It's really a win-lose situation: the babies are saved but they pay the price with dramatically underdeveloped lungs--forcing them to spend their early days outside the womb fighting for every breath. And now, with many of these premature babies reaching their adolescent years, clinicians and researchers are also waiting to see whether longer term health problems are going to begin occurring.
"Right now we simply don't have any treatments," says Bernard Thébaud, a clinician-scientist and neonatologist in the Department of Pediatrics. "So, if we can't prevent it, we've started to think about how we might repair it."
Using animal models, Dr. Thébaud and a team of University of Alberta researchers have taken what they say is the first important step towards a treatment--in effect, growing new blood vessels and alveoli--the tiny air sacs where gas exchange occurs between the lungs and blood vessels--in tiny rat lungs.
The results of their work were recently published in Circulation, entitled Vascular Endothelial Growth Factor Gene Therapy Increases Survival, Promotes Lung Angiogenesis, and Prevents Alveolar Damage in Hyperoxia-Induced Lung Injury: Evidence That Angiogenesis Participates in Alveolarization.
The results have caused a stir in the scientific community: In an accompanying editorial in the October 18 issue of the journal, Kurt Stenmark, a University of Colorado Divisions of Critical Care and Pulmonary Medicine researcher, said the studies "…raise new possibilities for the treatment of infants with severe chronic lung disease. It seems possible that by augmenting or restoring vascular growth, overall lu
Source:University of Alberta