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https://www.readbyqxmd.com/read/28273571/detoxification-of-1-1-2-trichloroethane-to-ethene-in-a-bioreactor-co-culture-of-dehalogenimonas-and-dehalococcoides-mccartyi-strains
#1
Siti Hatijah Mortan, Lucía Martín-González, Teresa Vicent, Gloria Caminal, Ivonne Nijenhuis, Lorenz Adrian, Ernest Marco-Urrea
1,1,2-Trichloroethane (1,1,2-TCA) is a non-flammable organic solvent and common environmental contaminant in groundwater. Organohalide-respiring bacteria are key microorganisms to remediate 1,1,2-TCA because they can gain metabolic energy during its dechlorination under anaerobic conditions. However, all current isolates produce hazardous end products such as vinyl chloride, monochloroethane or 1,2-dichloroethane that accumulate in the medium. Here, we constructed a syntrophic co-culture of Dehalogenimonas and Dehalococcoides mccartyi strains to achieve complete detoxification of 1,1,2-TCA to ethene...
February 27, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28214067/nationwide-diabetes-related-lower-extremity-amputation-rates-in-secondary-care-treated-patients-with-diabetes-in-the-netherlands-dude-7
#2
Leonie Nijenhuis-Rosien, Steven Hans Hendriks, Nanne Kleefstra, Hendricus Jozef Gerardus Bilo, Gijs Wilhelmus Diederik Landman
AIMS: To estimate the annual amputation rate in all secondary care treated patients with diabetes in the Netherlands and specifically in patients known with diabetic retinopathy. METHODS: A nationwide population-based retrospective cohort study was performed including the years 2007-2011. Data of patients were retrieved from reimbursement registries for hospital care from a nationwide insurance database including codes for diabetes, retinopathy and amputation. Traumatic amputations were excluded...
April 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/28138829/metabolism-and-disposition-of-the-anticancer-quinolone-derivative-vosaroxin-a-novel-inhibitor-of-topoisomerase-ii
#3
C M Nijenhuis, L Lucas, H Rosing, A D R Huitema, M Mergui-Roelvink, G C Jamieson, J A Fox, D R Mould, J H M Schellens, J H Beijnen
Background Vosaroxin is a first-in-class anticancer quinolone derivative that is being investigated for patients with relapsed or refractory acute myeloid leukemia (AML). The primary objective of this study was to quantitatively determine the pharmacokinetics of vosaroxin and its metabolites in patients with advanced solid tumors. Methods This mass balance study investigated the pharmacokinetics (distribution, metabolism, and excretion) of vosaroxin in cancer patients after a single dose of 60 mg/m(2 14)C-vosaroxin, administered as short intravenous injection...
January 31, 2017: Investigational New Drugs
https://www.readbyqxmd.com/read/28063041/particle-bombardment-of-ex-vivo-skin-to-deliver-dna-and-express-proteins
#4
Ena Sokol, Miranda Nijenhuis, Klaas A Sjollema, Marcel F Jonkman, Hendri H Pas, Ben N G Giepmans
Particle bombardment of gold microparticles coated with plasmids, which are accelerated to high velocity, is used for transfection of cells within tissue. Using this method, cDNA encoding proteins of interest introduced into ex vivo living human skin enables studying of proteins of interest in real time. Here, technical aspects of particle bombardment of ex vivo skin are described using green fluorescent protein (GFP) as readout for efficiency. This method can be applied on numerous tissues, including in living model animals...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27934613/complete-blood-flow-obstruction-due-to-a-distally-embolised-edwards-sapien-valve-prosthesis
#5
Vincent J Nijenhuis, Martin J Swaans, Jurrien M Ten Berg
No abstract text is available yet for this article.
December 10, 2016: EuroIntervention
https://www.readbyqxmd.com/read/27897387/small-molecule-induced-and-cooperative-enzyme-assembly-on-a-14-3-3-scaffold
#6
Anniek den Hamer, Lenne J M Lemmens, Minke A D Nijenhuis, Christian Ottmann, Maarten Merkx, Tom F A de Greef, Luc Brunsveld
Scaffold proteins regulate cell signalling by promoting the proximity of putative interaction partners. Although they are frequently applied in cellular settings, fundamental understanding of them in terms of, amongst other factors, quantitative parameters has been lagging behind. Here we present a scaffold protein platform that is based on the native 14-3-3 dimeric protein and is controllable through the action of a small-molecule compound, thus permitting study in an in vitro setting and mathematical description...
