title: Quantification of alpha-fetoprotein and beta-HCG in testis tumor patients.
abstract: Patients with testis tumor were investigated for serum and tissue levels of alpha-fetoprotein and beta-human chorionic gonadotropin (beta-HCG). The tissue immune peroxidase-antiperoxidase staining for the tumor marker was quantitated by computer-assisted immunohistophotometry and immuno-gamma ray histospectrometry. The results supported the general view that mostly polynuclear giant cells produce beta-HCG in 66% of nonseminoma cancer. This finding qualifies beta-HCG as relatively unspecific in the absence of chorioepithelial cells in the tumor. Discrepancies of tissue and serum beta-HCG values may be caused by deglycolysation of beta-HCG while penetrating the perivascular tissues. Alpha-fetoprotein (AFP) appears helpfully to discriminate the true seminoma cancer, which is constantly negative. Histologically pure seminoma which reacts for AFP therefore suggests sclerotic teratoma compartments. A constant finding is the significantly reduced synthesis rate of tumor markers in metastasis compared to primary tumor.
mesh_terms: D014408:Biomarkers, Tumor / Q000032:analysis*; D006063:Chorionic Gonadotropin / Q000032:analysis* / Q000097:blood; D018997:Chorionic Gonadotropin, beta Subunit, Human; D004407:Dysgerminoma / Q000032:analysis* / Q000097:blood / Q000473:pathology; D006801:Humans; D007124:Immunoenzyme Techniques; D008297:Male; D010446:Peptide Fragments / Q000032:analysis* / Q000097:blood; D013724:Teratoma / Q000032:analysis* / Q000097:blood / Q000473:pathology; D013736:Testicular Neoplasms / Q000032:analysis* / Q000097:blood / Q000473:pathology; D000509:alpha-Fetoproteins / Q000032:analysis*
chemical_list: D014408:Biomarkers, Tumor; D006063:Chorionic Gonadotropin; D018997:Chorionic Gonadotropin, beta Subunit, Human; D010446:Peptide Fragments; D000509:alpha-Fetoproteins