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Jan burger

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https://www.readbyqxmd.com/read/28801717/vitamin-b6-is-essential-for-serine-de-novo-biosynthesis
#1
Rúben J Ramos, Mia L Pras-Raves, Johan Gerrits, Maria van der Ham, Marcel Willemsen, Hubertus Prinsen, Boudewijn Burgering, Judith J Jans, Nanda M Verhoeven-Duif
Pyridoxal 5'-phosphate (PLP), the metabolically active form of vitamin B6, plays an essential role in brain metabolism as a cofactor in numerous enzyme reactions. PLP deficiency in brain, either genetic or acquired, results in severe drug-resistant seizures that respond to vitamin B6 supplementation. The pathogenesis of vitamin B6 deficiency is largely unknown. To shed more light on the metabolic consequences of vitamin B6 deficiency in brain, we performed untargeted metabolomics in vitamin B6-deprived Neuro-2a cells...
August 11, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28800385/in-vivo-and-in-vitro-palatability-testing-of-a-new-paediatric-formulation-of-valaciclovir
#2
Diane E T Bastiaans, Laura I Immohr, Gertrude G Zeinstra, Riet Strik-Albers, Miriam Pein-Hackelbusch, Michiel van der Flier, Anton F J de Haan, Jaap Jan Boelens, Arjan C Lankester, David M Burger, Adilia Warris
AIM: The palatability of a new paediatric formulation of valaciclovir was assessed in children and their parents: non-inferiority of the new paediatric formulation (test formulation) compared to the reference formulation was investigated. METHODS: In vivo palatability testing was performed in a randomized, two-period, multicentre, cross-over study. Children and their parents scored the liking of the new paediatric valaciclovir formulation and the reference formulation on a 100 mm visual analogue scale (VAS)...
August 11, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28798068/consolidation-treatment-with-lenalidomide-following-front-line-or-salvage-chemoimmunotherapy-in-chronic-lymphocytic-leukemia
#3
Paolo Strati, Michael J Keating, Jan A Burger, Susan M O'Brien, William G Wierda, Zeev Estrov, Gracy Zacharian, Alessandra Ferrajoli
No abstract text is available yet for this article.
August 10, 2017: Haematologica
https://www.readbyqxmd.com/read/28756902/bevacizumab-for-advanced-cervical-cancer-final-overall-survival-and-adverse-event-analysis-of-a-randomised-controlled-open-label-phase-3-trial-gynecologic-oncology-group-240
#4
Krishnansu S Tewari, Michael W Sill, Richard T Penson, Helen Huang, Lois M Ramondetta, Lisa M Landrum, Ana Oaknin, Thomas J Reid, Mario M Leitao, Helen E Michael, Philip J DiSaia, Larry J Copeland, William T Creasman, Frederick B Stehman, Mark F Brady, Robert A Burger, J Tate Thigpen, Michael J Birrer, Steven E Waggoner, David H Moore, Katherine Y Look, Wui-Jin Koh, Bradley J Monk
BACKGROUND: On Aug 14, 2014, the US Food and Drug Administration approved the antiangiogenesis drug bevacizumab for women with advanced cervical cancer on the basis of improved overall survival (OS) after the second interim analysis (in 2012) of 271 deaths in the Gynecologic Oncology Group (GOG) 240 trial. In this study, we report the prespecified final analysis of the primary objectives, OS and adverse events. METHODS: In this randomised, controlled, open-label, phase 3 trial, we recruited patients with metastatic, persistent, or recurrent cervical carcinoma from 81 centres in the USA, Canada, and Spain...
