Arylsulphatase activity in human gingival crevicular fluid

Area of Science:

• Biochemistry
• Oral Biology
• Enzymology

Background:

• Gingival crevicular fluid contains enzymes like arylsulphatase.
• Assessing enzyme activity in gingival fluid can aid in diagnosing oral inflammatory conditions.

Purpose of the Study:

• To quantify and compare arylsulphatase activity in gingival fluid from non-inflamed, gingivitis, and periodontitis subjects.
• To determine the most meaningful metric for reporting arylsulphatase activity in the context of periodontal disease.

Main Methods:

• Gingival fluid was collected from subjects with non-inflamed gums, gingivitis, and periodontitis (n=5 each).
• Arylsulphatase activity was assayed and reported as both volume activity (nm/ml per h) and total unit activity (nm).

Main Results:

• Mean volume activity of arylsulphatase was significantly higher in gingivitis (2431 +/- 1118 nm/ml per h) and periodontitis (2860 +/- 1839 nm/ml per h) compared to non-inflamed subjects (768 +/- 165 nm/ml per h).
• Mean total unit activity showed a more pronounced increase: non-inflamed (0.326 +/- 0.076 nm), gingivitis (1.394 +/- 0.411 nm), and periodontitis (3.571 +/- 1.700 nm).

Conclusions:

• Arylsulphatase activity in gingival fluid is elevated in inflammatory periodontal conditions.
• Total unit activity provides a more clinically relevant measure of arylsulphatase activity in periodontitis than volume activity.