Hemorrhage Model
Hemorrhage Model - Related Videos
07:57
Integrated Compensatory Responses in a Human Model of Hemorrhage
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Cited by 11 •
2016
The purpose of this protocol is to demonstrate the techniques for measuring compensatory responses to reduced central blood volume using lower body negative pressure as a noninvasive experimental model of human hemorrhage which can be used to quantify the total integration of compensatory mechanisms to blood volume deficit in humans.
02:29
Modeling Drug-Induced Hemorrhage in Zebrafish Larva
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2025
In this video, fertilized zebrafish embryos are dechorionated under a stereo microscope and then exposed to a cholesterol synthesis inhibitor, leading to the development of blood vessel ruptures and brain hemorrhages in the larvae. Hemorrhagic larvae, identifiable by distinct red spots, are subsequently separated under a microscope for further analysis.
16:31
Fixed Volume or Fixed Pressure: A Murine Model of Hemorrhagic Shock
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Cited by 24 •
2011
The Hemorrhagic Shock model has been a reliable and reproducible resource facilitating the identification and understanding of signaling cascades associated with inflammation and end-organ damage after trauma. This article provides a step-by-step description of surgical and mechanical aspects associated with the Hemorrhagic Shock experimental procedure in mice.
10:44
Modeling Intracerebral Hemorrhage in Mice: Injection of Autologous Blood or Bacterial Collagenase
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Cited by 60 •
2012
Clinically relevant animal models of intracerebral hemorrhage (ICH) are needed to extend our knowledge of hemorrhagic stroke and to examine novel therapeutic strategies. In this study, we describe and evaluate two ICH models that implement unilateral injections of either autologous whole blood or bacterial collagenase into the basal ganglia (corpus striatum) of mice.
04:43
Induction of a Subarachnoid Hemorrhage in a Mouse Model through Endovascular Perforation
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2025
The video demonstrates the induction of subarachnoid hemorrhage via endovascular perforation in a mouse model. An incision is made in the neck region of the anesthetized mouse to access the common carotid artery and its bifurcation. A filament is inserted through the arteries to perforate an intracranial artery branch, inducing subarachnoid hemorrhage.
FAQs
A Hemorrhage Model can separate several linked consequences of bleeding, including hematoma formation, tissue compression, inflammatory signaling, blood-brain barrier disruption, and neuronal damage. Examining these processes together helps investigators determine how the initial bleed progresses into neurological dysfunction. Following changes over time is especially important because the model can reveal whether injury mechanisms emerge simultaneously or develop sequentially.
Hematoma formation creates a localized accumulation of blood that can compress surrounding tissue. This physical effect provides a controlled way to examine how pressure and spatial proximity to the bleed relate to neural damage and dysfunction. By defining the injury site and evaluating tissue responses, investigators can compare how different locations influence the consequences of intracerebral bleeding.
Inflammatory signaling and blood-brain barrier disruption represent distinct biological responses to blood entering or surrounding brain tissue. Measuring both allows a study to examine more than the immediate structural effects of a hematoma, including changes that may accompany neuronal damage. These outcomes help identify disease mechanisms and potential therapeutic targets within the broader progression of hemorrhagic injury.
The principal distinction is the location represented by the model: intracerebral hemorrhage concerns bleeding within brain tissue, whereas subarachnoid hemorrhage concerns bleeding around the brain. That location affects how investigators frame tissue injury, hematoma formation, and neurological dysfunction. Selecting the model that matches the hemorrhage type improves interpretation and supports more relevant comparisons between experimental findings.
Model selection should match the hemorrhage type, the intended injury site, the timing of observations, and the assessment methods. These choices determine which mechanisms and outcomes can be examined and how consistently results can be compared across studies. A carefully matched design also improves the usefulness of findings when researchers evaluate therapeutic targets or consider clinical relevance.
A study typically establishes bleeding by reproducing vessel rupture or placing blood components into a defined brain region. Investigators then control the injury site and observation timing while assessing outcomes such as hematoma formation, tissue compression, inflammatory signaling, barrier disruption, neuronal damage, and neurological dysfunction. This workflow connects the induced injury with measurable disease mechanisms and functional consequences.
These experiments can reveal how blood-related injury develops, which mechanisms accompany neurological dysfunction, and which processes may represent therapeutic targets. Functional and tissue-based assessments allow investigators to relate biological changes to outcomes over time. Because the model offers controlled analysis of hemorrhagic injury, it can support comparisons among studies and help move findings toward clinical treatment.