title: [Detection of epidermal growth factor-like factors in various skin tumors].
abstract: EGF-like factors (EGF-F) in tissue extracts make use of the EGF receptor system (EGF-R) in order to transmit biological signals. EGF-F, which partly show transforming activities, can be detected with the help of an EGF receptor assay. We measured the EGF concentrations in extracts of 25 benign, 5 semi-malignant, and 13 malignant skin tumors, as well as in 5 biopsies of normal skin. The highest amounts of EGF-F were found in malignant melanoma (10 ng/mg) and in squamous cell carcinoma (7 ng/mg). The EGF-F concentrations in benign and semi-malignant tumors, in contrast, were similar to those found in normal skin (up to 4 ng/mg). Isoelectric focusing (IEF) revealed that the activity of EGF-F malignant tumors consists of various components.
authors.affiliation: Hautklinik, Städtischen Kliniken Darmstadt.
authors.forename: M
authors.initials: M
authors.lastname: Hagedorn
authors.forename: T
authors.initials: T
authors.lastname: Bauknecht
mesh_terms: D014408:Biomarkers, Tumor / Q000032:analysis*; D001706:Biopsy; D002455:Cell Division / Q000502:physiology*; D003937:Diagnosis, Differential; D004815:Epidermal Growth Factor / Q000032:analysis*; D066246:ErbB Receptors / Q000032:analysis*; D006801:Humans; D007525:Isoelectric Focusing; D012867:Skin / Q000473:pathology; D015291:Transforming Growth Factors / Q000032:analysis*
chemical_list: D014408:Biomarkers, Tumor; D004815:Epidermal Growth Factor; D015291:Transforming Growth Factors; D066246:ErbB Receptors
vernacular_title: Nachweis Epidermaler Wachstumsfaktor (EGF)-ähnlicher Faktoren (EGF-F) in verschiedenen Hauttumoren.