Related Experiment Video
Updated: May 18, 2026
Model of Ischemia and Reperfusion Injury in Rabbits
Published on: November 3, 2023
In vivo transfection of nuclear factor κB decoy protects pulmonary function against acute lung contusion in rabbits
Li Wan1, Huansen Huang, Danqing Fang
1Departments of Anesthesia, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, People's Republic of China. wanli5000cn@yahoo.com.cn
Background:
The transcription factor nuclear factor κB (NF-κB) regulates the expression of numerous proinflammatory factors that may exacerbate the response to acute injury. We investigated the effect of an inhibitory NF-κB decoy oligodeoxynucleotide on proinflammatory factor expression and pulmonary function after acute lung contusion in rabbits.
Methods:
Thirty-minutes after acute lung contusion, the NF-κB decoy or a scrambled control oligodeoxynucleotide was injected via the jugular vein. Blood samples were collected for blood gas analysis and plasma tumor necrosis factor α, interleukin 1β (IL-1β), IL-13, and IL-10 were measured by enzyme-linked immunosorbent assay at 1, 2, 3, and 4 hours after contusion. In addition, NF-κB protein expression in lung tissue was detected by Western blot analysis.
Results:
The blood PO2 decreased immediately after lung contusion, whereas PAO2 increased significantly, indicative of disrupted respiratory function. Respiratory function improved after sense NF-κB decoy injection but not after injection of the inactive scrambled form. Injection of NF-κB decoy resulted in significant inhibition of NF-κB protein expression in lung tissue and a reduction in the serum concentrations of proinflammatory cytokines tumor necrosis factor α and IL-1β compared with those of control rabbits injected with the scrambled decoy. In contrast, serum levels of the anti-inflammatory cytokines IL-10 and IL-13 increased after decoy injection compared with those of control animals and rabbits injected with the scrambled decoy.
Conclusion:
The sense NF-κB decoy protected respiratory function and reduced serum proinflammatory factor secretion after acute lung contusion. Inhibition of NF-κB may allow for preservation of pulmonary function for patients with acute lung injury.
Insights
Inhibiting nuclear factor κB (NF-κB) with a decoy oligodeoxynucleotide improved respiratory function and reduced inflammatory markers after acute lung injury in rabbits. This suggests NF-κB inhibition may preserve pulmonary function in patients with acute lung injury.
Area of Science:
- Pulmonary Medicine
- Molecular Biology
- Immunology
Background:
- Nuclear factor κB (NF-κB) activation exacerbates inflammation following acute injury.
- NF-κB regulates key proinflammatory mediators impacting acute lung injury.
- Investigating NF-κB inhibition as a therapeutic strategy for lung contusion.
Purpose of the Study:
- To evaluate the efficacy of an NF-κB decoy oligodeoxynucleotide in mitigating lung injury.
- To assess the impact of NF-κB inhibition on proinflammatory cytokine expression.
- To determine the effect on pulmonary function after acute lung contusion.
Main Methods:
- Rabbits with acute lung contusion received NF-κB decoy or scrambled control oligodeoxynucleotide intravenously.
- Blood gas analysis and serum cytokine levels (TNF-α, IL-1β, IL-10, IL-13) were measured.
- NF-κB protein expression in lung tissue was assessed via Western blot.
Main Results:
- NF-κB decoy injection improved blood oxygenation and respiratory function post-contusion.
- Decoy treatment significantly reduced NF-κB protein expression and serum levels of TNF-α and IL-1β.
- Anti-inflammatory cytokines IL-10 and IL-13 showed increased serum levels after decoy administration.
Conclusions:
- An NF-κB decoy oligodeoxynucleotide protected respiratory function in a rabbit model of lung contusion.
- NF-κB inhibition reduced pro-inflammatory cytokine secretion and enhanced anti-inflammatory responses.
- Targeting NF-κB offers a potential therapeutic approach for preserving pulmonary function in acute lung injury.
