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Journal of Dental Research
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Determination of Pseudocholinesterase Activity in the Gingival Crevicular Fluid, Saliva, and Serum from Patients with Juvenile Periodontitis and Rapidly Progressive Periodontitis

N. Yamalik

Department of Periodontology, Faculty of Dentistry, University of Hacettepe, Ankara, Turkey

N. Özer

Department of Biochemistry, Faculty of Medicine, University of Hacettepe, Ankara, Turkey

F. Çaglayan

Department of Periodontology, Faculty of Dentistry, University of Hacettepe, Ankara, Turkey

G. Çaglayan

Department of Periodontology, Faculty of Dentistry, University of Hacettepe, Ankara, Turkey

By use of a spectrophotometric method, pseudocholinesterase (PCE) activities were determined in gingival crevicular fluid (GCF), saliva, and serum from patients with juvenile periodontitis (JP) and rapidly progressive periodontitis (RPP) and from controls. The PCE activity in the GCF samples was 181 ± 48 U/L in the JP group, 588 ± 135 U/L in the RPP group, and 88.5 ± 29.1 U/L in the control group. Saliva PCE activity levels were 9.1 ± 1.7 U/L in the JP group, 21.8 ± 4.5 UlL in the RPP group, and 12.7 ± 0.8 UlL in the control group. GCF contained a higher PCE activity than saliva but a lower one than that of serum. The RPP group had a significantly higher PCE activity in both the GCF and saliva samples. No significant differences could be found regarding serum enzyme levels. Also, no significant correlations were present between biochemical values and the severity of periodontal disease. GCF may be an important source for the PCE content of saliva. It is suggested that the increased PCE activity seen in RPP patients might be caused by either the direct production of esterases by bacteria or the induction of esterases during periodontal destruction.

Journal of Dental Research, Vol. 69, No. 1, 87-89 (1990)
DOI: 10.1177/00220345900690011501
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