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https://www.readbyqxmd.com/read/28936847/-analysis-and-evaluation-of-alkaloids-and-flavonoids-in-flower-of-sophora-flavescens-from-shanxi-province
#1
Huang-Qin Zhang, Zhen-Hua Zhu, Da-Wei Qian, Ze-Bin Weng, Sheng Guo, Jin-Ao Duan, Zhen-Hong Lei, An-Ping Li
This study intends to explore the potential resource-orientedutilization value of the flower of Sophora flavescents by analyzing alkaloids and flavonoids in the flower of S. flavescens from Shanxi province. This study established a rapid UPLC-TQ-MS/MS method that is used for determination of seven alkaloids and seven flavonoids in the flower of S.flavescens. The different florescences all have the seven detected alkaloids such as cytisine, oxy-matrine, oxy-sophocarpine, sophoridine, N-methylcytisine, matrine, sophocarpine...
December 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28933094/-protective-effects-of-luteolin-against-acetaminophen-induced-damage-in-l02-liver-cells
#2
Lan-Zhi He, Ya-Kun Meng, Yan-Zhong Han, Zhen-Fang Zhang, Ping Yin, Xiu-Xiu Sang, Xiao-He Xiao, Zhao-Fang Bai
This paper was aimed to investigate the protective effects of luteolin (Lut) against acetaminophen(APAP)-induced damage in L02 liver cells. CCK-8 was used to detect the cell activation of L02 cells treated by different Lut. The concentration and time of APAP induced L02 cell damage was screened. The effect of Lut on APAP induced apoptosis of L02 cells was detected by cell morphological observation, CCK-8 assay and flow cytometry. The contents of MDA, GSH and SOD activity in cell supernatant were detected by colorimetric assay...
November 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28929685/-simultaneous-determination-of-8-main-compounds-in-eclipta-herba-by-uplc
#3
Xue-Feng Hou, Shuai Sun, Gang Wang, Hui-Hui Qiu, Shu-Min Ding, Ying Liu, Dan Liu, Liang Feng, Xiao-Bin Jia
To establish an UPLC method for the simultaneous determination of 8 compounds in Eclipta Herba, such as isoquercitrin, luteoloside, demethylwedelolactone, isochlorogenic acid A, isochlorogenic acid C, luteolin, wedelolactone and apigenin. The experiment was performed with a Waters Acquity UPLC BEH C₁₈ (2.1 mm×100 mm, 1.7 μm) column by gradient elution of 0.1% formic acid in water and acetonitrile: 0-4 min,10%-13% A; 4-10 min, 13%-16% A; 10-13 min, 16%-25% A; 13-17 min, 25%-28% A; 17-20 min,28%-40% A;20-25 min,40%-95% A...
November 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28927111/luteolin-reduces-migration-of-human-glioblastoma-cell-lines-via-inhibition-of-the-p-igf-1r-pi3k-akt-mtor-signaling-pathway
#4
Qiang Wang, Handong Wang, Yue Jia, Hui Ding, Li Zhang, Hao Pan
Luteolin (3',4',5,7-tetrahydroxyflavone) is a common dietary flavonoid, which has been demonstrated to exert anticancer effects in multiple cancer models. However, the detailed mechanisms underlying the inhibitory effect of luteolin on glioblastoma cell metastasis remain poorly understood. The present study assessed the effects of luteolin in the U251MG and U87MG human glioblastoma cell lines. Luteolin treatment significantly inhibited glioblastoma cell migration, and this effect was associated with downregulated matrix metalloproteinase (MMP)-2, MMP-9 and upregulated tissue inhibitor of metalloproteinase (TIMP)-1 and TIMP-2...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28925154/-research-of-regulating-synthesis-of-luteolin-and-luteoloside-of-lonicera-japonica-by-ljfns-%C3%A2-1-1-and-ljfns-%C3%A2-2-1-treated-with-5-azac
#5
Shuang Liu, Jian Yang, Liang-Ping Zha, Yu-Yang Zhao, Yong Liu, Yuan Yuan, Lu-Qi Huang
This study is aimed to explore the mechanism of catalyzing the synthesis of luteolin and luteoloside by LjFNS Ⅱ 1.1 and LjFNS Ⅱ 2.1.The leaves of Lonicera japonica were treated with different concentrations of 5-azaC(20,40,60,80,100 μmol•L-1) for three periods(1,2,3 d). Firstly, we cloned LjFNS Ⅱ 1.1 and LjFNS Ⅱ 2.1. Secondly, we analyzed the expression levels of LjFNS Ⅱ 1.1 and LjFNS Ⅱ 2.1 by Real-Time PCR and the contents of luteolin and luteoloside determined by UPLC-MS/MS. The results explained the expression levels of LjFNS Ⅱ 1...
