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2.
Braz. J. Pharm. Sci. (Online) ; 58: e19562, 2022. tab, graf
Article in English | LILACS | ID: biblio-1394045

ABSTRACT

Abstract This study aimed to evaluate the antioxidant potential of the Coffea arabica Lineu (L.) leaf extract and its effects on platelet aggregation of dyslipidemic rats. The extract was obtained by the percolation of C. arabica L. leaves in hydroethanolic solution 70% (v/v). The mass spectrometry FIA-ESI-MS² suggested the presence of chlorogenic acid, rutin acid, and quinic acid. The DPPH• radicals scavenging capacity was demonstrated (IC50 = 0.06 mg/mL). The extract was administered to rats by gavage (300 mg/kg/day) for 56 days. Dyslipidemia was induced by administering Triton WR-1339 (300 mg/kg body weight) on the 54th day. On day 56, blood was collected by puncturing the abdominal aorta artery and the aortic artery was removed. Lipid profile, markers of renal and hepatic injury, lipid peroxidation, and platelet aggregation tests were carried out. The ingestion of extract reduced the lipid peroxidation (aorta and plasma) and platelet aggregation in dyslipidemic rats. The extract did not affect markers of renal and hepatic function as analyzed in this study, suggesting neither impaired liver nor kidney function in these animals. Therefore, our results demonstrate that the extract of leaves of C. arabica L. show antioxidant potential in vitro and in vivo as well as anti-platelet aggregation in dyslipidemic animals


Subject(s)
Animals , Male , Female , Rats , Plant Extracts/analysis , Plant Leaves/classification , Coffea/adverse effects , Dyslipidemias/drug therapy , Mass Spectrometry/methods , Blood Platelets/classification , Platelet Aggregation , Antioxidants/administration & dosage
3.
J. venom. anim. toxins incl. trop. dis ; 28: e20210042, 2022. graf, ilus
Article in English | LILACS, VETINDEX | ID: biblio-1360568

ABSTRACT

Spider venoms induce different physio-pharmacological effects by binding with high affinity on molecular targets, therefore being of biotechnological interest. Some of these toxins, acting on different types of ion channels, have been identified in the venom of spiders of the genus Phoneutria, mainly from P. nigriventer. In spite of the pharmaceutical potential demonstrated by P. nigriventer toxins, there is limited information on molecules from venoms of the same genus, as their toxins remain poorly characterized. Understanding this diversity and clarifying the differences in the mechanisms of action of spider toxins is of great importance for establishing their true biotechnological potential. This prompted us to compare three different venoms of the Phoneutria genus: P. nigriventer (Pn-V), P. eickstedtae (Pe-V) and P. pertyi (Pp-V). Methods: Biochemical and functional comparison of the venoms were carried out by SDS-PAGE, HPLC, mass spectrometry, enzymatic activities and electrophysiological assays (whole-cell patch clamp). Results: The employed approach revealed that all three venoms had an overall similarity in their components, with only minor differences. The presence of a high number of similar proteins was evident, particularly toxins in the mass range of ~6.0 kDa. Hyaluronidase and proteolytic activities were detected in all venoms, in addition to isoforms of the toxins Tx1 and Tx2-6. All Tx1 isoforms blocked Nav1.6 ion currents, with slight differences. Conclusion: Our findings showed that Pn-V, Pe-V and Pp-V are highly similar concerning protein composition and enzymatic activities, containing isoforms of the same toxins sharing high sequence homology, with minor modifications. However, these structural and functional variations are very important for venom diversity. In addition, our findings will contribute to the comprehension of the molecular diversity of the venoms of the other species from Phoneutria genus, exposing their biotechnological potential as a source for searching for new active molecules.(AU)


Subject(s)
Animals , Mass Spectrometry/instrumentation , Spider Venoms/analysis , Spiders , Protein Isoforms/biosynthesis , Hyaluronoglucosaminidase , Pharmaceutical Preparations
4.
Article in English | WPRIM | ID: wpr-928921

