ABSTRACT
Ma-Xing-Shi-Gan Decoction is a classic prescription. However, the interaction among multiple components of the decoction and the change of phase state are not clear. Moreover, the relationship between the physical phase state aggregated by multiple components and the efficacy still needs to be studied. In this study, we monitored the particle size changes of Ma-Xing-Shi-Gan Decoction in real time. Then we isolated different phase states by centrifugation, analyzed their composition distribution and tested their antibacterial activity. We added chemical interference agents to investigate the interaction of multi-component physical phase states accompanied by the observation of particle size change and morphology. We also studied the correlation between antibacterial activity and physical structure of phase states. The results showed during boiling process the degree of hybridization of particles was decreased and the particle size distribution was narrowed and stabilized at 170 nm. The distribution of organic and inorganic components was heterogeneous among different phase states. S-13500, supernatant isolated by 13 500 ×g centrifugation, constituted by ephedrine, amygdalin, glycyrrhizic acid and inorganic components Ca, K, Mg, etc., had the strongest antibacterial activity. The molecular interaction force in the active physical phase state was mainly hydrophobic and hydrogen bond. The destruction of the interaction force will lead to the change of phase structure and the decrease of antibacterial activity in vitro and in vivo. This study confirms that, in the boiling process of the Ma-Xing-Shi-Gan Decoction, the chemical components interweave and interact to form new physical phase states, leading to heterogeneous distribution of components. The antimicrobial activity of the active phase depends on both chemical composition and physical structure, which provides a direct evidence for the physical basis of the efficacy of traditional Chinese medicine.
ABSTRACT
The purpose of this study was to explore the interaction mechanism between glycyrrhiza protein and berberine in the decocting process of Rhizoma Coptidis and Liquorice and its effect on the pharmacodynamic effect. In this experiment, licorice crude protein was obtained from licorice decoction pieces, and it was found that licorice crude protein and berberine could form spherical supramolecular particles after decocting together. Morphological characterization was carried out by using Malvin particle size analyzer and emission scanning electron microscopy, and the supramolecular particles were observed to be nanoscale, which was significantly different from the morphology of licorice protein and berberine. The results of ultraviolet, infrared and fluorescence spectroscopy showed that the mechanism of molecular interaction was induced by weak bonds such as electrostatic attraction and hydrophobic interaction. Furthermore, the antimicrobial activity of berberine was significantly affected by the supramolecular particles of licorice protein-berberine, which were significantly different from the mechanical mixture. This study reveals the pharmacological value of macromolecular substances such as proteins in the decoction of licorice and Coptis chinensis from a new perspective, which is helpful to promote the secondary development of clinical effective prescriptions, especially the research on the pharmacological substance basis of classic famous prescriptions.
ABSTRACT
At present, the 2019-novel coronavirus (2019-nCoV) is rampant all over the country, and controlling the spread of its epidemic has become a top priority. It is very difficult to control the epidemic spreading because there is no specific drug to fight against it. Therefore, it is urgent task for us to develop a specific drug as soon as possible, and attracting worldwide attention. The studies on anti-2019-nCoV drugs were generally carried out in three modes, as vaccine, chemical drugs and traditional Chinese medicine (TCM). Because the developing on vaccines and chemicals takes too long, it is hard to solve the urgent problem. Moreover, the RNA of coronavirus has been recombined so quickly that the vaccines and drugs studied with great efforts not only may miss the epidemic time, but also cannot be used in the next generation of new coronavirus treatment, as a result that the work of epidemic prevention is formidable. However, the prescriptions from traditional Chinese medicine theory can cure the epidemic disease, but how to develop it into a specific drug with clear chemical composition and clear pharmacologic mechanism, is also an urgent problem to be solved. In this paper, the new coronavirus and its drug development are reviewed, while the advantages and disadvantages are analyzed, and the drug dilemma research phenomenon is clarified by using the supramolecular “qi chromatography” theory. It is suggested that the strategy of anti-coronavirus drug developing should be put forward based on the impact of “qi chromatography” of biological supramolecular “imprinting template”, in order to develop new drugs against 2019-nCoV to control the spread of the epidemic as quick as we can, and establish a new research and development model of anti-coronavirus drug on integration of traditional Chinese and Western medicine, turning passive into active.
