Characterization of procaine metabolism as probe for the butyrylcholinesterase enzyme investigation by simultaneous determination of procaine and its metabolite using capillary electrophoresis with electrochemiluminescence detection.

Journal Article

Capillary electrophoresis with electrochemiluminescene detection was used to characterize procaine hydrolysis as a probe for butyrylcholinesterase by in vitro procaine metabolism in plasma with butyrylcholinesterase acting as bioscavenger. Procaine and its metabolite N,N-diethylethanolamine were separated at 16 kV and then detected at 1.25 V in the presence of 5.0 mM Ru(bpy)(3)2+, with the detection limits of 2.4x10(-7) and 2.0x10(-8) mol/L (S/N=3), respectively. The Michaelis constant Km value was 1.73x10(-4) mol/L and the maximum velocity Vmax was 1.62x10(-6) mol/L/min. Acetylcholine bromide and choline chloride presented inhibition effects on the enzymatic cleavage of procaine, with the 50% inhibition concentration (IC50) of 6.24x10(-3) and 2.94x10(-4) mol/L.

Full Text

Duke Authors

Cited Authors

  • Yuan, J; Yin, J; Wang, E

Published Date

  • June 22, 2007

Published In

Volume / Issue

  • 1154 / 1-2

Start / End Page

  • 368 - 372

PubMed ID

  • 17507024

Pubmed Central ID

  • 17507024

International Standard Serial Number (ISSN)

  • 0021-9673

Digital Object Identifier (DOI)

  • 10.1016/j.chroma.2007.02.024

Language

  • eng

Conference Location

  • Netherlands