Delayed airway epithelial repair is correlated with airway obstruction in young adults born very preterm

Area of Science:

• Respiratory Medicine
• Cell Biology
• Neonatology

Background:

• Preterm birth is a leading cause of neonatal morbidity and mortality.
• Long-term respiratory complications are common in individuals born preterm.
• The role of epithelial barrier function in these long-term outcomes is not fully understood.

Purpose of the Study:

• To investigate nasal epithelial cell repair in young adults with a history of very preterm birth.
• To explore the correlation between epithelial repair capacity and lung function.

Main Methods:

• Nasal epithelial cells were isolated from young adults with and without a history of very preterm birth.
• A scratch-wounding assay was used to assess in vitro cell migration and wound closure.
• Lung function tests were performed on the study participants.

Main Results:

• Nasal epithelial cells from individuals with a history of very preterm birth exhibited significantly delayed wound closure compared to controls.
• The rate of epithelial repair correlated positively with measures of lung function.

Conclusions:

• Impaired epithelial barrier repair in the nasal mucosa may be a persistent consequence of very preterm birth.
• Epithelial barrier integrity could be a contributing factor to the pathogenesis of preterm-associated lung disease.
• Further research is warranted to explore therapeutic strategies targeting epithelial repair.