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https://www.readbyqxmd.com/read/28202018/de-novo-biosynthesis-of-pterostilbene-in-an-escherichia-coli-strain-using-a-new-resveratrol-o-methyltransferase-from-arabidopsis
#1
Kyung Taek Heo, Sun-Young Kang, Young-Soo Hong
BACKGROUND: Pterostilbene, a structural analog of resveratrol, has higher oral bioavailability and bioactivity than that of the parent compound; but is far less abundant in natural sources. Thus, to efficiently obtain this bioactive resveratrol analog, it is necessary to develop new bioproduction systems. RESULTS: We identified a resveratrol O-methyltransferase (ROMT) function from a multifunctional caffeic acid O-methyltransferase (COMT) originating from Arabidopsis, which catalyzes the transfer of a methyl group to resveratrol resulting in pterostilbene production...
February 15, 2017: Microbial Cell Factories
https://www.readbyqxmd.com/read/28199829/preclinical-efficacy-failure-of-human-cns-derived-stem-cells-for-use-in-the-pathway-study-of%C3%A2-cervical-spinal-cord-injury
#2
Aileen J Anderson, Katja M Piltti, Mitra J Hooshmand, Rebecca A Nishi, Brian J Cummings
We previously showed the efficacy of multiple research cell lines (RCLs) of human CNS neural stem cells (HuCNS-SCs) in mouse and rat models of thoracic spinal cord injury (SCI), supporting a thoracic SCI clinical trial. Experts recommend in vivo preclinical testing of the intended clinical cell lot/line (CCL) in models with validity for the planned clinical target. We therefore tested the efficacy of two HuCNS-SC lines in cervical SCI: one RCL, and one CCL intended for use in the Pathway Study of cervical SCI in man...
February 14, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28193000/compound-specific-chlorine-isotope-analysis-of-tetrachloromethane-and-trichloromethane-by-gc-irms-vs-gc-qms-method-development-and-evaluation-of-precision-and-trueness
#3
Benjamin Heckel, Diana Rodríguez-Fernández, Clara Torrentó, Armin H Meyer, Jordi Palau, Cristina Domenech, Mònica Rosell, Albert Soler, Daniel Hunkeler, Martin Elsner
Compound-specific chlorine isotope analysis of tetrachloromethane (CCl4) and trichloromethane (CHCl3) was explored by both, gas chromatography - isotope ratio mass spectrometry (GC-IRMS) and GC - quadrupole MS (GC-qMS), where GC-qMS was validated in an interlaboratory comparison between Munich and Neuchâtel with the same type of commercial GC-qMS instrument. GC-IRMS measurements analyzed CCl isotopologue ions, whereas GC-qMS analyzed the isotopologue ions CCl3, CCl2, CCl (of CCl4) and CHCl3, CHCl2, CHCl (of CHCl3), respectively...
February 10, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28192761/a-comparison-of-bayesian-and-non-linear-regression-methods-for-robust-estimation-of-pharmacokinetics-in-dce-mri-and-how-it-affects-cancer-diagnosis
#4
Nikolaos Dikaios, David Atkinson, Chiara Tudisca, Pierpaolo Purpura, Martin Forster, Hashim Ahmed, Timothy Beale, Mark Emberton, Shonit Punwani
The aim of this work is to compare Bayesian Inference for nonlinear models with commonly used traditional non-linear regression (NR) algorithms for estimating tracer kinetics in Dynamic Contrast Enhanced Magnetic Resonance Imaging (DCE-MRI). The algorithms are compared in terms of accuracy, and reproducibility under different initialization settings. Further it is investigated how a more robust estimation of tracer kinetics affects cancer diagnosis. The derived tracer kinetics from the Bayesian algorithm were validated against traditional NR algorithms (i...
