-Heart and Circulatory Physiology

Abstract

How the fetoplacental arterial tree grows and expands during late gestational development is largely unknown. In this study, we quantified changes in arterial branching in the fetal exchange region of the mouse placenta during late gestation, when capillarization increases rapidly. We studied two commonly used mouse strains, CD1 and C57Bl/6 (B6), at embryonic days (E)13.5, 15.5, and 17.5. B6 mice differ from CD1 mice by exhibiting a blunted fetal weight gain in late gestation. We found that B6 capillarization and interhemal membrane thinning were reduced and placental hypoxia-inducible factor-1α and VEGF-A expression were higher than CD1 near term. Automated vascular segmentation of microcomputed tomography data sets revealed that the number of arterial vessels ≥50 μm remained constant during late gestation in both strains, despite large increases in downstream capillary volume quantified by stereology (+65% in B6 mice and +200% in CD1 mice). Arterial diameters expanded in both strains from E13.5 to E15.5; however, diameters continued to expand to E17.5 in B6 mice only. The diameter scaling coefficient at branch sites was near optimal (−3.0) and remained constant in CD1 mice, whereas it decreased, becoming abnormal, in B6 mice at term (−3.5 ± 0.2). Based on arterial tree geometry, resistance remained constant throughout late gestation (∼0.45 mmHg·s·μl−1) in CD1 mice, whereas it decreased by 50% in late gestation in B6 mice. Quantification of the fetoplacental vasculature revealed significant strain-dependent differences in arterial and capillary expansion in late gestation. In both strains, enlargement of the fetoplacental arterial tree occurred primarily by increased arterial diameters with no change in segment numbers in late gestation.

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Crossref · 10.1152/ajpheart.00776.2011

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  • Inter- and intra-species crosses between breeds of several species have shown that the mother can constrain the fetal genetic drive for growth while the fetal genome can influence the mother to provide more resources with consequences for fetal growth and pregnancy outcome.

    “Inter-and intra-species crosses between breeds of several species have shown that the mother can constrain the fetal genetic drive for growth while, conversely, the fetal genome can influence the mother to provide more resources with consequences for fetal growth and pregnancy outcome (8,457,551).”

    From Placental Origins of Chronic Disease (2016) · cites this paper as [457]

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  1. [20]Detmar J Regulation of Cell Death During Murine Placental Development and Its Dysregulation Due to Xenobiotic Exposure (PhD dissertation) Toronto, ON, Canada: University of Toronto, 2007

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Authors
Rennie, M. Y., Detmar, J., Whiteley, K. J., Jurisicova, A., Adamson, S. L., & Sled, J. G.
Affiliations
  • Hospital for Sick Children (CA)
  • Mount Sinai Hospital (CA)
Corresponding author
Adamson, S. Lee
Venue
American Journal of Physiology-Heart and Circulatory Physiology
Published
2012-03-15
Volume
302
Issue
6
Pages
H1261-H1273
ISSN
  • 0363-6135 (ISSN-L)
  • 1522-1539
OpenAlex
W1988621470
Cited by
57
References
62
Citations by year
2026: 1 · 2025: 1 · 2024: 2 · 2023: 3 · 2022: 2 · 2021: 8 · 2020: 4 · 2019: 5 · 2018: 1 · 2017: 8 · 2016: 5 · 2015: 6 · 2014: 4 · 2013: 7
FWCI
6.53
Type
journal article
Language
en
Open access
Locations
  • American Journal of Physiology-Heart and Circulatory Physiology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Canadian Institutes of Health Research (MOP93618, MOP86734)
Topics
  • Health Sciences › Medicine › Obstetrics and Gynecology › Pregnancy and preeclampsia studies
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Birth, Development, and Health
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Angiogenesis and VEGF in Cancer
Keywords
late pregnancy, arterial branching, capillarization, vascular resistance, strain differences, C57BL/6 mice, ICR mice, VEGF-A, fetal weight gain, placental development
MeSH terms
Animals, Arteries, Capillaries, Female, Fetus, Genotype, Gestational Age, Hemodynamics, Immunohistochemistry, Litter Size, Mice, Inbred C57BL, Microscopy, Electron, Scanning, Phenotype, Placenta, Pregnancy, Species Specificity, Blotting, Western, Neovascularization, Physiologic, Fetal Weight, Placental Circulation, Vascular Endothelial Growth Factor A, Mice, Hypoxia-Inducible Factor 1, alpha Subunit, X-Ray Microtomography

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