title: [Diagnostic value of determining endogenous proteinase inhibitors in cancer patients].
abstract: Patients with stage III and IV cancers of different sites revealed a 47-76% increase in serum total antitrypsinic activity. A mean 40% increase was observed in cases of inflammatory pathology. Both study groups demonstrated raised alpha 1-antitrypsin levels, while that of alpha 2-macroglobulin did not show any significant changes. The level of alpha 1-antitrypsin accounted for 89 and 83% of total antitrypsinic activity in cases of inflammation and controls, respectively, while in cancer patients this index was significantly lower (70%). The diagnostic value of total antitrypsinic activity appeared to be higher than that of alpha 1-antitrypsin level determination. It is inferred that, apart from alpha 1-antitrypsin, malignant growth is associated with raised levels of more specific endogenous proteinase inhibitors, except alpha 2-macroglobulin.
mesh_terms: D004796:Clinical Enzyme Tests; D006801:Humans; D009369:Neoplasms / Q000175:diagnosis*; D011480:Protease Inhibitors / Q000097:blood*; D000515:alpha 1-Antitrypsin / Q000032:analysis; D000511:alpha-Macroglobulins / Q000032:analysis
chemical_list: D011480:Protease Inhibitors; D000515:alpha 1-Antitrypsin; D000511:alpha-Macroglobulins
vernacular_title: Diagnosticheskaia tsennost' opredeleniia éndogennykh ingibitorov proteinaz u onkologicheskikh bol'nykh.