Larval Heart Immobilization
Larval Heart Immobilization - Related Videos
09:37
Monitoring Heart Function in Larval Drosophila melanogaster for Physiological Studies
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We present various ways to monitor heart function in the larva of Drosophila for assessing questions dealing with the function of gap junctions, ion channel mutations, modulation of pacemaker activity and pharmacological studies.
06:43
Heart Dissection in Larval, Juvenile and Adult Zebrafish, Danio rerio
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A clear, standardized method for dissection and isolation of the zebrafish heart at multiple developmental stages are described. Annotation and quantification techniques are also discussed.
09:50
Live Imaging of Drosophila Larval Neuroblasts
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This protocol details a streamlined method used to conduct live cell imaging in the context of an intact larval brain. Live cell imaging approaches are invaluable for the study of asymmetric neural stem cell divisions as well as other neurogenic and developmental processes, consistently uncovering mechanisms that were previously overlooked.
08:29
Drosophila Larval IHC
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2023
Immunohistochemistry (IHC) is a technique used to visualize the presence and location of proteins within tissues. Drosophila larvae are particularly amenable to IHC because of the ease with which they can be processed for staining. Additionally, the larvae are transparent, meaning that some tissues can be visualized without the need for dissection. In IHC, proteins are ultimately detected with antibodies that specifically bind to “epitopes” within the protein of interest. In order to preserve...
06:00
Forebrain Electrophysiological Recording in Larval Zebrafish
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Cited by 55 •
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A simple method to record extracellular field potentials in the larval zebrafish forebrain is described. The method provides a robust in vivo read-out of seizure-like activity. This technique can be used with genetically modified zebrafish larvae carrying epilepsy-related genes or seizures evoked by administration of convulsant drugs.
FAQs
Stabilizing the larva relative to the imaging field reduces motion-related artifacts that can obscure cardiac movement. This allows researchers to examine heartbeat timing, cardiac rate, and rhythm with greater precision. More consistent positioning also makes it easier to compare observations across developing larvae or across experimental conditions, strengthening the reliability of microscopy-based measurements.
The stabilized preparation supports observation of several cardiac features, including heartbeat rate, rhythm, chamber structure, and blood flow. Restricting movement helps distinguish changes in these features from displacement of the whole larva within the imaging field. As a result, researchers can connect visible structural patterns with functional cardiac behavior during development.
Consistent positioning helps researchers determine whether an observed cardiac change is associated with a genetic or chemical perturbation rather than with motion during imaging. By reducing variability caused by shifting within the field, the technique supports clearer comparisons of cardiac structure, function, rate, rhythm, and blood flow across experimental conditions.
It enables repeated or closely controlled microscopic examination of how cardiac structure and function change as larvae develop. Researchers can track chamber features, heartbeat behavior, and blood flow while maintaining a stable view of the heart. These observations help relate developmental processes to altered cardiac states and to mechanisms associated with disease.
The general workflow is to temporarily restrict larval movement, position the larva consistently relative to the imaging field, and then observe the heart by microscopy. Researchers can record or quantify heartbeat rate and rhythm while examining chambers and blood flow. The resulting measurements may then be compared across developmental, genetic, or chemical conditions.
Researchers would choose it when cardiac measurements require a stable imaging field and unrestricted movement would interfere with precision. The approach is particularly relevant when examining heartbeat patterns, chamber changes, or blood flow, or when comparing responses to genetic and chemical perturbations. Its value is greatest when motion-related artifacts could complicate interpretation of cardiac observations.