Larval Body Wall Preparation
Larval Body Wall Preparation - Related Videos
07:18
Visualization of Larval Segmental Nerves in 3rd Instar Drosophila Larval Preparations
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Cited by 13 •
2010
Drosophila melanogaster larvae provide an ideal model system to investigate the mechanisms of axonal transport within larval segmental nerves. Using this procedure, 3rd instar larvae carrying various mutations can be compared to wild type larvae.
07:49
Immunohistological Labeling of Microtubules in Sensory Neuron Dendrites, Tracheae, and Muscles in the Drosophila Larva Body Wall
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Cited by 11 •
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To understand how complex cell shapes, such as neuronal dendrites, are achieved during development, it is important to be able to accurately assay microtubule organization. Here we describe a robust immunohistological labeling method to examine microtubule organization of dendritic arborization neuron sensory dendrites, trachea, muscle, and other Drosophila larva body wall tissues.
03:16
Larval Fillet Preparation: A Method to Visualize Intact Sensory Neurons and Associated Epidermal Cells
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2023
This video describes how to prepare larval fillets used to visualize sensory dendritic arborization (da) neurons and their associated epidermal cells. The featured protocol shows in detail how to remove muscle tissue from the body wall while preserving the cells' morphology, which improves immunostaining and visualization of the otherwise obscured da neurons and epidermal cells.
08:03
In Vivo Calcium Imaging in C. elegans Body Wall Muscles
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Cited by 3 •
2019
This method provides a way to couple optogenetics and genetically encoded calcium sensors to image baseline cytosolic calcium levels and changes in evoked calcium transients in the body wall muscles of the model organism C. elegans.
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...
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Physiological saline provides the fluid environment in which the exposed muscles, nerves, and neuromuscular junctions remain suitable for laboratory examination. Maintaining the preparation in saline supports direct observation and permits subsequent microscopy, immunostaining, or electrophysiology. The saline therefore connects the dissection step to experiments that examine both synaptic structure and neuromuscular function.
Gentle stretching keeps the cuticle and attached musculature arranged for examination without removing their overall organization. This makes muscle fibers and their associated neuromuscular junctions easier to inspect while preserving the spatial relationships established in the larval body wall. As a result, researchers can relate visible synaptic patterns to the underlying organization of the nervous system.
The exposed preparation allows neuromuscular junctions to be examined directly in association with their muscle fibers and nerves. Microscopy can assess their visible organization, while immunostaining can provide structural information about selected features. Electrophysiology adds functional assessment, enabling studies that connect synaptic structure with how neuromuscular signaling operates in the larval system.
Because the preparation preserves the organization of larval nerves, muscles, and neuromuscular junctions, it provides a consistent system for examining how these structures are arranged and how they change. Researchers can apply it to neural development and synaptic plasticity, the study of activity- or experience-related changes in synapses, while also assessing genetic effects on neuromuscular organization.
The procedure begins by anesthetizing the larva and pinning it in place. Researchers then open the body wall and clear away internal tissues, taking care to leave the cuticle and musculature attached. The remaining body wall is gently stretched in physiological saline, producing an exposed preparation suitable for microscopy, immunostaining, or electrophysiological examination.
Three complementary approaches are supported by the preparation. Microscopy provides direct examination of the exposed muscles, nerves, and neuromuscular junctions. Immunostaining supports structural analysis through labeled features within the preparation. Electrophysiology examines synaptic function. Together, these methods allow investigators to compare anatomical organization with functional properties in the same biological system.
This preparation is useful when researchers need direct access to an insect larva’s neuromuscular system while retaining its organized relationship with the body wall. It supports investigations of motor control, neural development, synaptic plasticity, and genetic effects on neuromuscular organization. Its value lies in combining an accessible preparation with structural and functional laboratory analyses.