Endothelial progenitor cells in sudden sensorineural hearing loss

Nicola Quaranta, Alfonso Ramunni, Concetta De Luca, Paola Brescia, Porzia Dambra, Giacomina De Tullio, Angelo Vacca, Antonio Quaranta

Research output: Contribution to journalArticlepeer-review


Conclusions: Endothelial progenitor cells (EPCs) are a unique subtype of circulating cells with properties similar to those of embryonal angioblasts. They have the potential to proliferate and to differentiate into mature endothelial cells. EPCs are reduced in patients with vascular risk factors due to a decreased mobilization, an increased consumption at the site of damage or a reduced half-life. The results of this study confirm the existence of an endothelial dysfunction in patients with sudden sensorineural hearing loss (SSHL) and support the vascular involvement in the pathogenesis of the disease. Objective: The aim of this study was to evaluate the concentration of EPCs in patients affected by SSHL. Methods: Twenty-one patients affected by SSHL were evaluated. The number of EPCs was analyzed by flow cytometry analysis of peripheral blood CD34+KDR+CD133+ cells. Results: Circulating levels of EPCs were significantly lower in SSHL patients compared with controls. In particular, CD34+KDR+ cells and CD34+CD133+KDR+ cells were significantly reduced (p <0.05).

Original languageEnglish
Pages (from-to)347-350
Number of pages4
JournalActa Oto-Laryngologica
Issue number4
Publication statusPublished - Apr 2011


  • Endothelial dysfunction
  • flow cytometry
  • vascular risk factors

ASJC Scopus subject areas

  • Otorhinolaryngology


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