Media type: E-Article Title: Anti‐proliferative effect of glucocorticoids on mesenchymal cells in juvenile angiofibromas Contributor: Wendler, Olaf; Dlugaiczyk, Julia; Birk, Stephanie; Schick, Bernhard imprint: Wiley, 2012 Published in: Head & Neck Language: English DOI: 10.1002/hed.21966 ISSN: 1043-3074; 1097-0347 Keywords: Otorhinolaryngology Origination: Footnote: Description: <jats:title>Abstract</jats:title><jats:sec><jats:title>Background</jats:title><jats:p>Glucocorticoids (GCs) not only regulate metabolic and inflammatory mechanisms, but also are known to suppress tumor growth. Despite previous detection of glucocorticoid receptors (GRs) in juvenile angiofibromas, their distribution and function have not further been studied.</jats:p></jats:sec><jats:sec><jats:title>Methods</jats:title><jats:p>Juvenile angiofibroma tissue (<jats:italic>n</jats:italic> = 30), nasal mucosa specimens (<jats:italic>n</jats:italic> = 10), subepithelial stroma of nasal mucosa (<jats:italic>n</jats:italic> = 20), and primary fibroblasts from juvenile angiofibroma (<jats:italic>n</jats:italic> = 6) and nasal mucosa samples (<jats:italic>n</jats:italic> = 6) were analyzed by quantitative reverse transcriptase‐polymerase chain reaction (RT‐PCR) and immunofluorescence staining. The antiproliferative effect of GCs (dexamethasone, prednisolone, and hydrocortisone) in vitro was assessed using a bromdeoxyuridine (BrdU) assay.</jats:p></jats:sec><jats:sec><jats:title>Results</jats:title><jats:p>An upregulation of GR transcripts and protein was shown in juvenile angiofibroma tissue and primary mesenchymal cells compared to nasal mucosa. Application of GCs resulted in a significantly higher antiproliferative effect on juvenile angiofibroma versus nasal mucosa fibroblasts in vitro.</jats:p></jats:sec><jats:sec><jats:title>Conclusion</jats:title><jats:p>Expression of GRs and antiproliferative effects of GCs on juvenile angiofibroma fibroblasts offer novel options for the treatment of this unique fibrovascular tumor. © 2012 Wiley Periodicals, Inc. Head Neck, 2012</jats:p></jats:sec>