title: [The activities of proteolytic enzymes in dental plaque of patients in different age-sex groups].
abstract: This study was intended to explore the relationship between the proteolytic enzymes in dental plaque and the patient's age and sex. Fluorometry and spectrometry were used to separately determine the activities of leucine amino peptidase, dipeptidyl peptidase IV and trypsin-like proteinase in children(10 boys and 10 girls), adults(n = 20) and elderly people(n = 10). The results showed that sex almost had no influence on the activities of the three enzymes in dental plaque in the children(P > 0.05), and with the increase of age, the activities of the three enzymes apparently increased (P < 0.01). These findings imply that the proteolytic enzymes may only play important roles in root lesions.
authors.affiliation: Department of Cariology, School of Stomatology, WCUMS, Chengdu 610041.
authors.forename: T
authors.initials: T
authors.lastname: Hu
authors.forename: X
authors.initials: X
authors.lastname: Zhou
authors.forename: J
authors.initials: J
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003731:Dental Caries / Q000201:enzymology*; D003773:Dental Plaque / Q000201:enzymology*; D018819:Dipeptidyl Peptidase 4 / Q000378:metabolism; D005260:Female; D006801:Humans; D007931:Leucyl Aminopeptidase / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D010447:Peptide Hydrolases / Q000378:metabolism*; D012697:Serine Endopeptidases / Q000378:metabolism; D012737:Sex Factors
chemical_list: C114880:trypsin-like serine protease; D010447:Peptide Hydrolases; D007931:Leucyl Aminopeptidase; D018819:Dipeptidyl Peptidase 4; D012697:Serine Endopeptidases