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https://www.readbyqxmd.com/read/28719139/identification-of-metabolites-in-human-and-rat-urine-after-oral-administration-of-xiao-qing-long-tang-granule-using-ultra-high-performance-liquid-chromatography-combined-with-quadrupole-time-of-flight-mass-spectrometry
#1
Lei Zhou, Qiang Zhang, Wen Qi, Shuai Yan, Jialin Qu, Toshiaki Makino, Dan Yuan
Xiao-Qing-Long-Tang is a traditional Chinese formula used for the treatment of cold syndrome, bronchitis, and nasal allergies for thousands of years. However, the in vivo integrated metabolism of its multiple components and the active chemical constituents of Xiao-Qing-Long-Tang remain unknown. In this study, a method using ultra high performance liquid chromatography coupled with quadrupole time-of-flight tandem mass spectrometry was established for the detection and identification of the metabolites in human and rat urine after oral administration of Xiao-Qing-Long-Tang...
July 18, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28708573/natural-product-for-the-treatment-of-alzheimer-s-disease
#2
REVIEW
Thanh Tung Bui, Thanh Hai Nguyen
Alzheimer's disease (AD) is related to increasing age. It is mainly characterized by progressive neurodegenerative disease, which damages memory and cognitive function. Natural products offer many options to reduce the progress and symptoms of many kinds of diseases, including AD. Meanwhile, natural compound structures, including lignans, flavonoids, tannins, polyphenols, triterpenes, sterols, and alkaloids, have anti-inflammatory, antioxidant, anti-amyloidogenic, and anticholinesterase activities. In this review, we summarize the pathogenesis and targets for treatment of AD...
July 14, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/28699242/plant-lignans-inhibit-growth-trichothecene-biosynthesis-in-fusarium-graminearum
#3
(no author information available yet)
No abstract text is available yet for this article.
August 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28699001/identification-classification-and-transcriptional-profiles-of-dirigent-domain-containing-proteins-in-sugarcane
#4
Paula Macedo Nobile, Alexandra Bottcher, Juliana L S Mayer, Michael S Brito, Ivan A Dos Anjos, Marcos Guimarães de Andrade Landell, Renato Vicentini, Silvana Creste, Diego Mauricio Riaño-Pachón, Paulo Mazzafera
Dirigent (DIR) proteins, encoded by DIR genes, are referred to as "dirigent" because they direct the outcome of the coupling of the monolignol coniferyl alcohol into (+) or (-) pinoresinol, the first intermediates in the enantiocomplementary pathways for lignan biosynthesis. DIR domain-containing or DIR-like proteins are, thus, termed for not having a clear characterization. A transcriptome- and genome-wide survey of DIR domain-containing proteins in sugarcane was carried out, in addition to phylogenetic, physicochemical and transcriptional analyses...
July 11, 2017: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/28698304/prediction-of-clinically-relevant-herb-drug-clearance-interactions-using-a-whole-cell-approach-schisandra-sphenanthera-case-study
#5
Jonathan P Jackson, Kimberly M Freeman, Weslyn W Friley, Ashley G Herman, Christopher B Black, Kenneth R Brouwer, Amy L Roe
The Schisandraceae family is reported to have a range of pharmacological activities, including anti-inflammatory effects. As with all herbal preparations, extracts of Schisandra species are mixtures composed of >50 lignans including schizandrins and deoxyschizandrins. In China, Schisandra sphenanthera extract (SSE) is often co-administered with immunosuppressant treatment of transplant recipients. In cases of co-administration, the potential for herb-drug interactions (HDI) increases. Clinical studies have been employed to assess HDI of extracts including SSE...
July 11, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28691860/a-new-furofuran-lignan-from-piper-terminaliflorum-tseng
#6
Tie Liu, Qian Liang, Xin-Min Zhang, Shen-Yang Huang, Wen-Hui Xu
The chemical investigation of whole plants Piper terminaliflorum Tseng led to the isolation of one new furofuran lignan, 7-methoxyasarinin (1), along with three known amide alkaloids (2-4) as N-3,5-dimethoxy-4-hydroxycinnamoylpyrrole (2), dihydropipercide (3) and 1-[(2E,4E,9E)-10-(3,4-Methylenedioxyphenyl)-2,4,9-undecatrienoyl]pyrrolidine (4). Their structures were elucidated by extensive spectroscopic analyses, including 1D, 2D NMR and HR-ESI-MS, and by comparison with the literature. Compounds (2-4) were isolated from Piper terminaliflorum Tseng for the first time...
