High-performance Liquid Chromatography Fingerprint Research Articles

Study on anticoagulant material basis and mechanism of Trichosanthis Semen and its shell and kernel based on spectrum-effect relationship integrated molecular docking

This study explored the anticoagulant material basis and mechanism of Trichosanthis Semen and its shell and kernel based on spectrum-effect relationship-integrated molecular docking. High performance liquid chromatography(HPLC) fingerprints of Trichosanthis Semen and its shell and kernel were established. Prothrombin time(PT) and activated partial thromboplastin time(APTT) in mice in the low-and high-dose(5, 30 g·kg~(-1), respectively) Trichosanthis Semen, the shell, and kernel groups were determined as the coagulation markers. The spectrum-effect relationship and anticoagulant material basis of Trichosanthis Semen and its shell and kernel were analyzed with mean value calculation method of Deng's correlation degree(MATLAB) and the common effective component cluster was obtained. Then the common targets of the component cluster and coagulation were retrieved from TCMSP, Swiss-TargetPrediction, GenCLiP3, GeneCards, and DAVID, followed by Gene Ontology(GO) term enrichment and Kyoto Encyclopedia of Genes and Genomes(KEGG) pathway enrichment of the targets. The main anticoagulant molecular mechanism of the component cluster was verified by SYBYL-X 2.1.1. The spectrum-effect relationship of Trichosanthis Semen and its shell and kernel was in positive correlation with the dosage. The contribution of each component to anticoagulation was not the same, suggesting that the material basis for anticoagulation was different, but they have common effective components(i.e. common material basis), such as adenine(peak 3), uracil(peak 4), hypoxanthine(peak 6), xanthine(peak 9), and adenosine(peak 11). Network pharmacology showed that these components can act on multiple target proteins such as NOS3, KDR, and PTGS2, and exert anticoagulant effect through multiple pathways such as VEGF signaling pathway. They involved the biological functions such as proteolysis, cell component such as cytosol, and molecular functions. The results of molecular docking showed that the binding free energy of these components with NOS3(PDB ID: 1 D0 C), KDR(PDB ID: 5 AMN), and PTGS2(PDB ID: 4 COX) was ≤-5 kJ·mol~(-1), and the docking conformations were stable. Spectrum-effect relationship-integrated molecular docking can be used for the optimization, virtual screening, and verification of complex chemical and biological information of Chinese medicine. Trichosanthis Semen and its shell and kernel have the common material basis for anticoagulation and they exert the anticoagulant through multiple targets and pathways.

Identification of Forsythia suspensa (Thunb.) Vahl in different harvest periods using intelligent sensory technologies, HPLC characteristic fingerprint coupled with chemometrics.

Forsythia suspensa (Thunb.) Vahl (FS), the fruit of Oleaceae plants, as a large part of traditional Chinese medicine, is classified as "Qingqiao (Q)" and "Laoqiao (L)" based on the harvest time. Because the maturation of FS is a gradual process, its accurate identification based on different maturity levels is an important issue. We suggest colorimetric, electronic tongue, and high-performance liquid chromatography (HPLC) characteristic fingerprints to discriminate FS in different harvest periods. First, FS fruits from different harvest times were collected, and then, their colour parameters, E-tongue sensory properties, HPLC characteristic fingerprints, and contents of nominal ingredients were determined. Finally, multivariate statistical analyses, including three-dimensional scatter plots, hierarchical cluster, principal component, linear discriminant, similarity, and partial least squares discriminant analyses were performed. The results demonstrated that the three experimental techniques could effectively discriminate FS based on different harvest times with 100% accuracy. Under the qualitative conditions, nine common peaks were identified in the HPLC fingerprints of 60 samples, among which, six peaks [variable importance in projection (VIP) > 1] could be used as index peaks for qualitative identification. In fact, the contents of quality marker components, including forsythin, phillygenin, rutin and forsythoside A, were significant different (P < 0.001) at different harvest times. Interestingly, the quality markers not only accurately reflected the maturity of FS but also showed close correlations with the colour parameters and sensory E-tongue responses. In our present investigation, bionic technologies, including a colorimeter, E-tongue analysis, and HPLC characteristic fingerprints, combined with chemometrics, were employed to develop a novel and accurate method for discriminating FS based on different harvest times.