July 27, 2017: Lancet
https://www.readbyqxmd.com/read/28751563/calreticulin-as-a-novel-b-cell-receptor-antigen-in-chronic-lymphocytic-leukemia
#5
Elisa Ten Hacken, Maria Gounari, Jaap Willem Back, Ekaterina Shimanovskaya, Lydia Scarfo, Ekaterina Kim, Jared Burks, Maurilio Ponzoni, Giuseppe Alvise Ramirez, William G Wierda, Zeev Estrov, Michael J Keating, Alessandra Ferrajoli, Kostas Stamatopoulos, Paolo Ghia, Jan A Burger
No abstract text is available yet for this article.
July 27, 2017: Haematologica
https://www.readbyqxmd.com/read/28751558/characterization-of-atrial-fibrillation-adverse-events-reported-in-ibrutinib-randomized-controlled-registration-trials
#6
Jennifer R Brown, Javid Moslehi, Susan O' Brien, Paolo Ghia, Peter Hillmen, Florence Cymbalista, Tait D Shanafelt, Graeme Fraser, Simon Rule, Thomas J Kipps, Steven Coutre, Marie-Sarah Dilhuydy, Paula Cramer, Alessandra Tedeschi, Ulrich Jaeger, Martin Dreyling, John C Byrd, Angela Howes, Michael Todd, Jessica Vermeulen, Danelle F James, Fong Clow, Lori Styles, Rudy Valentino, Mark Wildgust, Michelle Mahler, Jan A Burger
The first-in-class Bruton's tyrosine kinase inhibitor ibrutinib has proven clinical benefit in B-cell malignancies; however, atrial fibrillation has been reported in 6-16% of ibrutinib patients. We pooled data from 1505 chronic lymphocytic leukemia and mantle cell lymphoma patients enrolled in four large, randomized, controlled studies to characterize atrial fibrillation with ibrutinib and its management. Atrial fibrillation incidence was 6.5% (95% CI: 4.8, 8.5) for ibrutinib at 16.6-months (vs. 1.6% [95% CI: 0...
July 27, 2017: Haematologica
https://www.readbyqxmd.com/read/28722170/activation-of-the-b-cell-receptor-successively-activates-nf-%C3%AE%C2%BAb-and-stat3-in-chronic-lymphocytic-leukemia-cells
#7
Uri Rozovski, David M Harris, Ping Li, Zhiming Liu, Preetesh Jain, Ivo Veletic, Alessandra Ferrajoli, Jan Burger, Philip Thompson, Nitin Jain, William Wierda, Michael J Keating, Zeev Estrov
In chronic lymphocytic leukemia (CLL) cells, both interleukin-6 (IL-6) and the B-cell receptor (BCR) activate Janus kinase 2 (JAK2) and induce the phosphorylation of signal transduction and activator of transcription 3 (STAT3) on tyrosine 705 residues. However, whereas IL-6 phosphorylates STAT3 within 15 minutes, stimulation of the BCR with anti-immunoglobulin M (IgM) antibodies phosphorylates STAT3 in 2-4 hours. Here we show that this process takes longer because it requires transcriptional activity of NF-κB...
July 19, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28715978/the-role-of-efflux-pumps-in-tuberculosis-treatment-and-their-promise-as-a-target-in-drug-development-unraveling-the-black-box
#8
Lindsey H M Te Brake, Gerjo J de Knegt, Jurriaan E de Steenwinkel, Teunis J P van Dam, David M Burger, Frans G M Russel, Reinout van Crevel, Jan B Koenderink, Rob E Aarnoutse
Insight into drug transport mechanisms is highly relevant to the efficacious treatment of tuberculosis (TB). Major problems in TB treatment are related to the transport of antituberculosis (anti-TB) drugs across human and mycobacterial membranes, affecting the concentrations of these drugs systemically and locally. Firstly, transporters located in the intestines, liver, and kidneys all determine the pharmacokinetics and pharmacodynamics of anti-TB drugs, with a high risk of drug-drug interactions in the setting of concurrent use of antimycobacterial, antiretroviral, and antidiabetic agents...
