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Related Concept Videos

Asthma I: Introduction01:28

Asthma I: Introduction

Asthma is a chronic inflammatory disorder of the airways characterized by variable airflow obstruction and heightened bronchial responsiveness to a wide range of triggers. The underlying inflammation leads to airway swelling, mucus hypersecretion, and smooth muscle constriction, all of which narrow the airway lumen and impede airflow. Clinically, asthma presents with recurrent episodes of wheezing, shortness of breath, chest tightness, and coughing, symptoms that typically vary in intensity and...

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Related Experiment Video

Updated: Jun 21, 2026

Primary Human Bronchial Epithelial Cells Grown from Explants
14:32

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Published on: March 27, 2010

Tissue-engineered human asthmatic bronchial equivalents.

Jean-Sébastien Paquette1, Véronique Moulin, Pierrot Tremblay

  • 1Laboratoire de Génie Tissulaire/LOEX, Hôpital de l'Enfant-Jésus du CHA, Québec, Canada.

European Cells & Materials
|March 12, 2004
PubMed
Summary
This summary is machine-generated.

Bioengineered bronchial equivalents (BE) using asthmatic cells show detachment in vitro. These asthma models offer insights into disease mechanisms.

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Area of Science:

  • Biomedical Engineering
  • Cell Biology
  • Respiratory Medicine

Background:

  • Human bronchial epithelial cells (HBEC) and fibroblastic cells (HBFC) are crucial for respiratory tissue engineering.
  • Bioengineered bronchial equivalents (BE) mimic human bronchi structure and function in vitro.
  • Previous studies focused on BE derived from non-asthmatic cells.

Purpose of the Study:

  • To comparatively analyze BE produced from asthmatic and non-asthmatic cells.
  • To evaluate the in vitro behavior of asthmatic cells in BE models.
  • To establish a relevant in vitro model for studying asthma.

Main Methods:

  • Isolation of HBEC and HBFC from asthmatic and non-asthmatic volunteers.
  • Culture of BE using HBEC on a mesenchymal layer seeded with HBFC.
  • Maintenance of BE for at least 15 days with assessment of cell differentiation and tissue organization.

Main Results:

  • BE derived from asthmatic HBEC and non-asthmatic HBFC showed delayed confluency.
  • Asthmatic BE cultures exhibited detachment from the matrix over time.
  • HBEC differentiation into ciliated and goblet cells was observed in both asthmatic and non-asthmatic BE.

Conclusions:

  • Asthmatic BE models demonstrate distinct cellular behaviors compared to non-asthmatic BE.
  • The observed detachment of asthmatic cells suggests potential mechanisms relevant to asthma.
  • These BE provide a valuable in vitro platform for investigating asthma pathogenesis.