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  • Akademiai Kiado Zrt.  (2)
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  • Akademiai Kiado Zrt.  (2)
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  • 1
    Online Resource
    Online Resource
    Akademiai Kiado Zrt. ; 2021
    In:  Acta Chromatographica Vol. 33, No. 3 ( 2021-04-28), p. 261-269
    In: Acta Chromatographica, Akademiai Kiado Zrt., Vol. 33, No. 3 ( 2021-04-28), p. 261-269
    Abstract: Natural hemostatic compounds from Toddalia asiatica (Linn) Lam ( T. asiatica ) root bark had been investigated by a novel strategy, chemical fingerprint–pharmacokinetic–pharmacodynamic (CF–PK–PD) for the first time in this study. The extract sample of T. asiatica root bark was subdivided into petroleum ether (PE), ethyl acetate (EA) and n-butanol (n-B) sample by reagent extraction, EA sample showed significant hemostatic activity using prothrombin time (PT), activated partial thromboplastin time (APTT) and fibrinogen (FIB) as evaluation indexes from rat plasma of PK experiment in hemorrhagic rat model. CF analysis was adopted to assist us to discover six natural compounds from T. asiatica root bark in actual rat plasma after sample treatment by Ultra Performance Liquid Chromatography-Electrospray Ionization (UPLC-ESI) MS, there were only lomatin and 5-methoxy-8-hydroxy psoralen showing significant hemostatic effect ( P 〈 0.05) mainly through endogenous coagulation pathway and fibrinolytic system. In PK–PD study, six compounds in EA sample exhibited relatively rapid absorption and slow elimination characteristics. The mean T max and t 1/2β of isopimpinellin and pimpinellin were 1.74 and 0.59 h, 5.31 and 6.89 h in rats. On the basis of Sigmoid– E max model, PK–PD related curves of FIB in hemorrhagic rat model after treatment of T. asiatica root bark were obtained. Predicted E max , EC 50 and k e0 of FIB under isopimpinellin were 4.87 mg/mL, 1.39 μg/mL and 0.81 1/h; predicted E max , EC 50 and k e0 of FIB under pimpinellin were 4.29 mg/mL, 2.47 μg/mL and 0.77 1/h. In conclusion, hemostatic compounds from T. asiatica root bark had been materialized, there were lomatin, isopimpinellin, pimpinellin and 5-methoxy-8-hydroxy psoralen at least as its main active substances through coagulation pathways and fibrinolytic system. CF–PK–PD method as a promising method was worthy of follow-up opening, application in pharmaceutical research.
    Type of Medium: Online Resource
    ISSN: 1233-2356 , 2083-5736
    Language: Unknown
    Publisher: Akademiai Kiado Zrt.
    Publication Date: 2021
    detail.hit.zdb_id: 2090391-1
    Location Call Number Limitation Availability
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  • 2
    In: Acta Chromatographica, Akademiai Kiado Zrt., Vol. 33, No. 2 ( 2021-03-19), p. 153-161
    Abstract: Toddalia asiatica (Linn) Lam ( T. asiatica ) as a traditional Miao medicine was investigated to find rational alternative medicinal parts for T. asiatica root bark and its antitumor chemical constituents by quantitative pharmacognostic microscopy, high performance liquid chromatography (HPLC) fingerprint and multivariate statistical analysis. A bivariate correlation analysis method based on microscopic characteristics and content of chemical constituents was established for the first time, there were some regular discoveries between powder microscopic characteristics and common chromatographic peaks of T. asiatica through quantitative pharmacognostic microscopy, cork cells, calcium oxalate square crystal, brown clump, starch granule and phloem fiber, as powder microscopic characteristics may be placed where the main chemical constitutes were enriched. Scores plot of principal component analysis (PCA) and dendrogram of hierarchical clustering analysis (HCA) showed that 18 T. asiatica samples were distinguished correctly, clustered clearly into two main groups as follows: S01∼S03 (root bark) and S07∼S09 (stem bark) in cluster 1, S04∼S06 and S10∼S18 in cluster 2. Nineteen common peaks were obtained in HPLC fingerprint of T. asiatica , loadings plot of PCA indicated seven compounds played important roles in different part of samples (P10 〉 P08 〉 P07 〉 P14 〉 P16 〉 P17 〉 P19), peaks 04, 06, 07, 08, 10 were identified as hesperidin, 4-methoxycinnamic acid, toddalolactone, isopimpinlline and pimpinellin. MTT assay was used to determine the inhibitory activity of different medicinal parts of T. asiatica on human breast cancer MCF-7 cells, all parts of T. asiatica had different inhibitory effects on MCF-7 cell lines, root and stem barks of T. asiatica showed the best inhibitory activity. The relationship between chemical constituents and the inhibitions on MCF-7 cell had been established, significant antitumor constituents of T. asiatica were identified by correlation analysis, the order of the antitumor effect of the main compounds was P07 (toddalolactone) 〉 P16 〉 P06 (4-methoxycinnamic acid), P11 〉 P18 〉 P10 (pimpinellin) 〉 P08 (isopimpinellin) 〉 P01 〉 P19 〉 P14 〉 P04 (hesperidin) 〉 P17, which were antitumor chemical constituents of T. asiatica root bark. T. asiatica stem bark was the most rational alternative medicinal part for T. asiatica root bark.
    Type of Medium: Online Resource
    ISSN: 1233-2356 , 2083-5736
    Language: Unknown
    Publisher: Akademiai Kiado Zrt.
    Publication Date: 2021
    detail.hit.zdb_id: 2090391-1
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
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