July 17, 2017: Annual Review of Pharmacology and Toxicology
https://www.readbyqxmd.com/read/28708284/cd20-specific-immunoligands-engaging-nkg2d-enhance-%C3%AE-%C3%AE-t-cell-mediated-lysis-of-lymphoma-cells
#9
Matthias Peipp, Daniela Wesch, Hans-Heinrich Oberg, Sebastian Lutz, Anja Muskulus, Jan G J van de Winkel, Paul W H I Parren, Renate Burger, Andreas Humpe, Dieter Kabelitz, Martin Gramatzki, Christian Kellner
Human γδ T cells are innate-like T cells which are able to kill a broad range of tumor cells and thus may have potential for cancer immunotherapy. The activating receptor natural killer group 2 member D (NKG2D) plays a key role in regulating immune responses driven by γδ T cells. Here, we explored whether recombinant immunoligands consisting of a CD20 single-chain fragment variable (scFv) linked to a NKG2D ligand, either MHC class I chain-related protein A (MICA) or UL16 binding protein 2 (ULBP2), could be employed to engage γδ T cells for tumor cell killing...
July 14, 2017: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/28696897/polymorphisms-of-xenobiotic-metabolizing-enzymes-in-bladder-cancer-patients-of-the-semmelweis-university-budapest-hungary
#10
Dörte Ebbinghaus, Gergely Bánfi, Silvia Selinski, Meinolf Blaszkewicz, Hannah Bürger, Jan G Hengstler, Péter Nyirády, Klaus Golka
Polymorphic xenobiotic metabolizing enzymes such as N-acetyltransferase 2 (NAT2) or glutathione S-transferase M1 (GSTM1) are known to modulate bladder cancer risk. As no apparent data were available from Hungary, a former member of the eastern European economic organization, a study was performed in Budapest. In total, 182 bladder cancer cases and 78 cancer-free controls were investigated by questionnaire. Genotypes of NAT2, GSTM1, GSTT1, rs1058396 and rs17674580 were determined by standard methods. Current smokers' crude odds ratio (OR) (3...
July 11, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28696895/urinary-bladder-cancer-risk-factors-in-an-area-of-former-coal-iron-and-steel-industries-in-germany
#11
Eugen Krech, Silvia Selinski, Meinolf Blaszkewicz, Hannah Bürger, Thura Kadhum, Jan G Hengstler, Michael C Truß, Klaus Golka
This study was performed to investigate the frequency of bladder cancer in patients with an occupational history such as underground hard coal mining and/or painting after the structural change in the local industry. A total of 206 patients with bladder cancer and 207 controls were enlisted regarding occupational and nonoccupational bladder cancer risk factors by questionnaire. The phase II enzymes N-acetyltransferase 2 (NAT2), glutathione S-transferases M1 (GSTM1), and T1 (GSTT1) and the single nucleotide polymorphism (SNP) rs11892031[A/C] reported to be associated with bladder cancer in genome-wide association studies were genotyped...
July 11, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28670739/-cll-progression-after-one-cycle-of-fcr-richter-s-transformation-versus-ebv-associated-lympho-proliferation
#12
Preetesh Jain, Jan Burger, Joseph D Khoury
No abstract text is available yet for this article.
July 3, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28665037/prevalence-of-potentially-serious-drug-drug-interactions-among-south-african-elderly-private-health-sector-patients-using-the-mimica-matanovi%C3%A4-vlahovi%C3%A4-pal%C3%A4-evski-protocol
#13
Julandi A van Heerden, Johanita R Burger, Jan J Gerber, Vera Vlahović-Palčevski
OBJECTIVES: To determine the prevalence of potentially serious drug-drug interactions (DDIs) and their relationship with gender and age, among elderly in South Africa. METHODS: A cross-sectional study was conducted using pharmaceutical claims data for 2013, for a total of 103 420 medical scheme beneficiaries' ≥65 years. All medications dispensed within one calendar month where the days' supply of medication dispensed overlapped, were grouped as one prescription...
