Histologic changes of mesenchymal stem cell repair of tympanic membrane perforation

Stefania Goncalves, Esperanza Bas Infante, Michael Langston, Ariel Grobman, Bradley J Goldstein, Simon I Angeli

Research output: Contribution to journalReview articlepeer-review

6 Scopus citations


Conclusion: Mesenchymal stem-cells are good candidates for cell-therapy of chronic tympanic membranes perforations. Objectives: To determine the effects of cell-based therapy in tympanic membrane perforations. Methods: Young C57BL/6 mice were anesthetized with intraperitoneal administration of ketamine and xylazine and randomly divided into three groups (n = 4 ears/group) that underwent bilateral sub-total pars tensa perforations of equal sizes using a sterile 27-gauge needle under a surgical microscope. Six-to-eight hours after injury, one group of mice did not receive treatment (acute perforation control), and the last two groups were treated with BM-MSCs embedded within HA scaffolds previously soaked in PBS to rinse culture media residues to avoid confounders and were euthanized 1 or 2 weeks after treatment. Results: Untreated tympanic membrane perforations developed a hyper-cellular infiltrate surrounding the injury site, while BM-MSC treated eardrums showed a reduced inflammatory response after the first week and a restoration of the trilaminar configuration 2 weeks after treatment, mimicking a normal tympanic membrane.

Original languageEnglish (US)
Pages (from-to)411-416
Number of pages6
JournalActa Oto-Laryngologica
Issue number4
StatePublished - Apr 3 2017


  • chronic tympanic membrane perforations
  • stem cells
  • Tympanic membrane
  • wound healing

ASJC Scopus subject areas

  • Otorhinolaryngology


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