ABSTRACT

OBJECTIVE@#To study the differences between the serum metabolites in patients with adenomatous polyps of the colon and yang-deficiency constitution and those without colon polyps and with balanced constitution, and look for biomarkers that can be used to distinguish between the two groups.@*METHODS@#General patient information was gathered, and Chinese medicine constitution were collected in 940 patients who underwent electronic colonoscopy. A total of 119 patients with adenomatous polyps of the colon and yang-deficiency constitution were included in the experimental group, and 150 patients without colon polyps and with balanced constitution were included in the control group. Metabolomics analysis was performed on the fasting venous blood obtained from each patient in both groups. Principal component analysis and orthogonal partial least squares discriminant analysis were performed on the detection results, potential biomarkers were screened, metabolic pathway changes were determined, and the metabolic processes involved were discussed.@*RESULTS@#A total of 59 differential biomarkers between the experimental group and the control group were identified. The differential metabolites were found mainly in the glycerophospholipid metabolism pathway, and the bile acid 3-oxo-4,6-choladienoic acid was the biomarker that distinguished the experimental group from the control group.@*CONCLUSION@#With the help of metabolomics analysis, the differential metabolites in patients with adenomatous polyps of the colon and yang-deficiency constitution and those in patients without colon polyps and with balanced constitution could be identified. The biomarker 3-oxo-4,6-choladienoic acid may have potential diagnostic value in patients with adenomatous polyp of the colon and yang-deficiency constitution. (Trial Registration No. NCT02986308).


Subject(s)
Adenomatous Polyps , Biomarkers , Chromatography, Liquid , Colon , Humans , Mass Spectrometry , Yang Deficiency
5.
Article in English | WPRIM | ID: wpr-928843

ABSTRACT

BACKGROUND@#Pyrethroid (PYR) insecticides are widely used for controlling various pests. There are two types that differ in terms of usage: agricultural-purpose PYR (agriculture-PYR) and hygiene purpose PYR (hygiene-PYRs). Few studies exist on the exposure to these chemicals in small children. In this study, we conducted biomonitoring of urinary pyrethroid metabolites in 1.5-year-old children throughout the year.@*METHODS@#Study subjects were 1075 children participating in an Aichi regional sub-cohort of the Japan Environment and Children's Study as of 18-month health check-up. The concentrations of four specific hygiene-PYR metabolites including 2,3,5,6-tetrafluoro-1,4-benzenedimethanol (HOCH2-FB-Al), and five common metabolites of hygiene- and agriculture-PYRs including 3-phenoxybenzoic acid (3PBA) and cis- and trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropane-1-carboxylic acid (DCCA), were measured in urine samples extracted from soiled diapers using a triple quadrupole gas chromatograph-mass spectrometer.@*RESULTS@#The highest detection frequencies were for 3PBA, followed by DCCA, 1R-trans-chrysanthemum dicarboxylic acid, and HOCH2-FB-Al. Among the six metabolites, urinary concentrations were seasonally varied. However, this variation was not observed in the most studied PYR metabolite, 3PBA. Spearman's correlation analysis demonstrated a significant positive correlation between FB-Al and DCCA (r = 0.56) and HOCH2-FB-Al and 4-methoxymethyl-2,3,5,6-tetrafluorobenzyl alcohol (r = 0.60).@*CONCLUSIONS@#This biomonitoring survey found widespread and seasonally specific exposure to multiple hygiene- and agriculture-PYRs in 1.5-year-old Japanese children.