June 30, 2017: International Journal of Pharmacy Practice
https://www.readbyqxmd.com/read/28646116/tonic-b-cell-receptor-signaling-in-diffuse-large-b-cell-lymphoma
#14
Ondrej Havranek, Jingda Xu, Stefan Köhrer, Zhiqiang Wang, Lisa Becker, Justin M Comer, Jared Henderson, Wencai Ma, John Man Chun Ma, Jason R Westin, Dipanjan Ghosh, Nicholas Shinners, Luhong Sun, Allen F Yi, Anusha R Karri, Jan A Burger, Tomasz Zal, R Eric Davis
We used CRISPR/Cas9-mediated genomic modification to investigate B-cell receptor (BCR) signaling in cell lines of diffuse large B-cell lymphoma (DLBCL). Three manipulations that altered BCR genes without affecting surface BCR levels showed that BCR signaling differs between the germinal center B-cell (GCB) subtype, which is insensitive to BTK inhibition by ibrutinib, and the activated B-cell (ABC) subtype. Replacing antigen-binding BCR regions had no effect on BCR signaling in GCB-DLBCL lines, reflecting this subtype's exclusive use of tonic BCR signaling...
June 23, 2017: Blood
https://www.readbyqxmd.com/read/28498961/range-wide-snow-leopard-phylogeography-supports-three-subspecies
#15
Jan E Janecka, Jan E Janecka, Zhang Yu-Guang, Li Di-Qiang, Bariushaa Munkhtsog, Munkhtsog Bayaraa, Naranbaatar Galsandorj, Tshewang R Wangchuk, Dibesh Karmacharya, Thomas McCarthy, Juan Li, Lu Zhi, Kubanychbek Zhumabai Uulu, Ajay Gaur, Satish Kumar, B Kesav Kumar, Shafqat Hussain, Ghulam Muhammad, Matthew Jevit, Charlotte Hacker, Pamela Burger, Claudia Wultsch, Mary J Janecka, Kristofer Helgen, William J Murphy, Rodney Jackson
The snow leopard, Panthera uncia, is an elusive high-altitude specialist that inhabits vast, inaccessible habitat across Asia. We conducted the first range-wide genetic assessment of snow leopards based on noninvasive scat surveys. Thirty-three microsatellites were genotyped and a total of 683-bp of mitochondrial DNA sequenced in 70 individuals. Snow leopards exhibited low genetic diversity at microsatellites (AN = 5.8, HO = 0.433, HE = 0.568), virtually no mtDNA variation, and underwent a bottleneck in the Holocene (~8,000 years ago) coinciding with increased temperatures, precipitation, and upward treeline shift in the Tibetan Plateau...
May 4, 2017: Journal of Heredity
https://www.readbyqxmd.com/read/28397242/use-of-anticoagulants-and-antiplatelet-in-patients-with-chronic-lymphocytic-leukaemia-treated-with-single-agent-ibrutinib
#16
Jeffrey A Jones, Peter Hillmen, Steven Coutre, Constantine Tam, Richard R Furman, Paul M Barr, Stephen J Schuster, Thomas J Kipps, Ian W Flinn, Ulrich Jaeger, Jan A Burger, Mei Cheng, Joi Ninomoto, Danelle F James, John C Byrd, Susan M O'Brien
Bleeding events have been observed among a subgroup of chronic lymphocytic leukaemia (CLL) patients treated with ibrutinib. We analysed data from two studies of single-agent ibrutinib to better characterize bleeding events and pattern of anticoagulation and antiplatelet use. Among 327 ibrutinib-treated patients, concomitant anticoagulation (11%) or antiplatelet use (34%) was common, but major bleeding was infrequent (2%). Bleeding events were primarily grade 1, and infrequently (1%) led to discontinuation. Among 175 patients receiving concomitant anticoagulant or antiplatelet agents, 5 had major bleeding events (3%)...
