title: [The value of the free hydroxyproline and the N-acetyl-beta- glucosaminidase for the observation of the course of malignant tumors].
abstract: In 172 patients with various malign tumours the free hydroxyprolin (HP) and N-acetyl-beta-glucosaminidase (beta-NAG) in the serum were determined. The established values were analysed according to the kind of tumour, spread of tumour, behaviour of growth and histological classification and statistically evaluated. In mamma carcinoma progressively metastasing into bones HP is significantly increased in its mean value. 71.4 per cent of the patients have pathological values. The parameter for bone-marrow diagnostics failed in 28.6 per cent. Increases may only occur until 9 weeks before traditional diagnostics of metastases. beta-NAG values lie within the normal range for clinically not metastasing mamma carcinoma. The enzyme level will increase significantly after each tumour progression into an organ. The diagnostic sensitivity for the general diagnostics of metastases amounts to 97.7 per cent. Increases without any evidence of metastases are either due to other diseases with connective tissue changes or to occult micrometastases. An exact control is required for these patients. Likewise, HP and beta-NAG have a prognostic importance for malign testicle tumours from nonseminomes character and malign lymphomas, because with tumour progression they will turn into pathological ones. Cytostatics have no direct impact on the serum level of HP and beta-NAG.
mesh_terms: D000118:Acetylglucosaminidase / Q000097:blood*; D001859:Bone Neoplasms / Q000097:blood / Q000556:secondary; D001943:Breast Neoplasms / Q000097:blood / Q000503:physiopathology; D005260:Female; D006596:Hexosaminidases / Q000097:blood*; D006689:Hodgkin Disease / Q000097:blood; D006801:Humans; D006909:Hydroxyproline / Q000097:blood*; D008228:Lymphoma, Non-Hodgkin / Q000097:blood; D008297:Male; D009362:Neoplasm Metastasis; D009369:Neoplasms / Q000175:diagnosis*; D011379:Prognosis; D011471:Prostatic Neoplasms / Q000097:blood / Q000473:pathology
chemical_list: D006596:Hexosaminidases; D000118:Acetylglucosaminidase; D006909:Hydroxyproline
vernacular_title: Wertigkeit des freien Hydroxyprolins und der N-Acetyl-beta-Glukosaminidase für die Verlaufsbeobachtung von malignen Tumoren.