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Molenaar, p

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https://www.readbyqxmd.com/read/29339439/idh1-2-mutations-sensitize-acute-myeloid-leukemia-to-parp-inhibition-and-this-is-reversed-by-idh1-2-mutant-inhibitors
#1
Remco J Molenaar, Tomas Radivoyevitch, Yasunobu Nagata, Mohammed Khurshed, Bartlomiej Przychodzen, Hideki Makishima, Mingjiang Xu, Fonnet E Bleeker, Johanna W Wilmink, Hetty Carraway, Sudipto Mukherjee, Mikkael A Sekeres, Cornelis J F Van Noorden, Jaroslaw P Maciejewski
PURPOSE: Somatic mutations in IDH1/2 occur in ~20% of patients with myeloid neoplasms, including acute myeloid leukemia (AML). IDH1/2MUT enzymes produce D-2-hydroxyglutarate (D2HG), which associates with increases in DNA damage and improved responses to chemo/radiotherapy and PARP inhibitors in solid tumor cells. Whether this also holds true for IDH1/2MUT AML is not known. EXPERIMENTAL DESIGN: Well-characterized primary IDH1MUT, IDH2MUT and IDH1/2WT AML cells were analyzed for DNA damage and responses to daunorubicin, ionizing radiation and PARP inhibitors...
January 16, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29315439/autorefraction-versus-manifest-refraction-in-patients-with-keratoconus
#2
Nienke Soeters, Marc B Muijzer, Jurrian Molenaar, Daniel A Godefrooij, Robert P L Wisse
PURPOSE: To compare visual performance using autorefraction and manifest refraction assessments in patients with keratoconus and investigate whether autorefraction measurements lead to suboptimal visual performance. METHODS: Corrected distance visual acuity (CDVA) was measured in 90 eyes of 61 patients with keratoconus with both autorefraction and manifest refraction, in a random order. Maximum keratometry (Kmax), cone location, and wavefront aberration were determined with Scheimpflug tomography...
January 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29240007/alternative-fistula-risk-score-for-pancreatoduodenectomy-a-frs-design-and-international-external-validation
#3
Timothy H Mungroop, L Bengt van Rijssen, David van Klaveren, F Jasmijn Smits, Victor van Woerden, Ralph J Linnemann, Matteo de Pastena, Sjors Klompmaker, Giovanni Marchegiani, Brett L Ecker, Susan van Dieren, Bert Bonsing, Olivier R Busch, Ronald M van Dam, Joris Erdmann, Casper H van Eijck, Michael F Gerhards, Harry van Goor, Erwin van der Harst, Ignace H de Hingh, Koert P de Jong, Geert Kazemier, Misha Luyer, Awad Shamali, Salvatore Barbaro, Thomas Armstrong, Arjun Takhar, Zaed Hamady, Joost Klaase, Daan J Lips, I Quintus Molenaar, Vincent B Nieuwenhuijs, Coen Rupert, Hjalmar C van Santvoort, Joris J Scheepers, George P van der Schelling, Claudio Bassi, Charles M Vollmer, Ewout W Steyerberg, Mohammed Abu Hilal, Bas Groot Koerkamp, Marc G Besselink
OBJECTIVE: The aim of this study was to develop an alternative fistula risk score (a-FRS) for postoperative pancreatic fistula (POPF) after pancreatoduodenectomy, without blood loss as a predictor. BACKGROUND: Blood loss, one of the predictors of the original-FRS, was not a significant factor during 2 recent external validations. METHODS: The a-FRS was developed in 2 databases: the Dutch Pancreatic Cancer Audit (18 centers) and the University Hospital Southampton NHS...
December 12, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/29229122/use-of-imaging-during-symptomatic-follow-up-after-resection-of-pancreatic-ductal-adenocarcinoma
#4
Vincent P Groot, Lois A Daamen, Jeroen Hagendoorn, Inne H M Borel Rinkes, Hjalmar C van Santvoort, I Quintus Molenaar
BACKGROUND: Controversy exists whether follow-up after resection of pancreatic ductal adenocarcinoma (PDAC) should include standardized imaging for the detection of disease recurrence. The purpose of this study was to evaluate how often patients undergo imaging in a setting where routine imaging is not performed. Secondly, the pattern, timing, and treatment of recurrent PDAC were assessed. MATERIALS AND METHODS: This was a post hoc analysis of a prospective database of all consecutive patients undergoing pancreatic resection of PDAC between January 2011 and January 2015...