February 5, 2017: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/28192731/isotrifoliol-inhibits-pro-inflammatory-mediators-by-suppression-of-tlr-nf-%C3%AE%C2%BAb-and-tlr-mapk-signaling-in-lps-induced-raw264-7-cells
#5
Hua Li, Jeong-Hyun Yoon, Hyo-Jun Won, Hyeon-Seon Ji, Heong Joo Yuk, Ki Hun Park, Ho-Yong Park, Tae-Sook Jeong
Soybeans, produced by Glycine max (L.) Merr., contain high levels of isoflavones, such as genistein and daidzein. However, soy leaves contain more diverse and abundant flavonol glycosides and coumestans, as compared to the soybean. This study investigated the anti-inflammatory effects of the major coumestans present in soy leaf (coumestrol, isotrifoliol, and phaseol) in lipopolysaccharide (LPS)-induced RAW264.7 cells. Coumestans significantly reduced LPS-induced nitric oxide (NO), prostaglandin E2 (PGE2), and reactive oxygen species (ROS) production; isotrifoliol had the most potent anti-inflammatory activity...
February 10, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28186770/biocompatible-reduction-and-ph-dual-responsive-core-cross-linked-micelles-based-on-multi-functional-amphiphilic-linear-hyperbranched-copolymer-for-controlled-anticancer-drug-delivery
#6
Kun Tian, Xu Jia, Xubo Zhao, Peng Liu
Novel strategy has been developed for fabricating the biocompatible reduction and pH dual-responsive core cross-linked (CCL) micelles as drug delivery system (DDS) for the controlled anticancer drug delivery, via the atom transfer radical polymerization (ATRP) of tert-butyl acrylate (tBA) with N,N'-bis (acryloyl)cystamine (BACy) as crosslinker and a multi-functional amphiphilic linear-hyperbranched copolymer as macroinitiator, which was synthesized via the self-condensing vinyl co-polymerization (SCVCP) of tert-butyl acrylate (tBA) and p-chloromethylstyrene (CMS) with a poly(ethylene glycol) (PEG) based initiator (mPEG-Br)...
February 10, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28179378/the-human-immune-response-to-respiratory-syncytial-virus-infection
#7
REVIEW
Clark D Russell, Stefan A Unger, Marc Walton, Jürgen Schwarze
Respiratory syncytial virus (RSV) is an important etiological agent of respiratory infections, particularly in children. Much information regarding the immune response to RSV comes from animal models and in vitro studies. Here, we provide a comprehensive description of the human immune response to RSV infection, based on a systematic literature review of research on infected humans. There is an initial strong neutrophil response to RSV infection in humans, which is positively correlated with disease severity and mediated by interleukin-8 (IL-8)...
April 2017: Clinical Microbiology Reviews
https://www.readbyqxmd.com/read/28177690/ciliary-neurotrophic-factor-analogue-aggravates-ccl-sub-4-sub-induced-acute-hepatic-injury-in-rats
#8
Ming-Xia Cui, Jun-Feng Jiang, Guang-Ning Min, Wei Han, Yong-Jie Wu
Ciliary neurotrophic factor (CNTF) and CNTF analogs were reported to have hepatoprotective effect and ameliorate hepatic steatosis in db/db or high fat diet-fed mice. Since hepatic steatosis and injury is also commonly induced by hepatotoxin, the aim of the present study is to clarify whether CNTF could alleviate hepatic steatosis and injury which induced by carbon tetrachloride (CCl4). Unexpectedly, when combined with CCl4, CNTF aggravated hepatic steatosis and liver injury. The mechanism is associated with effects of CNTF which inhibited lipoproteins secretion and drastically impaired lipoproteins ability to act as transport vehicles for lipids from the liver to the circulation...
December 8, 2016: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28168393/enhanced-colorectal-cancer-metastases-in-the-alcohol-injured-liver
#9
Ashley M Mohr, John J Gould, Jacy L Kubik, Geoffrey A Talmon, Carol A Casey, Peter Thomas, Dean J Tuma, Benita L McVicker
Metastatic liver disease is a major cause of mortality in colorectal cancer (CRC) patients. Alcohol consumption is a noted risk factor for secondary cancers yet the role of alcoholic liver disease (ALD) in colorectal liver metastases (CRLM) is not defined. This work evaluated tumor cell colonization in the alcoholic host liver using a novel preclinical model of human CRC liver metastases. Immunocompromised Rag1-deficient mice were fed either ethanol (E) or isocaloric control (C) diets for 4 weeks prior to intrasplenic injection of LS174T human CRC cells...
