title: [Parameters of plasma blood proteolysis and phenotypes of alpha1-proteinase inhibitor in children with duodenal ulcer].
abstract: The aim of this study was to determine correlation between proteolysis parameters and phenotypes of alpha1-proteinase inhibitor in blood plasma in children with duodenal ulcer. Activation of pepsin- and trypsin like proteinases was accompanied by the decrease in activity of alpha2-macroglobulin and the increase in activity of acid stable inhibitors. The phenotypes M1M3, M1M1, M2M2 of alpha1-proteinase inhibitor were determined. Activation of proteolysis was more pronounced in individuals with subtype M2M2. Activity of alpha1-proteinase inhibitor decreased by 2-fold in M2M2, insignifically differed from the control group in M1M1, and increased by 1,9-fold in M1M3 subtype. Low activity of alpha1-proteinase inhibitor was accompanied by high activity of acid stable inhibitors; this may be regarded as the protective reaction of the body. Determination of alpha1-proteinase inhibitor phenotypes may be a basis for employment of polyvalent proteinase inhibitors for therapy of ulcer.
authors.forename: O E
authors.initials: OE
authors.lastname: Akbasheva
mesh_terms: D000293:Adolescent; D002648:Child; D004381:Duodenal Ulcer / Q000097:blood* / Q000201:enzymology*; D005260:Female; D006801:Humans; D008297:Male; D010447:Peptide Hydrolases / Q000097:blood*; D011480:Protease Inhibitors / Q000097:blood*; D000515:alpha 1-Antitrypsin / Q000097:blood / Q000737:chemistry*; D000511:alpha-Macroglobulins / Q000032:analysis
chemical_list: D011480:Protease Inhibitors; D000515:alpha 1-Antitrypsin; D000511:alpha-Macroglobulins; D010447:Peptide Hydrolases