Phenolic compounds and antioxidant activity of Achillea arabica populations

In this study, we aimed to present the screening of the contents of phenolics including caffeoylquinic acid derivatives, quercetin, luteolin, apigenin and some their derivatives as well as santin and total antioxidant activity for a total of 53 populations of Achillea arabica Kotschy from different parts of Turkey. The flowering plant material was evaluated for phenolic compound contents by using High Performance Liquid Chromatography (HPLC-PDA) fingerprint analysis. The antioxidant activity of plant extracts was evaluated by free radical scavenging (ABTS) and ferric reducing antioxidant power (FRAP) assays. Phenolic contents and antioxidant activity varied remarkably across populations and a significant correlation was found between particular phenolics content and antioxidant activity, suggesting that phenolic metabolites can be regarded as main contributors to the observed antioxidant capacity. The data are valuable in selecting of germplasms, whose plant material may be important in the development of new bioproducts and present A. arabica as a convenient and readily accessible source of natural antioxidants that can be incorporated in food and pharmaceutical applications.

Total Polyphenol Content in Food Samples and Nutraceuticals: Antioxidant Indices versus High Performance Liquid Chromatography.

Total polyphenol content and antioxidant capacity were estimated in various food and nutraceutical samples, including cranberries, raspberries, artichokes, grapevines, green tea, coffee, turmeric, and other medicinal plant extracts. Samples were analyzed by using two antioxidant assays—ferric reducing antioxidant power (FRAP) and Folin–Ciocalteu (FC)—and a reversed-phase high-performance liquid chromatography (HPLC), with a focus on providing compositional fingerprints dealing with polyphenolic compounds. A preliminary data exploration via principal component analysis (PCA) revealed that HPLC fingerprints were suitable chemical descriptors to classify the analyzed samples according to their nature. Moreover, chromatographic data were correlated with antioxidant data using partial least squares (PLS) regression. Regression models have shown good prediction capacities in estimating the antioxidant activity from chromatographic data, with determination coefficients (R2) of 0.971 and 0.983 for FRAP and FC assays, respectively.

Qualitative and quantitative analysis of Alpiniae Oxyphyllae Fructus by high-performance liquid chromatography coupled to Fourier transform-ion cyclotron resonance mass spectrometry.

Alpiniae Oxyphyllae Fructus, as a homology of medicine and food, has been widely used in China for thousands of years. However, the existing qualitative and quantitative methods are difficult to evaluate the quality of Alpiniae Oxyphyllae Fructus samples from multiple sources. In this paper, an high-performance liquid chromatography fingerprint was established for assessing the quality of Alpiniae Oxyphyllae Fructus from different areas. Then, high-performance liquid chromatography was coupled to Fourier transform-ion cyclotron resonance mass spectrometry for characterization of the chemical compositions in Alpiniae Oxyphyllae Fructus. In fingerprint analysis, 54 common peaks were confirmed and six chromatographic peaks of them were identified. The similarity of 14 samples from different areas was between 0.990 and 1.000. Moreover, a total of 30 chemical components were characterized by high-performance liquid chromatography coupled to Fourier transform-ion cyclotron resonance mass spectrometry method, six compounds of which were decisively identified. Finally, the content of nootkatone was determined by high-performance liquid chromatography. In conclusion, the methods used in this study are efficient for qualitative and quantitative analysis of Alpiniae Oxyphyllae Fructus. Also, these methods can be used to control the quality of other traditional Chinese medicines.