Subject(s)
Agriculture , Child, Preschool , Environmental Exposure/analysis , Humans , Infant , Insecticides , Japan , Mass Spectrometry , Pyrethrins/urine
6.
Ciênc. rural (Online) ; 52(2): e20200894, 2022. ilus, tab, graf
Article in English | LILACS, VETINDEX | ID: biblio-1339655

ABSTRACT

Seed germination is a complex process controlled by many factors, in which physical and biochemical mechanisms are involved and the mobilization of reserves is crucial for this process to occur. Although, seed reserve mobilization is usually thought to be a post-germination process, seed reserve proteins mobilization occurs during germination. This study quantified seed proteins of bean genotypes during different hydration times, in order to understand the process of protein mobilization and whether there is relationship of this biochemical component with seed vigor. This study was conducted using seeds with different levels of vigor, genotypes with highest (13, 42, 55 and 81) and lowest (07, 23, 44, 50, IPR-88-Uirapurú and Iapar 81) physiological quality. High vigor genotypes showed greater efficiency in hydrolysis and mobilization of protein component, because they presented low globulins content in cotyledons at radicle protrusion in relation to low vigor genotypes (07, 23 and 50). The protein alpha-amylase inhibitor, observed in all genotypes, is involved with the longer time needed for radicle protrusion, according to the band intensity difference in genotypes 07, 44 and Iapar 81.


A germinação de sementes é um processo complexo controlado por muitos fatores, nos quais mecanismos físicos e bioquímicos estão envolvidos e a mobilização de reservas é decisiva para que esse processo ocorra. Embora a mobilização de reservas de sementes seja considerada um processo pós-germinativo, a mobilização das proteínas de reserva de sementes ocorre durante a germinação. Este estudo teve como objetivo quantificar as proteínas de sementes de genótipos de feijão durante os diferentes tempos de hidratação, a fim de compreender o processo de mobilização proteica e se há relação desse componente bioquímico com o vigor das sementes. Este estudo foi realizado utilizando sementes com diferentes níveis de vigor, genótipos com maior (13, 42, 55 e 81) e menor (07, 23, 44, 50, IPR-88-Uirapurú e Iapar 81) qualidade fisiológica. Os genótipos de alto vigor apresentaram maior eficiência na hidrólise e mobilização do componente proteico, pois apresentaram baixo teor de globulinas nos cotilédones na protrusão radicular em relação aos genótipos de baixo vigor (07, 23 e 50). A proteína inibidora da alfa-amilase, observada em todos os genótipos, está envolvida com o maior tempo necessário para a protrusão da radícula, de acordo com a diferença de intensidade da banda nos genótipos 07, 44 e Iapar 81.


Subject(s)
Seeds/chemistry , Genetic Variation/genetics , Proteins/analysis , Phaseolus/embryology , Mass Spectrometry , Electrophoresis, Polyacrylamide Gel
7.
J. venom. anim. toxins incl. trop. dis ; 28: e20210116, 2022. tab, graf
Article in English | LILACS, VETINDEX | ID: biblio-1375812

ABSTRACT

Background: Conopeptides from cone snail venom have aroused great interest related to the discovery of novel bioactive candidates, due to their excellent prospects for the treatment of various health problems such as pain, addiction, psychosis and epilepsy. In order to explore novel biopeptides, we investigated the structure and function of five novel conopeptides isolated from the venom of Conus marmoreus from South China Sea. Methods: C. marmoreus crude venom was prepared, fractionated and purified by HPLC system. The primary sequences of the five novel disulfide-poor conopeptides Mr-1 to Mr-5 were identified by comprehensive analysis of de novo MALDI-TOF tandem mass spectrometry and Edman degradation data. In order to investigate their function, these five conopeptides were synthesized by Fmoc-SPPS chemistry, and their biological effects at several heterologous rat nicotinic acetylcholine receptor (nAChR) subtypes (α1β1δε, α3β2, α3β4, α4β2) were determined by electrophysiological technique. Results: Five novel disulfide-poor conopeptides were identified and named as follows: Mr-1 (DWEYHAHPKPNSFWT), Mr-2 (YPTRAYPSNKFG), Mr-3 (NVIQAPAQSVAPP NTST), Mr-4 [KENVLNKLKSK(L/I)] and Mr-5 [NAVAAAN(L/I)PG(L/I)V]. None of them contains a disulfide bond. The sequences of conopeptides Mr-2 to Mr-5 do not belong to any category of the known disulfide-poor conopeptides. No significant activity against the above nAChR subtypes were observed for the five conopeptides at 100 µM. Conclusion: We purified and structurally characterized five novel disulfide-poor conopeptides from C. marmoreus crude venom and first investigated their nAChR inhibitory effects. This work expanded our knowledge on the structure and function of disulfide-poor conopeptides from this cone snail venom.(AU)