July 10, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28691595/application-of-hydrolases-and-probiotic-pediococcus-acidilactici-baltbio01-strain-for-cereal-by-products-conversion-to-bioproduct-for-food-feed
#7
Elena Bartkiene, Vadims Bartkevics, Vita Krungleviciute, Grazina Juodeikiene, Daiva Zadeike, Violeta Baliukoniene, Bronius Bakutis, Rasa Zelvyte, Antonello Santini, Dalia Cizeikiene
The aim of this study was to apply the enzymatic treatment and fermentation by Pediococcus acidilactici BaltBio01 strain for industrial cereal by-products conversion to food/feed bioproducts with high amount of probiotic lactic acid bacteria (LAB). LAB propagated in potato media and spray-dried remained viable during 12 months (7.0 log10 cfu/g) of storage and was used as a starter for cereal by-products fermentation. The changes of microbial profile, biogenic amines (BAs), mycotoxins, lactic acid (L(+)/D(-)), lignans and alkylresorcinols (ARs) contents in fermented cereal by-product were analysed...
July 9, 2017: International Journal of Food Sciences and Nutrition
https://www.readbyqxmd.com/read/28681599/structure-antifungal-activity-relationship-of-fluorinated-dihydroguaiaretic-acid-derivatives-and-preventive-activity-against-alternaria-alternata-japanese-pear-pathotype
#8
Satoshi Yamauchi, Hisashi Nishiwaki, Shoko Nakazaki, Koichi Akiyama
The structure-activity relationship of the antifungal fluorinated dihydroguaiaretic acid derivatives was evaluated. Some of the newly synthesized lignan compounds were found to show higher antifungal activity against phytopathogenic fungi such as Alternaria alternata (Japanese pear and apple pathotypes) and A. citri than the lead compound, 3-fuluoro-3'-methoxylignane-4'-ol (3). The broad antifungal spectrum of 3'-hydroxyphenyl derivative 16 was observed, and the 3'-fluoro-4'-hydroxyphenyl derivative 38 was found to show the highest activity against the A...
July 6, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28675628/a-sensitive-uhplc-ms-ms-method-for-the-simultaneous-quantification-of-three-lignans-in-human-plasma-and-its-application-to-a-pharmacokinetic-study
#9
Sook-Jin Kim, Hwajin Shin, Seong-Moon Cheon, Se-Mi Ko, Seong-Ho Ham, Young-Dal Kwon, Yong-Bok Lee, Hea-Young Cho
The aim of this study was to develop an analytical method to simultaneously analyze schizandrin, schizandrol B, and gomisin N lignans in human plasma using ultra high performance liquid chromatography with tandem mass spectrometry. The three lignans were separated using a mobile phase of water and acetonitrile containing 0.02% acetic acid equipped with a Kinetex C18 column (2.1 mm × 50 mm, 1.7 μm). This analysis was achieved by multiple reaction monitoring mode in an electrospray interface. The mass transitions were m/z 433...
July 4, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28674499/phytochemicals-approach-for-developing-cancer-immunotherapeutics
#10
REVIEW
Shu-Yi Yin, Ning-Sun Yang, Tien-Jen Lin
Phytochemicals or their derived compounds are being increasingly recognized as potentially potent complementary treatments for cancer. Among them, some phytochemicals are being actively evaluated for use as adjuvants in anticancer therapies. For instance, shikonin and hypericin were found to induce immunogenic cell death of specific cancer cells, and this effect was able to further activate the recognition activity of tumor cells by the host immune system. On the other hand, some derivatives of phytochemicals, such as dihydrobenzofuran lignan (Q2-3) have been found to induce the secretion of an endogenous anticancer factor, namely IL-25, from non-malignant cells...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28669348/the-structural-bioinformatics-analysis-of-biophenolic-lignan-estrogen-receptor-interaction
#11
Farzaneh Mohamadyar-Toupkanlou, Mina Esfandiari, Mahshid Sadat Kashef-Saberi, Mahboubeh Kabiri Renani, Masoud Soleimani
BACKGROUND: Plant lignans have proven efficacious in blocking estrogen receptors of breast cancer cells. However, available studies have mostly dealt with anti-cancer effects of groups of lignans in certain foods or plants and the effects of specific lignans, especially from a molecular interaction viewpoint, has been rarely addressed in the literature. OBJECTIVE: We aimed to computationally predict the binding ability and binding strength of pinoresinol, matairesinol, lariciresinol and secoisolariciresinol as potent ligands of estrogen receptor alpha (ER-α), in order to study these lignans as drugs...
