Research progress of Curcuma kwangsiensis root tubers and analysis of liver protection and anti-tumor mechanisms based on Q-markers / 中国中药杂志

Curcuma kwangsiensis root tuber is a widely used genuine medicinal material in Guangxi, with the main active components of terpenoids and curcumins. It has the effects of promoting blood circulation to relieve pain, moving Qi to relieve depression, clearing heart and cooling blood, promoting gallbladder function and anti-icterus. Modern research has proved its functions in liver protection, anti-tumor, anti-oxidation, blood lipid reduction and immunosuppression. Considering the research progress of C. kwangsiensis root tubers and the core concept of quality marker(Q-marker), we predicted the Q-markers of C. kwangsiensis root tubers from plant phylogeny, chemical component specificity, traditional pharmacodynamic properties, new pharmacodynamic uses, chemical component measurability, processing methods, compatibility, and components migrating to blood. Curcumin, curcumol, curcumadiol, curcumenol, curdione, germacrone, and β-elemene may be the possible Q-markers. Based on the predicted Q-markers, the mechanisms of the liver-protecting and anti-tumor activities of C. kwangsiensis root tubers were analyzed. AKT1, IL6, EGFR, and STAT3 were identified as the key targets, and neuroactive ligand-receptor interaction signaling pathway, nitrogen metabolism pathway, cancer pathway, and hepatitis B pathway were the major involved pathways. This review provides a basis for the quality evaluation and product development of C. kwangsiensis root tubers and gives insights into the research on Chinese medicinal materials.

Identification of curcumin content in raw and vinegar-processed rhizomes of Curcuma kwangsiensis based on electronic nose combined with back propagation neural network / 中国中药杂志

This study aimed to establish a rapid and accurate method for identification of raw and vinegar-processed rhizomes of Curcuma kwangsiensis, in order to predict the content of curcumin compounds for scientific evaluation. A complete set of bionics recognition mode was adopted. The digital odor signal of raw and vinegar-processed rhizomes of Curcuma kwangsiensis were obtained by e-nose, and analyzed by back propagation(BP) neural network algorithm, with the accuracy, the sensitivity and specificity in discriminant model, correlation coefficient as well as the mean square error in regression model as the evaluation indexes. The experimental results showed that the three indexes of the e-nose signal discrimination model established by the neural network algorithm were 100% in training set, correction set and prediction set, which were obviously better than the traditional decision tree, naive bayes, support vector machine, K nearest neighbor and boost classification, and could accurately differentiate the raw and vinegar products. Correlation coefficient and mean square error of the regression model in prediction set were 0.974 8 and 0.117 5 respectively, and could well predict curcumin compounds content in Curcuma kwangsiensis, and demonstrate the superiority of the simulation biometrics model in the analysis of traditional Chinese medicine. By BP neural network algorithm, e-nose odor fingerprint could quickly, conveniently and accurately realize the discrimination and regression, which suggested that more bionics information acquisition and identification patterns could be combined in the field of traditional Chinese medicine, so as to provide ideas and methods for the rapid evaluation and stan-dardization of the quality of traditional Chinese medicine.

Application of Bioaccessibility in Health Risk Assessment of Cd in Traditional Chinese Medicines / 中国药学杂志

OBJECTIVE: To investigate and apply the bioaccessibility of Cd in traditional Chinese medicines (TCMs) to human health risk assessment, and provide reference for the formulation of limit standards. METHODS: The contents of Cd in Coptis chinensis Franch., Ligusticum chuanxiong Hort., Lindera aggregate (Sims) Kosterm., and Curcuma kwangsiensis S.G. Lee et C.F. Liang were determined by inductively coupled plasma mass spectrometry (ICP-MS). The bioaccessibility of Cd in TCMs was investigated by in vitro physiologically based extraction test(PBET) digestion method. And the target hazard quotient (THQ) was applied to assess the health risks of Cd contents. RESULTS: The bioaccessibility of Cd for Coptis chinensis Franch., Ligusticum chuanxiong Hort., Lindera aggregate (Sims) Kosterm., and Curcuma kwangsiensis S.G. Lee et C.F. Liang was 49.0%, 40.0%, 44.9% and 65.7%, respectively. The results of risk assessment showed that before extraction, THQ values of Cd for Coptis chinensis Franch., Ligusticum chuanxiong Hort., Lindera aggregate (Sims) Kosterm., and Curcuma kwangsiensis S.G. Lee et C.F. Liang were 1.895, 1.045, 1.446 and 1.653, respectively; after extraction, THQ values of Cd for the four types of TCMs were 0.929, 0.418, 0.649 and 1.077, respectively. CONCLUSION: Cd in the four types of TCMs cannot be completely absorbed in the artificial gastrointestinal phase, and the risks of Cd are reduced after extraction. Except THQ for Curcuma kwangsiensis S.G. Lee et C.F. Liang, the THQ values are below the value of 1, indicating very low health risks for the other three types of TCMs after extraction. In this study, the bioaccessibility of heavy metals in TCMs is applied to the health risk assessment model in order to provide a scientific basis for objectively evaluating the health risks of heavy metals in TCMs and formulating a scientific and reasonable heavy metal limit standards.