October 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28919860/a-multidirectional-perspective-for-novel-functional-products-in-vitro-pharmacological-activities-and-in-silico-studies-on-ononis-natrix-subsp-hispanica
#6
Serife Yerlikaya, Gokhan Zengin, Adriano Mollica, Mehmet C Baloglu, Yasemin Celik Altunoglu, Abdurrahman Aktumsek
The genus Ononis has important value as traditional drugs and foods. In the present work, we aimed to assess the chemical profiles and biological effects of Ononis natrix subsp. hispanica extracts (ethyl acetate, methanol, and water). For chemical profile, total and individual phenolic components were detected. For biological effects, antioxidant (DPPH, ABTS, CUPRAC, FRAP, phosphomolybdenum, and metal chelating assays), enzyme inhibitory (against cholinesterase, tyrosinase, α-amylase and α-glucosidase), antimicrobial, DNA protection and cytotoxic abilities were tested...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28912714/anti-inflammatory-and-analgesic-effects-of-polygonum-orientale-l-extracts
#7
Kai-Jun Gou, Rui Zeng, Yan Dong, Qi-Qi Hu, Huang-Wan-Yin Hu, Katherine G Maffucci, Qi-Ling Dou, Qing-Bo Yang, Xu-Hua Qin, Yan Qu
Background and Purpose:Polygonum orientale L. (family: Polygonaceae), named Hongcao in China, is a Traditional Chinese Medicinal and has long been used for rheumatic arthralgia and rheumatoid arthritis. However, no pharmacological and mechanism study to confirm these clinic effects have been published. In this investigation, the anti-inflammatory, analgesic effects and representative active ingredient compounds of P. orientale have been studied. Methods: Dried small pieces of the stems and leaves of P. orientale were decocted with water and partitioned successively to obtain ethyl acetate and ethyl ether extract of P...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28895237/a-comprehensive-characterisation-of-rosemary-tea-obtained-from-rosmarinus-officinalis-l-collected-in-a-sub-humid-area-of-tunisia
#8
Mariem Achour, Raquel Mateos, Maha Ben Fredj, Ali Mtiraoui, Laura Bravo, Saad Saguem
INTRODUCTION: Rosemary (Rosmarinus officinalis L.) is an aromatic plant common in Tunisia and it is widely consumed as a tea in traditional cuisine and in folk medicine to treat various illnesses. Currently, most research efforts have been focused on rosemary essential oil, alcoholic and aqueous extracts, however, little is reported on rosemary infusion composition. OBJECTIVE: To investigate compounds present in rosemary tea obtained from Rosmarinus officinalis L...
September 12, 2017: Phytochemical Analysis: PCA
https://www.readbyqxmd.com/read/28885001/two-are-better-than-one-halloysite-nanotubes-supported-surface-imprinted-nanoparticles-using-synergy-of-metal-chelating-and-low-pka-boronic-acid-monomers-for-highly-specific-luteolin-binding-under-neutral-condition
#9
Shucheng Liu, Jinxin Liu, Jianming Pan, Jialu Luo, Xiangheng Niu, Tao Zhang, Fengxian Qiu
Surface-imprinted nanoparticles with double recognition (DM-MIPs) are fabricated onto halloysite nanotubes (HNTs) for highly specific separation of natural flavone luteolin (LTL) under neutral condition. Specifically, a two-step strategy via consecutive surface-initiated atom transfer radical polymerization (SI-ATRP) is employed to introduce inherent recognition of molecular imprinting and reversible covalent affinity of boronic acid ligands and immobilized Zn(2+) into DM-MIPs. First, Zn(2+)-immobilized poly(vinyl imidazole) (PVLD) shell based on the HNTs via the first SI-ATRP is prepared to capture LTL by metal chelating...