January 2018: Journal of Surgical Research
https://www.readbyqxmd.com/read/29225810/achieving-high-convection-volumes-in-postdilution-online-hemodiafiltration-a-prospective-multicenter-study
#5
Camiel L M de Roij van Zuijdewijn, Isabelle Chapdelaine, Menso J Nubé, Peter J Blankestijn, Michiel L Bots, Constantijn J A M Konings, Ton K Kremer Hovinga, Femke M Molenaar, Neelke C van der Weerd, Muriel P C Grooteman
Background. Available evidence suggests a reduced mortality risk for patients treated with high-volume postdilution hemodiafiltration (HDF) when compared with hemodialysis (HD) patients. As the magnitude of the convection volume depends on treatment-related factors rather than patient-related characteristics, we prospectively investigated whether a high convection volume (defined as ≥22 L/session) is feasible in the majority of patients (>75%). Methods. A multicenter study was performed in adult prevalent dialysis patients...
December 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/29104287/risk-of-developing-chronic-myeloid-neoplasms-in-well-differentiated-thyroid-cancer-patients-treated-with-radioactive-iodine
#6
R J Molenaar, C Pleyer, T Radivoyevitch, S Sidana, A Godley, A S Advani, A T Gerds, H E Carraway, M Kalaycio, A Nazha, D Adelstein, C Nasr, D Angelini, J P Maciejewski, N Majhail, M A Sekeres, S Mukherjee
Exposure to ionizing radiation increases the risk of myelodysplastic syndromes (MDS) and myeloproliferative neoplasms (MPN), but such risks are not known in well-differentiated thyroid cancer (WDTC) patients treated with radioactive iodine (RAI). A total of 148 215 WDTC patients were identified from Surveillance Epidemiology and End Results (SEER) registries between 1973 and 2014, of whom 54% underwent definitive thyroidectomy and 46% received adjuvant RAI. With a median follow-up of 6.6 years, 77 and 66 WDTC patients developed MDS and MPN, respectively...
November 6, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/29049355/aberrant-hepatic-lipid-storage-and-metabolism-in-canine-portosystemic-shunts
#7
Lindsay Van den Bossche, Vivien A C Schoonenberg, Iwan A Burgener, Louis C Penning, Ingrid M Schrall, Hedwig S Kruitwagen, Monique E van Wolferen, Guy C M Grinwis, Anne Kummeling, Jan Rothuizen, Jeroen F van Velzen, Nikolas Stathonikos, Martijn R Molenaar, Bernd J Helms, Jos F H M Brouwers, Bart Spee, Frank G van Steenbeek
Non-alcoholic fatty liver disease (NAFLD) is a poorly understood multifactorial pandemic disorder. One of the hallmarks of NAFLD, hepatic steatosis, is a common feature in canine congenital portosystemic shunts. The aim of this study was to gain detailed insight into the pathogenesis of steatosis in this large animal model. Hepatic lipid accumulation, gene-expression analysis and HPLC-MS of neutral lipids and phospholipids in extrahepatic (EHPSS) and intrahepatic portosystemic shunts (IHPSS) was compared to healthy control dogs...
