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Updated: Jul 26, 2026

Free Radicals in Chemical Biology: from Chemical Behavior to Biomarker Development
Published on: April 15, 2013
Aromatic dental monomers affect the activity of cholesterol esterase
R E Smith1, S Burmaster, A G Glaros
1School of Pharmacy, University of Missouri-Kansas City, Kansas City, MO 64108, USA.
Abstract:
The dental restorative monomer, BISGMA (2,2-bis[4-(2-hydroxy-3-methacryloxypropoxy)phenyl]propane), and bisphenol A diglycidyl ether (BADGE) increase the velocity of the reaction catalyzed by pancreatic cholesterol esterase (CEase, bovine). The metabolite of these monomers, bisphenol A bis(2,3-dihydroxypropyl) ether, and a common plasticizer, di-2-ethylhexyl phthalate (DEHP), also increase the velocity of CEase-catalyzed ester hydrolysis. BISGMA at concentrations of 1.5-8.0 microM increases the velocity to 126-169% of its value in the absence of BISGMA. Increasing BISGMA above 8 microM caused no further increase in velocity. BADGE at 7-25 microM increases the velocity to 112-205% of its value without BADGE. The metabolite of BISGMA and BADGE at concentrations of 2.0-7.1 microM increases the velocity to 103-113% of its value without metabolite. DEHP at concentrations of 0.52-4.3 microM increases the velocity to 108-187% of its value without DEHP. On the other hand, bisphenol A dimethacrylate is a competitive inhibitor of CEase, with a K(i) of 3.1 microM.
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