ABSTRACT
ObjectiveTo explore the material basis for the difference in the efficacy of different parts of mulberry based on molecular connectivity index （MCI）. MethodBy referring to the relevant literature at home and abroad and traditional Chinese medicine systems pharmacology database and analysis platform （TCMSP） database， the chemical composition database of mulberry-source medicinal materials was established. Venn analysis was carried out on the components among mulberry-source medicinal materials. The components in the database were divided into 10 categories， and the composition information was analyzed. According to MCI value， all components of mulberry-source medicinal materials were divided into different groups. The angle cosine method was used to calculate the MCI similarity. The average MCI values of the common component group from 0-8 orders and CI of mulberry-source medicinal materials were calculated. ResultThe components with high similarity such as （+）-cycloolivil， 1′-methoxy-2′-hydroxydihydromollugin， kuwanon， morusin and 1-deoxynojirimycin were selected as potential pharmacodynamic components. Mulberry-source medicinal materials could be divided into five component groups. The similarity between component groups and total components was 0.760-0.999， and the similarity between component groups was 0.248-0.999. In Mori Ramulus， Mori Folium， Mori Cortex and Mori Fructus， the average MCI values of their flavonoids from 0-8 orders were 4.57， 4.59， 6.41， 4.24， respectively. The average MCI values of alkaloids from 0-8 orders were 2.65， 4.55， 2.58， 2.78， respectively. The average CI values from 0-8 orders were 5.51， 5.49， 5.44 and 2.88， respectively. ConclusionIt is preliminarily concluded that there are differences in the flavonoids and pathways of hypoglycemic effects between Mori Cortex and the other three mulberry-source medicinal materials. The MCI values of alkaloids from 0-8 orders in Mori Folium and Mori Fructus were higher， but their inhibitory activity of α-glucosidase were lower than those of Mori Ramulus and Mori Cortex. The structural characteristics of the total components of Mori Fructus represented by CI were quite different from the other three mulberry-source medicinal materials.
ABSTRACT
The safety and effectiveness of Chinese materia medica (CMM) depend on its quality, and the modernization of CMM quality control system is an important prerequisite for the internationalization of traditional Chinese medicine (TCM). Up to now, the quality research approach of CMM is the key technology for TCM industry. In recent years, with the development of modern life science, chemistry science, analytical science and technology, the quality research level of CMM has been greatly improved, but it still stays on the two evaluation models based on chemical composition and biological effect. For single compound, because the effect is proportional to the content of components, the chemical composition can be used for quality control. However, for multi-component system of CMM, how to establish the dose-effect relationship between effects and components and find the markers reflecting their quality has become the focus of the quality control of CMM for TCM industry. Based on the theory of supramolecular “imprinting template” and “Qi-xi” put forward earlier, this paper first analyzed the characteristics of supramolecular “imprinting template” for the quality of CMM, clarified the essence of quality control of CMM, and proposed the attributes of supramolecular “imprinting template” to reflect the main effect of CMM. The control strategy of quality markers of CMM represented by core index will provide a new and more accurate characterization and calculation model for quality control of CMM.