Subject(s)
Animals , Conotoxins/isolation & purification , Disulfides/adverse effects , Mollusk Venoms , Mass Spectrometry
8.
J. venom. anim. toxins incl. trop. dis ; 28: e20210047, 2022. tab, graf
Article in English | LILACS, VETINDEX | ID: biblio-1375811

ABSTRACT

Accidents with venomous animals are a public health issue worldwide. Among the species involved in these accidents are scorpions, spiders, bees, wasps, and other members of the phylum Arthropoda. The knowledge of the function of proteins present in these venoms is important to guide diagnosis, therapeutics, besides being a source of a large variety of biotechnological active molecules. Although our understanding about the characteristics and function of arthropod venoms has been evolving in the last decades, a major aspect crucial for the function of these proteins remains poorly studied, the posttranslational modifications (PTMs). Comprehension of such modifications can contribute to better understanding the basis of envenomation, leading to improvements in the specificities of potential therapeutic toxins. Therefore, in this review, we bring to light protein/toxin PTMs in arthropod venoms by accessing the information present in the UniProtKB/Swiss-Prot database, including experimental and putative inferences. Then, we concentrate our discussion on the current knowledge on protein phosphorylation and glycosylation, highlighting the potential functionality of these modifications in arthropod venom. We also briefly describe general approaches to study "PTM-functional-venomics", herein referred to the integration of PTM-venomics with a functional investigation of PTM impact on venom biology. Furthermore, we discuss the bottlenecks in toxinology studies covering PTM investigation. In conclusion, through the mining of PTMs in arthropod venoms, we observed a large gap in this field that limits our understanding on the biology of these venoms, affecting the diagnosis and therapeutics development. Hence, we encourage community efforts to draw attention to a better understanding of PTM in arthropod venom toxins.(AU)


Subject(s)
Animals , Arthropod Venoms/toxicity , Protein Processing, Post-Translational , Phosphorylation , Scorpions , Mass Spectrometry/methods , Spiders , Wasps , Bees , Glycosylation
9.
Article in English | WPRIM | ID: wpr-939920

ABSTRACT

Achyranthes bidentata Blume is widely used as a traditional Chinese medicine with the effects of nourishing the liver and kidneys and strengthening muscles and bones. In this work, a rapid and simple strategy was developed for characterizing phytoecdysteroids by ultra-high-performance liquid chromatography coupled with liner ion trap-Orbitrap mass spectrometry using electrospray ionization in the negative mode. As a result, 47 phytoecdysteroids were unambiguously or tentatively characterized. Among them, seven known compounds were identified according to the reference standards along with molecular formula, retention time and fragmentation patterns, while others were mostly potential new compounds. Through targeted isolation, the structures of three new compounds were determined by NMR spectra, which were consistent with LC-MS characterization. The present study provides an efficient method to deeply characterize phytoecdysteroids.


Subject(s)
Achyranthes/chemistry , Chromatography, High Pressure Liquid/methods , Gas Chromatography-Mass Spectrometry , Mass Spectrometry , Medicine, Chinese Traditional , Spectrometry, Mass, Electrospray Ionization/methods
10.
Chinese Journal of Oncology ; (12): 252-259, 2022.
Article in Chinese | WPRIM | ID: wpr-935208