September 14, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28884178/screening-of-potential-anti-adipogenic-effects-of-phenolic-compounds-showing-different-chemical-structure-in-3t3-l1-preadipocytes
#10
Andrea Mosqueda-Solís, Arrate Lasa, Saioa Gómez-Zorita, Itziar Eseberri, Catalina Picó, María P Portillo
This study was designed to analyze the anti-adipogenic effect of fifteen phenolic compounds from various chemical groups in 3T3-L1 pre-adipocytes. Cells were treated with 25 μM, 10 μM or 1 μM of apigenin, luteolin, catechin, epicatechin, epigallocatechin, genistein, daizein, naringenin, hesperidin, quercetin, kaempferol, resveratrol, vanillic acid, piceatannol and pterostilbene for 8 days. At 25 μM lipid accumulation was reduced by all the compounds, with the exception of catechin, epicatechin and epigallocatechin...
September 8, 2017: Food & Function
https://www.readbyqxmd.com/read/28878808/luteolin-quercetin-genistein-and-quercetagetin-inhibit-the-effects-of-lipopolysaccharide-obtained-from-porphyromonas-gingivalis-in-h9c2-cardiomyoblasts
#11
Gloria Gutiérrez-Venegas, Alfredo Torras-Ceballos, Juan Arturo Gómez-Mora, Berenice Fernández-Rojas
BACKGROUND: One of the microorganisms from dental plaque associated with severe inflammatory responses in infectious endocarditis is Porphyromonas gingivalis. It is a Gram-negative bacteria harvested from chronic periodontitis patients. Lipopolysaccharide (LPS) obtained from P. gingivalis promotes the expressions of interleukin-1 (IL-1), IL-6 and tumor necrosis factor alpha (TNF-α). Flavonoids are thought to participate in processes that control inflammation, such as the expression of cyclooxygenase-2 (COX-2)...
2017: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28875706/dietary-flavonoids-and-acarbose-synergistically-inhibit-alpha-glucosidase-and-lower-postprandial-blood-glucose
#12
Bowei Zhang, Xia Li, Wenlong Sun, Yan Xing, Zhilong Xiu, Chunlin Zhuang, Yuesheng Dong
The inhibition of porcine pancreatic α-amylase and mammalian α-glucosidase by sixteen individual flavonoids was determined. The IC50 values for baicalein, (+)-catechin, quercetin, and luteolin were 74.1 ± 5.6, 175.1 ± 9.1, 281.2 ± 19.2, and 339.4 ± 16.3 μM, respectively, against α-glucosidase. The IC50 values for apigenin and baicalein were 146.8 ± 7.1 and 446.4 ± 23.9 μM, respectively, against α-amylase. The combination of baicalein, quercetin or luteolin with acarbose showed synergistic inhibition, and the combination of (+)-catechin with acarbose showed antagonistic inhibition of α-glucosidase...
September 6, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28872689/metabolic-interactions-between-acetaminophen-paracetamol-and-two-flavonoids-luteolin-and-quercetin-through-in-vitro-inhibition-studies
#13
Lei Cao, Awewura Kwara, David J Greenblatt
OBJECTIVES: Excessive exposure to acetaminophen (APAP, paracetamol) can cause liver injury through formation of a reactive metabolite that depletes hepatic glutathione and causes hepatocellular oxidative stress and damage. Generation of this metabolite is mediated by Cytochrome-P450 (CYP) isoforms, mainly CYP2E1. A number of naturally occurring flavonoids can mitigate APAP-induced hepatotoxicity in experimental animal models. Our objective was to determine the mechanism of these protective effects and to evaluate possible human applicability...