2017: PloS One
https://www.readbyqxmd.com/read/29030347/extracellular-matrix-proteomics-reveals-interplay-of-aggrecan-and-aggrecanases-in-vascular-remodeling-of-stented-coronary-arteries
#8
Gonca Suna, Wojciech Wojakowski, Marc Lynch, Javier Barallobre-Barreiro, Xiaoke Yin, Ursula Mayr, Ferheen Baig, Ruifang Lu, Marika Fava, Robert Hayward, Chris Molenaar, Stephen J White, Tomasz Roleder, Krzysztof Milewski, Pawel Gasior, Piotr P Buszman, Pawel E Buszman, Marjan Jahangiri, Cathy Shanahan, Jonathan M Hill, Manuel Mayr
Background -Extracellular matrix (ECM) remodeling contributes to in-stent restenosis and thrombosis. Despite its important clinical implications little is known about ECM changes post-stent implantation. Methods -Bare-metal (BMS) and drug-eluting stents (DES) were implanted in pig coronary arteries with an overstretch under optical coherence tomography guidance. Stented segments were harvested 1, 3, 7, 14 and 28 days post-stenting for proteomics analysis of the media and neointima. Results -A total of 151 ECM and ECM-associated proteins were identified by mass spectrometry...
October 13, 2017: Circulation
https://www.readbyqxmd.com/read/29029985/clinical-and-pathological-outcomes-after-irreversible-electroporation-of-the-pancreas-using-two-parallel-plate-electrodes-a-porcine-model
#9
Steffi J E Rombouts, Willemijn P M van Dijck, Maarten W Nijkamp, Tyche C Derksen, Lodewijk A A Brosens, Frederik J H Hoogwater, Maarten S van Leeuwen, Inne H M Borel Rinkes, Richard van Hillegersberg, Fred H Wittkampf, Izaak Q Molenaar
BACKGROUND: Irreversible electroporation (IRE) by inserting needles around the tumor as treatment for locally advanced pancreatic cancer entails several disadvantages, such as incomplete ablation due to field inhomogeneity, technical difficulties in needle placement and a risk of pancreatic fistula development. This experimental study evaluates outcomes of IRE using paddles in a porcine model. METHODS: Six healthy pigs underwent laparotomy and were treated with 2 separate ablations (in head and tail of the pancreas)...
October 10, 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/28902799/current-strategies-for-detection-and-treatment-of-recurrence-of-pancreatic-ductal-adenocarcinoma-after-resection-a-nationwide-survey
#10
Vincent P Groot, Lois A Daamen, Jeroen Hagendoorn, Inne H M Borel Rinkes, Olivier R Busch, Hjalmar C van Santvoort, Marc G Besselink, I Quintus Molenaar
No abstract text is available yet for this article.
October 2017: Pancreas
https://www.readbyqxmd.com/read/28821555/p53-nongenotoxic-activation-and-mtorc1-inhibition-lead-to-effective-combination-for-neuroblastoma-therapy
#11
Myrthala Moreno-Smith, Anna Lakoma, Zaowen Chen, Ling Tao, Kathleen A Scorsone, Linda Schild, Kevin Aviles-Padilla, Rana Nikzad, Yankai Zhang, Rikhia Chakraborty, Jan J Molenaar, Sanjeev A Vasudevan, Vivien Sheehan, Eugene S Kim, Silke Paust, Jason M Shohet, Eveline Barbieri
Purpose: mTORC1 inhibitors are promising agents for neuroblastoma therapy; however, they have shown limited clinical activity as monotherapy, thus rational drug combinations need to be explored to improve efficacy. Importantly, neuroblastoma maintains both an active p53 and an aberrant mTOR signaling.Experimental Design: Using an orthotopic xenograft model and modulating p53 levels, we investigated the antitumor effects of the mTORC1 inhibitor temsirolimus in neuroblastoma expressing normal, decreased, or mutant p53, both as single agent and in combination with first- and second-generation MDM2 inhibitors to reactivate p53...
August 18, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28807245/portal-vein-ligation-versus-portal-vein-embolization-for-induction-of-hypertrophy-of-the-future-liver-remnant-a-systematic-review-and-meta-analysis
#12
REVIEW
C J Isfordink, M Samim, M N G J A Braat, A M Almalki, J Hagendoorn, I H M Borel Rinkes, I Q Molenaar
An important risk of major hepatic resection is postoperative liver failure, which is directly related to insufficient future liver remnant (FLR). Portal vein embolization (PVE) and portal vein ligation (PVL) can minimize this risk by inducing hypertrophy of the FLR. The aim of this systematic review and meta-analysis was to compare the efficacy and safety of PVE and PVL for FLR hypertrophy. A systematic search was conducted on the17th of January 2017. The methodological quality of the studies was assessed using the Oxford Critical Appraisal Skills Program for cohort studies...
