CHEN Linlin,XIE Jingen,FAN Xuecheng,et al.Pharmacokinetic study of the complication of Ephedra sinica and Prunus armeniaca in bronchial asthma model rats[J].ZHONGGUO YAOFANG,2024,35(13):1588-1593.
CHEN Linlin,XIE Jingen,FAN Xuecheng,et al.Pharmacokinetic study of the complication of Ephedra sinica and Prunus armeniaca in bronchial asthma model rats[J].ZHONGGUO YAOFANG,2024,35(13):1588-1593. DOI: 10.6039/j.issn.1001-0408.2024.13.08.
Pharmacokinetic study of the complication of Ephedra sinica and Prunus armeniaca in bronchial asthma model rats
To study the pharmacokinetic changes in the plasma and cerebrospinal fluid of bronchial asthma model rats after the complication of
Ephedra sinica
and
Prunus armeniaca
.
METHODS
2
SD male rats were randomly divided into blank group, model group,
E. sinica
group (12 g/kg, calculated by raw drug, similarly hereinafter),
P. armeniaca
group (6 g/kg) and
E. sinica
-
P. armeniaca
drug-pair group (12 g/kg of
E. sinica
+6 g/kg of
P. armeniaca
), with 6 rats in each group. Except for the blank group, the br
onchial asthma model was induced by spraying rats in each group with an equal volume mixture of 2% acetylcholine chloride and 0.4% histamine phosphate, once a day, for 7 d. One hour before modeling every time, rats in each group were gavaged with the corresponding drug/normal saline, once a day, for 7 d. After the final administration and provocation of asthma, blood and cerebrospinal fluid collection were performed at different time points. The plasma and cerebrospinal fluid samples were pre-treated (with geranylgeranyl as the internal standard), and the mass concentrations of ephedrine/pseudoephedrine, methyl ephedrine and amygdalin in both samples were determined by liquid chromatography-tandem mass spectrometry. DAS 2.0 pharmacokinetic software was used to determine the main pharmacokinetic parameters through the non-atrial chamber model and to compare the changes of the pharmacokinetic parameters before and after the combination of the two drugs.
RESULTS
2
Compared with
E. sinica
group,
c
max
and AUC
0-21.33 h
(or AUC
0-10.67 h
) of ephedrine/pseudoephedrine and methyl ephedrine in the plasma and cerebrospinal fluid of rats were significantly reduced in
E. sinica
-
P. armeniaca
drug-pair group, while CL
Z
/
F
and
V
Z
/
F
were significantly increased (
P
<0.05 or
P
<0.01);
t
max
of methyl ephedrine in the cerebrospinal fluid was significantly shortened (
P
<0.05).Compared with
P. armeniaca
group, the
t
1/2
of amygdalin in the plasma of rats in
E. sinica
-
P. armeniaca
drug-pair group was significantly shortened, and CL
Z
/
F
was significantly increased (
P
<0.01); the
t
max
of bitter amygdalin in the cerebrosp
inal fluid was significantly shortened, and the AUC
0-10.67 h
, CL
Z
/
F
, and
V
Z
/
F
were significantly increased (
P
<0.01).
CONCLUSIONS
2
The combination of
E. sinica
and
P. armeniaca
accelerates the absorption and elimination of ephedra alkaloids, thus reducing the accumulation of ephedra alkaloids in the bronchial asthma model rats.
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