June 23, 2017: Current Cancer Drug Targets
https://www.readbyqxmd.com/read/28667680/fast-and-comprehensive-characterization-of-chemical-ingredients-in-traditional-chinese-herbal-medicines-by-extractive-atmospheric-pressure-photoionization-eappi-mass-spectrometry
#12
Chengyuan Liu, Wu Wen, Jun Shao, Wan Zhao, Keke Qi, Jiuzhong Yang, Yang Pan
RATIONALE: The goal of this work is to employ extractive atmospheric pressure photoionization mass spectrometry (EAPPI MS) to characterize the constituents in traditional Chinese herbal medicine (TCHM) directly without chromatographic separation. METHODS: Sample was placed in 4 mL of methanol/water (v:v=3:1) in the nebulization cell, and then the ultrasonic nebulizer was switched on. Ultrasonic nebulization system allows the simultaneous sample extraction and introduction of extract aerosols...
July 1, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28666227/comprehensive-profiling-and-characterization-of-chemical-constituents-of-rhizome-of-anemarrhena-asphodeloides-bge
#13
De Ji, Zi-Yan Huang, Cheng-Hao Fei, Wei-Wei Xue, Tu-Lin Lu
The rhizome of Anemarrhena asphodeloides Bge. is commonly used as an herbal medicine in China. In this study, ultra-high performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UHPLC-QTOF-MS) was used, in both negative and positive ion modes, to comprehensively analyze the chemical constituents of A. asphodeloides. From the intact precursor ions, MS/MS fragmentation information, and previous reports, we identified 89 compounds. These compounds included 8 cyclic peptides, 11 flavones (9 xanthones), 45 steroidal saponins, 15 fatty acids, 3 lignans, and 7 other compounds...
June 19, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28662529/bioactivity-guided-investigation-of-the-anti-inflammatory-activity-of-hippophae-rhamnoides-fruits
#14
Dóra Rédei, Norbert Kúsz, Nikoletta Jedlinszki, Gábor Blazsó, István Zupkó, Judit Hohmann
According to modern ethnobotanical records, the fruit of Hippophae rhamnoides is effective in the treatment of different allergic symptoms. In order to obtain pharmacological evidence for this observation, the fruit was investigated for anti-inflammatory activity using in vivo animal models. Aqueous and 70% MeOH extracts were tested in 48/80-induced rat paw edema assay after oral administration, and it was found that the 70% MeOH extract (500 mg/kg) reduced significantly edema volume (0.660 ± 0.082 mL vs...
June 29, 2017: Planta Medica
https://www.readbyqxmd.com/read/28647178/traditional-usage-phytochemistry-and-pharmacology-of-croton-sylvaticus-hochst-ex-c-krauss
#15
REVIEW
Alfred Maroyi
Croton sylvaticus (C. sylvaticus) is widely used as herbal medicine by the indigenous people of tropical Africa. The potential of C. sylvaticus as herbal medicine, the phytochemistry and pharmacological properties of its parts used as herbal medicines are reviewed. The extensive literature survey revealed that C. sylvaticus is traditionally used to treat or manage at least 24 human and animal diseases and ailments. The species is used as herbal medicine for diseases and ailments such as abdominal pains, boils, fever, inflammation, malaria, rheumatism, swellings and tuberculosis and as ethnoveterinary medicine...