September 5, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28868116/bio-effectiveness-of-the-main-flavonoids-of-achillea-millefolium-in-the-pathophysiology-of-neurodegenerative-disorders-a-review
#14
REVIEW
Fatemeh Ayoobi, Ali Shamsizadeh, Iman Fatemi, Alireza Vakilian, Mohammad Allahtavakoli, Gholamhossein Hassanshahi, Amir Moghadam-Ahmadi
The Achillea millefolium L. (Yarrow) is a common herb which is widely being used, worldwide. Achillea is being used for treatment of many disorders since centuries. It is considered safe for supplemental use and flavonoids such as kaempferol, luteolin and apigenin are of main constituents present in Achillea. Most of both antioxidant and anti-inflammatory properties of this herb have been attributed to its flavonoid content. Oxidative and inflammatory processes play important roles in pathogenesis of neurodegenerative diseases...
June 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28864954/comparison-of-the-trace-elements-and-active-components-of-lonicera-japonica-flos-and-lonicera-flos-using-icp-ms-and-hplc-pda
#15
Yueran Zhao, Deqiang Dou, Yueqiu Guo, Yue Qi, Jun Li, Dong Jia
Thirteen trace elements and active constituents of 40 batches of Lonicera japonica flos and Lonicera flos were comparatively studied using inductively coupled plasma mass-spectrometry (ICP-MS) and high-performance liquid chromatography-photodiode array (HPLC-PDA). The trace elements were (24)Mg, (52)Cr, (55)Mn, (57)Fe, (60)Ni, (63)Cu, (66)Zn, (75)As, (82)Se, (98)Mo, (114)Cd, (202)Hg, and (208)Pb, and the active compounds were chlorogenic acid, 3,5-O-dicaffeoylquinc acid, 4,5-O-dicaffeoylquinc acid, luteolin-7-O-glucoside, and 4-O-caffeoylquinic acid...
September 1, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28858228/health-promoting-effects-of-thymus-herba-barona-thymus-pseudolanuginosus-and-thymus-caespititius-decoctions
#16
Andrea F Afonso, Olívia R Pereira, Rodrigo T Neto, Artur M S Silva, Susana M Cardoso
Thymus herba-barona, Thymus pseudolanuginosus, and Thymus caespititius decoctions were screened for their phenolic constituents, along with their potential antioxidant, anti-inflammatory, and antibacterial activities. The total phenolic compounds in the extracts of the three plants ranged from 236.0 ± 26.6 mgGAE/g (T. caespititus) to 293.0 ± 30.5 mgGAE/g of extract (T. pseudolanuginosus), being particularly rich in caffeic acid derivatives, namely rosmarinic acid and its structural isomers, as well as flavones, such as luteolin-O-glucuronide...
August 31, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28856944/inhibition-of-human-cytochromes-p450-2a6-and-2a13-by-flavonoids-acetylenic-thiophenes-and-sesquiterpene-lactones-from-pluchea-indica-and-vernonia-cinerea
#17
Supattra Boonruang, Khanistha Prakobsri, Phisit Pouyfung, Ekaruth Srisook, Aruna Prasopthum, Pornpimol Rongnoparut, Songklod Sarapusit
The human liver cytochrome P450 (CYP) 2A6 and the respiratory CYP2A13 enzymes play role in nicotine metabolism and activation of tobacco-specific nitrosamine carcinogens. Inhibition of both enzymes could offer a strategy for smoking abstinence and decreased risks of respiratory diseases and lung cancer. In this study, activity-guided isolation identified four flavonoids 1-4 (apigenin, luteolin, chrysoeriol, quercetin) from Vernonia cinerea and Pluchea indica, four hirsutinolide-type sesquiterpene lactones 5-8 from V...
