title: Anti-proliferative effect of glucocorticoids on mesenchymal cells in juvenile angiofibromas.
abstract: BACKGROUND
  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.
  
  
  METHODS
  Juvenile angiofibroma tissue (n = 30), nasal mucosa specimens (n = 10), subepithelial stroma of nasal mucosa (n = 20), and primary fibroblasts from juvenile angiofibroma (n = 6) and nasal mucosa samples (n = 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.
  
  
  RESULTS
  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.
  
  
  CONCLUSIONS
  Expression of GRs and antiproliferative effects of GCs on juvenile angiofibroma fibroblasts offer novel options for the treatment of this unique fibrovascular tumor.
authors.affiliation: Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Erlangen, Erlangen, Germany.
authors.forename: Olaf
authors.initials: O
authors.lastname: Wendler
authors.forename: Julia
authors.initials: J
authors.lastname: Dlugaiczyk
authors.forename: Stephanie
authors.initials: S
authors.lastname: Birk
authors.forename: Bernhard
authors.initials: B
authors.lastname: Schick
mesh_terms: D018322:Angiofibroma / Q000188:drug therapy* / Q000378:metabolism; D049109:Cell Proliferation / Q000187:drug effects; D005347:Fibroblasts / Q000187:drug effects / Q000378:metabolism*; D005455:Fluorescent Antibody Technique; D005938:Glucocorticoids / Q000494:pharmacology*; D006801:Humans; D059630:Mesenchymal Stem Cells / Q000187:drug effects* / Q000378:metabolism; D009297:Nasal Mucosa / Q000187:drug effects; D011965:Receptors, Glucocorticoid / Q000378:metabolism*; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014407:Tumor Cells, Cultured
chemical_list: D005938:Glucocorticoids; D011965:Receptors, Glucocorticoid