ABSTRACT
Based on the current situation and development trend of the modernization of traditional Chinese medicine (TCM) theory, combined with three major frontier scientific problems and three major engineering and technical problems needed to be solved, the crux of the modernization problem of TCM was identified, the way to solve the modernization problem of TCM was put forward, and the decisive role of supramolecular "qi chromatography" theory of TCM in cracking these problems was elaborated. The human body and Chinese materia medica are observed clearly in the long history of biological evolution in nature, while supramolecular chemistry has played an important role in analyzing the evolutionary trajectory of life and tracing the origin of TCM theory. In the long process of biological evolution in nature, all kinds of molecules in nature follow supramolecular chemistry, forming supramolecular bodies according to "imprinted template" step by step, from simple to complex, from inanimate inorganic complexes to living enzyme systems, from single simple molecules to complex supramolecular machines, through which the interaction of the biological molecules runs in the chain of organisms composed of supramolecular bodies. Meridians, which are the result of the orderly arrangement of the "imprinted template" channel structure step by step, are the basic form to control molecules. Under the impetus of human heart beating, the small molecules substances dissolved in blood migrate into and act on according to the "imprinting template" embed in main macromolecule of meridians and viscera. It shows the anisotropy of the action of meridians and viscera on small molecules, that is visceral phenomena, on which the essential of life science and the original theory of "principle", "method", "prescription" and "medicine" for TCM will be clarified. Major scientific and engineering problems of TCM will be solved on the basis of supramolecular chemistry, and the basic theory of TCM will be reconstructed and modernized into a union with contemporary medicine.
ABSTRACT
The Chinese medicine is mostly derived from plants or animals, highly polymorphic, with dynamic components which are reflected by the characteristic peaks and fingerprint peaks in chromatographic fingerprints. The chromatopharmacokinetics method for determined components is not applicable due to dynamic changes of chromatopharmacokinetics. Based on the preliminary study, dynamic pharmacokinetics mathematical model for multiple components in Chinese medicine was set up and verified by Buyang Huanwu Decoction as the model drug, applying the principle of the total quantum statistical moment(TQSM), superimposing or subtracting the relevant statistical parameters in blood samples and blank samples. This provided a new method for the chromatopharmacokinetic study of Chinese medicine. HPLC was used to determine the TQSM parameters in blood and blank sample fingerprints of Buyang Huanwu Decoction at each point, and the overall TQSM parameters of drug-containing blood sample and blank samples were obtained with addition calculation of TQSM; while the initial TQSM of the pure drug can be obtained with subtraction calculation. The metabolic and absorption equilibrium constants were calculated iteratively to a steady state using the estimated metabolic equilibrium constants, then the metabolic chromatopharmacokinetic parameters in rats were obtained: VUC_T 1.262×10~8 mAu·s, MRT_T 37.48 h, VRT_T 9.016×10~2 h~2, CL_T 25.79 mL·h~(-1)·kg~(-1), Vs 1.586×10~2 mL·kg~(-1), t_(T,0.5) 6.15 h, respectively. This suggested that 95% of the compounds in whole recipe were metabolized and secreted from the body after 0-96.33 h. The experiment verified that the established mathematical model and the total quantum moment statistics parameters can represent the dose-time relationship of Buyang Huanwu Decoction, which can be used to study on in vivo metabolism dynamics for Chinese medicine.
Subject(s)
Animals , Rats , Chromatography, High Pressure Liquid , Drugs, Chinese Herbal , PharmacokineticsABSTRACT
Chinese materia medica (CMM) is a multi-component system. In addition to the study on single-component druggability, the focus should be also on how to integrate the rules of single-component druggability to construct a research system of suitable multi-component druggability of CMM. According to the basic theory of CMM guidance, the druggability of CMM has been accumulated by long-term clinical practice experience, and the curative effect is affirmed. The most critical issue is how to determine the attribution and intermolecular interaction of the well-defined CMM component group and develop a component CMM. However, how to integrate the physicochemical and biological apparent properties of the multi-component based on the apparent physical and chemical properties of the single-component is the key to the study on druggability and preparation modification of CMM. Therefore, the druggability study of the single-component medicine and the study of the change rules of multi-component CMM druggability by using compatibility principle of CMM and modern supramolecular chemistry theory are needed to performed to study on the druggability of CMM. The combination of CMM druggability, preparations and chemical modifications can maximize the success rate of the development of new CMMs. The characteristic of the autonomous “Qi-xi” for CMM “imprinting template” of supramolecules has an important guiding role in druggability research of CMM both in theory and practice.