Herbal textual research on Flos Trollii / 中国药房

Flos Trollii is a traditional Chinese medicinal herb in China. The 2020 edition of the Chinese Pharmacopoeia （part 1） did not include the medicinal herb， its source is not clear， and there is a lack of relevantly systematic and comprehensive research. By consulting ancient Chinese herbal medicines， medical books and related literature， the textual research of Flos Trollii was conducted to verify the name， origin and producing area， so as to provide a reference for the clinical application and resource development of Flos Trollii. Through textual research， it could be seen that the name “Jinlianhua” was used as the correct name in the mainstream origin of the past dynasties， and there were still multiple synonyms such as Hanjinlian， Jinmeicao and so on， most of which originated from its growth environment and appearance. According to the distribution of varieties， it could be inferred that the mainstream origin of Flos Trollii in the Qing Dynasty and before was Trollius chinensis Bge. According to historical records， Flos Trollii were mostly produced in northern regions such as Hebei， Inner Mongolia， Shanxi， etc.， which was related to the fact that Flos Trollii liked cloudy， humid and cold environments. Based on the textual research results， the author suggested that the mainstream origin of the past dynasties T. chinensis Bge. should be selected for subsequent collection of Flos Trollii.

Research progress of pharmacological effects and clinical application of Trollius chinensis / 中国药房

Trollius chinensis has a wide range of pharmacological effects ，including anti-oxidative ，antibacterial，antiviral， anti-inflammatory，anti-tumor，anti-aging，antipyretic and analgesic effects ，relieving cough and removing phlegm ，viscera protection，and so on. Flavonoids and phenolic acids are the main medicinal components of it ，especially three monomers have a wide range of efficacy and have been studied more ，such as orientin ，vitexin and 2″-O-galactopyranosyl orientin. T. chinensis is mostly used in clinical practice in the form of Chinese patent medicines ，such as Jinlianhua granules ，Jinlianhua capsules ， Jinlianhua tablets and Jinlianhua oral liquid. These medicines are used to treatment of upper respiratory tract infection ，pharyngitis， tonsillitis，periodontitis，mumps，oral ulcer ，and hand-foot-mouth disease. They are usually used by combining with Western medicine. Due to its definite curative effect and less adverse drug reactions ，T. chinensis related preparations are more suitable for pediatric population ，and they can be used for the treatment of upper respiratory tract infection in children ，acute suppurative tonsillitis in children ，epidemic mumps in children ，hand-foot-mouth disease in children ，which is also one of its drug characteristics. This paper review the relevant literatures in recent 20 years from the respective of pharmacological effects and clinical applicationin order to provide reference for further promoting rational clinical application of T. chinensis and new drug research and development.

Isolation and identification of pathogen causing damping off at seedling stage of Trollius chinensis / 中国中药杂志

Trollius chinensis is a traditional Chinese medicinal material in China, the wild resource of T. chinensis are now exhausted, and commercial medicinal T. chinensis mainly depends on artificial cultivation. As one of the most severely happened diseases at the seedling period, damping off has been a serious threaten to the breeding of T. chinensis seedlings. However, no related research have been reported so far. So, the authors collected damping-off samples of T. chinensis in 2018 from seedling breeding nursery in Guyuan, Hebei province, and carried out study on taxonomic identification of the pathogen. Damping off occurs in the T. chinensis production area from mid-May to late June every year. At the beginning, brown lesions were observed on the basal stem, then the lesions circumferential expanded and constricted, and finally resulted in the fall and death of T. chinensis seedlings. Pathogenic isolate was growing rapidly on the PDA medium, well developed aerial mycelia were grey white at first, then turned brown gradually, and a great number of small dark brown sclerotia were developed in the middle and periphery of the colony. Mycelial diameter of the pathogen was about 7 to 10 μm, near right angle or acute angle branches, near branches with septa, branches and septa with constriction. After the healthy T. chinensis seedlings were inoculated by pathogenic isolate, damping-off was observed soon, and the symptom was as same as those observed in the field. Through homogenous blast, the rDNA-ITS sequence of the pathogenic isolate shown 99.49% to 99.84% homology with Rhizoctonia solani, R. solani AG-1 IC mycelium anastomosis group and Thanatephorus cucumeris, the sexual type of Rhizoctonia. Furthermore, obvious mycelial anastomosis phenomena were observed when the pathogenic isolate and R. solani AG-1 IC strain were confronting cultured. Based on the results above, the pathogenic isolate causing damping off of T. chinensis was identified as R. solani AG-1 IC mycelial anastomosis group. RESULTS:: in the present work have important significance for further research on basic biology of the pathogen and integrated control of damping off causing by it on T. chinensis.