Quality Evaluation of Saposhnikovia divaricata (Turcz.) Schischk from Different Origins Based on HPLC Fingerprint and Chemometrics

A valid and encyclopedic evaluation method for assessing the quality of Saposhnikovia divaricata has been set up based on the analysis of a high-performance liquid chromatography (HPLC) fingerprint combined with the cluster analysis (CA), principal component analysis (PCA), partial least square discriminant analysis (PLS-DA), and similarity analysis. 15 peaks of the common model were obtained and used for the similarity analysis, CA analysis, PCA analysis, and PLS-DA analysis. The fingerprint of S. divaricata was established, and 15 common peaks were calibrated. The four common peaks were identified as prim-o-glucosylcimifugin, 4-O-β-D-glucosyl-5-O-methylvisamminol, cimifugin, and sec-o-glucosylhamaudol by comparison with the reference substance. The similarity of the fingerprints of the 33 batches of S. divaricata is above 0.9. Cluster analysis divides the 33 batches of S. divaricata into 2 categories. Principal component analysis (PCA) roughly divides them into 4 categories. Partial least squares method-discriminant analysis (PLS-DA) screened to obtain 2 differential markers, the different components were designated by the reference substance as 4-O-β-D-glucosyl-5-O-methylvisamminol and cimifugin. The fingerprint established by this study combined with chemometrics analysis is reasonable, effective, accurate, and simple, which makes the information more comprehensive and can provide a scientific basis and reference for quality control and quality evaluation of S. divaricata.

Compound traditional Chinese medicine dermatitis ointment ameliorates inflammatory responses and dysregulation of itch-related molecules in atopic dermatitis

BackgroundAtopic dermatitis (AD) is a chronic inflammatory skin disease accompanied with itchy and scaly rash. Compound traditional Chinese medicine dermatitis ointment (CTCMDO) consists of a mixture of extracts from five plants, which had been used in AD treatment due to good anti-inflammatory and anti-allergic effects.Materials and methodsIn this study, high-performance liquid chromatography (HPLC) and liquid chromatography/mass spectrometer (LC/MS) were performed to analyze the active ingredients of CTCMDO in detail and to establish its HPLC fingerprint. Furthermore, the anti-inflammatory and antipruritic activities of CTCMDO were studied in the treatment of DNCB-induced AD in mice.ResultsA total of 44 compounds including phenylpropionic acid compounds, alkaloid compounds, curcumin compounds and lignans were identified via combined HPLC and LC/MS. A fingerprint with 17 common peaks was established. In AD-like mice, DNCB-induced scratching behavior had been suppressed in the treatment of CTCMDO in a dose-dependent manner. Furthermore, the detailed experimental results indicated that the AD can be effectively improved via inhibiting the production of Th1/2 cytokines in serum, reversing the upregulation of substance P levels of itch-related genes in the skin, and suppressing the phosphorylation of JNK, ERK, and p38 in the skin.ConclusionThis work indicated that CTCMDO can significantly improve AD via attenuating the pathological alterations of Th1/2 cytokines and itch-related mediators, as well as inhibiting the phosphorylation of mitogen-activated protein kinase (MAPK) and nuclear factor-kappa B (NF-κB).

High-performance liquid chromatography fingerprint of marine traditional Chinese medicine haliotidis

Objective: Haliotidis, the dried muscle of abalone, has long been used as a marine traditional Chinese medicine (TCM) due to its high medicinal and nutritive values, whereas few reports contributed to its quality control. This study aimed to establish the high-performance liquid chromatography (HPLC) fingerprints of Haliotidis. Materials and Methods: The HPLC fingerprints of Haliotidis, the manufacturing products of dried muscle of abalone, were analyzed by reverse-phase HPLC, using a YMC HPLC C18 column (250 mm × 4.6 mm, 5 μm). The gradient elution mode was applied with mobile phase starting from 5% acetonitrile and 0.1% phosphoric acid aqueous solution to 100% acetonitrile in 70 min at a flow rate of 1.0 mL/min. The detection wavelength was set at 190 nm. Results: Through compared the HPLC fingerprint chromatograms of 14 batches of Haliotidis, 25 peaks were assigned as the characteristic common peaks, of which one index component L-phenylalanine was identified by comparison with its standard substance. The established HPLC fingerprint analysis method of Haliotidis was validated with good precision, repeatability, and stability. Based on the above study, a reference HPLC fingerprint chromatogram of Haliotidis was proposed. Conclusions: It is the first time to establish the HPLC fingerprint chromatogram of TCM Haliotidis, which could contribute to the establishment of its quality control system.

