Stem cells and bronchial stump healing.

J Thorac Cardiovasc Surg

Thoracic Surgery Department, Thoracic Surgery, Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, Spain.

Published: December 2010

AI Article Synopsis

  • Bronchial stump dehiscence is a serious complication after lung surgery, with high mortality rates, making effective healing methods critical.
  • The study involved 36 rats undergoing left pneumonectomy, with half receiving bone marrow-derived stem cells to assess their impact on healing at the bronchial stump after surgery.
  • Results indicated that rats treated with stem cells experienced fewer adhesions, reduced inflammation, and significantly improved tissue regeneration compared to the control group.

Article Abstract

Objective: Bronchial stump dehiscence is still the most feared complication for the thoracic surgeon, with mortality rates ranging from 25% to 75%. This study reports the histologic effect of adult stem cells in the healing process of the bronchial stump after lung resection.

Methods: A left pneumonectomy was performed in 36 Wistar rats. Half of them received previously labeled bone marrow-derived stem cells applied to the bronchial stump. In each group, 7 rats were sacrificed on day 7 and 11 rats were sacrificed on day 21. Macroscopic variables and histopathologic features were analyzed.

Results: On days 7 and 21, there were fewer adhesions in the stem cell group (P = .042 and .031, respectively). Bronchial stump restitutio ad integrum on day 21 was found predominantly in rats from the stem cell group (P = .012). At that time, the same group showed significantly less inflammation in every layer of the stump (P < .050).

Conclusions: Bone marrow-derived stem cells administered topically on a bronchial stump are able to migrate, reach the bronchial wall, and participate in the healing process. This induces fewer adhesions, less inflammatory response, and better regeneration of the tissue.

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Source
http://dx.doi.org/10.1016/j.jtcvs.2010.03.009DOI Listing

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