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Siwei Li

Bio: Siwei Li is an academic researcher from Guangxi University. The author has co-authored 1 publications.

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TL;DR: Wang et al. as discussed by the authors presented a comprehensive analysis of chemical constituents of YGMM and prototypes in plasma, and the data analysis strategy developed in this study showed high efficiency in the structural elucidations.
Abstract: Yiganmingmu oral liquid (YGMM), a well known over-the-counter (OTC) drug in China, is composed of 12 types of valuable herbal medicines and has been widely used in clinical for the treatment of soreness and weakness of waist and knees, dizziness, memory loss, and fatigue. However, the chemical compositions of YGMM and its absorbed compounds in plasma remain unclear. Since chemical investigation is the first important step to reveal effects and action mechanisms of traditional Chinese medicine (TCM), in this study, based on the self built components database, systematic characterization of the chemical profile of YGMM in vitro was carried out by using a reliable UPLC-Q-TOF-MS method. Moreover, to obtain better understanding of the absorbed prototypes in plasma, serum pharmacochemistry analysis of YGMM after oral administration was conducted by using cynomolgus monkeys as animal model. A total of 667 constituents from the 12 single herbal medicines were collected in the self built components database by searching the reported literatures, and 415 of them were initially screened as candidate compounds in YGMM by comparison of their experimental accurate mass measurements with those theoretical values. After that, 117 compounds including 17 phenolic acids, 25 flavonoids, 4 alkaloids, 10 phthalides, 5 monoterpenes, 8 triterpenoid saponins, 9 anthraquinones, and 39 other compounds, were unambiguously identified or tentatively characterized by analysing their MS/MS fragmentation patterns, and also by comparison with reference standards and those data reported in the literatures. 61 prototypes absorbed in plasma of cynomolgus monkey, including 13 phenolic acids, 21 flavonoids, 8 phthalides, 3 monoterpenes, 4 triterpenoid saponins, and 12 other compounds were tentatively assigned by serum pharmacochemistry analysis after oral administration. It was the first comprehensive analysis of chemical constituents of YGMM and prototypes in plasma, and the data analysis strategy developed in this study showed high efficiency in the structural elucidations. The results might provide scientific evidence for further research on material basis of YGMM.

6 citations


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Journal ArticleDOI
TL;DR: Wang et al. as mentioned in this paper investigated the fingerprints, phytochemicals and quality evaluation of flavonoids from abrus precatorius leaves (APL) for the first time, and established an UPLC-ESI-Q-TOF/MS method to evaluate the fingerprints.

4 citations

Journal ArticleDOI
TL;DR: In this article , the mass spectral data of Mai-Luo-Shu-Tong pill were acquired by ultra-high performance liquid chromatography coupled with Q Exactive hybrid Quadrupole-Orbitrap high resolution mass spectrometry.
Abstract: Mai-Luo-Shu-Tong pill is an effective traditional Chinese medicine formula for the treatment of superficial thrombophlebitis, but it was insufficiently chemically scrutinized. In this study, the mass spectral data of Mai-Luo-Shu-Tong pill were acquired by ultra-high performance liquid chromatography coupled with Q Exactive hybrid Quadrupole-Orbitrap high resolution mass spectrometry. Then, a data mining strategy combining multiple data processing methods was used to identify chemical constituents in Mai-Luo-Shu-Tong pill by constructing a database of precursor ions and summarizing the mass spectral fragmentation behaviors. As a result, a total of 211 compounds including 70 flavonoids, 56 terpenoids, 37 phenolic acids and 48 others were identified in positive and negative ion modes. Among them, 66 compounds have passed comparison verification with reference standards, 145 compounds were identified based on the data mining strategy combining the characteristic cleavage behaviour of homologous compounds and fragment ions and 4 compounds were potentially new compounds. This study provides a database for quality evaluation and further study of Mai-Luo-Shu-Tong pill in vivo. Moreover, it provides a reference for the characterization of the chemical constituents of other traditional Chinese medicine formulae.

1 citations

Journal ArticleDOI
TL;DR: In this article , an efficient and sensitive targeted and untargeted UHPLC/ESI-Q-Orbitrap MS method, together with mass defect filter and precursor ion list, was established firstly for the profiling of different EZF formulas.
Abstract: BACKGROUND Erzhi formula (EZF) is a traditional Chinese medicine prescription, which has been widely used in the treatment of osteoporosis and premature ovarian failure. OBJECTIVE To enhance curative effects, the other two herbal medicines, including Spatholobi Caulis (SC) and Achyranthes bidentata Blume (ABB), were added into the original EZF formula to obtain two new Jiawei-EZF (JW-EZF) preparations. To clarify the effect of the compatibility of herbs for original formulas, the chemical constituents and bioactive compounds in vivo were detected. METHODS An efficient and sensitive targeted and untargeted UHPLC/ESI-Q-Orbitrap MS method, together with mass defect filter and precursor ion list, was established firstly for the profiling of different EZF formulas. Furthermore, eleven absorbed compounds (apigenin, luteoloside, luteolin, oleuropein, wedelolactone, acteoside, specnuezhenide, 11-methyloleoside, ecliptasaponin A, formononetin, and β-ecdysone) were simultaneously quantified in rat plasma. RESULTS A total of 124, 162, and 177 compounds were identified or tentatively identified in EZF, JW-3-EZF (EZF+SC) and JW-4-EZF (EZF+SC+ABB), respectively. 110 compounds were found to be common constituents in the three formulas. Moreover, 66 prototypes were unambiguously identified in the rats' plasma after oral administration of the three formulas using the same strategy. 11 out of the 66 absorbed components were simultaneously quantitated in the pharmacokinetic (PK) study. Compared to the original EZF, the plasma AUC(0-24h) and AUC(0-∞) of apigenin, 11-methyloleoside, luteolin, luteoloside, wedelolactone, and acteoside were found to be significantly increased after oral administration of JW-3-EZF, and plasma AUC(0-24h) and AUC(0-∞) of apigenin, wedelolactone, and acteoside, were also found to be significantly increased after JW-4-EZF administration. CONCLUSION The combined qualitative and quantitative methods were used to provide a potential approach to the characterization and quality control of the Traditional Chinese Medicine (TCM) and its preparations.