Antithrombotic effects of ethyl acetate fraction of Curcuma kwangsiensis / 中成药

AIM To study the antithrombotic effects and mechanism of ethyl acetate fraction of Curcuma kwangsiensis S.G.Lee et C.F.Liang (CKEAF).METHODS To observe the antithrombotic effects of CKEAF on tail thrombotic mouse models and arteriovenous bypass thrombotic rat models induced by carrageenan,and in vivo thrombosis rat models induced by FeCl3.The serum levels of ET-1,6-keto-PGF1α,TXB2 in rats were measured by enzyme linked immunosorbent assay (ELISA),and the level of NO was determined by nitrate reductase method.Rat models of acute blood stasis were further established for hemorheological study.RESULTS CKEAF significantly decreased the number and length of blackened thrombotic tail of carrageenan-treated mice.Rat models shared significant wet weight loss in arteriovenous bypass thrombosis and in vivo thrombosis,increased levels of NO,6-keto-PGF1α,decreased levels of ET-1,TXB2,and decreased whole blood and plasma viscosity (rats of acute blood stasis model).CONCLUSION Significant antithrombotic effects by CKEAF may contribute to elevated levels of NO,6-keto-PGF1α,and decreased levels of ET-1,TXB2,and lowered whole blood and plasma viscosity.

Screening of High-yield and High-oil Curcuma kwangsiensis / 中国药房

OBJECTIVE:To establish a method for analyzing the volatile oil of high-yield and high-oil Curcuma kwangsiensis, and to provide reference for its breeding. METHODS:GC-MS was performed on the column of HP-5MS quartz elastic capillary column,carrier gas was high purity helium(99.999%),flow rate was 1.0 ml/min,inlet temperature was 250 ℃,the initial tem-perature of column was 50 ℃(temperature programmed),split injection with split ratio of 10:1. Mass spectrometry conditions:ionization mode was the electron impact ion source,ionization energy was 70 eV,the ion source temperature was 230 ℃,the quadrupole temperature was 150 ℃, transmission line temperature was 280 ℃,the electron multiplier voltage was 1588 V,and mass scanning range was m/z 45 to 500. High-yield and high-oil germplasm of were screened from 100 different germplasms,the volatile oil composition of single plant and relative percentage contents of each composition were compared,SPSS 22.0 software was used for cluster analysis. RESULTS:Totally 10 high-yield and high-oil germplasm were screened,54 kinds of compounds were identified,the common compositions of 10 different germplasms were camphor,1-caryophyllene,γ-elemene,curcumene, gemma ketone and new curdione,most germplasms contained borneol,isoborneol,δ-elemene,germacrene and calamine. The C78,C104,purpose 2,volatile oil content and relative percentage contents of active compositions in volatile oil were high. The 10 high-yield and high-oil germplasms can be divided into 3 groups. CONCLUSIONS:The study basically clears the main chemicalcomposition of volatile oil of high-yield and high-oil C. kwangsiensis,C78,C104 and purpose 2 are the more excellent strains in high-yield and high-oil C. Kwangsiensis germplasm.

Comparison of curcumol contents in essential oil from four species of rhizoma Curcumae L / 中草药

Object To develop a new method for the determination of curcumol in essential oil from rhizoma Curcumae L.. Methods The contents of curcumol were determined by high performance capillary gas chromatography with sequential increase of temperature on a HEWLETT PACKARD 5890A gas chromatograph. Results The method can be used to determine curcumol with accuracy at a recovery of 101.4% and RSD of 0.40%. Conclusion The present study provided a satisfactory method for the determination of curcumol, and it was found that its contents in four different species (C. wenyujin, C. longa, C. aeruginose, and C. kwangsiensis) were markedly different.