title: Analysis of human gingival tissue and gingival crevicular fluid beta-glucuronidase activity in specific periodontal diseases.
abstract: BACKGROUND
  Beta-glucuronidase (betaG) is one of the enzymes involved in the destruction of non-collagenous components of the extracellular matrix. It is also considered an indicator or predictor of periodontal disease activity. The present study was conducted to determine the presence and the levels of betaG activity in gingival tissue and gingival crevicular fluid (GCF) in periodontal disease and health status. The validity of 2 expressions of data, total betaG activity versus betaG concentration, and the correlations between clinical periodontal status and betaG profile was also evaluated.
  
  
  METHODS
  betaG activities in gingival tissues and GCF samples from 57 individuals, divided into 3 equal groups of adult periodontitis (AP), early-onset periodontitis (EOP), and periodontally healthy subjects were spectrophotometrically examined.
  
  
  RESULTS
  Both patient groups had higher betaG levels in both gingiva and GCF than controls. Significant differences were observed among all groups when total GCF betaG activities were examined (P <0.05). However, the difference between AP and controls was not significant when concentration values were compared (P >0.05). The highest GCF betaG activity, with both expressions, was detected in EOP group. No absolute correlations between clinical parameters and betaG activity were observed, except for random correlations in the patient groups with mean total betaG activities. Also GCF/gingiva betaG levels and the 2 expressions did not show absolute correlations.
  
  
  CONCLUSIONS
  The findings of the present study confirm the relationship between betaG activity and periodontal diseases. The differences in data concerning GCF total betaG activity and betaG concentration may suggest that they are not matching measures. Data presentation seems to be an important factor in GCF/enzyme profile studies.
authors.affiliation: Department of Periodontology, Faculty of Dentistry, University of Hacettepe, Ankara, Turkey.
authors.forename: M
authors.initials: M
authors.lastname: Layik
authors.forename: N
authors.initials: N
authors.lastname: Yamalik
authors.forename: F
authors.initials: F
authors.lastname: Caglayan
authors.forename: K
authors.initials: K
authors.lastname: Kilinç
authors.forename: I
authors.initials: I
authors.lastname: Etikan
authors.forename: K
authors.initials: K
authors.lastname: Eratalay
mesh_terms: D000293:Adolescent; D000328:Adult; D010520:Aggressive Periodontitis / Q000145:classification / Q000201:enzymology; D016301:Alveolar Bone Loss / Q000145:classification; D000704:Analysis of Variance; D003774:Dental Plaque Index; D005109:Extracellular Matrix / Q000201:enzymology; D005260:Female; D005881:Gingiva / Q000201:enzymology*; D005883:Gingival Crevicular Fluid / Q000201:enzymology*; D005884:Gingival Hemorrhage / Q000145:classification; D005966:Glucuronidase / Q000032:analysis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010510:Periodontal Diseases / Q000145:classification / Q000201:enzymology*; D010512:Periodontal Index; D010514:Periodontal Pocket / Q000145:classification; D010518:Periodontitis / Q000145:classification / Q000201:enzymology; D010519:Periodontium / Q000201:enzymology; D015203:Reproducibility of Results; D013053:Spectrophotometry
chemical_list: D005966:Glucuronidase