Juan XUE, Qing WEI, Shan-shan LIANG, et al. Effects of Valeriana amurensis Roots and Rhizomes Extract and Its Active Constituents on Activities of Drug Metabolism Enzymes in Liver[J]. Chinese journal of experimental traditional medical formulae, 2020, 26(9): 106-112.
DOI:
Juan XUE, Qing WEI, Shan-shan LIANG, et al. Effects of Valeriana amurensis Roots and Rhizomes Extract and Its Active Constituents on Activities of Drug Metabolism Enzymes in Liver[J]. Chinese journal of experimental traditional medical formulae, 2020, 26(9): 106-112. DOI: 10.13422/j.cnki.syfjx.20200646.
Effects of Valeriana amurensis Roots and Rhizomes Extract and Its Active Constituents on Activities of Drug Metabolism Enzymes in Liver
roots and rhizomes extract and its active constituents on the activities of six major cytochrome P450 (CYP450) enzymes in human liver microsomes.
Method:
2
Coumarin
bupropion
tolbutamide
omeprazole
dextromethorphan and testosterone were used as probe substrates for CYP2A6
CYP2B6
CYP2C9
CYP2C19
CYP2D6 and CYP3A4
respectively. Taking their specific metabolites of hydroxylation or demethylation (7-hydroxycoumarin
hydroxybupropion
4-hydroxytolbutamide
5-hydroxyomeprazole
dextromethorphan
6
β
-hydroxytestosterone) as indicators of enzyme activities. The analytical indexes were used to establish an
in vitro
model of human liver microsomes of Cocktail probe substrates. This method was applied to evaluate the effects of
V
.
amurensis
roots and rhizomes extract and its active constituents on human liver microsomal enzymes.
Result:
2
The
V
.
amurensis
roots and rhizomes extract had different inhibitory effects on CYP2B6
CYP2C9
CYP2D6 and CYP3A4
their half-inhibitory concentration (IC
50
) values were 87.49
1.73
68.29
2.80 mg·L
-1
respectively. Among the 9 lignans
(-)-massoniresinol-3
α
-
O
-
β
-
D
-glucopyranoside had a moderate inhibitory effect on CYP2A6 with an IC
50
value of 8.51 μmol·L
-1
8
8′-dihydroxypinoresinol-4
4′-di-
O
-
β
-
D
-glucopyranoside had a moderate inhibitory effect on CYP2D6 with an IC
50
value of 8.73 μmol·L
-1
(+)-medioresinol-4
4′-
O
-di-
β
-
D
-glucopyranoside had a moderate inhibitory effect on CYP2B6 and CYP2C9 with IC
50
values of 5.41 μmol·L
-1
and 8.20 μmol·L
-1
.
Conclusion:
2
The
V
.
amurensis
roots and rhizomes extract and its active constituents have inhibitory effects on liver CYP450 enzymes. Therefore
in the clinical study of new drugs
it is necessary to fully evaluate the risk of drug interactions caused by combination therapy.
关键词
Keywords
references
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