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Development of Obliterative Bronchiolitis in a Murine Model of Orthotopic Lung Transplantation
10:01

Development of Obliterative Bronchiolitis in a Murine Model of Orthotopic Lung Transplantation

Published on: July 10, 2012

Persistent disruption of ciliated epithelium following paediatric lung transplantation

Biju Thomas1, Paul Aurora, Helen Spencer

  • 1Immunity and Inflammation, University of Leicester, Leicester, UK.

The European Respiratory Journal
|April 24, 2012
PubMed

Insights

Ciliary dysfunction is evident in children after lung transplantation, particularly in cystic fibrosis recipients. Epithelium below the airway connection shows significant structural damage months post-surgery.

Area of Science:

  • Pulmonary Medicine
  • Transplantation Immunology
  • Pediatric Surgery

Background:

  • Ciliary function is crucial for airway clearance.
  • The impact of lung transplantation on ciliary function in pediatric recipients remains poorly understood.
  • Assessing ciliary health in different airway segments is vital for post-transplant outcomes.

Purpose of the Study:

  • To investigate ciliary function and ultrastructure in pediatric lung transplant recipients.
  • To compare ciliary parameters in the epithelium above, below, and in the periphery of the airway anastomosis.
  • To evaluate differences between cystic fibrosis and non-suppurative lung disease recipients.

Main Methods:

  • High-speed digital video imaging to assess ciliary beat frequency (CBF) and pattern.
  • Transmission electron microscopy for evaluating epithelial ultrastructure.
  • Analysis of bronchial epithelium from 10 cystic fibrosis and 10 non-suppurative lung disease pediatric lung transplant recipients.

Main Results:

  • Cystic fibrosis recipients showed reduced CBF and increased ciliary dyskinesia in the epithelium above the anastomosis compared to below.
  • Epithelium below the airway anastomosis exhibited marked ultrastructural abnormalities in both CF and NSLD groups.
  • These ultrastructural abnormalities persisted for 7-12 months post-transplant.

Conclusions:

  • Ciliary dysfunction is a characteristic of native airway epithelium in pediatric cystic fibrosis lung transplant recipients.
  • Profound ultrastructural abnormalities in the epithelium below the airway anastomosis are present in both CF and NSLD lung transplant recipients long after surgery.
  • These findings highlight the persistent impact of transplantation on airway epithelium integrity and function.

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