Intratracheal Administration
Intratracheal Administration - Related Videos
12:27
The Utilization of Oropharyngeal Intratracheal PAMP Administration and Bronchoalveolar Lavage to Evaluate the Host Immune Response in Mice
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Cited by 15 •
2014
The host immune response to pathogen infection is a tightly regulated process. Utilizing a lipopolysaccharide lung exposure model in mice, it is possible to conduct high resolution evaluations of the complex mechanisms associated with disease pathogenesis.
07:55
Intratracheal Administration of Dry Powder Formulation in Mice
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Cited by 20 •
2020
Dry powder formulations for inhalation have great potential in treating respiratory diseases. Before entering human studies, it is necessary to evaluate the efficacy of the dry powder formulation in preclinical studies. A simple and noninvasive method of the administration of dry powder in mice through the intratracheal route is presented.
10:12
A Novel Surgical Approach for Intratracheal Administration of Bioactive Agents in a Fetal Mouse Model
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Cited by 8 •
2012
We developed a novel surgical approach for intratracheal administration of bioactive agents into the mouse fetus. The delivery route is more efficient in targeting the fetal mouse lungs than the commonly used intra-amniotic injection. This procedure has to date not been described in a mouse model.
06:09
Intratracheal Inoculation of Fischer 344 Rats with Francisella tularensis
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Cited by 2 •
2017
This protocol describes intratracheal inoculations of Fischer 344 rats with Francisella tularensis. This procedure mimics pulmonary exposure of humans to this potential biothreat agent and can be used to test vaccine and therapeutic efficacy against pulmonary tularemia.
09:29
Self-administration Studies
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2023
Behavioral reinforcement induced by the rewarding feelings following substance use sometimes leads to addiction, which is demonstrated by increased self-administration. Drug self-administration studies in rodents model human behavior during drug abuse. These models are useful in understanding the neurobiological behavior of addiction in order to help scientists discover new treatments for drug dependence. This video reviews the concepts underlying self-administration studies. A general...
FAQs
After placement in the trachea, the delivered material can distribute across the bronchi and alveoli. Fluid volume affects how widely the dose spreads, while particle properties influence where the material travels within the lower respiratory tract. These variables help determine whether exposure is concentrated in particular airway regions or distributed more broadly, which can affect measured pulmonary responses.
Placing a measured dose through the trachea directs the material toward the bronchi and alveoli rather than routing it through the upper digestive tract. This supports controlled evaluation of responses within the lung itself, including treatment efficacy, inflammation, infection-related effects, toxicity, or responses to biological materials. The approach therefore connects delivery location with interpretation of local respiratory outcomes.
Respiratory movement contributes to how the delivered substance spreads after it enters the airway. Together with fluid volume and particle properties, breathing-related movement influences distribution across the bronchi and alveoli. Accounting for this interaction is important when interpreting biological results, because the observed lung response reflects not only the substance delivered but also its resulting placement within the respiratory tract.
The method uses a measured dose placed through a catheter or specialized device, giving researchers a defined amount of test material for pulmonary studies. Direct airway delivery reduces exposure to the upper digestive tract and focuses assessment on the lower respiratory tract. This controlled placement is useful when comparing local lung responses or evaluating treatment efficacy under defined experimental conditions.
A typical procedure requires a measured quantity of the drug, biological material, or other test substance, along with a catheter or specialized delivery device. The device is used to place the dose through the airway into the trachea. Subsequent distribution depends on the delivered volume, particle properties, and respiratory movement, so these conditions form essential parts of the experimental workflow.
Researchers apply intratracheal administration in studies of pulmonary drug delivery, respiratory infection, inflammation, and toxicology. It is also used to evaluate gene-based or cell-based therapies in the lung. These applications benefit from directing the test material to the lower respiratory tract, where investigators can examine local biological responses and assess whether a treatment produces the intended pulmonary effect.
This approach can support assessment of how the lung responds to a delivered substance and whether a treatment is effective at its intended respiratory target. Depending on the study, investigators may examine pulmonary delivery, infection, inflammation, toxicity, or gene and cell therapy responses. The resulting observations help connect a controlled airway dose with biological effects in the lower respiratory tract.