Intratracheal Instillation
Intratracheal Instillation - Related Videos
08:00
Intubation-mediated Intratracheal (IMIT) Instillation: A Noninvasive, Lung-specific Delivery System
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Cited by 34 •
2014
Intubation-mediated intratracheal (IMIT) instillation of reagents is an excellent, noninvasive method for studying respiratory disease, as well as a method for instilling therapeutic reagents directly into the lung. It is a rapid and highly reproducible method which is suitable for preclinical testing.
04:10
Noninvasive Intratracheal Lipopolysaccharide Instillation in Mice
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Cited by 6 •
2023
Here, we propose a protocol for intratracheal lipopolysaccharide (LPS) delivery via noninvasive oropharyngeal endotracheal intubation. This method minimizes the trauma of the surgical procedure for the animal and accurately delivers LPS to the trachea and then to the lungs.
08:01
Non-surgical Intratracheal Instillation of Mice with Analysis of Lungs and Lung Draining Lymph Nodes by Flow Cytometry
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Cited by 51 •
2011
We illustrate non-surgical delivery of test materials into the lungs of anesthetized mice via the trachea. This method permits lung exposure to bacterial and viral pathogens, cytokines, antibodies, beads, chemicals, or dyes. We further describe harvesting and processing of lungs and lung draining lymph nodes (LDLNs) for flow cytometry.
04:50
Direct Tracheal Instillation of Solutes into Mouse Lung
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Cited by 54 •
2010
Intratracheal instillations deliver solutes directly into the lungs. This procedure targets the delivery of the instillate into the distal regions of the lung, and is therefore often incorporated in studies aimed at studying alveoli. We provide a detailed survival protocol for performing intratracheal instillations in mice.
04:27
Intratracheal Instillation of Stem Cells in Term Neonatal Rats
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Cited by 8 •
2020
Described is a protocol for performing intratracheal transplantation of mesenchymal stromal cells (MSCs) through intratracheal injection in term neonatal rats. This technique is a clinically viable option for delivery of stem cells and drugs into neonatal rat lungs to evaluate their efficacy.
FAQs
Direct placement in the trachea allows a measured solution to bypass the nasal passages and reach the airways more immediately. From there, the substance can distribute across respiratory tissues, producing localized cellular and molecular effects. This controlled route helps researchers relate a defined exposure to subsequent pulmonary responses rather than relying on exposure through the upper airway.
Dose and volume determine how much material enters the airways and influence the consistency of exposure among experimental samples. Careful control of both variables improves reproducibility, making differences in inflammation, injury, or other responses easier to associate with the test substance. Variation in administration technique can likewise complicate interpretation by changing the delivered exposure.
The principal distinction is the delivery route. Intratracheal instillation bypasses the nasal passages, placing the substance directly into the trachea and focusing the exposure on the lower respiratory system. This makes the technique useful when researchers need a controlled pulmonary challenge and want to connect the administered material with localized effects in respiratory tissues.
A study begins by selecting and measuring the substance to be tested, such as a compound, allergen, or microbial preparation. The material is then introduced into the trachea using a carefully controlled administration technique. Researchers maintain consistent dose, volume, and delivery conditions across experimental samples so that observed pulmonary responses can be compared reliably.
This approach is useful when a study requires a controlled airway exposure to investigate inflammation, toxicology, infection, drug delivery, or lung injury. It can introduce chemically or biologically distinct test materials directly to respiratory tissues, allowing researchers to examine localized effects and evaluate how a defined exposure produces cellular, molecular, physiological, or pathological outcomes.
Results may reveal how respiratory tissues respond to a test substance through localized cellular and molecular changes, including responses associated with inflammation, infection, toxicity, or injury. Because the delivered dose and volume can be controlled, investigators can compare exposure conditions and connect the resulting pulmonary response with the administered material in experimental biology.