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https://www.readbyqxmd.com/read/28194418/antineoplastic-effects-of-honokiol-on-melanoma
#1
Ruth Guillermo-Lagae, Sreevidya Santha, Milton Thomas, Emily Zoelle, Jonathan Stevens, Radhey S Kaushik, Chandradhar Dwivedi
Honokiol, a plant lignan has been shown to have antineoplastic effects against nonmelanoma skin cancer developments in mice. In this study, antineoplastic effects of honokiol were investigated in malignant melanoma models. In vitro effects of honokiol treatment on SKMEL-2 and UACC-62 melanoma cells were evaluated by measuring the cell viability, proliferation, apoptosis, cell cycle analysis, and expressions of various proteins associated with cell cycle progression and apoptosis. For the in vivo study, male nude mice inoculated with SKMEL-2 or UACC-62 cells received injections of sesame oil or honokiol for two to seven weeks...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28174564/commiphora-leptophloeos-phytochemical-and-antimicrobial-characterization
#2
Jorge J de Souza Pereira, Aline de P C Pereira, Jannyson J B Jandú, Josinete A da Paz, Sergio Crovella, Maria T Dos Santos Correia, Jaqueline de Azevêdo Silva
Commiphora leptophloeos is a plant specie usually known for its medicinal purposes in local communities in Northeast Brazil. In order to evaluate its therapeutic potential, we aimed to determine the phytochemical and antimicrobial properties of C. leptophloeos extracts. Thin Layer Chromatography (TLC) was able to detect the presence of phenolic compounds, flavonoids and reducing sugars. Three phenolic compounds were identified by HPLC and described as Gallic, Chlorogenic and Protocatechuic acids. On the other hand, H(1)NMR analysis revealed the presence of hinokinin, a bioactive lignan further characterized in the present work...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28170386/peripubertal-dietary-flavonol-and-lignan-intake-and-age-at-menarche-in-a-longitudinal-cohort-of-girls
#3
Nancy A Mervish, Susan L Teitelbaum, Ashley Pajak, Gayle C Windham, Susan M Pinney, Lawrence H Kushi, Frank M Biro, Mary S Wolff
BACKGROUND: Dietary phytoestrogens may alter hormonal activity in childhood. Flavonols and lignans are the most prevalent phytoestrogens in the Western diet.We examined whether higher intake of flavonols and lignans were associated with later age at menarche in a prospective study of young girls. METHODS: 1044 girls ages 6-8 years (mean 7.3 yr) with 2-4 24 hour dietary recalls during their baseline year were followed for 11 years until attainment of menarche in the Breast Cancer and Environment Research Project (BCERP)...
February 7, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28160867/fargesin-exerts-anti-inflammatory-effects-in-thp-1-monocytes-by-suppressing-pkc-dependent-ap-1-and-nf-%C3%A4-b-signaling
#4
Thu-Huyen Pham, Man-Sub Kim, Minh-Quan Le, Yong-Seok Song, Yesol Bak, Hyung-Won Ryu, Sei-Ryang Oh, Do-Young Yoon
BACKGROUND: Fargesin is a lignan from Magnolia fargesii, an oriental medicine used in the treatment of nasal congestion and sinusitis. The anti-inflammatory properties of this compound have not been fully elucidated yet. PURPOSE: This study focused on assessing the anti-inflammatory effects of fargesin on phorbal ester (PMA)-stimulated THP-1 human monocytes, and the molecular mechanisms underlying them. METHODS: Cell viability was evaluated by MTS assay...
January 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28159728/protocol-for-a-24-week-randomized-controlled-study-of-once-daily-oral-dose-of-flax-lignan-to-healthy-older-adults
#5
Jane Alcorn, Susan Whiting, Navita Viveky, Yunyun Di, Kerry Mansell, Sharyle Fowler, Lilian Thorpe, Ahmed Almousa, Pui Chi Cheng, Jennifer Jones, Jennifer Billinsky, Thomas Hadjistavropoulos
BACKGROUND: Increased oxidative stress and inflammation are associated with aging, and contribute to an increased risk of chronic disease in older adults. Flaxseed lignans demonstrate antioxidant and anti-inflammatory activity, but their ability to reduce oxidative stress and inflammation markers in older adult populations has received limited investigation. OBJECTIVE: This is a chronic intervention trial of community-dwelling healthy older adults to examine the effects of a flaxseed lignan (secoisolariciresinol diglucoside; SDG) enriched supplement (BeneFlax) compared to a placebo...
