CHEN Hongjiao,LIU Wei,LI Xueyan,et al.Analysis on Components Absorbed into Blood of Citri Reticulatae Pericarpiumin RatsBased on Sequential Metabolism and UPLC-HRMS[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(09):179-187.
CHEN Hongjiao,LIU Wei,LI Xueyan,et al.Analysis on Components Absorbed into Blood of Citri Reticulatae Pericarpiumin RatsBased on Sequential Metabolism and UPLC-HRMS[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(09):179-187. DOI: 10.13422/j.cnki.syfjx.20221047.
Analysis on Components Absorbed into Blood of Citri Reticulatae Pericarpiumin RatsBased on Sequential Metabolism and UPLC-HRMS增强出版
To study the metabolism of chemical components from Citri Reticulatae Pericarpium(CRP)in different parts of rats by sequential metabolism and ultra performance liquid chromatography-high resolution mass spectrometry(UPLC-HRMS).
Method
2
SD male rats were employed as experimental subjects, and blood samples of intestinal metabolism and hepatic metabolism were prepared after administration of CRP ethanol extract by
in situ
intestinal perfusion, and comprehensive metabolic samples were collected after intragastric administration. UPLC-HRMS was used to analyze the samples with acetonitrile(A)-0.1% formic acid aqueous solution(B)as the mobile phase for gradient elution(0-10 min, 10%-30%A; 10-30 min, 30%-95%A; 30-31 min, 95%-10%A; 31-35 min, 10%A)at a flow rate of 0.35 mL·min
-1
, using a heated electrospray ionization with positive and negative ion mode scanning in the range of
m
/
z
100-1 500. Under these conditions, the differences in the profiles of CRP ethanol extract, blank plasma and drug-containing plasma under different treatment groups were compared, and the chemical components of each sample were analyzed and identified based on the retention time, accurate relative molecular mass, primary and secondary ion fragments, and the information of reference substances.
Result
2
A total of 44 chemical components were identified in the CRP
ethanol extract, including flavone-
O
-glycosides, flavone-C-glycosides and polymethoxyflavonoids, etc. The results of sequential metabolism showed that 22 chemical components in CRP were detected in the intestinal metabolic sample, 18 chemical components were detected in the hepatic metabolic sample, and 9 identical chemical components(narirutin, hesperidin, meranzin, 5,7,8,3ʹ,4ʹ,5ʹ-hexamethoxy-flavone, isosinensetin, sinensetin, 3,5,6,7,8,3ʹ,4ʹ-heptamethoxyflavone, nobiletin and tangeretin)could be detected in all three metabolic samples, with a total of 22 compounds entering the blood in prototype form.
Conclusion
2
The identified 21 components with well-defined structures entering the blood as prototypes may be potential active components of CRP, and differences in the components at different metabolic parts can provide an experimental basis for elucidating the
in vivo
biotransformation process of the metabolic components of CRP.
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