Advances in Studies on Plants of Trollius / 中国实验方剂学杂志

There are 16 species and 7 varieties of medicinal plants of Trollius in China, with effects in clearing heat, detoxification and swelling, they are used for the treatment of acute and chronic tonsillitis, acute otitis media, chronic bronchitis and urinary tract infections. Through retrieval of literatures on nasturtium from 1972 to 2019 in a number of databases, such as CNKI, Wanfang Database, Baidu Academic and PubMed, the cultivation and quality control methods, extraction and purification processes, chemical composition, pharmacological effects, pharmacokinetics and metabolism of medicinal plants of the genus nasturtium were summarized. The researches of cultivation mainly focus on the establishment of seed treatment and tissue culture system. Quality control is mainly based on orientin and flavonoids. Research on extraction and purification technology mainly focused on the extraction and purification of total flavonoids. In terms of chemical composition, there are currently more than 100 major compounds isolated from this genus, including flavonoids, organic acids, alkaloids, coumarins and styrenes. Among them, there are 80 flavonoids, 12 organic acid monomers, 3 alkaloid monomers, 4 coumarin monomers and 14 styrene monomers. In terms of pharmacological action, there are mainly in vitro experiments of crude extracts of medicinal materials. The data of pharmacokinetics and metabolism mainly focus on the study of flavone monomers.

Study on the Spectrum-effect Relationship of Different Solvent Extracts from Trollius chinensis against Hypoxia/ reoxygenation Injury of Cardiomyocyte / 中国药房

OBJECTIVE：To study spectrum-effect relationship of 11 different solvent extracts from Trollius chinensis against hypoxia/reoxygenation injury of cardiomyocyte . METHODS ：HPLC-MS/MS method was used to establish the fingerprints of 11 different solvent extracts from T. chinensis ，the compounds corresponding to the common peaks were identified by comparing with the substance control and literature information. MTT assay was used to detect the effects of 11 different solvent extracts from T. chinensis on the survival rate of rat myocardial H 9c2 cells injured by hypoxia/reoxygenation. The MDA content ，ROS level in cells and LDH content in the supernatant were detected by ELISA. GRA and PLS method were used to analyze the spectrum-effect relationship between the compounds corresponding to common peak and anti-hypoxia/reoxygenation injury of cardiomyocyte （drug effect）. RESULTS ：There were 22 common peaks in 11 different solvent extracts from T. chinensis ，and 22 compounds were identified. Compared with hypoxia/reoxygenation injury group ，survival rate of hypoxia/reoxygenation injury+S 1-S6，S9 and S 10 groups were increased significantly ，while MDA content ，ROS level and LDH content were decreased significantly （P＜0.05）； ROS level and LDH content of hypoxia/reoxygenation injury+S 8 group w ere decreased significantly （P＜0.05）. The r of GRA analysis of 22 compounds with drug effects were all higher than 0.8. Except for peaks 1，2，7，13，14 and 21，r of PLS analysis of rest peaks with drug effects were higher than 0 发。电话：0431-86058683。E-mial：nml2000@163.com （being positive correlation ）. Top 9 common peaks in the list of contribution rate were peak 6＞11＞4＞5＞8＞9＞12＞10＞15. CONCLUSIONS ：Orientin（peak 6），vitexin（peak 11）， orientin-2″-O-β-L-galacto- pyranosl （peak 4），orientin-2″-O-β-D-Pyrine xylosides （peak 5），quercetin-3-O-glucopyranoside（peak 8），vitexin-2″-O-β-L-galactoside（peak 9），hyperoside（peak 12），vitexin-2″-O-β-D-pyrine xylosides （peak 10），2″-O-（2″′- methylbutyry-loxy）-orientin（peak 15）may be the main components of anti-hypoxia/reoxygenation injury of cardiomyocytes.

