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Angiogenesis in the Ischemic Rat Lung
Published on: February 8, 2013
Angiogenesis in paediatric airway disease
John W Wilson1, Colin F Robertson
1Department of Respiratory Medicine and Monash Medical School, The Alfred Hospital, Prahran 3181, Australia. john.wilson@med.monash.edu.au
Insights
Paediatric airway diseases involve bronchial wall remodelling with vascular changes that thicken airways and reduce airflow. New therapies targeting these vascular responses may improve breathing in children.
Area of Science:
- Pulmonary Medicine
- Vascular Biology
- Pediatric Respiratory Diseases
Background:
- Paediatric airway diseases like asthma and cystic fibrosis involve characteristic bronchial wall remodelling.
- This remodelling is linked to vascular changes: increased vessel number, vasodilation, leakage, and cell migration.
- These vascular alterations contribute to airway wall thickening and reduced airflow.
Purpose of the Study:
- To explore the vascular changes in paediatric airway diseases.
- To understand the molecular regulation of these vascular responses.
- To identify potential therapeutic targets for improving airway function.
Main Methods:
- Review of inflammatory mediators and growth factors controlling vascular responses.
- Analysis of molecular pathways including gene expression, transcription, and translation.
- Examination of endothelial cell responses to inflammatory stimuli.
Main Results:
- Vascular remodelling in paediatric airways includes increased vessel proliferation, vasodilation, and permeability.
- Inflammatory mediators and growth factors orchestrate these vascular changes at a molecular level.
- Existing airway medications may influence these vascular responses.
Conclusions:
- Vascular remodelling is a key feature of paediatric airway diseases, impacting airflow.
- Targeting molecular pathways regulating vessel growth, dilation, and leakage offers potential therapeutic strategies.
- Modulating vascular responses could lead to improved airway function and treatment outcomes.
Abstract:
A number of characteristic changes occur in the bronchial wall in paediatric airway diseases. The process of remodelling is usually associated with specific changes to the vasculature, resulting in an increase in vessel numbers, vasodilatation, vessel leakage and cellular margination with transmigration to target tissues. This combined action in conditions such as asthma, cystic fibrosis and bronchiolitis lead to airway wall thickening and reduced airflow. Each component of the vascular response has been shown to be controlled by a range of inflammatory mediators and growth factors. These factors are regulated by a complex process involving gene expression, transcription and translation at the molecular level, protein release, binding to matrix elements and receptors on endothelial cells, then the endothelial response itself. A number of commonly used airway medications are potentially capable of modulating the vascular response to inflammatory stimuli. New therapies may be able to improve airflow through better regulation of vessel growth, dilatation and leakage in the airway wall.
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