Blood Contaminated Perfusate
Blood Contaminated Perfusate - Related Videos
05:12
Murine Nasal Lavage Fluid Collection without Blood Contamination
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2025
The present protocol describes a novel method for avoiding blood contamination in murine nasal lavage fluid (NLF). Since this method ensures the NLF collection without blood contamination, it allows for more accurate detections of immunological components and various respiratory pathogens.
05:03
Effective Rapid Blood Perfusion in Xenopus
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Cited by 1 •
2023
Presented here is an effective rapid blood perfusion protocol to prepare tissue samples from African clawed frogs for transcriptomics and proteomics studies.
07:22
Quantifying Single Microvessel Permeability in Isolated Blood-perfused Rat Lung Preparation
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Cited by 5 •
2014
The isolated blood-perfused lung preparation makes it feasible to visualize microvessel networks on the lung surface. Here we describe an approach to quantify permeability of single microvessels in isolated lungs using real time fluorescence imaging.
04:31
Assessing Vessel Perfusion via Angiography: A Technique to Introduce Contrast Agent in Descending Aorta to Visualize Blood Vessel Perfusion in Rabbit Model
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2025
This video describes the technique for performing angiography by injecting a contrast agent into the descending aorta to visualize blood vessel perfusion in a rabbit model. This technique helps to understand the perfusion in blood vessels with blockages and after treatment during recovery.
04:44
Antegrade Perfusion Model: An Ex Vivo Technique to Perfuse Isolated Mouse Heart
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2025
This video describes an antegrade perfusion technique of an isolated mouse heart during which a perfusate is injected through the left ventricle, and eventually, it perfuses the entire myocardium. This method can be used to isolate cardiomyocytes from murine models and generate decellularized hearts for further downstream applications.
FAQs
Erythrocytes in the circulating fluid can alter oxygen delivery compared with a blood-free solution, while the overall composition may also influence how oxygen moves through the perfused model. Consequently, tissue responses observed during an experiment may reflect both the biological intervention and the presence of blood-derived material. Accounting for this condition improves interpretation of tissue injury and treatment effects.
Blood-derived components can increase perfusate viscosity and introduce coagulation factors, creating conditions that may promote clot formation. These changes can affect circulation through an isolated organ, tissue, or vascular model and may alter the resulting injury pattern. Researchers therefore need to consider whether an observed perfusion change reflects the experimental treatment or physical effects associated with the contaminated fluid.
Leukocytes and plasma proteins can contribute immune-related signals that are absent from a fully blood-free perfusate. Their presence may modify inflammatory responses in the perfused tissue and complicate interpretation of cytokine-like or injury-associated changes, although the specific response depends on the experimental system. Recognizing these contributors helps distinguish tissue-generated inflammation from signaling introduced with blood-derived material.
Blood-derived material can change the environment in which a pathogen interacts with an ex vivo tissue or vascular model. Altered oxygen delivery, viscosity, coagulation, and immune signaling may each influence tissue injury or pathogen-associated observations. For infection studies, identifying and controlling this condition is therefore important when deciding whether an effect reflects pathogen activity, perfusate composition, or both.
Researchers should determine whether the circulating solution contains blood or blood-derived components and consider how that composition could affect oxygen delivery, viscosity, clot formation, and immune signaling. Comparing the perfusate condition with the intended experimental design helps identify potential confounding effects. This assessment supports more reliable interpretation of inflammatory responses, tissue injury, pathogen behavior, and treatment outcomes.
The issue becomes especially important when experiments measure inflammation, pathogen behavior, tissue injury, or responses to treatment in isolated organs, tissues, or vascular models. In these settings, blood-derived material can contribute biological signals as well as physical changes to perfusion. Researchers can use careful control or documentation of perfusate composition to separate experimental findings from blood-related artifacts.