Prediction of Antiviral and Anti-inflammatory Mechanisms of Major Compounds from Flowers of Trollius Chinensis Based on Molecular Docking Technology / 中国中医药信息杂志

Objective To predict the antiviral and anti-inflammatory mechanisms of major compounds from the flowers of Trollius chinensis, namely, vitexin, orientin, 2"-O-β-L-galactopyranosylvitexin, 2"-O-β-L-galactopyranosylorientin, veratric acid, and trolline, by using the molecular docking technique. Methods Discovery Studio 2.5 software and Chinese Medicine Chemistry Database were employed for docking between the ligands including 6 compounds and the proteins including Toll-like receptors (TLRs) and neuraminidase (NA). The docking results and interactions of their functional domains were obtained by simulation analysis. Results Vitexin, orientin, 2"-O-β-L-galactopyranosylvitexin, veratric acid, and trolline were applied to one or more TLR, whereas 2"-O-β-L-galactopyranosylorientin could interact with neither of the proteins investigated. Flavonoids, namely vitexin, orientin, 2"-O-β-L-galactopyranosylvitexin and 2"-O-β-L-galactopyranosylorientin were applied to NA, whereas veratric acid and trolline could not interact with NA. Conclusion Five out of the 6 compounds have influence on the signaling pathways mediated by TLRs, and TLR3, 4, and 7 are their potential targets for antivirus and anti-inflammation. Four flavonoids can affect the activity of influenza virus by interacting with NA. This study can provide a basis for the investigation of the antiviral and anti-inflammatory effective compounds of the flowers of Trollius chinensis and the further development.

Ecology suitability study of Trollius chinensis / 中国中药杂志

Based on the distribution information of 110 samples and 55 environmental factors, Maxent model was used to predict the ecology suitability regions of Trollius chinensis. The study aims at providing theory basis for the cultivation of T. chinensis. The results showed that the Maxent model prediction result was good (AUC>0.9) and the main factors effecting the ecology suitability regions of T. chinensis were precipitation in July, standard deviation of seasonal variation of temperature, annual mean temperature, precipitation in August and altitude. The ecology suitable regions of T. chinensis mainly concentrated in Shanxi, Hebei, east of Inner Mongolia, west of Jilin and Liaoning, north of Shaanxi, south of Ningxia, east and south of Gansu, and east of Qinghai. The results indicated that except for traditional distribution regions, north of Shaanxi, south of Ningxia, east and south of Gansu, and east of Qinghai could selected as the regions for cultivation of T. chinensis. It provides theory basis for selecting suitable regions to cultivate T. chinensis.

Analysis on chemical constituents from flowers of Trollius ledebouri by UPLC-Q-TOF-MS / 中草药

Objective: The chemical constituents in the methanol extract from the flowers of Trollius ledebouri were rapidly identified using UPLC-Q-TOF-MS in positive and negative ion modes. Methods: The analysis was performed on an ACQUITY UPLC BEH C18 reverse phase column (100 mm × 2.1 mm, 1.7 μm). The mobile phase consisted of methanol and 0.1% formic acid was used for gradient elution, 0-5 min, 95%-60% A; 5-13 min, 60%-45% A; 13-20 min, 45%-0% A; 20.1-25 min, 95% A. The flow rate was 0.3 mL/min, the injection volume was 2 μL. The information of the compounds was analyzed by the positive and negative ion mass spectra and elements composition. Results: The results indicated that 14 compounds in the extract from the flowers of T. ledebouri had been identified by direct comparison in both positive and negative ion mass data, they were vevatric acid, vanillic acid, orietin, orietin-2″-O-β-L-galactopyranoside, orietin-2″-O-β-D-xylopyranoside, quercetin, hyperoside, vitexin, apigenin, luteolin, acacetin-7- O-neohesperidoside, acacetin, pectolinarigenin, and salvigenin. Conclusion: UPLC-Q-TOF-MS could be used to analyze the constituents in the extract from flowers of T. ledebouri and to provide the protection for the quality control of the pieces as well as the stability and efficacy in the late stage clinical application, and to provide a reference for clarifying the material basis of its efficacy.

