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Epidermal growth factor augments postpneumonectomy lung growth
A K Kaza1, V E Laubach, J A Kern
1Thoracic and Cardiovascular Surgery Research Laboratory, University of Virginia Health Sciences Center, Charlottesville, VA, USA.
The Journal of Thoracic and Cardiovascular Surgery
|October 24, 2000
Summary
Administering epidermal growth factor (EGF) significantly enhances compensatory lung growth after pneumonectomy in adult rats. This growth is linked to increased EGF receptor expression in the remaining lung tissue.
Area of Science:
- Pulmonary Medicine
- Regenerative Medicine
- Molecular Biology
Background:
- Epidermal growth factor (EGF) is crucial for lung development.
- Its role in adult lung regeneration after surgery is not well understood.
Purpose of the Study:
- To investigate if EGF administration can augment compensatory lung growth following pneumonectomy in adult rats.
- To explore the effect of EGF on EGF receptor expression.
Main Methods:
- Adult rats underwent either sham surgery, left pneumonectomy, or left pneumonectomy with EGF administration.
- Lung weight and volume indices were measured post-surgery.
- Epidermal growth factor receptor levels were quantified using Western blotting.
Main Results:
- Rats receiving EGF showed significantly increased lung weight and volume indices compared to controls post-pneumonectomy.
- Epidermal growth factor receptor expression was upregulated in lungs treated with exogenous EGF.
Conclusions:
- Exogenous EGF administration significantly promotes compensatory lung growth after pneumonectomy.
- This effect may involve the upregulation of EGF receptor expression in the contralateral lung.