Cardiac Jelly Invasion
Cardiac Jelly Invasion - Related Videos
09:18
Assessing Bacterial Invasion of Cardiac Cells in Culture and Heart Colonization in Infected Mice Using Listeria monocytogenes
0 Views •
Cited by 4 •
2015
Listeria monocytogenes causes fetal infections in pregnant women and meningitis in susceptible populations. Subpopulations of bacteria can colonize cardiac tissue, causing myocarditis in patients and laboratory animals. Here we present a protocol that describes how to assess L. monocytogenes cardiac cell invasion in vitro and cardiac colonization in infected animals.
08:25
Visualization of Streptococcus pneumoniae within Cardiac Microlesions and Subsequent Cardiac Remodeling
0 Views •
Cited by 11 •
2015
Streptococcus pneumoniae forms discrete non-purulent microscopic lesions in the heart. Outlined is the protocol for a murine model of cardiac microlesion formation. Instruction is provided on microlesion visualization using microscopy, discrimination between early and late microlesions, and methods to detect cardiac remodeling in hearts of convalescent animals.
05:51
Mouse Echocardiography: A Non-invasive Technique to Assess Cardiac Morphology
0 Views •
2023
This video describes a protocol to perform echocardiography on a laboratory mouse.
10:16
Chick Heart Invasion Assay for Testing the Invasiveness of Cancer Cells and the Activity of Potentially Anti-invasive Compounds
0 Views •
Cited by 4 •
2015
Here, we present a protocol to study the invasion of tumor cells into living normal tissue fragments in three dimensions. This organ culture technique is mainly applied to test potentially anti-invasive drugs in vitro.
05:15
Zebrafish Electrocardiography (ECG): A Minimally Invasive Assay to Evaluate Cardiac Function
0 Views •
2023
This video shows how to perform electrocardiography (ECG or EKG) measurements, a test which measures the electrical activity of the heart, on a zebrafish.
FAQs
Localized signaling initiates an epithelial-to-mesenchymal transition (EMT), which changes endocardial cell behavior. During this transition, cells lose cell-cell attachments and acquire the capacity to migrate through cardiac jelly. Their movement into the cushions converts a signaling event into a tissue-level remodeling process. This link is important because cushion formation depends on cells reaching the correct embryonic heart region.
Cardiac jelly serves as the extracellular environment that endocardial cells must traverse during cushion formation. Its importance is therefore not limited to being present in the embryonic heart: it is the matrix through which cells migrate after losing their epithelial attachments. Following this movement, the cells populate the cushions, linking extracellular-matrix passage to the tissue remodeling required for cardiac morphogenesis.
Localized signals help initiate the cellular changes needed for invasion rather than producing an undirected response throughout the developing heart. They promote the transition in which endocardial cells lose cell-cell attachments and enter the cardiac jelly. This spatial control helps connect the location of cellular migration with proper cushion formation, making signaling a central regulator of embryonic heart morphogenesis.
The mesenchymal cells that populate the endocardial cushions have significance beyond the initial invasion event. The cushions later contribute to heart valves and septa, so the earlier migration step helps establish tissues used in shaping internal cardiac anatomy. This developmental connection explains why studying invasion can illuminate both normal morphogenesis and how early cellular errors may be associated with congenital heart defects.
An analysis of cardiac jelly invasion should distinguish the major developmental transitions rather than treating cushion formation as a single event. Researchers can examine localized signaling, loss of endocardial cell-cell attachments, movement through the matrix, and subsequent mesenchymal population of the cushions. Tracking these linked stages clarifies where tissue remodeling may diverge from the pathway needed for normal heart development.
Cardiac jelly invasion provides a model for studying how cellular migration and tissue remodeling cooperate during organ formation. In Biology, it connects a cell-level change, the epithelial-to-mesenchymal transition, with construction of larger heart structures. The process therefore helps researchers interpret developmental mechanisms and consider how disrupted signaling could contribute to congenital heart defects.