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Expression of receptor for hyaluronan-mediated motility (RHAMM) in ossifying fibromas.

Abstract
Fibro-osseous lesions of the jaw are poorly understood because of a significant overlap of clinical, radiological and histological features among the various types, though they present distinct patterns of disease progression. An ossifying fibroma is associated with significant cosmetic and functional disturbances, as it shows expansive proliferation. Thus, it is important to establish a specific marker, as well as clearly elucidate its etiology for diagnosis and proper treatment. We previously established immortalized cell lines from human ossifying fibromas of the jaw and found that they highly expressed the receptor for hyaluronan (HA)-mediated motility (RHAMM). In this study, we examined the expression of RHAMM mRNA in 65 fibro-osseous lesions, including ossifying fibroma, fibrous dysplasia and osseous dysplasia, as well as 5 normal jaws, using real-time RT-PCR and immunohistochemistry assays. RHAMM mRNA and protein expression were significantly elevated in the ossifying fibroma specimens. These results suggest that detection of upregulated RHAMM expression in an ossifying fibroma assists with differential diagnosis and has a key role in elucidation of its pathophysiology.
AuthorsHiroko Hatano, Ikuko Ogawa, Hideo Shigeishi, Yasusei Kudo, Kouji Ohta, Koichiro Higashikawa, Masaaki Takechi, Takashi Takata, Nobuyuki Kamata
JournalHistology and histopathology (Histol Histopathol) Vol. 28 Issue 4 Pg. 473-80 (04 2013) ISSN: 1699-5848 [Electronic] Spain
PMID23382057 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Biomarkers, Tumor
  • Extracellular Matrix Proteins
  • Hyaluronan Receptors
  • Integrin-Binding Sialoprotein
  • RNA, Messenger
  • hyaluronan-mediated motility receptor
  • Osteocalcin
  • Alkaline Phosphatase
Topics
  • Adolescent
  • Adult
  • Aged
  • Aged, 80 and over
  • Alkaline Phosphatase (analysis)
  • Biomarkers, Tumor (analysis, genetics)
  • Bone Neoplasms (chemistry, genetics, pathology)
  • Case-Control Studies
  • Extracellular Matrix Proteins (analysis, genetics)
  • Female
  • Fibroma, Ossifying (chemistry, genetics, pathology)
  • Humans
  • Hyaluronan Receptors (analysis, genetics)
  • Immunohistochemistry
  • Integrin-Binding Sialoprotein (analysis)
  • Male
  • Middle Aged
  • Osteocalcin (analysis)
  • Prognosis
  • RNA, Messenger (analysis)
  • Real-Time Polymerase Chain Reaction
  • Up-Regulation
  • Young Adult

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