February 1, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/27895156/sildenafil-prevents-podocyte-injury-via-ppar-%C3%AE-mediated-trpc6-inhibition
#7
Ramon Sonneveld, Joost G Hoenderop, Andrea M Isidori, Carole Henique, Henry B Dijkman, Jo H Berden, Pierre-Louis Tharaux, Johan van der Vlag, Tom Nijenhuis
Transient receptor potential channel C6 (TRPC6) gain-of-function mutations and increased TRPC6 expression in podocytes induce glomerular injury and proteinuria. Sildenafil reduces TRPC6 expression and activity in nonrenal cell types, although the mechanism is unknown. Peroxisome proliferator-activated receptor γ (PPAR-γ) is a downstream target of sildenafil in the cyclic guanosine monophosphate (cGMP)-activated protein kinase G (PKG) axis. PPAR-γ agonists, like pioglitazone, appear antiproteinuric. We hypothesized that sildenafil inhibits TRPC6 expression in podocytes through PPAR-γ-dependent mechanisms, thereby counteracting podocyte injury and proteinuria...
November 28, 2016: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/27817753/spearman-s-hypothesis-tested-comparing-saudi-arabian-children-and-adolescents-with-various-other-groups-of-children-and-adolescents-on-the-items-of-the-standard-progressive-matrices
#8
Jan Te NijenhuiS, Adel A Batterjee, Michael Van Den Hoek, Jüri Allik, Vladimir Sukhanovskiy
Spearman's hypothesis tested at the level of items states that differences between ethnic groups on the items of an IQ test are a function of the g loadings of these items, such that there are small differences between ethnic groups on items with low g loadings and large differences between ethnic groups on items with high g loadings; this has been confirmed in a limited number of studies. In this paper, Spearman's hypothesis was tested, comparing a group of Saudi children and adolescents (N=3209) with other groups of children and adolescents from Denmark, Cyprus, Croatia, Bosnia, South Africa, Estonia, Ukraine, Ireland, Russia and Chile (total N=9333)...
November 7, 2016: Journal of Biosocial Science
https://www.readbyqxmd.com/read/27802168/control-of-apico-basal-epithelial-polarity-by-the-microtubule-minus-end-binding-protein-camsap3-and-spectraplakin-acf7
#9
Ivar Noordstra, Qingyang Liu, Wilco Nijenhuis, Shasha Hua, Kai Jiang, Matthijs Baars, Sanne Remmelzwaal, Maud Martin, Lukas C Kapitein, Anna Akhmanova
The microtubule cytoskeleton regulates cell polarity by spatially organizing membrane trafficking and signaling processes. In epithelial cells, microtubules form parallel arrays aligned along the apico-basal axis, and recent work has demonstrated that the members of CAMSAP/Patronin family control apical tethering of microtubule minus ends. Here, we show that in mammalian intestinal epithelial cells, the spectraplakin ACF7 (also known as MACF1) specifically binds to CAMSAP3 and is required for the apical localization of CAMSAP3-decorated microtubule minus ends...
November 15, 2016: Journal of Cell Science
https://www.readbyqxmd.com/read/27769846/a-plec-isoform-identified-in-skin-muscle-and-heart
#10
Katarzyna B Gostyńska, Henny Lemmink, Jeroen Bremer, Hendri H Pas, Miranda Nijenhuis, Peter C van den Akker, Richard J Sinke, Marcel F Jonkman, Anna M G Pasmooij
No abstract text is available yet for this article.
