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• W2997264645 abstract "Venenum Bufonis, a product of the secretions of Bufo gargarizans Cantor or B. melanostictus Schneider, possessed an array of pharmacological activities, such as cardiotonic, anti-tumor, antinociceptive, anti-inflammatory, anesthetic and antimicrobial activities. However, there were few efficient methods for quality evaluation of Venenum Bufonis medicinal materials and its related Chinese patent medicines. To establish an effective method for quality assessment of crude drugs and Chinese proprietary medicines of Venenum Bufonis, and explore the relationship of primary compounds - target - pathway - disease through a series of network databases. An ultra-high performance liquid chromatography coupled with tandem mass spectrometry (UHPLC-QqQ-MS/MS) method was developed and validated to simultaneously determine 14 bufadienolides for quantitative analysis of 71 batches of crude drugs and 20 kinds of Chinese patent medicines of Venenum Bufonis. Multiple reaction monitoring with good specificity and accuracy was applied to monitor the 14 bufadienolides in positive mode. The methodology was validated with good specificity, precision, stability, repeatability and recovery. The low limits of quantification were in the range of 0.1–2.7 ng/mL. The relative standard deviation values for intra- and inter-day precisions ranged from 0.98% to 6.3% and from 2.39% to 6.76%, respectively. The recovery was varied from 87.78% to 110.57% for crude drugs and 88.32%–100.96% for Chinese proprietary medicine (Shexiang Baoxin Pill). The contents of 14 analytes in 71 batches of crude drugs and 20 sorts of Chinese proprietary medicines were procured, the results showed that the contents of crude drugs collected from the market exhibited great variations. Furthermore, 13 batches of crude drugs were identified as counterfeit with no bufadienolides detected. In addition, the total contents of bufadienolides in the same drug showed great difference among products from various manufacturers or brands. Subsequently, 9 bufadienolides with the higher contents were applied to screen the anti-tumor effect by network pharmacology, and 8 pathways which had prior correlation with bufadienolides were disclosed. This method could be used for quality assessment of crude drugs and Chinese patent medicines of Venenum Bufonis, and the data could be served as the fundamental basis for drug research and development of Venenum Bufonis." @default.
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• W2997264645 date "2020-04-01" @default.
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• W2997264645 title "Quantitative analysis of fourteen bufadienolides in Venenum Bufonis crude drug and its Chinese patent medicines by ultra-high performance liquid chromatography coupled with tandem mass spectrometry" @default.
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• W2997264645 doi "https://doi.org/10.1016/j.jep.2019.112490" @default.
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