Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 3 de 3
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
1.
Zhongguo Zhong Yao Za Zhi ; 46(23): 6163-6177, 2021 Dec.
Artigo em Chinês | MEDLINE | ID: mdl-34951243

RESUMO

This study aimed to qualitatively analyze the chemical components in Xiaoer Chiqiao Qingre Granules(XRCQ) by UHPLC-LTQ-Orbitrap-MS/MS and identify its material basis. The absorbed components in plasma were combined for exploring the potential action mechanism by integrated network pharmacology. ACQUITY UPLC HSS T3(2.1 mm×100 mm, 1.8 µm) column and mobile phase system of 0.1% formic acid solution(A)-acetonitrile(B) were used for gradient elution, followed by high resolution liquid chromatography-mass spectrometry in both positive and negative ion scanning modes. According to the precise relative molecular mass and MS/MS fragment ions, a total of 124 chemical components were identified in XRCQ by the comparison with references and literature reports, among which 29 compounds were completely confirmed by comparison with reference substances. Then, the main absorbed components of XRCQ in plasma were also analyzed and clarified by UHPLC-LTQ-Orbitrap-MS/MS. BATMAN-TCM and SwissTargetPrediction were used for target prediction of absorbed components in plasma. Following the plotting of association network with Cytoscape 3.8.2, the core targets were subjected to GO and KEGG pathway enrichment analysis and a component-target-pathway network was constructed. A total of eight main targets of XRCQ against fever in children were obtained together with eight absorbed components in plasma, including glycyrhydinic acid, hesperidin, emodin, reticuline, daidzein, magnolignan C, magnolignan A, and magnolaldehyde D. It was inferred that XRCQ might improve alimentary system abnormality, inflammatory response, oxidative stress, and endocrine disorder through tumor necrosis factor, PI3 K-AKT, and other signaling pathways. The present study comprehensively expounded the chemical profiles of XRCQ and the main absorbed components in plasma and predicted the potential mechanism of XRCQ based on integrated network pharmacology, which has provided certain theoretical reference for the clinical application of XRCQ.


Assuntos
Medicamentos de Ervas Chinesas , Espectrometria de Massas em Tandem , Criança , Cromatografia Líquida de Alta Pressão , Cromatografia Líquida , Humanos
2.
J Anal Methods Chem ; 2021: 6333989, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34513111

RESUMO

In this study, a method using ultrahigh-performance liquid chromatography with photodiode array (UHPLC-PDA) was established and validated for the simultaneous quantification of 10 active components, including eight macamides and two glucosinolates, in Lepidium meyenii (maca). A gas chromatographic mass spectroscopy (GC-MS) method was used to determine the levels of three benzyl isothiocyanates and two sterols in maca. Liquid chromatographic separation was achieved on a Waters Acquity UHPLC HSS T3 column (2.1 mm × 100 mm, 1.8 µm) with gradient elution over 15 min. The mobile phase was (B) acetonitrile-(A) 10 mM aqueous ammonium phosphate, and the detection wavelength was 210 nm. The gas chromatographic separation was performed on an SH-Rxi-1 MS column, and the ionization mode was electron ionization (EI). Two methods were confirmed to have desirable precision (RSD < 1.58%), repeatability (RSD < 1.97%), stability (RSD < 1.76%), and good linearity (R 2 ≥ 0.999) within the test range. The recoveries were in the range of 96.79-109.99%, with an RSD below 2.39%. We applied the established methods and successfully analyzed 15 compounds in maca processed under different drying conditions, providing a comprehensive reference for maca processing method of development. In summary, this study provided two rapid and effective methods for the quantification of 15 active components, which contributed to the in-depth maca quality control and provided a reference for the development of maca products.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...