title: [Overexpression of c-erbB-2 proto-oncogene product in chondrosarcomas].
abstract: The c-erbB-2 proto-oncogene plays an important role in the regulation of cellular proliferation and differentiation. Overexpression of c-erbB-2 proto-oncogene product in 40 cases of chondrosarcomas was investigated using ABC immunoperoxidase method. Overexpression of c-erbB-2 product was present in 36/40 (90%) chondrosarcomas and in 1/9 (11%) benign cartilage tumors. Normal cartilage tissue gave negative results. These findings indicate that c-erbB-2 proto-oncogene product has practical value in diagnosing chondrosarcomas. c-erbB-2 positive grading showed a significant inverse correlation with the histopathological grading. Chondrosarcomas with high histological grade and poor differentiation showed a bias toward a decline in expression of c-erbB-2 product. The c-erbB-2 proto-oncogene product may be used as a differentiation marker.
authors.affiliation: Department of Pathology, 309th Hospital.
authors.forename: N
authors.initials: N
authors.lastname: Li
authors.forename: L H
authors.initials: LH
authors.lastname: Shen
authors.forename: Q F
authors.initials: QF
authors.lastname: Zhu
mesh_terms: D000328:Adult; D001859:Bone Neoplasms / Q000235:genetics* / Q000473:pathology; D002813:Chondrosarcoma / Q000235:genetics* / Q000473:pathology; D066246:ErbB Receptors / Q000235:genetics*; D005260:Female; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D008297:Male; D008875:Middle Aged; D000090063:Proto-Oncogene Mas; D011518:Proto-Oncogene Proteins / Q000235:genetics*; D011519:Proto-Oncogenes; D018719:Erb-b2 Receptor Tyrosine Kinases
chemical_list: D066246:ErbB Receptors; D000090063:Proto-Oncogene Mas; D011518:Proto-Oncogene Proteins; D018719:Erb-b2 Receptor Tyrosine Kinases; C000715470:MAS1 protein, human