Identification of Cordyceps cicadae and Tolypocladium dujiaolongae based on ITS sequences and chemical pattern recognition method

Based on ITS sequences, the molecular identification of Cordyceps cicadae and Tolypocladium dujiaolongae was carried out, and high-performance liquid chromatography(HPLC) fingerprint combined with chemical pattern recognition method was established to differentiate C. cicadae from its adulterant T. dujiaolongae. The genomic DNA from 10 batches of C. cicadae and five batches of T. dujiaolongae was extracted, and ITS sequences were amplified by PCR and sequenced. The stable differential sites of these two species were compared and the phylogenetic tree was constructed via MEGA 7.0. HPLC was used to establish the fingerprints of C. cicadae and T. dujiaolongae, and similarity evaluation, cluster analysis(CA), principal component analysis(PCA), and partial least squares discriminant analysis(PLS-DA) were applied to investigate the chemical pattern recognition. The result showed that the sources of these two species were different, and there were 115 stable differential sites in ITS sequences of C. cicadae and T. dujiao-longae. The phylogenetic tree could distinguish them effectively. HPLC fingerprints of 18 batches of C. cicadae and 5 batches of T. dujiaolongae were established. The results of CA, PCA, and PLS-DA were consistent, which could distinguish them well, indicating that there were great differences in chemical components between C. cicadae and T. dujiaolongae. The results of PLS-DA showed that six components such as uridine, guanosine, adenosine, and N~6-(2-hydroxyethyl) adenosine were the main differential markers of the two species. ITS sequences and HPLC fingerprint combined with the chemical pattern recognition method can serve as the identification and differentiation methods for C. cicadae and T. dujiaolongae.

Phytochemical characterization, and antioxidant and antibacterial activities of the hydroethanolic extract of Anadenanthera peregrina stem bark.

The Brazilian Cerrado biome consists of a great variety of endemic species with several bioactive compounds, and Anadenanthera peregrina (L.) Speg is a promising species. In this study, we aimed to perform phytochemical characterization and evaluate the antioxidant and antibacterial activities against Staphylococcus aureus and Escherichia coli of the hydroethanolic extract of A. peregrina stem bark. The barks were collected in the Botanical Garden of Goiânia, Brazil. The hydroethanolic extract was obtained by percolation and subjected to physicochemical screening, total phenolic content estimation, high-performance liquid chromatography (HPLC) fingerprinting, and antioxidant (IC50 values were calculated for the 2,2-diphenyl-1-picrylhydrazyl assay - DPPH) and antibacterial activity determination. The pH of the extract was 5.21 and density was 0.956 g/cm3. The phytochemical screening indicated the presence of cardiac glycosides, organic acids, reducing sugars, hemolytic saponins, phenols, coumarins, condensed tannins, flavonoids, catechins, depsides, and depsidones derived from benzoquinones. The extract showed intense hemolytic activity. The total phenolic content was 6.40 g GAE 100 g-1. The HPLC fingerprinting analysis revealed the presence of gallic acid, catechin, and epicatechin. We confirmed the antioxidant activity of the extract. Furthermore, the extract did not inhibit the growth of E. coli colonies at any volume tested, but there were halos around S. aureus colonies at all three volumes tested. These results contribute to a better understanding of the chemical composition of A. peregrina stem bark and further support the medicinal applications of this species.

