Neonatal Mouse Hearts
Neonatal Mouse Hearts - Related Videos
03:58
Apical Resection Neonatal Mouse Model: A Surgical Procedure to Amputate the Ventricular Apex to Study Regenerative Potential in a Neonate Mouse Heart
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2025
In this video, we demonstrate the procedure to surgically remove the left ventricular apex of a neonatal mouse heart.
07:50
Isolation and Culture of Neonatal Mouse Cardiomyocytes
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Cited by 187 •
2013
Primary mouse cardiomyocyte cultures are one of the pivotal tools for the investigation of myofibrillar organization and function. The following protocol describes the isolation and culture of primary cardiomyocytes from neonatal mouse hearts. The resulting cardiomyocyte cultures may be subsequently used for a variety of biomechanical, biochemical and cell-biological assays.
06:08
Apical Resection Mouse Model to Study Early Mammalian Heart Regeneration
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Cited by 12 •
2016
A step-by-step video protocol of apical resection is demonstrated in this study. Apical resection is a recently highlighted surgical approach in mammalian heart regeneration research. This study may promote the application of apical resection as a standard methodology in research into the mechanism underlying heart regeneration.
07:38
Isolating Primary Melanocyte-like Cells from the Mouse Heart
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Cited by 4 •
2014
In this protocol, we identified a novel population of melanocyte-like cells (also known as cardiac melanocytes) in the hearts of mice and humans that contribute to atrial arrhythmia triggers in...
08:16
Neonatal Cardiac Scaffolds: Novel Matrices for Regenerative Studies
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Cited by 3 •
2016
In these studies, we provide methodology for novel, neonatal, murine cardiac scaffolds for use in regenerative studies.
FAQs
The short postnatal window captures several biological transitions at once. Cardiomyocytes mature, the heart responds to greater oxygen availability and workload, and regenerative capacity changes rapidly after birth. Studying hearts across this interval allows researchers to relate developmental changes to cardiac function and repair, rather than examining these processes only at a single mature stage.
After birth, the heart encounters increased oxygen availability and workload as its physiological environment changes. Neonatal mouse hearts provide a system for examining how cardiomyocyte maturation and cardiac function respond during this transition. These observations help connect environmental and functional changes with the rapid shift in regenerative capacity that occurs during early postnatal development.
Researchers can examine cardiac structure, electrical activity, metabolism, and gene expression as complementary indicators of maturation. Structural analyses describe tissue organization, while functional and molecular measurements reveal electrical behavior, metabolic state, and changes in gene activity. Considering these readouts together provides a broader picture of how the heart develops after birth.
Regenerative capacity changes rapidly during the postnatal period, making developmental timing an important variable in injury studies. Comparing neonatal hearts at different stages can help researchers relate tissue injury to the heart’s changing ability to repair itself. This context is central to understanding why early cardiac responses may differ as cardiomyocytes mature.
A study can obtain the tissue through dissection and then combine imaging, histology, and molecular assays. Imaging supports examination of cardiac features, histology evaluates tissue structure, and molecular assays assess biological changes such as gene expression or metabolism. Using several approaches together helps connect visible tissue findings with functional and molecular measurements.
These methods answer different but complementary questions. Imaging can document cardiac features, histology can characterize tissue organization, and molecular assays can examine gene expression or metabolic properties. Combining their results helps researchers interpret cardiac development, function, and injury more comprehensively than relying on one measurement alone.
Findings from neonatal mouse hearts provide biological context for studying congenital heart disease, myocardial injury, and regenerative medicine. Developmental measurements can show how structure, function, metabolism, and gene expression change after birth, while injury studies address changing repair capacity. Together, these applications help clarify cardiac development and the transition away from early regenerative potential.