Enzyme Kinetics of TM-2 in Rat, Beagle Dog and Human Liver Microsomes / 中国药学杂志
Chinese Pharmaceutical Journal
;
(24): 620-626, 2018.
Artigo
em Chinês
| WPRIM
| ID: wpr-858365
ABSTRACT
OBJECTIVE:
To study the enzymatic kinetics of TM-2 in rat, Beagle dog and human liver microsomes by LC-MS/MS.METHODS:
TM-2 was incubated with liver microsomal incubation system. LC-MS/MS method was established for quantitative analysis of TM-2 with cabazitaxel as internal standard. The enzyme kinetics parameters Vmax and Km was calculated by the GraphPad Prism 5.0 software.RESULTS:
A rapid and sensitive LC-MS/MS method was developed to study the enzyme kinetics of TM-2 in rat, Beagle dog and human liver microsome. The corresponding enzymatic kinetic parameters in rat, Beagle dog and human were as follows Vmax values were 16.3, 354.6 and 154.8 nmol•min-1•mg(protein)-1, respectively; Km values were 25.7, 313.8 and 89.4 μmol• L-1, respectively; CLint values were 0.63, 1.13 and 1.73 mL•min-1•mg(protein)-1, respectively.CONCLUSION:
The result indicates that there are species differences in the activity of metabolic enzyme and the affinity of TM-2 to the metabolic enzyme. Enzyme kinetic parameters obtained of TM-2 provide important parameters for the further study.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Idioma:
Chinês
Revista:
Chinese Pharmaceutical Journal
Ano de publicação:
2018
Tipo de documento:
Artigo
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