October 18, 2016: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/27732925/echocardiographic-pulmonary-hypertension-probability-is-associated-with-clinical-outcomes-after-transcatheter-aortic-valve-implantation
#11
V J Nijenhuis, M P Huitema, V M M Vorselaars, M J Swaans, T de Kroon, J A S van der Heyden, B J W M Rensing, R Heijmen, J M Ten Berg, M C Post
AIMS: Pulmonary hypertension (PH) is associated with mortality after transcatheter aortic valve implantation (TAVI). However, diagnosis based on tricuspid regurgitant velocity (TRV) is often inaccurate and unreliable. The updated PH guidelines introduced a PH probability grading implementing additional PH signs on transthoracic echocardiography (TTE), from which we aimed to analyse its effects on clinical outcomes in patients undergoing TAVI. METHODS AND RESULTS: We included 591 consecutive patients (mean age 80...
December 15, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27526716/dual-carbon-bromine-stable-isotope-analysis-allows-distinguishing-transformation-pathways-of-ethylene-dibromide
#12
Kevin Kuntze, Anna Kozell, Hans H Richnow, Ludwik Halicz, Ivonne Nijenhuis, Faina Gelman
The present study investigated dual carbon-bromine isotope fractionation of the common groundwater contaminant ethylene dibromide (EDB) during chemical and biological transformations, including aerobic and anaerobic biodegradation, alkaline hydrolysis, Fenton-like degradation, debromination by Zn(0) and reduced corrinoids. Significantly different correlation of carbon and bromine isotope fractionation (ΛC/Br) was observed not only for the processes following different transformation pathways, but also for abiotic and biotic processes with, the presumed, same formal chemical degradation mechanism...
September 20, 2016: Environmental Science & Technology
https://www.readbyqxmd.com/read/27451056/origin-of-vc-only-plumes-from-naturally-enhanced-dechlorination-in-a-peat-rich-hydrogeologic-setting
#13
Maria Filippini, Alessandro Amorosi, Bruno Campo, Sara Herrero-Martìn, Ivonne Nijenhuis, Beth L Parker, Alessandro Gargini
The occurrence of vinyl chloride (VC) is often a main concern at sites contaminated with chlorinated solvents due to its high degree of toxicity and carcinogenicity. VC occurrence in aquifers is most often related to the degradation of higher chlorinated ethenes or ethanes and it is generally detected in plumes along with parent contaminants. However, specific combination of stratigraphic, hydrogeologic and geochemical conditions can enhance the degradation of parents and lead to the formation of plumes almost entirely composed of VC (i...
September 2016: Journal of Contaminant Hydrology
https://www.readbyqxmd.com/read/27365214/clinical-pharmacokinetics-of-vemurafenib-in-braf-mutated-melanoma-patients
#14
C M Nijenhuis, A D R Huitema, C Blank, J B A G Haanen, J V van Thienen, H Rosing, J H M Schellens, J H Beijnen
No abstract text is available yet for this article.
January 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/27351581/stable-isotope-fractionation-concepts-for-characterizing-biotransformation-of-organohalides
#15
Ivonne Nijenhuis, Hans H Richnow
Recent development allows multi-element compound-specific isotope analysis of D, (13)C, (37)Cl and (81)Br for characterizing the degradation pathways of halogenated organic substances in the environment. The apparent kinetic isotope effect (AKIE) obtained in (bio)degradation experiments yields information on the chemical mechanism of the bond cleavage. In biochemical reactions, rate limitation such as uptake into cells, substrate transport in cells and binding to enzymes as well as equilibrium isotope effects (EIE) are modifying the observed isotope fractionation associated with the bond cleavage reactions, thus, complicating mechanistic interpretation of isotope effect...
June 25, 2016: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/27314420/reductive-dechlorination-in-recalcitrant-sources-of-chloroethenes-in-the-transition-zone-between-aquifers-and-aquitards
#16
Diana Puigserver, Jofre Herrero, Mònica Torres, Amparo Cortés, Ivonne Nijenhuis, Kevin Kuntze, Beth L Parker, José M Carmona
In the transition zone between aquifers and basal aquitards, the perchloroethene pools at an early time in their evolution are more recalcitrant than those elsewhere in the aquifer. The aim of this study is to demonstrate that the biodegradation of chloroethenes from aged pools (i.e., pools after decades of continuous groundwater flushing and dissolution) of perchloroethene is favored in the transition zone. A field site was selected where an aged pool exists at the bottom of a transition zone. Two boreholes were drilled to obtain sediment and groundwater samples to perform chemical, isotopic, molecular, and clone library analyses and microcosm experiments...
