Endothelial progenitor cells in sudden sensorineural hearing loss
| Autor: | Concetta De Luca, Porzia Dambra, Giacomina De Tullio, Antonio Quaranta, Alfonso Ramunni, Angelo Vacca, Paola Brescia, Nicola Quaranta |
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| Rok vydání: | 2010 |
| Předmět: |
Adult
Male medicine.medical_specialty Endothelium Hearing Loss Sensorineural CD34 Cell Count Flow cytometry Pathogenesis Internal medicine medicine Humans Progenitor cell Endothelial dysfunction Aged medicine.diagnostic_test business.industry General Medicine Hearing Loss Sudden Middle Aged medicine.disease Flow Cytometry Surgery Endothelial stem cell Adult Stem Cells medicine.anatomical_structure Endocrinology Otorhinolaryngology embryonic structures cardiovascular system Female business circulatory and respiratory physiology Blood vessel |
| Zdroj: | Acta oto-laryngologica. 131(4) |
| ISSN: | 1651-2251 |
| Popis: | 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). |
| Databáze: | OpenAIRE |
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