ABSTRACT

Objective: To investigate the urinary small molecular metabolites and their metabolic characteristics of patients with hepatocellular carcinoma (HCC). Methods: High throughput ultra-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS) was used to detect the small molecular metabolites in urine of healthy control (n=10), patients with hepatic hemangioma (n=10) and patients with HCC (n=10). The orthogonal projections to latent structures-discriminant analysis (OPLS-DA), hierarchical cluster analysis of multivariate analysis and univariate analysis were used to analyze the differential metabolites of the three groups. Results: The metabolic profiles of the three groups showed that the total of 381 differential metabolites were identified and divided into 96 up-regulated metabolites and 285 down-regulated metabolites. There were 55 urinary metabolites specifically related to HCC. Twenty-one of them were significantly up-regulated, including Acetyl-DL-Leucine, Ala Asp, HoPhe-Gly-OH, while 34 were significantly down-regulated, including Selenocystathionine, Met Trp Met Cys, Valsartan acid and so on. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis showed that the differential metabolites were mainly enriched in glutamine/glutamate metabolism, lysine biosynthesis, tricarboxylic acid cycle and purine metabolism. Conclusions: The occurrence of HCC is accompanied by the abnormalities of multiple metabolites and metabolic pathways. The analysis of the characteristic metabolic profile of urine in patients with HCC is helpful to find metabolic markers and potential therapeutic targets for liver cancer.


Subject(s)
Carcinoma, Hepatocellular/metabolism , Chromatography, High Pressure Liquid/methods , Humans , Liver Neoplasms/metabolism , Mass Spectrometry/methods , Metabolomics/methods
11.
Article in Chinese | WPRIM | ID: wpr-928173

ABSTRACT

Based on the previous research results of our group and literature research, the chemical components, mechanisms, pharmacodynamics, and pharmacokinetics of Zingiberis Rhizoma Carbonisata were summarized to determine the quality markers(Q-markers) of Zingiberis Rhizoma Carbonisata and Zingiberis Rhizoma. Our research group has clarified the differential components of Zingiberis Rhizoma Carbonisata and Zingiberis Rhizoma, the meridian-warming hemostatic effect of Zingiberis Rhizoma Carbonisata, the related targets and pathways of the effect, the endogenous biomarkers of Zingiberis Rhizoma Carbonisata, and the hemodynamic processes of Zingiberis Rhizoma Carbonisata and Zingiberis Rhizoma. Moreover, based on high-performance liquid chromatography-diode array detector-electrospray ionization mass spectrometry(HPLC-DAD-ESIMS), a method for determining the content of Q-mar-kers was established. In conclusion, the study finally determined that gingerone, 6-shogaol, and diacetyl-6-gingerol were the Q-mar-kers of Zingiberis Rhizoma Carbonisata decoction pieces, and 6-gingerol, 8-gingerol, and 10-gingerol were Q-markers of Zingiberis Rhizoma decoction pieces. The result is expected to provide a reference for the establishment of quality standards for Zingiberis Rhizoma Carbonisata decoction pieces and Zingiberis Rhizoma decoction pieces.


Subject(s)
Biomarkers/analysis , Chromatography, High Pressure Liquid/methods , Drugs, Chinese Herbal/chemistry , Ginger , Mass Spectrometry , Plant Extracts , Rhizome/chemistry
12.
Article in Chinese | WPRIM | ID: wpr-928152

ABSTRACT

Based on the combination of ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry(UPLC-Q-TOF) and Waters UNIFI software, the chemical constituents of the classic prescription Xiaochengqi Decoction were qualitatively analyzed and identified. The UPLC conditions are as follows: Acquity HSS T3 reverse phase column(2.1 mm ×100 mm, 1.8 μm), column temperature of 30 ℃, mobile phase of 0.1% formic acid aqueous solution(A)-acetonitrile(B), and flow rate of 0.3 mL·min~(-1). High-resolution MS data of Xiaochengqi Decoction were collected in ESI~(+/-) modes by Fast DDA. The structures of the chemical constituents were tentatively characterized or identified by UNIFI software according to the retention time of reference standards and characteristic fragment ions in MS profile, and literature data. A total of 233 components in Xiaochengqi Decoction were identified, with 93 from wine-processed Rhei Radix et Rhizoma, 104 from bran-processed Aurantii Fructus Immaturus, and 36 from ginger-processed Magnoliae Officinalis Cortex. These 233 components included anthraquinones, flavonoids, lignans, alkaloids, coumarins, and phenylethanoid glycosides. The result provided experimental evidence for the further study on establishment of quality standard and product development of the formula.