Assessing the Quality of Calyx of Physalis alkekengi L. var. franchetii Based on Quantitative Analysis of Q-Marker Combined with Chemometrics and Machine Learning Algorithms

Physalis alkekengi L. var. franchetii (PALF) is a traditional Chinese medicine, which is well known for its antimicrobial, anti-inflammatory, antipyretic, and expectorant properties. Its fruits and fruiting calyxes are used as dietary supplements and traditional herbs in China. However, the quality of calyxes is uneven, and it is prone to getting moldy or moth-eaten during storage. High-performance liquid chromatography (HPLC) fingerprints and multivariate chemometric methods were combined to evaluate quality, and three representative compounds were chosen as the quality markers (Q-markers). Hierarchical cluster analysis (HCA) and principal component analysis (PCA) provided a clear discrimination of PALF samples. Through further verification by partial least squares discriminant analysis (PLS-DA), backpropagation artificial neural network (BP-ANN), machine learning, and combination with the determination of the content, biology, and pharmacology effect judgment, galuteolin, rutin, and physalin O could be used as Q-markers that their contents affect the quality of PALF grade evaluation. A simple method was established to rapidly assess the quality of PALF that is important for its clinical application and storage and provide a reference for evaluating the quality of materials used in Chinese medicine.

Study on Chinese patent medicine based on major component analysis and quality control evaluation: A case study of Jizhi Syrup

Jizhi Syrup (JZS) is a popular Chinese patent medicine (CPM) for the treatment of respiratory diseases in clinical practice, especially acute or chronic bronchitis. JZS is a complex formula composed of 8 kinds of herbs and lack of comprehensive researches on chemical components. To further define its components, ultra-performance liquid chromatography-quadrupole-time of flight-mass spectrometry (UPLC-Q-TOF-MS) and headspace-solid phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS) were utilized to identify and classify the chemical components of JZS. A total of 178 chemical compounds encompassing the 8 herbs of JZS were identified and the chemical components were comprehensively explicit. It made up for the gap that volatile components were not studied in the previous study. Based on this, a new method for the quality control of JZS based on its characteristic components was established by fingerprints, multi-component quantitative analysis and quantity transfer of JZS. A dual-wavelength high-performance liquid chromatography (HPLC) fingerprints were established at 210 nm and 260 nm. Four volatile components (linalool, bornyl acetate, 2-undecanone and α-terpineol) and eight nonvolatile components (ephedrine hydrochloride, protocatechuic acid, 5-caffeoylquinic acid, 4-hydroxybenzoic acid, naringin, neohesperidin, glycyrrhizic acid and praeruptorin A) were quantitated by HS-SPME-GC-MS and HPLC-diode array detection (DAD). Meanwhile, six exclusive nonvolatile components were studied for the quantity transfer of Herbs-Intermediate-CPM and all the transfer rates were between 55.23% and 89.20%. This study is the first comprehensive study of the major components in JZS, and its results can be useful to standardize the quality control and provide a valuable reference for other CPMs.

Acute and sub-acute toxicity assessment of the standardized extract of Sanguisorba minor invivo.

Although Sanguisorba minor has been used as herbal medicine, no study has ever examined its potential toxicity. This study investigated acute and subacute toxicities of S.minor hydroalcoholic extract (SE). In the acute toxicity test, a single oral dose (300, 2,000, and 3,000mg/kg) of SE was given to mice. The oral administration of SE (100, 200, and 400mg/kg for 4weeks) was performed to evaluate subacute toxicity. After the treatments, neurobehavioral, histopathology, hematological, and biochemical parameters were monitored. In vitro cytotoxicity was also assessed. Moreover, high-performance liquid chromatography fingerprint was done for the standardization of SE. The no-observed-adverse-effect level of SE was up to 2,000mg/kg, and the LD50 of the prepared extract was over 3,000mg/kg. The rats exposed to the extract did not show any marked change in their body weight. The extract at used doses did not affect neuromuscular coordination. According to the hematological, biochemical, and histological examinations, no significant treatment-related adverse effect of the extract was observed, even at 400mg/kg. Only 48h exposure to 400μg/mL of SE reduced the viability of PC12cells. The findings revealed that this plant could be well-tolerated, regarded safe, and used as herbal medicine.