February 6, 2017: Clinical & Experimental Metastasis
https://www.readbyqxmd.com/read/28165422/characterization-of-polysaccharides-with-antioxidant-and-hepatoprotective-activities-from-the-edible-mushroom-oudemansiella-radicata
#10
Qin Liu, Mengjuan Zhu, Xueran Geng, Hexiang Wang, Tzi Bun Ng
The preliminary structure, in vitro antioxidant and in vivo hepatoprotective activities of water-soluble polysaccharides (ORWP) and alkali-soluble polysaccharides (ORAP), prepared from the mushroom Oudemansiella radicata, were investigated. Both ORWP and ORAP were heteropolysaccharides with mannose, glucose and galactose being the main monosaccharide components. Regarding the antioxidant activities, ORWP and ORAP showed effective 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity, hydrogen peroxide scavenging activity and lipid peroxidation inhibitory effects, as well as moderate reducing power and Fe(2+) chelating activity...
February 4, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28165393/reduced-sharpin-and-lubac-formation-may-contribute-to-ccl%C3%A2-or-acetaminophen-induced-liver-cirrhosis-in-mice
#11
Takeshi Yamamotoya, Yusuke Nakatsu, Yasuka Matsunaga, Toshiaki Fukushima, Hiroki Yamazaki, Sunao Kaneko, Midori Fujishiro, Takako Kikuchi, Akifumi Kushiyama, Fuminori Tokunaga, Tomoichiro Asano, Hideyuki Sakoda
Linear ubiquitin chain assembly complex (LUBAC), composed of SHARPIN (SHANK-associated RH domain-interacting protein), HOIL-1L (longer isoform of heme-oxidized iron-regulatory protein 2 ubiquitin ligase-1), and HOIP (HOIL-1L interacting protein), forms linear ubiquitin on nuclear factor-κB (NF-κB) essential modulator (NEMO) and induces NF-κB pathway activation. SHARPIN expression and LUBAC formation were significantly reduced in the livers of mice 24 h after the injection of either carbon tetrachloride (CCl₄) or acetaminophen (APAP), both of which produced the fulminant hepatitis phenotype...
February 4, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28162157/-comparison-of-three-surgical-patterns-for-cholecysto-choledocholithiasis
#12
J W Du, J H Jin, W X Hu, Z X Wang, H P Zhao
Objective: To investigate the clinical efficiencies of the three surgical patterns in the treatment of cholecysto-choledocholithiasis (CCL). Methods: A total of 157 patients with CCL, during the period from Janury 2012 to Janury 2016 at the Affiliated Hospital of Inner Mongolia Medical University, were divided into three groups according to surgical patterns: LC-LCBDE Group (laparoscopic cholecystectomy+ laparoscopic common bile duct exploration, n=49), ERCP-LC Group (endoscopic retrograde cholangiopancreatography+ laparoscopic cholecystectomy, n=51) and OC-OCBDE Group (open cholecystectomy+ open common bile duct exploration, n=57)...
January 24, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28161330/testosterone-increases-ccl-2-expression-in-visceral-adipose-tissue-from-obese-women-of-reproductive-age
#13
Nicolás Crisosto, Cristián Flores, Manuel Maliqueo, Bárbara Echiburú, Jaime Vásquez, Fernando Maluenda, Teresa Sir-Petermann
CONTEXT: Hyperandrogenic states and obesity in women are associated with insulin-resistance. Androgens reduce glucose uptake in adipose cells and increase TNFα production in peripheral monocytes. Inflammatory cytokines have a known detrimental effect on insulin resistance. The aim of the present study was to explore the role of testosterone in local cytokine production in visceral adipose tissue from women of reproductive age. DESIGN: Twenty-four women 18-40 years old, undergoing elective abdominal surgery for benign and non-inflammatory conditions, were recruited for the study...
February 1, 2017: Molecular and Cellular Endocrinology
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
#14
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/28159556/activated-microglia-trigger-inflammasome-activation-and-lysosomal-destabilization-in-human-rpe-cells
#15
Christopher Nebel, Alexander Aslanidis, Khalid Rashid, Thomas Langmann
Activation of the innate immune system plays a major role in retinal degenerative diseases including age-related macular degeneration (AMD). In this study, we investigated whether reactive microglia trigger and sustain NLRP3 inflammasome activation in human retinal pigment epithelium (ARPE-19) cells. Specifically, we analyzed the potential of cell culture supernatants from lipopolysaccharide (LPS)-stimulated human microglia in combination with the lysosomal destabilization agent Leu-Leu-O-Me (LLOMe) to activate the inflammasome in ARPE-19 cells...
