LI Han,SONG Ling,GAO Yunhang,et al.Detoxification Mechanism of Combined Chebulae Fructus, Glycyrrhizae Radix et Rhizoma and Prepared Aconiti Kusnezoffii Radix Cocta in Regulating Cardiac Metabolic Enzyme CYP2J3[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(17):88-95.
LI Han,SONG Ling,GAO Yunhang,et al.Detoxification Mechanism of Combined Chebulae Fructus, Glycyrrhizae Radix et Rhizoma and Prepared Aconiti Kusnezoffii Radix Cocta in Regulating Cardiac Metabolic Enzyme CYP2J3[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(17):88-95. DOI: 10.13422/j.cnki.syfjx.202202326.
Detoxification Mechanism of Combined Chebulae Fructus, Glycyrrhizae Radix et Rhizoma and Prepared Aconiti Kusnezoffii Radix Cocta in Regulating Cardiac Metabolic Enzyme CYP2J3
To investigate the detoxification mechanism of Chebulae Fructus, Glycyrrhizae Radix et Rhizoma and Prepared Aconiti Kusnezoffii Radix Cocta, and their effective components ellagic acid, liquiritin and aconitine based on cardiac cytochrome P450 (CYP450) system.
Method
2
In
in vivo
experiments, rats were randomly divided into control group, prepared Aconiti Kusnezoffii Radix Cocta group (0.25 g·kg
-1
), Chebulae Fructus group (0.252 g·kg
-1
), Glycyrrhizae Radix et Rhizoma group (0.25 g·kg
-1
) and combination group (0.25 g·kg
-1
Chebulae Fructus+0.25 g·kg
-1
Glycyrrhizae Radix et Rhizoma+0.25 g·kg
-1
prepared Aconiti Kusnezoffii Radix Cocta, with prepared Aconiti Kusnezoffii Radix Cocta as standard). After 8 days of administration, creatine kinase (CK) and lactate dehydrogenase (LDH) in rats were detected to observe the pathological changes of heart tissue. Real-time PCR and Western blot were performed to detect the mRNA and protein expressions of CYP2J3, respectively. In
in vitro
experiments, control group, aconitine group, ellagic acid group, liquiritin group and combination group (aconitine+ellagic acid+liquiritin) were set, and their effects on cell number, DNA content, reactive oxygen species (ROS) and mitochondrial membrane potential (MMP) were detected by high content analysis. The changes in the mRNA and protein expressions of CYP2J3 were also observed.
Result
2
In vivo
experiments, compared with the control group, the prepared Aconiti Kusnezoffii Radix Cocta group had increased CK and LDH in serum (
P
<
0.05,
P
<
0.01), while the combination group had decreased activities of CK and LDH. Additionally, pathological staining results showed that Chebulae Fructus and Glycyrrhizae Radix et Rhizoma reduced the cardiac toxicity caused by prepared Aconiti Kusnezoffii Radix Cocta. Real-time PCR found that compared with the control group, prepared Aconiti Kusnezoffii Radix Cocta down-regulated the mRNA level of CYP2J3 (
P
<
0.05), while up-regulated that expression when used in combination with Chebulae Fructus and Glycyrrhizae Radix et Rhizoma (
P
<
0.01). The protein and mRNA translation levels were basically consistent.
In vitro
experiments, high content analysis revealed that there was a decrease in the cell number, DNA content and MMP fluorescence value of the aconitine group (
P
<
0.01) and the combination group (
P
<
0.05,
P
<
0.01), and the fluorescence value of the combination group was higher than that of the aconitine group. Moreover, aconitine down-regulated the mRNA level of CYP2J3 (
P
<
0.05), but the down-regulating ability of aconitine was reversed in the combination group (
P
<
0.05).
Conclusion
2
The detoxification mechanism of combined Chebulae Fructus, Glycyrrhizae Radix et Rhizoma and prepared Aconiti Kusnezoffii Radix Cocta is mainly that the combination of ellagic acid, liquiritin and aconitine can up-regulate the expression of CYP2J3, and promote the metabolism of arachidonic acid (AA) to produce epoxyeicosatrienoic acids (EETs), thus reducing the cardiac toxicity, and this effect may start from the transcriptional link.
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