Comparative Investigation of the Stems, Leaves, Flowers, and Roots of Centipeda Minima Based on Fingerprinting-Multivariate Classification Techniques.

Centipeda minima (L.) A. Br. et Aschers, known as Ebushicao (EBSC) in Chinese, has long been used in traditional Chinese medicine for dispelling wind, clearing orifices, detoxification, and swelling. Although the traditional use of EBSC involves the whole plant, during harvesting and processing, separation of the stems, leaves, flowers, and roots often occurs. However, there are few studies on its medicinal parts. A strategy combining high-performance liquid chromatography (HPLC) fingerprinting and multivariate classification techniques are here proposed for the comparison of roots, stems, leaves, and flowers of EBSC. The roots, stems, leaves, and flowers of EBSC samples were analyzed and compared based on HPLC fingerprints combined with chemometrics, including hierarchical cluster analysis (HCA), principal component analysis (PCA), partial least-squares discriminant analysis (PLS-DA), and back propagation artificial neural network (BP-ANN). Chemical markers were screened using PLS-DA, and the contents of representative ingredients were determined by an HPLC method. The HCA and PCA provided clear discrimination of roots, stems, leaves, and flowers. Moreover, the PLS-DA model and BP-ANN were established to verify the classification results and showed a greater ability to predict new samples. Four representative chemical markers were screened out, and the content of these markers in flowers and leaves was higher than that in stems and roots, and the difference was significant. Combining HPLC fingerprinting and multicomponent chemical pattern recognition technology can be used to distinguish different parts of EBSC. The results indicated that brevilin A, quercetin, rutin, and chlorogenic acid, the important active components of EBSC, were mainly present in the leaves and flowers. This is of great significance for the differentiation and identification of the different medicinal parts of EBSC, as well as for the effectiveness of drug usage in clinical practice. HP LC was used to quickly obtain chemical for fingerprint analysis. HCA, P CA, P LS-DA were used to visualize the discrimination of roots, stems, leaves and flowers of EBSC. P LS-DA model was established to verify the classification results and obtained the chemical marker. BP-ANN model was used to further improve the discrimination accuracy.

Quality Evaluation of Atractylodis Macrocephalae Rhizoma Based on Combinative Method of HPLC Fingerprint, Quantitative Analysis of Multi-Components and Chemical Pattern Recognition Analysis.

A method for the quality evaluation of Atractylodis Macrocephalae Rhizoma (AMR) based on high-performance liquid chromatography (HPLC) fingerprint, HPLC quantification, and chemical pattern recognition analysis was developed and validated. The fingerprint similarity of the 27 batches of AMR samples was 0.887–0.999, which indicates there was very limited variance between the batches. The 27 batches of samples were divided into two categories according to cluster analysis (CA) and principal component analysis (PCA). A total of six differential components of AMR were identified in the partial least-squares discriminant analysis (PLS-DA), among which atractylenolide I, II, III, and atractylone counted 0.003–0.045%, 0.006–0.023%, 0.001–0.058%, and 0.307–1.175%, respectively. The results indicate that the quality evaluation method could be used for quality control and authentication of AMR.

Studies on chemical constituents of Flos Puerariae-Semen Hoveniae medicine pair by HPLC and Fourier transform ion cyclotron resonance mass spectrometry.

