title: Routine immunohistochemical characterization of short term in vitro explants from human intracranial tumours.
abstract: 35 intracranial tumours, 18 gliomas, 12 meningiomas, one neurilemmoma (neurinoma), one malignant melanoma and two metastases were successfully grown in-vitro and were submitted to immunocytochemical reactions, including cytokeratin, glial fibrillary acid protein (GFAP), vimentin, fibronectin, S-100 protein, neurofilament proteins, neuron-specific enolase (NSE) and basic myelin protein (MBP). Cytokeratin in metastases, GFAP and vimentin in gliomas, vimentin in meningiomas were consistently positive. S-100 protein was weakly and partially positive in gliomas, meningiomas, the neurilemmoma and malignant melanoma. Positive demonstration of fibronectin within cells was interpreted as a consequence of phagocytosis, except in meningiomas where fibronectin expression next to cell membranes seemed genuine. All other tested markers proved negative. The most important result seems to be that cells expressed markers irrespective of cellular shape and cytological morphology. It can be concluded that the cellular population as a whole consisted of tumour cells during the short time under observation and that supportive cell contamination during this early growth period was negligible.
authors.affiliation: Department of Neuropathology, Medical Center of Pathology, University of Marburg, FRG.
authors.forename: H D
authors.initials: HD
authors.lastname: Mennel
authors.forename: U
authors.initials: U
authors.lastname: Berweiler-Nippert
authors.forename: H
authors.initials: H
authors.lastname: Lorenz
authors.forename: H
authors.initials: H
authors.lastname: Geissel
mesh_terms: D014408:Biomarkers, Tumor / Q000032:analysis*; D001932:Brain Neoplasms / Q000737:chemistry* / Q000473:pathology / Q000556:secondary; D005353:Fibronectins / Q000032:analysis; D005904:Glial Fibrillary Acidic Protein / Q000032:analysis; D005910:Glioma / Q000737:chemistry* / Q000473:pathology; D006801:Humans; D007150:Immunohistochemistry; D007381:Intermediate Filament Proteins / Q000032:analysis; D008545:Melanoma / Q000737:chemistry / Q000473:pathology; D008579:Meningioma / Q000737:chemistry* / Q000473:pathology; D004676:Myelin Basic Protein / Q000032:analysis; D009442:Neurilemmoma / Q000737:chemistry / Q000473:pathology; D010751:Phosphopyruvate Hydratase / Q000032:analysis; D009418:S100 Proteins / Q000032:analysis; D014746:Vimentin / Q000032:analysis
chemical_list: D014408:Biomarkers, Tumor; D005353:Fibronectins; D005904:Glial Fibrillary Acidic Protein; D007381:Intermediate Filament Proteins; D004676:Myelin Basic Protein; D009418:S100 Proteins; D014746:Vimentin; D010751:Phosphopyruvate Hydratase