May 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28644981/chemical-profiling-and-antioxidant-evaluation-of-yangxinshi-tablet-by-hplc-esi-q-tof-ms-ms-combined-with-dpph-assay
#16
Junfeng Zhu, Xiaojiao Yi, Jinghui Zhang, Shuqing Chen, Yongjiang Wu
Yangxinshi Tablet (YXST) is a Chinese patent medicine commonly used to treat cardiovascular diseases. However, its detailed chemical basis and mechanisms of action have not been clarified. In this study, high performance liquid chromatography coupled with electrospray ionization quadrupole time-of-flight mass spectrometry (HPLC-ESI-Q-TOF-MS) was applied for comprehensive analysis of the chemical constituents in YXST. A total of 127 compounds, including 19 phenolic acids, 12 alkaloids, 51 flavanoids, 32 triterpenoids, 2 lignans, 2 phenylethanoid glycosides, 2 anthraquinones, 1 coumarin, and 6 other compounds, were identified or tentatively deduced by comparing their retention times and MS spectra with those of authentic standards or literature data...
June 15, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28641835/rapid-purification-of-diastereoisomers-from-piper-kadsura-using-supercritical-fluid-chromatography-with-chiral-stationary-phases
#17
Huaxia Xin, Zhuoshun Dai, Jianfeng Cai, Yanxiong Ke, Hui Shi, Qing Fu, Yu Jin, Xinmiao Liang
Supercritical fluid chromatography (SFC) with chiral stationary phases (CSPs) is an advanced solution for the separation of achiral compounds in Piper kadsura. Analogues and stereoisomers are abundant in natural products, but there are obstacles in separation using conventional method. In this paper, four lignan diastereoisomers, (-)-Galbelgin, (-)-Ganschisandrin, Galgravin and (-)-Veraguensin, from Piper kadsura were separated and purified by chiral SFC. Purification strategy was designed, considering of the compound enrichment, sample purity and purification throughput...
August 4, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28636288/the-first-total-synthesis-of-ovafolinin-a-and-b-unique-polycyclic-benzoxepin-lignans-via-a-cascade-cyclization
#18
Samuel James Davidson, David Barker
Ovafolinins A and B, isolated from Lyonia ovalifolia var. elliptica, are lignans which contain a unique penta- and tetracyclic benzoxepin bridged aryl tetralin structure. We report the first total synthesis of these natural products initially utilizing an acyl-Claisen rearrangement to construct the lignan backbone with correct relative stereochemistry. Judicious use of a bulky protecting group placed reactive moieties in the correct orientation resulting in a cascade reaction forming the benzoxepin bridged aryl tetralin from a linear precursor in a single step...
June 21, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28629933/lignans-from-the-root-of-wikstroemia-indica-and-their-cytotoxic-activity-against-panc-1-human-pancreatic-cancer-cells
#19
Hang Chang, Yuwei Wang, Xue Gao, Zehai Song, Suresh Awale, Na Han, Zhihui Liu, Jun Yin
Six new compounds, wikstronin A (1), wikstronin B (2), wikstresinol (3), acetylwikstresinol (4), bis-5',5'-(+)-matairesinol (5), bis-5,5'-(+)-matairesinol (6), together with 20 known compounds (7-26) were isolated from the CH2Cl2 extract of roots of Wikstroemia indica. Structures of compounds 1-6 were determined by extensive NMR and CD spectroscopic analysis. In vitro preferential cytotoxicity of all the isolates was evaluated against a PANC-1 human pancreatic cell line. Compounds 8 and 12 displayed mild preferential cytotoxicity in the nutrient-deprived medium (NDM) and without causing toxicity in normal nutrient-rich conditions...
June 16, 2017: Fitoterapia
https://www.readbyqxmd.com/read/28629201/systemic-induction-of-the-defensin-and-phytoalexin-pisatin-pathways-in-pea-pisum-sativum-against-aphanomyces-euteiches-by-acetylated-and-nonacetylated-oligogalacturonides
#20
Sameh Selim, Jean Sanssené, Stéphanie Rossard, Josiane Courtois
Oligogalacturonides (OGs) are known for their powerful ability to stimulate the plant immune system but little is known about their mode of action in pea (Pisum sativum). In the present study, we investigated the elicitor activity of two fractions of OGs, with polymerization degrees (DPs) of 2-25, in pea against Aphanomyces euteiches. One fraction was nonacetylated (OGs - Ac) whereas the second one was 30% acetylated (OGs + Ac). OGs were applied by injecting the upper two rachises of the plants at three- and/or four-weeks-old...
June 19, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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