Alcoholic liver disease is currently the most clinically concerning liver disease, which occurs from chronic alcohol abuse. Flos Puerariae and Semen Hoveniae have been used to treat alcohol drinking excessively for thousands of years in China. In this study, the ethanol extract of the medicine pair was qualitatively and quantitatively analyzed by high-performance liquid chromatography and Fourier transform ion cyclotron resonance mass spectrometry. First, the high-performance liquid chromatography fingerprint was established to obtain the overall chromatographic data of its chemical constituents. Next, high-performance liquid chromatography-mass spectrometry was applied to identify its chemical constituents. Then, the characteristic constituents were simultaneously quantified by high-performance liquid chromatography. In addition, the chemical constituents that were absorbed into rat plasma were identified by high-performance liquid chromatography-mass spectrometry. As a result, a total of 48 chemical constituents in the medicine pair were detected and identified in vitro. Meanwhile, the content of seven representative constituents, including dihydromyricetin, glycitin, genistin, tectoridin, glycitein, genistein, and tectorigenin were simultaneously determined. Furthermore, a total of 19 chemical constituents were detected in rat plasma after oral administration. In short, the chemical constituents of the medicine pair were initially investigated in this study, which will lay the foundation for the discovery of its pharmacodynamic substances in further works.

Underlying Mechanism and Active Ingredients of Tianma Gouteng Acting on Cerebral Infarction as Determined via Network Pharmacology Analysis Combined With Experimental Validation.

Cerebral infarction (CI), a common cerebrovascular disease worldwide, is caused by unknown factors common to many diseases, including hypokalemia, respiratory diseases, and lower extremity venous thrombosis. Tianma Gouteng (TMGT), a traditional Chinese Medicine (TCM) prescription, has been used for the clinical treatment of CI. In this study, high-performance liquid chromatography (HPLC) fingerprint analysis was used to detect and identify major chemical constituents of TMGT. TCMSP and BATMAN-TCM databases were used to screen for active TMGT constituent compounds, while the GeneCards database was used to screen for protein targets associated with CI. Next, GO and KEGG enrichment analysis of these core nodes were performed to determine the identities of key associated biological processes and signal pathways. Meanwhile, a total of six possible gene targets of TMGT, including NFKBIA, PPARG, IL6, IL1B, CXCL8, and HIF1A, were selected for further study using two cellular models of CI. For one model, PC12 cells were treated under oxygen and glucose deprivation (OGD) conditions to generate an OGD cellular model of CI, while for the other model, BV2 cells were stimulated with lipopolysaccharide (LPS) to generate a cellular model of CI-associated inflammation. Ultimately TMGT treatment increased PPARγ expression and downregulated the expression of p-P65, p-IκBα, and HIF-1α in both OGD-induced and LPS-induced cell models of CI. In addition, molecular docking analysis showed that one TMGT chemical constituent, quercetin, may be a bioactive TMGT compound with activity that may be associated with the alleviation of neuronal damage and neuroinflammation triggered by CI. Moreover, additional data obtained in this work revealed that TMGT could inhibit neuroinflammation and protect brain cells from OGD-induced and LPS-induced damage by altering HIF-1α/PPARγ/NF-κB pathway functions. Thus, targeting this pathway through TMGT administration to CI patients may be a strategy for alleviating nerve injury and neuroinflammation triggered by CI.

Hepatoprotective Constituents of Total Dibenzocyclooctadiene Lignans from Schisandra chinensis Based on the Spectrum-Effect Relationship.

To scientifically clarify the hepatoprotective constituents of Fructus Schizandrae chinensis, eleven batches samples of total dibenzocyclooctadiene lignans (TDL) from Schisandra chinensis were prepared by using the optimum extraction technique. Characteristic high-performance liquid chromatography (HPLC) chromatograms were obtained through HPLC analysis technology, and the hepatoprotective effects of the eleven batches of TDL were evaluated by MTT assay. Based on the chemical and biological activity results, the spectrum-effect relationship between the characteristic HPLC fingerprints and the hepatoprotective effect of TDL was established using Minitab 16.0 data analysis software. On the basis of the spectrum-effect relationship, thirteen compounds (1–13) were obtained from the TDL by chemical natural product chemical separation and purification technology, and their structures were identified on the basis of the spectral data and the literature. Based on these compounds, thirteen common peaks among the thirty-three chromatographic peaks in the above HPLC fingerprints were identified. Our findings showed that some components, including, schisandrin B (2), schisandrin A (3), and schisandrol B (7) had significant roles in promoting hepatoprotective activity. Preliminary verification of the spectrum-effect relationship of TDL from S. chinensis was carried out, and the results confirmed that the activity of a composite of these three key components in optimal ratios was better than that of any individual compound, which potentially confirmed the reliability of the spectrum-effect relationship and the synergistic effects of traditional Chinese medicine.