February 3, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28157651/sesamin-imparts-neuroprotection-against-intrastriatal-6-hydroxydopamine-toxicity-by-inhibition-of-astroglial-activation-apoptosis-and-oxidative-stress
#6
Tourandokht Baluchnejadmojarad, Monireh Mansouri, Jamileh Ghalami, Zahra Mokhtari, Mehrdad Roghani
Parkinson's disease (PD) is one of the most prevalent neurodegenerative disorders in elders. Sesamin is a lignan compound and the active constituent of sesame oil with antioxidant and anti-inflammatory properties. This study was carried out to explore the mechanisms underlying sesamin effect against unilateral striatal 6-hydroxydopamine (6-OHDA) model of PD. Intrastriatal 6-OHDA-lesioned rats were pretreated with sesamin at doses of 10 or 20mg/kg/day for one week. Sesamin at a dose of 20mg/kg attenuated motor imbalance in narrow beam test, lowered striatal level of malondialdehyde (MDA) and reactive oxygen species (ROS), improved superoxide dismutase (SOD) activity, lowered striatal caspase 3 activity and α-synuclein expression, attenuated glial fibrillary acidic protein (GFAP) immunoreactivity, depressed nigral neuronal apoptosis, and prevented damage of dopaminergic neurons using tyrosine hydroxylase (TH) immunohistochemistry...
January 31, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28152982/ugt74s1-is-the-key-player-in-controlling-secoisolariciresinol-diglucoside-sdg-formation-in-flax
#7
Bourlaye Fofana, Kaushik Ghose, Jason McCallum, Frank M You, Sylvie Cloutier
BACKGROUND: Flax lignan, commonly known as secoisolariciresinol (SECO) diglucoside (SDG), has recently been reported with health-promoting activities, including its positive impact in metabolic diseases. However, not much was reported on the biosynthesis of SDG and its monoglucoside (SMG) until lately. Flax UGT74S1 was recently reported to sequentially glucosylate SECO into SMG and SDG in vitro. However, whether this gene is the only UGT achieving SECO glucosylation in flax was not known...
February 2, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28152612/alashinols-f-and-g-two-lignans-from-stem-bark-of-syringa-pinnatifolia
#8
Xiao Feng, Guozhu Su, Yunyun Ye, Ruifei Zhang, Xinyao Yang, Bingzhao Du, Bing Peng, Pengfei Tu, Xingyun Chai
Two new lignans, alashinols F and G (1 and 2), together with two known analogues (-)-secoisolariciresinol (3) and meso-secoisolariciresinol (4) were isolated from the stem bark of Syringa pinnatifolia, a Mongolian folk medicine with anti-myocardial ischaemic effects. Their structures were elucidated on basis of spectroscopic data analyses, including MS and 1D and 2D NMR, and their absolute configurations were elucidated on the basis of experimental and calculated electronic circular dichroisms. The in vitro anti-inflammation and anti-hypoxia evaluations were also discussed...
February 2, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28152426/design-and-synthesis-of-a-new-series-of-3-5-disubstituted-isoxazoles-active-against-trypanosoma-cruzi-and-leishmania-amazonensis
#9
Rafael da Rosa, Milene Höehr de Moraes, Lara Almida Zimmermann, Eloir Paulo Schenkel, Mario Steindel, Lílian Sibelle Campos Bernardes
Chagas disease and leishmaniasis are neglected tropical diseases (NTDs) endemic in developing countries. Although there are drugs available for their treatment, efforts on finding new efficacious therapies are continuous. The natural lignans grandisin (1) and veraguensin (2) show activity against trypomastigote T. cruzi and their scaffold has been used as inspiration to design new derivatives with improved potency and chemical properties. We describe here the planning and microwave-irradiated synthesis of 26 isoxazole derivatives based on the structure of the lignans 1 and 2...
January 23, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28152041/differential-and-directional-estrogenic-signaling-pathways-induced-by-enterolignans-and-their-precursors
#10
Yun Zhu, Kayoko Kawaguchi, Ryoiti Kiyama
Mammalian lignans or enterolignans are metabolites of plant lignans, an important category of phytochemicals. Although they are known to be associated with estrogenic activity, cell signaling pathways leading to specific cell functions, and especially the differences among lignans, have not been explored. We examined the estrogenic activity of enterolignans and their precursor plant lignans and cell signaling pathways for some cell functions, cell cycle and chemokine secretion. We used DNA microarray-based gene expression profiling in human breast cancer MCF-7 cells to examine the similarities, as well as the differences, among enterolignans, enterolactone and enterodiol, and their precursors, matairesinol, pinoresinol and sesamin...