January 31, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28159496/androgen-deprivation-with-or-without-radiation-therapy-for-clinically-node-positive-prostate-cancer-lin-cc-gray-pj-jemal-a-efstathiou-ja-surveillance-and-health-services-research-program-intramural-research-american-cancer-society-atlanta-ga-ccl-aj-department
#16
Eggener Scott
BACKGROUND: Clinically lymph node-positive (cN+) prostate cancer (PCa) is an often-fatal disease. Its optimal management remains largely undefined given a lack of prospective, randomized data to inform practice. We sought to describe modern practice patterns in the management of cN+PCa and assess the effect of adding radiation therapy (RT) to androgen deprivation therapy (ADT) on survival using the National Cancer Data Base. METHODS: Patients with cN+PCa and without distant metastases diagnosed between 2004 and 2011 were included...
January 31, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28157237/mechanisms-underlying-the-cardiac-antifibrotic-effects-of-losartan-metabolites
#17
José Luis Miguel-Carrasco, Javier Beaumont, Gorka San José, María U Moreno, Begoña López, Arantxa González, Guillermo Zalba, Javier Díez, Ana Fortuño, Susana Ravassa
Excessive myocardial collagen deposition and cross-linking (CCL), a process regulated by lysyl oxidase (LOX), determines left ventricular (LV) stiffness and dysfunction. The angiotensin II antagonist losartan, metabolized to the EXP3179 and EXP3174 metabolites, reduces myocardial fibrosis and LV stiffness in hypertensive patients. Our aim was to investigate the differential influence of losartan metabolites on myocardial LOX and CCL in an experimental model of hypertension with myocardial fibrosis, and whether EXP3179 and EXP3174 modify LOX expression and activity in fibroblasts...
February 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28157229/multicomponent-droplet-evaporation-on-chemical-micro-patterned-surfaces
#18
Minghao He, Dong Liao, Huihe Qiu
The evaporation and dynamics of a multicomponent droplet on a heated chemical patterned surface were presented. Comparing to the evaporation process of a multicomponent droplet on a homogenous surface, it is found that the chemical patterned surface can not only enhance evaporation by elongating the contact line, but also change the evaporation process from three regimes for the homogenous surface including constant contact line (CCL) regime, constant contact angle (CCA) regime and mix mode (MM) to two regimes, i...
February 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28148302/blood-chemokine-profile-in-untreated-early-rheumatoid-arthritis-cxcl10-as-a-disease-activity-marker
#19
Jayesh M Pandya, Anna-Carin Lundell, Kerstin Andersson, Inger Nordström, Elke Theander, Anna Rudin
BACKGROUND: We have recently analyzed the profile of T-cell subtypes based on chemokine receptor expression in blood from untreated early rheumatoid arthritis (ueRA) patients compared to healthy controls (HC). Here, we compared the levels of the respective chemokines in blood plasma of ueRA patients with those of HC. We also studied the association of chemokine levels with the proportions of circulating T-cell subsets and the clinical disease activity. METHODS: Peripheral blood was obtained from 43 patients with ueRA satisfying the ACR 2010 criteria and who had not received any disease-modifying anti-rheumatic drugs (DMARD) or prednisolone, and from 14 sex- and age-matched HC...
February 2, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28146410/almond-skin-polyphenol-extract-inhibits-inflammation-and-promotes-lipolysis-in-differentiated-3t3-l1-adipocytes
#20
Wen-Chung Huang, Chi-Yuan Chen, Shu-Ju Wu
Studies have shown that polyphenols reduce the risk of inflammation-related diseases and upregulates energy expenditure in adipose tissue. Here, we investigated the mechanism of the anti-inflammatory and antiobesity effects of almond skin polyphenol extract (ASP) in differentiated 3T3-L1 adipocytes. The antioxidant effects of ASP were measured based on DPPH radical scavenging activity, Trolox equivalent antioxidant capacity, and total phenolic content. Differentiated 3T3-L1 cells were treated with ASP. Subsequently, lipolysis proteins and transcription factors of adipogenesis were measured...
February 2017: Journal of Medicinal Food
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