Fingerprint combining with quantitative analysis of multi-components by single marker for quality control of Chenxiang Huaqi tablets.

Chenxiang Huaqi tablets (CXHQTs) are a traditional Chinese medicine (TCM) commonly used to treat stomach-related diseases. Currently, the ministerial standards do not provide detailed guidance and regulations on the content determination of CXHQTs, and the reported studies only use individual active components as indicators for determining effective ingredients. The present study aimed to propose a methodology for quality control of CXHQTs based on high-performance liquid chromatography (HPLC) fingerprinting combined with the quantitative analysis of multi-components by single marker (QAMS) method. HPLC method was used to determine seven active ingredients and performed fingerprint analysis of CXHQTs. To further process chemometric assessment, technical analysis-model including similarity analysis (SA), hierarchical clustering analysis (HCA), principal components analysis (PCA) and orthogonal partial least squares discrimination analysis (OPLS-DA) was set up to differentiate and classify the 20 batches of samples. After comparing the results of QAMS method with the external standard method (ESM), we found there is no significant difference. Besides, the fingerprint of CXHQT was also established. HPLC fingerprint combined with the QAMS could be an efficient and selective analysis technique to achieve a qualitative and quantitative evaluation of executing quality processes.

Quality evaluation of Sinopodophyllum hexandrum (Royle) Ying based on active compounds, bioactivities and RP-HPLC fingerprint

Sinopodophyllum hexandrum (Royle) Ying is a perennial medicinal plant that produces the anti-cancer lignan compositions especially podophyllotoxin. Since podophyllotoxin commercial production via chemical synthesis, biotechnological intervention or cultivation has yet to meet the increasing demand, mining the potentially available plant organs to discover more natural podophyllotoxin sources is essential. This study investigated the reversed-phase high performance liquid chromatography (RP-HPLC) fingerprint, active chemicals (lignans, flavonoids, and phenolic profiles), and bioactivities (antimicrobial and cytotoxic activities) of distinct S. hexandrum plant organs. Among different plant organs, the rhizome is a preponderant organ due to high active compounds especially podophyllotoxin at 71.615☓103 μg/mL, high bioactivity with low minimum inhibitory concentration (MIC)/minimal bactericidal concentration (MBC)/minimal fungicidal concentration (MFC) value of 5/5/5 mg/mL, and low CIR50 value of 0.0718 μg/mL, followed by root. Chemometrics analysis techniques, including correlation analysis (CA), similarity analysis (SA), hierarchical cluster analysis (HCA), principal component analysis (PCA), and discriminant analysis (DA), were further employed to facilitate accurate quality assessment of different plant organs from S. hexandrum. The findings unambiguously validated the clustering of seven samples into four major groups (G1–G4), with G1 (rhizome)>G2 (root)>G4 (fruit, blossom, and leaf)>G3 (stem and petiole) as the consistent quality ordering, despite significant differences in chemical compositions and bioactivities. Considered the practical application, the rhizome is, therefore, a preferred medicinal organ, and root could be considered as a substitute resource. The rhizome or root extraction could be used as a potential raw material source for natural antimicrobial agents and cancer cell inhibitors in the food, medicine, and healthcare industries. This research added to our understanding of the integrated exploitation and utilization extension of S. hexandrum resources. RP-HPLC fingerprinting in combination with chemometrics approaches was also confirmed as a highly reliable method for assessing the quality of S. hexandrum and other industrial crops.