Related Experiment Video
Updated: Jul 8, 2026
04:21
A Minimally Invasive Method for Intratracheal Instillation of Drugs in Neonatal Rodents to Treat Lung Disease
Published on: August 4, 2021
Intratracheally administered corticosteroids improve lung function in meconium-instilled rabbits
1Department of Physiology, Jessenius Faculty of Medicine, Comenius University, Martin, Slovakia. mokra@jfmed.uniba.sk
Summary
Local budesonide administration improved lung function in rabbits with meconium aspiration syndrome. This corticosteroid treatment reduced lung injury, inflammation, and airway hyperreactivity, offering a potential therapeutic strategy.
Area of Science:
- Pulmonary Medicine
- Pharmacology
- Critical Care Medicine
Background:
- Meconium aspiration syndrome (MAS) is a severe respiratory complication in newborns.
- Acute lung injury (ALI) is a major cause of mortality in MAS.
- Corticosteroids are being investigated for their potential to mitigate lung injury.
Purpose of the Study:
- To evaluate the efficacy of local budesonide administration in treating meconium-induced lung injury.
- To assess the impact of budesonide on pulmonary function and inflammatory markers in a rabbit model of MAS.
Main Methods:
- Adult rabbits were instilled with meconium and ventilated.
- Budesonide was administered intratracheally at two doses (0.25 mg/kg) via high-frequency jet ventilation.
- Pulmonary function, shunts, pressures, lung edema, airway reactivity, and inflammatory markers were measured.
Main Results:
- Budesonide significantly improved gas exchange and reduced pulmonary shunts and pressures.
- Treatment decreased meconium-induced lung edema, airway hyperreactivity, and neutrophil infiltration.
- Oxidative stress markers in lung tissue were diminished following budesonide administration.
Conclusions:
- Intratracheal budesonide effectively ameliorated acute lung injury associated with meconium aspiration in rabbits.
- Budesonide demonstrated anti-inflammatory and protective effects on lung tissue.
- Local corticosteroid therapy may be a promising approach for managing MAS-related lung injury.
Related Concept Videos
01:25Antiasthma Drugs: Inhaled Corticosteroids and Glucocorticoids
Inhaled corticosteroids (ICS) are anti-inflammatory drugs used primarily in treating persistent asthma and providing long-term maintenance. They target the bronchial mucosa, the lining of the airways, to control inflammation, a critical factor in asthma progression and exacerbation.
ICS work through a multifaceted mechanism of action. They suppress the inflammatory response caused by the proliferation of TH cells. They also reduce the transcription of the IL-2 gene, which is involved in the...
ICS work through a multifaceted mechanism of action. They suppress the inflammatory response caused by the proliferation of TH cells. They also reduce the transcription of the IL-2 gene, which is involved in the...
01:23Inhaled Medications
Inhaled medications are crucial for managing chronic obstructive pulmonary disease (COPD) and asthma. They are essential for effective treatment and control, ensuring optimal respiratory health and well-being. Inhaled medication delivers drugs directly to the lungs, providing a rapid onset of action and reducing systemic side effects compared to oral or injectable medications. Three primary types of inhalation devices are used to administer these medications: nebulizers, metered-dose inhalers...