ABSTRACT
ObjectiveTo explore the interaction among root fungi of Stellaria dichotoma var. lanceolata， soil factors， and main components of medicinal materials in lithosol habitats. MethodHigh-throughput sequencing technology was employed to determine the fungal community of the root system of S. dichotoma var. lanceolata at different levels （bulk soil， rhizosphere soil， rhizoplane soil， and root interior） and the soil properties of the root system （bulk and rhizosphere）， and the relationship among the fungal community， soil properties， and the main components of medicinal materials was analyzed. ResultThe total phosphorus， available phosphorus， alkaline nitrogen， dissolved organic carbon， and soil water content in the rhizosphere soil of S. dichotoma var. lanceolata were slightly higher than those in the rhizosphere， but the difference was not significant. Ascomycota is the dominant phylum of root fungi in S. dichotoma var. lanceolata. In the progressive level of bulk-rhizosphere-rhizoplane-root interior system， although the fungal diversity gradually decreased， the abundance of Hypocreales， a new phylum （unclassified_ k_ Fungi）， Helotiales， and Natipusilales gradually increased， among which Hypocreales is the most important fungal group in the root system of S. dichotoma var. lanceolata. The structural equation model （SEM） shows that the physicochemical factors of the root-soil play an important regulatory role in the fungal community and the main components of medicinal herbs， with soil total nitrogen， alkaline nitrogen， soil water content， and pH being the main regulatory factors. Soil nitrogen content is the key to promoting the main components of the medicinal herbs， and Penicillium fungi are the key fungal group to regulate the main components of the medicinal herbs. ConclusionIt highlights that the physicochemical properties of the soil of S. dichotoma var. lanceolata play a crucial role in the fungal community and the components of medicinal materials. Hypocreales fungi in the root of S. dichotoma var. lanceolata were an important group， and Penicillium fungi had a certain role in mediating the components of medicinal materials.
ABSTRACT
Objective: To study the correlation between the content changes of main medicinal ingredients and the color values of Rhei Radix et Rhizoma during storage based on the principle of chromaticity analysis,and to provide reference for studying on the mechanism of discoloration and improving the quality evaluation of Rhei Radix et Rhizoma. Method: Simulated accelerated test was adopted in this study, where Rhei Radix et Rhizoma was stored under high temperature(40±5)℃,high humidity RH(92.5±5)%and strong light(4 000±500)Lx conditions to accelerate its discoloration. For the samples taken at different time points,the color value was determined by spectrophotometer and the total contents of anthraquinone and free anthraquinones,sennoside A,B,catechin and gallic acid were determined by high performance liquid chromatography (HPLC). The correlation between the effective components and the color value of rhubarb was analyzed by SPSS software. Result: During the storage process,it was observed by the eye that the color of Rhei Radix et Rhizoma was significantly darker and darker in the simulated acceleration test. According to the analysis of the chromaticity value results,the changes of chromaticity values L*and E*ab of Rhei Radix et Rhizoma were significantly negatively correlated with free strontium content(PPa* was significantly negatively correlated with gallic acid(PPConclusion: There is a certain correlation between the change of color value and the content of six medicinal ingredients during Rhei Radix et Rhizoma storage.
ABSTRACT
Objective To explore whether evolving window orthogonal projection analytical method can be used in the chromatographic peaks matching between traditional Chinese medicine preparation and its medicinal ingredients in prescription. Methods The fingerprints of Gualou Xiebai Baijiu Decoction and the herbs (Gualou and Xiebai) in its prescription were established by using high performance liquid chromatography-photodiode array detector (HPLC-PDAD), and the HPLC peaks in fingerprints of Gualou Xiebai Baijiu Decoction and the herbs in its prescription were matched according to the principle of evolving window orthogonal projection analytical method. Results Evolving window orthogonal projection analytical method could match the chromatogram peaks well between different fingerprints of Gualou Xiebai Baijiu Decoction and the herbs in its prescription. There were 20 common peaks between the ethyl acetate extraction of Gualou Xiebai Baijiu Decoction and Gualou, and 9 common peaks between the n-butanol extraction of Gualou Xiebai Baijiu Decoction and Xiebai. Conclusion Evolving window orthogonal projection analytical method can be used in the chromatographic peaks matching between traditional Chinese medicine preparation and its medicinal ingredients in prescription.
