Glucuronidase Activity
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2021 ◽  
Vol 27 (5) ◽  
pp. 797-806
Author(s):  
Makoto Kuji ◽  
Nanako Itoh ◽  
Yui Ohba ◽  
Kiyoshi Yamada ◽  
Kei Hashimoto

2020 ◽  
Vol 8 (9) ◽  
pp. 1222-1230
Author(s):  
Gawali S ◽  
◽  
Padhye A ◽  
Chavan P ◽  
◽  
...  

Diabetes mellitus is a risk factor for development of periodontal disease with progressive periodontal destruction seen in diabetic patients. Advances in oral and periodontal disease diagnostic research are moving towards methods whereby periodontal risk can be identified and quantified by objective measures such as biomarkers. The aim of this study was to identify the presence of beta glucuronidase activity as an enzymatic biomarker of periodontal tissue destruction in patients of Diabetes mellitus associated with Periodontitis. β Glucuronidase activitywas estimated in saliva, GCF (Gingival Crevicular Fluid) and serum in healthy subjects and patients with Diabetes mellitus, Periodontitis and Diabetes associated periodontitis. Enzyme activity was compared with clinical parameters like Probing pocket depth, Plaque Index and Gingival Index. It was maximally raised in diabetic cases with periodontitis. Enzyme activity was found to be highest in crevicular fluid compared to saliva and serum. However, serum Glucuronidase correlated significantly with clinical indices. β-glucuronidase may be employed on routine basis as a chair side test for screening and diagnosis of patients with periodontitis in diabetics.


2020 ◽  
Vol 11 (1) ◽  
pp. 7921-7931

In neonatal jaundice, β-glucuronidase converts conjugated bilirubin into the unconjugated form and increases its level in the blood. Many natural compounds have been identified as β-glucuronidase inhibitors. The aim of this study was to evaluate the effect of hydro-methanolic extracts of 100 plants on β-glucuronidase. The β-glucuronidase activity was measured by a spectrophotometric method using Phenolphthalein glucuronide and 4-nitrophenyl β-D-glucuronide. Kinetic study of the enzyme was performed in the presence and absence of the plant extract. It was revealed that from hydro-methanolic (70%) extracts, Rosa damascena and Ipomoea tricolor showed more than 85% inhibitory effect on β-glucuronidase. Rosa damascena showed competitive inhibition, and Ipomoea tricolor showed non-competitive inhibition. The Km and Vmax values for β-glucuronidase were 23.32 mM and 0.814 mM min-1, respectively. When using 4-nitrophenyl β-D-glucuronide, Stevia and Cerasus avium showed more than 65% inhibitory effect on β-glucuronidase. Both Stevia and Cerasus avium showed non-competitive inhibition. The Km and Vmax values for β-glucuronidase were 16.98 mM and 0.936 mM min-1, respectively. None of the plant extracts showed an activation effect on the enzyme. The data suggest that these plants might be good candidates for the treatment of neonatal jaundice and its related diseases.


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