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Article

Novel insights into the role of hypoxia‑inducible factor‑1 in the pathogenesis of human post‑intubation tracheal stenosis

  • Authors:
    • Zhigang Cai
    • Haitao Li
    • Hefang Zhang
    • Shuo Han
    • Ruijin An
    • Xixin Yan
  • View Affiliations / Copyright

    Affiliations: Department of Respiratory Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, P.R. China, Department of Endocrinology, The Traditional Chinese Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China, Department of Anatomy, Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
  • Pages: 903-908
    |
    Published online on: July 22, 2013
       https://doi.org/10.3892/mmr.2013.1595
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Abstract

Hypoxia is an important mechanism involved in dermal scar formation. Post‑intubation tracheal stenosis (PTS) has similar pathological characteristics and formation mechanisms to skin hypertrophic scars. Hypoxia‑inducible factor‑1α (HIF‑1α) is a nuclear transcription factor that facilitates the adaptation of human cells to compromised oxygen tension under hypoxic conditions. The aim of this study was to investigate whether hypoxia and HIF‑1α were involved in PTS. In the first part of our study, we observed the effects of tracheal mucosal pressure exerted by the endotracheal tube cuff and duration of intubation on tracheal stenosis using prospective methods. In the second part of our study, 24 patients were divided into three groups, according to the characteristics observed using bronchoscopy: granulation phase group, proliferative phase group and mature phase group. Tissues showing dysplasia were obtained using bronchoscopy forceps, and western blotting was performed to detect the protein expression of HIF‑1α and its target genes, including vascular endothelial growth factor (VEGF), basic fibroblast growth factor (bFGF) and transforming growth factor (TGF)‑β. In experiment one, we observed that the tracheal mucosal pressure exerted by the endotracheal tube cuff in the PTS group was significantly higher compared with that in the group without PTS, and the duration of intubation was longer compared with that in the group without PTS (P<0.05). In experiment two, we observed that the expression of HIF‑1α was highest in the granulation phase, showed a decrease in the proliferative phase and in the mature phase was significantly reduced compared with the other two phases. The results were similar for VEGF and bFGF. TGF‑β protein expression was highest in the proliferative phase, significantly reduced in the mature phase and the same trends were observed for collagen type Ⅰ and III, and α‑smooth muscle actin. HIF‑1α is involved in the pathogenesis of PTS and may be a potential key regulator in the initiation and facilitation of this process.
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Copy and paste a formatted citation
Spandidos Publications style
Cai Z, Li H, Zhang H, Han S, An R and Yan X: Novel insights into the role of hypoxia‑inducible factor‑1 in the pathogenesis of human post‑intubation tracheal stenosis. Mol Med Rep 8: 903-908, 2013.
APA
Cai, Z., Li, H., Zhang, H., Han, S., An, R., & Yan, X. (2013). Novel insights into the role of hypoxia‑inducible factor‑1 in the pathogenesis of human post‑intubation tracheal stenosis. Molecular Medicine Reports, 8, 903-908. https://doi.org/10.3892/mmr.2013.1595
MLA
Cai, Z., Li, H., Zhang, H., Han, S., An, R., Yan, X."Novel insights into the role of hypoxia‑inducible factor‑1 in the pathogenesis of human post‑intubation tracheal stenosis". Molecular Medicine Reports 8.3 (2013): 903-908.
Chicago
Cai, Z., Li, H., Zhang, H., Han, S., An, R., Yan, X."Novel insights into the role of hypoxia‑inducible factor‑1 in the pathogenesis of human post‑intubation tracheal stenosis". Molecular Medicine Reports 8, no. 3 (2013): 903-908. https://doi.org/10.3892/mmr.2013.1595
Copy and paste a formatted citation
x
Spandidos Publications style
Cai Z, Li H, Zhang H, Han S, An R and Yan X: Novel insights into the role of hypoxia‑inducible factor‑1 in the pathogenesis of human post‑intubation tracheal stenosis. Mol Med Rep 8: 903-908, 2013.
APA
Cai, Z., Li, H., Zhang, H., Han, S., An, R., & Yan, X. (2013). Novel insights into the role of hypoxia‑inducible factor‑1 in the pathogenesis of human post‑intubation tracheal stenosis. Molecular Medicine Reports, 8, 903-908. https://doi.org/10.3892/mmr.2013.1595
MLA
Cai, Z., Li, H., Zhang, H., Han, S., An, R., Yan, X."Novel insights into the role of hypoxia‑inducible factor‑1 in the pathogenesis of human post‑intubation tracheal stenosis". Molecular Medicine Reports 8.3 (2013): 903-908.
Chicago
Cai, Z., Li, H., Zhang, H., Han, S., An, R., Yan, X."Novel insights into the role of hypoxia‑inducible factor‑1 in the pathogenesis of human post‑intubation tracheal stenosis". Molecular Medicine Reports 8, no. 3 (2013): 903-908. https://doi.org/10.3892/mmr.2013.1595
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