December 2017: Journal of Enzyme Inhibition and Medicinal Chemistry
https://www.readbyqxmd.com/read/28840692/-studies-on-chemical-constituents-of-clinopodium-chinense
#18
Ling-Tian Wang, Zhong-Hao Sun, Ming-Liang Zhong, Hai-Feng Wu, Hai-Jing Zhang, Nai-Liang Zhu, Gui-Bo Sun, Xiao-Xia Ye, Xu-Dong Xu, Yin-di Zhu, Jun-Shan Yang
Twenty-eight compounds were isolated and purified from Clinopodium chinense by Sephedax LH-20, ODS, MCI and preparative HPLC. Their structures were identified as apigenin (1), apigenin-7-O-β-D-glucopyranoside (2), apigenin-7-O-β-D-glucuronopyranoside (3), thellungianol (4), apigenin-7-O-β-D-rutinoside (5), luteolin (6), luteolin-4'-O-β-D-glucopyranoside (7), apigenin-7-O-β-D-pyranglycuronate butyl ester (8), luteolin-7-O-β-D-rutinoside (9), luteolin-7-O-β-D-noehesperidoside (10), acacetin (11), acacetin-7-O-β-D-glucuronopyranoside (12), buddleoside (13), naringenin (14), pruning (15), nairutin (16), isosakuranetin (17), isosakuranin (18), didymin (19), hesperidin (20), kaempferol (21), quercetin (22), kaempferol-3-O-α-L-rahmnoside (23), p-hydroxycinnamic acid (24), caffeic acid (25), cis-3-[2-[1-(3,4-dihydroxy-phenyl)-1 -hydroxymethyl]-1,3-ben-zodioxol-5-yl]-(E)-2-propenoic acid (26), mesaconic acid (27), gentisic acid 5-O-β-D-(6'-salicylyl)-glucopyranoside (28)...
July 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28840299/antimicrobial-and-antioxidant-activities-of-the-extract-and-fractions-of-tetradenia-riparia-hochst-codd-lamiaceae-leaves-from-brazil
#19
Ana Claudia A M Fernandez, Maurício F Rosa, Carla M M Fernandez, Wanessa C Bortolucci, Ulisses Z Melo, Vera L D Siqueira, Diógenes A G Cortez, José E Gonçalves, Giani A Linde, Zilda C Gazim
Tetradenia riparia (Lamiaceae) is native to Central Africa popularly known as myrrh, used in folk medicine to treat various diseases like malaria, gastroenteritis, and tropical skin disease. This research was to evaluate the antioxidant and antibacterial activities of the crude extract (CE) and fractions (FR) of the T. riparia by classical chromatography. The CE of T. riparia leaves was submitted to column chromatographic fractionation to obtain four fractions of the interest, which were identified by nuclear magnetic resonance and gas chromatograph coupled to mass spectrum: FR-I (abieta-7,9(11)-dien-13-β-ol), FR-II (Ibozol), FR-III (8 (14), 15-sandaracopimaradiene-2α, 18-diol and 8 (14), 15-sandaracopimaradiene-7α, 18-diol), and FR-IV (Astragalin, Boronolide and Luteolin)...
August 24, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28833875/characterization-of-phenolic-compounds-in-green-and-red-oak-leaf-lettuce-cultivars-by-uhplc-dad-esi-qtof-ms-using-ms-e-scan-mode
#20
Gabriela E Viacava, Sara I Roura, Luis A Berrueta, Carmen Iriondo, Blanca Gallo, Rosa M Alonso-Salces
Lettuce (Lactuca sativa) is one of the most popular leafy vegetables in the world and constitutes a major dietary source of phenolic compounds with health promoting properties. In particular, the demand for green and red oak-leaf lettuces have considerably increased in the last years but few data on their polyphenol composition is available. Moreover, the utilization of analytical edge technology can provide new structural information and allow the identification of unknown polyphenols. In the present study the phenolic profiles of green and red oak-leaf lettuce cultivars were exhaustively characterized by ultrahigh performance liquid chromatography (UHPLC) coupled online to diode array detection (DAD), electrospray ionization (ESI) and quadrupole time-of-flight mass spectrometry (QToF/MS), using the MS(E) instrument acquisition mode for recording simultaneously exact masses of precursor and fragment ions...
August 22, 2017: Journal of Mass Spectrometry: JMS
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