September 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27236532/quantification-of-vosaroxin-and-its-metabolites-n-desmethylvosaroxin-and-o-desmethylvosaroxin-in-human-plasma-and-urine-using-high-performance-liquid-chromatography-tandem-mass-spectrometry
#17
C M Nijenhuis, L Lucas, H Rosing, G Jamieson, J A Fox, J H M Schellens, J H Beijnen
Vosaroxin is a first-in-class anticancer quinolone derivative topoisomerase II inhibitor that is currently in development in combination with cytarabine for the treatment of acute myeloid leukemia (AML). To investigate vosaroxin pharmacokinetics (PK) in patients, liquid chromatography tandem mass spectrometry (LC-MS/MS) assays to quantify vosaroxin and the two metabolites N-desmethylvosaroxin and O-desmethylvosaroxin in human plasma and urine were developed and validated. Immediately after collection the samples were stored at -80°C...
August 1, 2016: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/27225185/is-it-trauma-or-fantasy-based-comparing-dissociative-identity-disorder-post-traumatic-stress-disorder-simulators-and-controls
#18
E M Vissia, M E Giesen, S Chalavi, E R S Nijenhuis, N Draijer, B L Brand, A A T S Reinders
OBJECTIVE: The Trauma Model of dissociative identity disorder (DID) posits that DID is etiologically related to chronic neglect and physical and/or sexual abuse in childhood. In contrast, the Fantasy Model posits that DID can be simulated and is mediated by high suggestibility, fantasy proneness, and sociocultural influences. To date, these two models have not been jointly tested in individuals with DID in an empirical manner. METHOD: This study included matched groups [patients (n = 33) and controls (n = 32)] that were compared on psychological Trauma and Fantasy measures: diagnosed genuine DID (DID-G, n = 17), DID-simulating healthy controls (DID-S, n = 16), individuals with post-traumatic stress disorder (PTSD, n = 16), and healthy controls (HC, n = 16)...
August 2016: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/27221729/pharmacokinetics-and-excretion-of-14-c-omacetaxine-in-patients-with-advanced-solid-tumors
#19
Cynthia M Nijenhuis, Edward Hellriegel, Jos H Beijnen, Diane Hershock, Alwin D R Huitema, Luc Lucas, Marja Mergui-Roelvink, Mihaela Munteanu, Laura Rabinovich-Guilatt, Philmore Robertson, Hilde Rosing, Ofer Spiegelstein, Jan H M Schellens
Background Omacetaxine mepesuccinate is indicated in adults with chronic myeloid leukemia resistant and/or intolerant to ≥ 2 tyrosine kinase inhibitor treatments. This phase I study assessed the disposition, elimination, and safety of (14)C-omacetaxine in patients with solid tumors. Methods The study comprised a 7-days pharmacokinetic assessment followed by a treatment period of ≤ six 28-days cycles. A single subcutaneous dose of 1.25 mg/m(2) (14)C-omacetaxine was administered to six patients. Blood, urine, and feces were collected through 168 h or until radioactivity excreted within 24 h was <1 % of the dose...
October 2016: Investigational New Drugs
https://www.readbyqxmd.com/read/27186889/regulatory-aspects-of-human-radiolabeled-mass-balance-studies-in-oncology-concise-review
#20
C M Nijenhuis, J H M Schellens, J H Beijnen
Human radiolabeled mass balance studies are performed to obtain information about the absorption, distribution, metabolism, and excretion of a drug in development. The main goals are to determine the route of elimination and major metabolic pathways. This review provides an overview of the current regulatory guidelines concerning human radiolabeled mass balance studies and discusses scientific trends seen in the last decade with a focus on mass balance studies of anticancer drugs. This paper also provides an overview of mass balance studies of anticancer agents that were executed in the last 10 years...
May 2016: Drug Metabolism Reviews
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