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Updated: Jun 28, 2026
Measuring Left Ventricular Pressure in Late Embryonic and Neonatal Mice
Published on: February 23, 2012
Measuring hemodynamic changes during mammalian development
E A V Jones1, M H Baron, S E Fraser
1Biological Imaging Center, Beckman Institute, MC139-74, California Institute of Technology, 1200 East California Blvd., Pasadena, CA 91125, USA.
Insights
Abnormal embryonic blood flow, often from heart defects, causes vascular issues. New imaging techniques allow detailed study of blood flow dynamics, revealing how mechanical forces influence vascular development in mouse embryos.
Area of Science:
- Developmental Biology
- Cardiovascular Science
- Biophysics
Background:
- Congenital cardiovascular diseases stem from abnormal embryonic vasculature, often due to heart malformations or vascular defects.
- Altered fluid dynamics secondary to cardiac defects are implicated in vascular malformations, but mechanisms remain unclear.
- Existing analytical tools are insufficient for precise understanding of flow disruptions' impact on vascular development.
Purpose of the Study:
- To quantitatively analyze hemodynamics during early organogenesis in mouse embryos.
- To establish a model system for studying cellular responses in mammalian cardiovascular development and remodeling.
- To link blood flow patterns to heart development stages and analyze mechanical force influences.
Main Methods:
- Utilized a fast line-scanning technique for quantitative hemodynamic analysis.
- Applied the technique to early organogenesis in mouse embryos.
- Enabled measurement of flow velocity profiles in newly formed vessels concurrent with initial heartbeats.
Main Results:
- Successfully measured flow velocity profiles in embryonic mouse vasculature.
- Demonstrated the ability to analyze hemodynamics from the earliest stages of heart function.
- Established a correlation between vascular blood flow patterns and the developmental stage of the heart.
Conclusions:
- Developed and validated a novel method for analyzing embryonic hemodynamics.
- Provided insights into the mechanical forces governing vascular development.
- Opened new avenues for studying the pathogenesis of congenital cardiovascular diseases.
Abstract:
The pathogenesis of many congenital cardiovascular diseases involves abnormal flow within the embryonic vasculature that results either from malformations of the heart or defects in the vasculature itself. Extensive genetic and genomic analysis in mice has led to the identification of an array of mutations that result in cardiovascular defects during embryogenesis. Many of these mutations cause secondary effects within the vasculature that are thought to arise because of altered fluid dynamics. Presumably, cardiac defects disturb or reduce flow and thereby lead to the disruption of the mechanical signals necessary for proper vascular development. Unfortunately, a precise understanding of how flow disruptions lead to secondary vasculature defects has been hampered by the inadequacy of existing analytical tools. Here, we used a fast line-scanning technique for the quantitative analysis of hemodynamics during early organogenesis in mouse embryos, and we present a model system for studying cellular responses during the formation and remodeling of the mammalian cardiovascular system. Flow velocity profiles can be measured as soon as a heart begins to beat even in newly formed vessels. These studies establish a link between the pattern of blood flow within the vasculature and the stage of heart development and also enable analysis of the influence of mechanical forces during development.