2017: PloS One
https://www.readbyqxmd.com/read/28146307/targeted-metabolomics-of-the-phenylpropanoid-pathway-in-arabidopsis-thaliana-using-reversed-phase-liquid-chromatography-coupled-with-tandem-mass-spectrometry
#11
Rohit Jaini, Peng Wang, Natalia Dudareva, Clint Chapple, John A Morgan
INTRODUCTION: The phenylpropanoid pathway is a source of a diverse group of compounds derived from phenylalanine, many of which are involved in lignin biosynthesis and serve as precursors for the production of valuable compounds, such as coumarins, flavonoids, and lignans. Consequently, recent efforts have been invested in mechanistically understanding monolignol biosynthesis, making the quantification of these metabolites vital. OBJECTIVE: To develop an improved and comprehensive analytical method for (i) extensively profiling, and (ii) accurately quantifiying intermediates of the monolignol biosynthetic network, using Arabidopsis thaliana as a model system...
February 1, 2017: Phytochemical Analysis: PCA
https://www.readbyqxmd.com/read/28139925/diterpenoids-and-lignans-from-cephalotaxus-fortunei
#12
Jin-Xin Zhao, Yao-Yue Fan, Jin-Biao Xu, Li-She Gan, Cheng-Hui Xu, Jian Ding, Jian-Min Yue
Five new diterpenoids including two Cephalotaxus troponoids (1 and 2), two 17-nor-cephalotane-type diterpenoids (3 and 4), and an abietane-type diterpenoid (5), two new lignans (6 and 7), and a new trisnorneoligan (8) along with eight known compounds were identified from the twigs and leaves of Cephalotaxus fortunei. The structure of 11-hydroxyhainanolidol was revised as 10-hydroxyhainanolidol (9) by X-ray crystallographic data. Compounds 3 and 4 are the first examples of 17-nor-cephalotane-type diterpenoids that are likely the biosynthesis precursors of the co-occurring troponoids (e...
January 31, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28139296/lignans-from-the-fruits-of-schisandra-chinensis-turcz-baill-inhibit-proprotein-convertase-subtilisin-kexin-type-9-expression
#13
Pisey Pel, Hee-Sung Chae, Piseth Nhoek, Woojin Yeo, Young-Mi Kim, Young-Won Chin
Bioactivity-guided fractionation of the fruits of Schisandra chinensis, using the proprotein convertase subtilisin-kexin type 9 (PCSK9) mRNA expression screening assay, led to isolation of two previously unknown lignans, 14-tigloylschinlignan D and rel-(7R, 8R, 7'R, 8'R)-manglisin E, along with 28 known compounds. All structures were established by NMR spectroscopic data as well as CD and MS analysis. All isolates were tested for their inhibitory activities on the mRNA expression of PCSK9. Of the tested compounds, four of the compounds rel-(7R, 8R, 7'R, 8'R)-manglisin E, (-)-schisandrin C, schinlignan D, and (+)-schisandrol B potently inhibited PCSK9 mRNA expression with IC50 values of 3...
January 27, 2017: Phytochemistry
https://www.readbyqxmd.com/read/28138744/enumeration-of-carboxyl-groups-carried-on-individual-components-of-humic-systems-using-deuteromethylation-and-fourier-transform-mass-spectrometry
#14
Alexander Zherebker, Yury Kostyukevich, Alexey Kononikhin, Oleg Kharybin, Andrey I Konstantinov, Kirill V Zaitsev, Eugene Nikolaev, Irina V Perminova
Here, we report a novel approach to enumeration of carboxylic groups carried by individual molecules of humic substances using selective chemical modification and isotopic labeling (deuteromethylation) and high-resolution electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI FTICR MS). Esterification was conducted with a use of thionyl chloride-deuteromethanol reagent under mild conditions to avoid transesterification. The deuteromethylated products were subjected to solid phase extraction using PPL Bond Elute cartridges prior to FTICR MS analysis...
January 30, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28128372/the-hepatoprotective-effect-of-phyllanthus-emblica-l-fruit-on-high-fat-diet-induced-non-alcoholic-fatty-liver-disease-nafld-in-sd-rats
#15
Cheng-Ze Huang, Yu-Tang Tung, Shih-Min Hsia, Chi-Hao Wu, Gow-Chin Yen
Non-alcoholic fatty liver disease (NAFLD), the most common chronic liver disease, is closely associated with metabolic syndrome and refers to the accumulation of hepatic steatosis not due to excess alcohol consumption. Phyllanthus emblica L. is a rich source of gallic acid and many known medicinally phytochemicals such as tannins, lignans, flavonoids, alkaloids, vitamin C, mucic acid, and ellagic acid. Our previous study has revealed that P. emblica exhibits inhibitory effects on hepatic steatosis and liver fibrosis in vitro, as well as gallic acid improves high fat diet (HFD)-induced dyslipidaemia, hepatosteatosis, and oxidative stress in vivo...