Subject(s)
Chromatography, High Pressure Liquid/methods , DDT/analogs & derivatives , Drugs, Chinese Herbal/chemistry , Mass Spectrometry , Rhizome/chemistry , Software
13.
Article in Chinese | WPRIM | ID: wpr-928087

ABSTRACT

This study investigated the chemical components from the leaves and stems of Schisandra chinensis. Three norsesquiterpenoids were isolated from S. chinensis by various column chromatographies(silica gel, Sephadex LH-20, and MCI), reversed-phase medium-pressure preparative, and semi-preparative high-performance liquid chromatography(HPLC). Their structures were identified based on physicochemical properties, mass spectrometry(MS), nuclear magnetic resonance(NMR), ultraviolet(UV), and electro-nic circular dichroism(ECD) as(3R,4R,5R,6S,7E)-3,4,5,6-tetrahydroxy-7-megastigmen-9-one(1),(3S,5R,6R,7E)-3,5,6-trihydroxy-7-megastigmen-9-one(2), and(3S,4R,9R)-3,4,9-trihydroxymegastigman-5-ene(3). Compound 1 was a new compound, and its absolute configuration was determined by ECD. Compounds 2 and 3 were isolated from the Schisandra plant for the first time.


Subject(s)
Chromatography, High Pressure Liquid , Magnetic Resonance Spectroscopy , Mass Spectrometry , Plant Leaves/chemistry , Schisandra
14.
Article in Chinese | WPRIM | ID: wpr-928074

ABSTRACT

Lonicera Japonica Flos is the dried bud or nascent flower of Lonicera japonica(Caprifoliaceae). The plant suffers from various diseases and pests in the growth period and thus pesticides are often used. As a result, the resultant pesticide residues in Lonicera Japonica Flos have aroused great concern. This review summarized the investigation, detection methods, content analysis, and risk assessment of pesticide residues in Lonicera Japonica Flos since 1996, and compared the maximum residue limits among different countries and regions. The results showed that the pesticide residues were detected in Lonicera Japonica Flos from different production areas, and only some exceeded the limits. The residual pesticides have changed from organochlorines to new types such as tebuconazole and nitenpyram. The detection method has upgraded from chromatography to chromatography-mass spectrometry. Most pesticide residues will not cause health risks, except carbofuran. Pesticide residues limit the development of Lonicera Japonica Flos industry in China. In practice, we should improve the drug registration of Lonicera Japonica Flos, promote ecological prevention and control technology, and formulate and promote pesticide residue limit standard of Lonicera Japonica Flos.


Subject(s)
Flowers/chemistry , Lonicera/chemistry , Mass Spectrometry , Pesticide Residues/analysis , Pesticides/analysis
15.
Article in Chinese | WPRIM | ID: wpr-928071

ABSTRACT

Panacis Quinquefolii Radix is the dry root of Panax quinquefolium, which is a perennial plant of Araliaceae. The plant has a long growth cycle and serious growth barrier problem, which leads to the use of pesticides. As a result, the pesticide residues in Panacis Quinquefolii Radix are arousing great concern. This paper reviews the research findings on the investigation, detection methods, content analysis and risk assessment of pesticide residues in Panacis Quinquefolii Radix since 1993, and compares the pesticide residue limit standards of different countries and regions. The pesticide residues in Panacis Quinquefolii Radix have been changing from organochlorines with high toxicity to triazines and triazoles with low toxicity. The pesticide residues are generally low, while the pollution of pentachloronitrobenzene and other pesticides still exist. The detection method has evolved from chromatography to chromatography-mass spectrometry. There are no reports of health risks caused by pesticide residues of Panacis Quinquefolii Radix. Pesticide residue is a major factor restricting the sound development of Panacis Quinquefolii Radix industry in China. Therefore, we suggest to improve the registration of pesticides applied to the plant, popularize mature ecological planting mode and supporting technology, and strengthen the research on the risk assessment and limit standard of pesticide residue in Panacis Quinquefolii Radix.


