Determination of the inhibitory activity of angiotensin-converting enzyme inhibitor captopril by high performance capillary electrophoresis / 药学学报
Acta Pharmaceutica Sinica
;
(12): 843-845, 2003.
Article
in Chinese
| WPRIM
| ID: wpr-266571
ABSTRACT
<p><b>AIM</b>To establish a method for determinate of the inhibitory activity of angiotensin-converting enzyme inhibitor captopril by high performance capillary electrophoresis.</p><p><b>METHODS</b>The characteristic absorptive wavelength of hippuric acid determined by ultraviolet spectrophotometer is 228 nm. The method employed a melted capillary column, 50 mmol.L-1 phosphoric acid (pH 8.3) buffer solution, inject pressure 4.8 kPa, inject time 3 s, separation voltage 20 kV and detection wavelength 228 nm.</p><p><b>RESULTS</b>The reactant and resultant was separated completed within 7 min. IC50 of captopril was 0.019 mumol.L-1. Captopril is a competitive inhibitor, which was proved by enzyme reaction dynamics.</p><p><b>CONCLUSION</b>The method was shown to be accurate, simple and rapid and can be used for determination of the inhibitory activity of captopril.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pharmacology
/
Angiotensin-Converting Enzyme Inhibitors
/
Captopril
/
Peptidyl-Dipeptidase A
/
Electrophoresis, Capillary
/
Hippurates
/
Metabolism
/
Methods
Language:
Chinese
Journal:
Acta Pharmaceutica Sinica
Year:
2003
Type:
Article
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