Biopharmaceutical classification and transport mechanism of 4 alkaloids in Mongolian herbal medicine Sophorae Flavescentis Radix / 中国中药杂志

In this study, we studied the solubility and permeability of matrine, oxymatrine, sophoridine, and oxysophocarpine, four alkaloids in the Mongolian herbal medicine Sophorae Flavescentis Radix, and evaluated the absorption mechanism with the Caco-2 cell model, so as to provide a basis for the new drug development and efficacy evaluation of Sophorae Flavescentis Radix. The results showed that all the four alkaloids had high solubility and high permeability and can be well absorbed, belonging to the class-I drugs of Biopharmaceutical Classification System(BCS). The absorption(AP→BL) and excretion(BL→AP) of matrine and oxymatrine were not affected by the concentration while the absorption depended on P-gp protein. The absorption(AP→BL) and excretion(BL→AP) of sophoridine and oxysophocarpine were positively related to the concentration and time, and the absorption process was independent from P-gp protein. The results provide scientific reference and an experimental basis for the development of Mongolian medical prescriptions containing Sophorae Flavescentis Radix.

Identification of Gentiana rhodantha and Its Adulterants by DNA Barcoding Coupled with High Resolution Melting Analysis / 中国药学杂志

OBJECTIVE: To apply DNA barcoding coupled with high resolution melting analysis to distinguish Gentiana rhodantha from its adulterants. METHODS: The internal transcribed spacer 2 (ITS2) barcode was selected for HRM analysis to produce standard melting profile of the selected species. RESULTS: The ITS2 molecular regions coupled with HRM analysis can effectively differentiate five herbal species, including two Gentiana rhodantha and their four common adulterants. CONCLUSION: DNA barcoding coupled with HRM analysis is a accurate, reliable, rapid, cost-effective and robust tool, which may contribute to the quality control of traditional Chinese medicine in the natural health product industry.

Progress on treatment of rheumatoid arthritis with ethnodrugs / 中国中药杂志

Rheumatoid arthritis(RA) is a chronic autoimmune disease, belonging to the "Arthromyodynia (Bi Zheng)" category in traditional Chinese medicine. However, the ethnomedicine has a unique understanding of RA, with a long-term clinical experience accumulation and significant efficacy in the treatment of RA, and it has now become one of the important means in treatment of RA. On the basis of literature research, the understanding of RA and commonly used Tibetan medicine, Mongolian medicine, Hui medicine and other herbs and preparations were reviewed in this paper, with the aim of providing a reference for its clinical treatment of RA and research and development of innovative drugs.

Methodology of flash chromatography application in multi-component library construction of large ethnodrug compound prescription / 国际药学研究杂志

Objective: To establish the rapid method of multi-component library preparation of large ethnodrug compound prescription and offer large amounts of samples for active components high-throughput screening. Methods: The ethyl acetate extract from Mongolian medicine BaiMai Powder was separated into a series of fractions by linear gradient elution with flash chromatography. The separation efficiency was evaluated by high-performance liquid chromatography. Results: Twenty-nine sequential components were prepared from the ethyl acetate extract of the prescription, enrichment and separation of compounds with different nature were well complished. Conclusion: Multi-component library of ethnodrug compound prescription can be constructed by flash chromatography. This method will help to overcome the difficulty of the pharmacodynamic chemical substances research of large ethnodrug compound prescription.