Subject(s)
Drugs, Chinese Herbal/chemistry , Ginsenosides/analysis , Mass Spectrometry , Panax/chemistry , Pesticide Residues/analysis
16.
Article in Chinese | WPRIM | ID: wpr-927988

ABSTRACT

In order to evaluate the composition and distribution characteristics of inorganic elements in Laminaria japonica, this study employed inductively coupled plasma mass spectrometry(ICP-MS) to detect the inorganic elements and used high performance liquid chromatography tandem ICP-MS(HPLC-ICP-MS) to determine the content of different arsenic species in L. japonica from diffe-rent origins. Micro X-ray fluorescence(Micro-XRF) was used to determine micro-area distribution of inorganic elements in L. japonica. The results showed that the average content of Mn, Fe, Sr, and Al was high, and that of As and Cr exceeded the limits of the national food safety standard. According to the results of HPLC-ICP-MS, arsenobetaine(AsB) was the main species of As contained in L. japonica. The more toxic inorganic arsenic accounts for a small proportion, whereas its content was 1-4 times of the limit in the national food safety standard. The results of Micro-XRF showed that As, Pb, Fe, Cu, Mn, and Ni were mainly distributed on the surface of L. japonica. Among them, As and Pb had a clear tendency to diffuse from the surface to the inside. The results of the study can provide a basis for the processing as well as the medicinal and edible safety evaluation of L. japonica.


Subject(s)
Arsenic/analysis , Chromatography, High Pressure Liquid/methods , Laminaria , Mass Spectrometry/methods , Spectrum Analysis , Trace Elements/analysis
17.
Article in Chinese | WPRIM | ID: wpr-927976

ABSTRACT

A UHPLC-Q Exactive Orbitrap MS method was used to analyze the chemical constituents of the classical prescription Qianghuo Shengshi Standard Decoction(QHSS). UHPL conditions were as follows: Waters~(TM) UPLC~(TM) HSS T3 C_(18) column(2.1 mm×100 mm, 1.7 μm) and mobile phase of acetonitrile-0.1% formic acid aqueous solution. Mass spectrometry data of QHSS, each herb extract, and negative sample were collected in both positive and negative ion modes. The chemical constituents of QHSS were identified or tentatively identified based on the accurate molecular weight, retention time, MS fragmentation, comparison with reference substances, and literature reports. A total of 141 compounds were identified, including 18 amino acids, oligosaccharides, oligopeptides, and their derivatives, 19 phenolic acids, 44 coumarins, 18 flavonoids and chromones, 13 saponins, 17 phthalides, and 12 other components. This study comprehensively characterized the chemical constituents of QHSS, laying an experimental basis for the in-depth research on the material basis and quality control of QHSS.


Subject(s)
Chromatography, High Pressure Liquid , Drugs, Chinese Herbal/chemistry , Gas Chromatography-Mass Spectrometry , Mass Spectrometry , Quality Control
18.
Article in Chinese | WPRIM | ID: wpr-927941

ABSTRACT

Chinese medicine processing is a procedure to process medicinal materials under the guidance of traditional Chinese medicine(TCM) theories by using unique methods in China. The medicinal materials can only be used clinically after proper processing. With the development of the modernization of TCM, it is difficult to solve the problems in the inheritance, development, and internationalization of Chinese medicine processing. Metabonomics, a new omics technology developed at the end of the last century, is used to infer the physiological or pathological conditions of the organism with the methods such as NMR and LC-MS via investigating the changes in endogenous small molecule metabolic network after the organism is stimulated by external environment. Metabonomics coincides with the holistic view of TCM because it displays the characteristics of integrity, comprehensiveness, and dynamics, and it has been widely applied in the field of Chinese medicine processing in recent years. This study summarized the application of metabonomics in the processing mechanism and quality control of Chinese medicine processing and prospected the development of this technology in the field of Chinese medicine processing.