January 27, 2017: Food & Function
https://www.readbyqxmd.com/read/28116598/enterolactone-glucuronide-and-%C3%AE-glucuronidase-in-antibody-directed-enzyme-prodrug-therapy-for-targeted-prostate-cancer-cell-treatment
#16
Yunyun Di, Shaoping Ji, Philipp Wolf, Ed S Krol, Jane Alcorn
Evidence from preclinical and animal studies demonstrated an anticancer effect of flaxseed lignans, particularly enterolactone (ENL), against prostate cancer. However, extensive first-pass metabolism following oral lignan consumption results in their systemic availability primarily as glucuronic acid conjugates (ENL-Gluc) and their modest in vivo effects. To overcome the unfavorable pharmacokinetics and improve their effectiveness in prostate cancer, antibody-directed enzyme prodrug therapy (ADEPT) might offer a novel strategy to allow for restricted activation of ENL from circulating ENL-Gluc within the tumor environment...
January 23, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28110956/anti-hiv-diphyllin-glycosides-from-justicia-gendarussa
#17
Hong-Jie Zhang, Emily Rumschlag-Booms, Yi-Fu Guan, Kang-Lun Liu, Dong-Ying Wang, Wan-Fei Li, Van Hung Nguyen, Nguyen Manh Cuong, Djaja Doel Soejarto, Harry H S Fong, Lijun Rong
In a search for new anti-HIV active leads from over several thousands of plant extracts, we have identified a potent plant lead. The active plant is determined as Justicia gendarussa (Acanthaceae), a medicinal plant that has been used for the treatment of injury, arthritis and rheumatism in Asia including China. Our bioassay-guided fractionation of the methanol extract of the stems and barks of the plant led to the isolation of two anti-HIV compounds, justiprocumins A and B. The compounds are identified as new arylnaphthalide lignans (ANL) glycosides...
January 19, 2017: Phytochemistry
https://www.readbyqxmd.com/read/28105144/sesamin-attenuates-allergic-airway-inflammation-through-the-suppression-of-nuclear-factor-kappa-b-activation
#18
Liangchang Li, Hongmei Piao, Mingyu Zheng, Zhewu Jin, Liguang Zhao, Guanghai Yan
The aim of the present study is to determine the role of sesamin, the most abundant lignan in sesame seed oil, on the regulation of allergic airway inflammation in a murine asthma model. A BALB/c mouse model with allergic asthma was used to evaluate the effects of sesamin on nuclear factor-kappa B (NF-κB) activation. An enzyme-linked immunosorbent assay was used to determine protein expression in bronchoalveolar lavage (BAL) fluids. Hematoxylin and eosin staining was performed to examine histological changes...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28103726/antibacterial-activities-of-chemical-constituents-from-the-aerial-parts-of-hedyotis-pilulifera
#19
Hoai Thi Nguyen, Duc Viet Ho, Hung Quoc Vo, Anh Tuan Le, Hien Minh Nguyen, Takeshi Kodama, Takuya Ito, Hiroyuki Morita, Ain Raal
CONTEXT: Hedyotis pilulifera (Pit.) T.N. Ninh (Rubiaceae) has been used in Vietnamese ethnomedicine; the methanol extract exhibited antibacterial activity in our preliminary screening. OBJECTIVES: In this study, compounds from H. pilulifera were isolated and their antibacterial activity in vitro was evaluated. MATERIALS AND METHODS: The aerial parts of H. pilulifera (1.4 kg) were extracted with MeOH, suspended in water and ethyl acetate extract was chromatographed on a silica gel column...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28098805/chemical-constituents-from-the-roots-and-rhizomes-of-asarum-heterotropoides-var-mandshuricum-and-the-in-vitro-anti-inflammatory-activity
#20
Yu Jing, Yi-Fan Zhang, Ming-Ying Shang, Guang-Xue Liu, Yao-Li Li, Xuan Wang, Shao-Qing Cai
Anti-inflammatory compounds were investigated from the ethanol extract of the roots and rhizomes of Asarum heterotropoides var. mandshuricum, a traditional Chinese medicine called Xixin and used for pain and inflammatory. Nine new compounds were isolated, including six new lignans, neoasarinin A-C (1-3), neoasarininoside A and B (4 and 5), and asarinin B (7), and one new monoterpene, asarincin A (8), two new amides, asaramid II and III (10 and 11), and one new natural monoterpene, asaricin B (9), along with 37 known compounds (6, 12-47)...
January 13, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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