Pharmacokinetics and Tissue Distribution of Orientin from Trollius chinensis in Rabbits / 中草药·英文版

Objective: To study the pharmacokinetics (PK) and tissue distribution of orientin in rabbits. Methods: The high-performance liquid chromatography method was developed and validated for the determination of orientin in rabbit plasma and tissues. The PK characteristics of orientin in rabbits were compared by three kinds of administration, iv, im, and ip injection, using 3P97 pharmacokinetic software to examine the PK parameters. Results: The elimination half-life (t1/2β) of three kinds of administration was higher than the distribution half-life (t1/2α). The PK of orientin eliminating in rabbit fitted the two compartment model. Orientin was mainly eliminated in rabbit. The distribution of orientin in tissue after iv injection was investigated, and the order of orientin AUC in each group was kidney > liver > lung > spleen > heart > brain. Conclusion: Orientin is distributed extensively in tissues such as kidney, liver, and lung. It is difficult for orientin to cross the blood brain barrier. © 2013 Tianjin Press of Chinese Herbal Medicines.

Absorption properties and mechanism of trolline and veratric acid and their implication to an evaluation of the effective components of the flowers of Trollius chinensis / 中国天然药物

AIM@#To study the absorption properties and mechanism of two important components, trolline and veratric acid, from the flowers of Trollius chinensis, in order to better understand the contribution of these two compounds to the effectiveness of these flowers.@*METHOD@#The human Caco-2 cell monolayer model was employed to study the transport of trolline and veratric acid from apical side (AP) to basal side (BL), and from BL to AP by determining the transport rates as the function of time and concentration and calculating apparent permeability coefficients (Papp).@*RESULTS@#Trolline and veratric acid were transported across Caco-2 cell monolayer through different mechanisms in a concentration dependent manner. Trolline was transported at a Papp level of 10(-6) cm·s(-1) with a Papp AP→BL/Papp BL→AP ratio of more than 1.8 or less than 0.8, while veratric acid was transported at a Papp level of 10(-5)cm·s(-1) with a Papp AP→BL/Papp BL→AP ratio of close to 1.0.@*CONCLUSION@#Trolline is moderately absorbed through an associative mechanism involving active and passive transport, and veratric acid is well-absorbed mainly through passive diffusion. These factors should be taken into account when chemically assessing the pharmacodynamic material basis of the flowers of T. chinensis.

Investigation on Flos Trollii: constituents and bioactivities / 中国天然药物

Flos Trollii, the flowers of Trollius chinensis Bunge, has been widely used in Chinese and Mongolian medicine for its efficacy of heat-clearing and detoxification. This drug has both medicinal and edible applications, and has led to various pharmacognosy, natural product chemistry, and pharmacology studies. As a result, its chemical constituents and bioactivities have been well-characterized in recent years. Nevertheless, a couple of critical issues, such as the major effective components, are still unresolved. The present review summarizes research progress on this drug regarding the constituents and bioactivities based on investigations in these laboratories and the results reported in recent publications. In addition, the pending issues are discussed and constructive suggestions for further investigation are proposed.

Contribution evaluation of the floral parts to orientin and vitexin concentrations in the flowers of Trollius chinensis / 中国天然药物

AIM@#To provide a comprehensive procedure to evaluate the contribution of the floral parts to the yield of the major components from the flowers of Trollius chinensis, to underlay the selective breeding, cultivation, development, and utilization of the flowers.@*METHODS@#Five floral parts from eleven batches of the flowers of T. chinensis were examined by HPLC analysis for the content of orientin and vitexin, and by gravimetric analysis for their respective mass fraction. The contribution of each floral part was calculated using mathematical methods based on the results of the content and mass fraction. Variance analysis was carried out by Kruskal-Wallis H test and PCA method.@*RESULTS@#The calculated mean contributions of calyx, corolla, stamens and pistils, stalk, and ovary to the yield of both orientin and vitexin were 76.99% and 71.93%, 9.60% and 8.33%, 9.21% and 8.10%, 2.17% and 6.62%, and 2.03% and 5.02%, respectively.@*CONCLUSION@#The floral parts contribute unequally to the yield of orientin and vitexin, and the calyx contributes the highest and makes a significant difference compared with any other part.