Subject(s)
Chromatography, Liquid , Drugs, Chinese Herbal , Mass Spectrometry , Medicine, Chinese Traditional , Metabolomics/methods , Quality Control
19.
Article in Chinese | WPRIM | ID: wpr-927935

ABSTRACT

Quality is the guarantee for the clinical safety and effectiveness of Chinese medicine. Accurate quality evaluation is the key to the standardization and modernization of Chinese medicine. Efforts have been made in improving Chinese medicine quality and strengthening the quality and safety supervision in China, but rapid and accurate quality evaluation of complex Chinese medicine samples is still a challenge. On the basis of the development of ambient mass spectrometry and the application in quality evaluation of complex Chinese medicine systems in recent years, the authors developed the multi-scenario Chinese medicine quality evaluation strategies. A systematic methodology was proposed in specific areas such as real-time monitoring of the quality of complex Chinese medicine decoction system, rapid toxicity grading of compound Chinese patent medicine, and evaluation of bulk medicinals of Chinese patent medicine. Allowing multi-scenario analysis of Chinese medicine, it is expected to provide universal research ideas and technical methods for rapid and accurate quality evaluation of Chinese medicine and boost the high-quality development of Chinese medicine industry.


Subject(s)
China , Drugs, Chinese Herbal , Mass Spectrometry , Medicine, Chinese Traditional , Nonprescription Drugs , Reference Standards
20.
Article in Chinese | WPRIM | ID: wpr-927917

ABSTRACT

The present study investigated the chemical constituents of Scrophulariae Radix and their antitumor activities in vitro. The compounds in the ethyl acetate extract were separated and purified by conventional column chromatographies(such as silica gel, Sephadex LH-20, and ODS column) and semi-preparative high-performance liquid chromatography(HPLC), and their structures were identified by various spectral techniques such as nuclear magnetic resonance(NMR) and mass spectrometry(MS). Twenty-three compounds were isolated and identified as benzyl-β-D-(3',6'-di-O-acetyl) glucoside(1), 5-O-p-methoxybenzoyl kojic acid(2), 5-O-methoxybenzoyl kojic acid(3), 7-O-methylbenzoyl kojic acid(4), 5-O-benzoyl kojic acid(5), methyl ferulate ethyl ether(6), trans-ferulic acid(7), trans-isoferulic acid(8), trans-caffeic acid(9), trans-caffeic acid methyl ester(10), caffeic acid ethyl ester(11), trans-cinnamic acid(12), trans-p-methoxycinnamic acid(13), trans-p-hydroxycinnamic acid(14), trans-p-hydroxycinnamic acid methyl ester(15), 2-(3,4-dihydroxyphenethyl) alcohol(16),(p-hydroxyphenyl) propanoic acid(17), coniferaldehyde(18), sinapaldehyde(19), benzyl β-primeveroside(20), 5-(hydroxymethyl) furfural(21), furan-2-carboxylic acid(22), and decanedioic acid(23). Among them, compound 1 is a new benzyl glucoside, compounds 2-4 are new pyranone compounds, compound 5 is a new natural product of pyranone. The NMR data of compounds 5 and 6 are reported for the first time. Compounds 6 and 20 were isolated from the Scrophularia plant for the first time. Compounds 8, 11, 14, 16, 18, 19, 22, and 23 were isolated from this plant for the first time. The in vitro cytotoxic activities of these compounds against three tumor cell lines(HepG2, A549, and 4 T1) were evaluated. The results showed that compounds 10 and 15 showed cytotoxic activities against HepG2 cells with IC_(50) values of(19.46±0.48) μmol·L~(-1) and(46.10±1.21) μmol·L~(-1).


Subject(s)
Chromatography, High Pressure Liquid , Drugs, Chinese Herbal/chemistry , Mass Spectrometry , Plant Roots/chemistry , Scrophularia/chemistry
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