1 citations

Journal ArticleDOI
TL;DR: In vivo study found that GME can significantly inhibit the growth and migration of SW480 cells in xenograft zebrafish and it has the potential to be developed as an anticancer agent.
Abstract: Abstract Context Gnetum montanum Markgr. (Gnetaceae) is used to treat rheumatic arthralgia and bruises in the clinic. Objective To exam the activity and mechanism of G. montanum extract (GME) against colon cancer cells SW480. Materials and methods The anti-proliferative activity of GME (0–120 μg/mL) on SW480 cells was determined using MTS assay at 24, 48, and 72 h. The in vitro activity of GME (0–120 μg/mL) on SW480 cells was investigated using flow cytometry and western blotting analysis. The in vivo activity of GME was evaluated using xenograft tumour model of zebrafish and nude mice. The chemical composition of GME was detected by using HPLC–MS/MS. Results The IC50 value SW480 cells viability by GME were 126.50, 78.25, and 50.77 μg/mL, respectively, for 24, 48, and 72 h. The experiments showed that apoptotic cells and G2/M phase cells increased from 20.81 to 61.53% (p < 0.01) and 25.76 to 34.93% with 120 μg/mL GME, respectively. GME also down-regulated the protein expression of P-AKT, P-GSK-3β, P-PDK1, P-c-Raf, caspase-3, and Bcl-2, and up-regulated the expression cleaved caspase-3, cleaved PARP, and Bax. In vivo study found that GME can significantly inhibit the growth and migration of SW480 cells in xenograft zebrafish. GME reduced the nude mice tumour weight to approximately 32.19% at 28 mg/kg/day and to 53.17% (p < 0.01) at 56 mg/kg/day. Forty-two compounds were identified from the GME. Discussion and conclusions GME has a significant antitumor effect on colon cancer cells SW480, and it has the potential to be developed as an anticancer agent.

1 citations

Posted ContentDOI
19 Apr 2023
TL;DR: Wang et al. as discussed by the authors revealed the substances and potential mechanisms of the anti-epilepsy activity of P. tenuifolia and Z. jujuba extract using LC-MS/MS, network pharmacology, ethology and molecular biology methods.
Abstract: Abstract Background Epilepsy is a typical nervous system disorders identified by the spontaneous recurrence of seizures which injure periods of electroencephalographic activity and behavior. Traditional Chinese Medicine (TCM) herb pairs Polygala tenuifolia and Zizyphus jujuba have been used in treatment of epilepsy in China, while the mechanism of action still remains unclear. This article aims to disclose the substances and potential mechanisms of the anti-epilepsy activity of P. tenuifolia and Z. jujuba extract ( PZE ) using LC-MS/MS, network pharmacology, ethology and molecular biology methods. Methods With the help of the self-built components database, identification of the chemical parameters of PZE was possessed through LC-MS/MS method, and the “ingredient-target-pathway” network of PZE was established through online databeses. Molecular docking was performed using Discovery Studio Visualizer. In the setting of the epilepsy model, pentylenetetrazol (PTZ, 10 mg/kg) was administered intraperitoneally injected for a period of 21 days. Mice were assessed for anxiety-like behavior by Elevated plus maze test, open field test, forced swimming test and tail suspension test. HE staining, western blotting, and immunofluorescence staining were used to detect morphological changes and signal pathway. Results Through network analysis, 37 active ingredients were obtained from PZE , SLC6A4, CHRNA4 and MAOA and were found to play a major role in the PPI network. GO and KEGG analyses that display their anti-epilepsy activity. The"Ingredient-target-pathway"network diagram consists of 99 targets, 24 kinds of constituents, and 20 signaling pathways. The values of M15 and M17 show the largest degree. Molecular docking analysis shows the key components screened by network pharmacology have a good interaction with the predicted targets. Animal experiments results showed that: 1) PZE effectively lengthened the latent time of PTZ-induced epilepsy in mice model. 2) PTZ-induced depression-like behavior was strikingly ameliorated by PZE . 3) Hippocampal neurons are significantly shielded by PZE . 4) PZE was shown to play a key role in modulating the CHRNA4/CaMK II signaling pathway in to show anti-epilepsy potency. Conclusion This study has successfully identified constituents of PZE through LC-MS/MS methods and predicted the potential targets and CHRNA4/CaMK II as potential signaling pathways of anti-epilepsy effects for PZE , which was proved by animal experiments. The results of this paper are conducive to the systematic elucidating of its mechanism of action and the development of TCM-based anti-epilepsy agents.