April 10, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28373262/impact-of-ibrutinib-dose-adherence-on-therapeutic-efficacy-in-patients-with-previously-treated-cll-sll
#17
Paul M Barr, Jennifer R Brown, Peter Hillmen, Susan O'Brien, Jacqueline C Barrientos, Nishitha M Reddy, Steven Coutre, Stephen P Mulligan, Ulrich Jaeger, Richard R Furman, Florence Cymbalista, Marco Montillo, Claire Dearden, Tadeusz Robak, Carol Moreno, John M Pagel, Jan A Burger, Samuel Suzuki, Juthamas Sukbuntherng, George Cole, Danelle F James, John C Byrd
Ibrutinib, an oral inhibitor of Bruton's tyrosine kinase (BTK), at a once-daily dose of 420 mg achieved BTK active-site occupancy in patients with chronic lymphocytic leukemia (CLL)/small lymphocytic lymphoma (SLL) that was maintained at 24 hours. It is unknown if intermittent interruption of ibrutinib therapy contributes to altered clinical outcomes. We therefore evaluated the effect of ibrutinib dose adherence on patient outcomes in the phase 3 RESONATE trial. The overall mean dose intensity (DI) was 95% with median treatment duration of ∼9 months...
May 11, 2017: Blood
https://www.readbyqxmd.com/read/28370076/analytical-challenges-in-quantifying-abiraterone-with-lc-ms-ms-in-human-plasma
#18
Guillemette E Benoist, Eric van der Meulen, Floor J E Lubberman, Winald R Gerritsen, Tineke J Smilde, Jack A Schalken, Jan H Beumer, David M Burger, Nielka P van Erp
A method was developed and validated to quantify abiraterone in human plasma. During assay development several analytical challenges were encountered: limited stability in patient samples, adsorption to glass, co-elution with metabolites, and carry-over issues. Limited stability (2 h) was found for abiraterone in fresh plasma as well as whole blood at ambient temperature. When kept at 2-8 °C, abiraterone in plasma was stable for 24 h and in whole blood for 8 h. Adsorption of abiraterone to glass materials was addressed by using polypropylene throughout the method...
April 3, 2017: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/28284741/long-term-environmental-radioactive-contamination-of-europe-due-to-the-chernobyl-accident-results-of-the-joint-danube-survey-2013
#19
Franz Josef Maringer, Claudia Ackerl, Andreas Baumgartner, Christopher Burger-Scheidlin, Maria Kocadag, Johannes H Sterba, Michael Stietka, Jan Matthew Welch
In the course of the Joint Danube Survey 3 (JDS3), coordinated by the International Commission for the Protection of the Danube River (ICPDR), laboratory ships travelled 2375km down the Danube River engaging in sampling, processing and on-board analyses during the summer of 2013. The results of the radiometric analysis of (90)Sr, (137)Cs and natural radionuclides in recent riverbed sediment are presented. The activity concentrations of (90)Sr and (137)Cs in Danube sediments have been found below 100Bq/kg.
February 27, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28266239/guideline-on-the-diagnosis-and-treatment-of-primary-idiopathic-clubfoot
#20
Arnold T Besselaar, Ralph J B Sakkers, Hans A Schuppers, Melinda M E H Witbreuk, Elgun V C M Zeegers, Jan D Visser, Robert A Boekestijn, Sacha D Margés, M C Marieke Van der Steen, Koert N J Burger
- A delegation of 6 pediatric orthopedic surgeons from the Dutch Orthopedic Association (NOV) and 2 members of the board of the Dutch Parents' Association for children with clubfoot created the guideline "The diagnosis and treatment of primary idiopathic clubfeet" between April 2011 and February 2014. The development of the guideline was supported by a professional methodologist from the Dutch Knowledge Institute of Medical Specialists. This evidence-based guideline process was new and unique, in the sense that the process was initiated by a parents' association...
June 2017: Acta Orthopaedica
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