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NTCP is specifically expressed on the basolateral membrane of hepatocytes, participating in the enterohepatic circulation of bile salts, especially conjugated bile salts, to maintain bile salts homeostasis. In addition, recent studies have found that NTCP is a functional receptor of HBV and HDV. Therefore, it is important to study the interaction between drugs and NTCP and identify the inhibitors/substrates of NTCP. In the present study, a LLC-PK1 cell model stably expressing human NTCP was established, which was simple and suitable for high throughput screening, and utilized to screen and verify the potential inhibitors of NTCP from 102 herbal medicinal ingredients. The results showed that ginkgolic acid (GA) (13 : 0), GA (15 : 1), GA (17 : 1), erythrosine B, silibinin, and emodin have inhibitory effects on NTCP uptake of TCNa in a concentration-dependent manner. Among them, GA (13 : 0) and GA (15 : 1) exhibited the stronger inhibitory effects, with IC50 values being less than 8.3 and 13.5 μmol·L(-1), respectively, than the classical inhibitor, cyclosporin A (CsA) (IC50 = 20.33 μmol·L(-1)). Further research demonstrated that GA (13 : 0), GA (15 : 1), GA (17 : 1), silibinin, and emodin were not substrates of NTCP. These findings might contribute to a better understanding of the disposition of the herbal ingredients in vivo, especially in biliary excretion.
Subject(s)
Animals , Humans , Drug Evaluation, Preclinical , Kinetics , LLC-PK1 Cells , Models, Biological , Organic Anion Transporters, Sodium-Dependent , Chemistry , Metabolism , Plant Extracts , Chemistry , Pharmacology , Plants, Medicinal , Chemistry , Structure-Activity Relationship , Swine , Symporters , Chemistry , MetabolismABSTRACT
Research on the history of medicine in Korea in the form of modern scholarship began with the publication in 1930 of Yi Neunghwa's "A History of the Development of Medicine in Korea." The purpose of the present study lies in surveying studies on the history of medicine in Korea in the past 80 years since the publication of Yi's paper. In terms of periodization, research on the history of medicine in Korea is bifurcated by the publication of two comprehensive histories.i. e., Miki Sakae's A History of Medicine and Disease in Korea (1963) and Kim Du-jong's The Complete History of Medicine in Korea (1966). Indeed, all earlier studies converged in these two books. Because Miki and Kim both had majored in Western medicine and conducted research based on similar perspectives, data, and methods, the two works overlap considerably, and Kim's book, as the later of the two, unfortunately lost the initiative to the former to a considerable extent. As a result of these two scholars' research, it became possible to trace the overall flow of the history of medicine in Korea. Following the publication of works by Miki and Kim and with the advent of the 1980's, research on the history of medicine in premodern Korea was renovated with the emergence of no fewer than some dozen new doctoral degree holders in the field. In fact, these young scholars went beyond surveying trends in each era to expand the scope of specific discussions and topics per era, to delve into the actual contents, and to elucidate the function of medicine in society. The fruits of studies conducted in the past 80 years on the history of medicine in premodern Korea can be summarized as follows. 1) before the 5th century AD: the existence of a comprehensive medical practice in regions inhabited by those considered to be the ancestors of the Korean people; and information on medication including ginseng. 2) 5th-10th centuries: the existence of professional medical posts; the management of medicine by the royal household; institutions for medical education; the import and use of Chinese medical texts; the compilation of independent medical texts; the transmission of medical knowledge to Japan; and the import and export of medicinal ingredients. 3) 10th-14th centuries: public medical organs; medicine focusing on domestic medication; the invitation of medical doctors and the transmission of new medicine from Song China; the inclusion of medicine in the civil service examinations; the compilation of diverse types of Korean medical texts including those on native medicinal ingredients; disaster relief organs; regional medical organs; regional medicinal ingredient tribute system; and the state's measures against infectious diseases. 4) 14th-17th centuries: the consolidation of traditional East Asian medicine; the consolidation of Korean medicine including native medicinal ingredients; the emergence of a medical tradition that stresses the Daoist preservation of health ; and the publication of dozens of types of Chinese and Korean medical texts led by the entral and regional governments. Also noteworthy is the emergence of simple medical texts on emergency relief, pregnancy and childbirth, smallpox, and epidemics ( as well as the dissemination of their vernacular editions. In addition, there were phenomena such as the increasing occupation of the posts of medical officials by the non-aristocratic middling jung'in class; the existence of Confucian scholar-physicians and women physicians; and the compilation of texts on independent external medicine. 5) 17th-19th centuries: the formation of medicinal ingredient markets; the spread of pharmacies throughout the provinces; a vogue for Ming Chinese medical texts; veneration for the Treasured Mirror of Eastern Medicine; the emergence of a positivistic stance toward medical research; a vogue for experiential remedies; interest in Western medicine; compilation of several medical texts on measles; criticism of Chinese traditional medicine and/or Korean traditional medicine; the spread of variolation; attempts to introduce smallpox vaccination ; Korean-Japanese medical exchange through the dispatch of Korean goodwill missions to Japan; a great vogue for the Treasured Mirror of Eastern Medicine in both China and Japan; the emergence of independent medical texts on acupuncture; the successful cultivation and massive export of ginseng; and the birth of the Sasang (4-type) constitutional typology, a native medical tradition.