September 2017: Surgical Oncology
https://www.readbyqxmd.com/read/28754367/nationwide-prospective-audit-of-pancreatic-surgery-design-accuracy-and-outcomes-of-the-dutch-pancreatic-cancer-audit
#13
L Bengt van Rijssen, Bas G Koerkamp, Maurice J Zwart, Bert A Bonsing, Koop Bosscha, Ronald M van Dam, Casper H van Eijck, Michael F Gerhards, Erwin van der Harst, Ignace H de Hingh, Koert P de Jong, Geert Kazemier, Joost Klaase, Cornelis J van Laarhoven, I Quintus Molenaar, Gijs A Patijn, Coen G Rupert, Hjalmar C van Santvoort, Joris J Scheepers, George P van der Schelling, Olivier R Busch, Marc G Besselink
BACKGROUND: Auditing is an important tool to identify practice variation and 'best practices'. The Dutch Pancreatic Cancer Audit is mandatory in all 18 Dutch centers for pancreatic surgery. METHODS: Performance indicators and case-mix factors were identified by a PubMed search for randomized controlled trials (RCT's) and large series in pancreatic surgery. In addition, data dictionaries of two national audits, three institutional databases, and the Dutch national cancer registry were evaluated...
October 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/28724751/tomo-seq-identifies-sox9-as-a-key-regulator-of-cardiac-fibrosis-during-ischemic-injury
#14
Grégory P A Lacraz, Jan Philipp Junker, Monika M Gladka, Bas Molenaar, Koen T Scholman, Marta Vigil-Garcia, Danielle Versteeg, Hesther de Ruiter, Marit W Vermunt, Menno P Creyghton, Manon M H Huibers, Nicolaas de Jonge, Alexander van Oudenaarden, Eva van Rooij
BACKGROUND: Cardiac ischemic injury induces a pathological remodeling response, which can ultimately lead to heart failure. Detailed mechanistic insights into molecular signaling pathways relevant for different aspects of cardiac remodeling will support the identification of novel therapeutic targets. METHODS: Although genome-wide transcriptome analysis on diseased tissues has greatly advanced our understanding of the regulatory networks that drive pathological changes in the heart, this approach has been disadvantaged by the fact that the signals are derived from tissue homogenates...
October 10, 2017: Circulation
https://www.readbyqxmd.com/read/28723307/nationwide-comprehensive-gastro-intestinal-cancer-cohorts-the-3p-initiative
#15
R R J Coebergh van den Braak, L B van Rijssen, J J van Kleef, G R Vink, M Berbee, M I van Berge Henegouwen, H J Bloemendal, M J Bruno, M C Burgmans, O R C Busch, P P L O Coene, V M H Coupé, J W T Dekker, C H J van Eijck, M A G Elferink, F L G Erdkamp, W M U van Grevenstein, J W B de Groot, N C T van Grieken, I H J T de Hingh, M C C M Hulshof, J N M Ijzermans, L Kwakkenbos, V E P P Lemmens, M Los, G A Meijer, I Q Molenaar, G A P Nieuwenhuijzen, M E de Noo, L V van de Poll-Franse, C J A Punt, R C Rietbroek, W W H Roeloffzen, T Rozema, J P Ruurda, J W van Sandick, A H W Schiphorst, H Schipper, P D Siersema, M Slingerland, D W Sommeijer, M C W Spaander, M A G Sprangers, H B A C Stockmann, M Strijker, G van Tienhoven, L M Timmermans, M L R Tjin-A-Ton, A M T van der Velden, M J Verhaar, H M Verkooijen, W J Vles, J M P G M de Vos-Geelen, J W Wilmink, D D E Zimmerman, M G H van Oijen, M Koopman, M G H Besselink, H W M van Laarhoven
BACKGROUND: The increasing sub-classification of cancer patients due to more detailed molecular classification of tumors, and limitations of current trial designs, require innovative research designs. We present the design, governance and current standing of three comprehensive nationwide cohorts including pancreatic, esophageal/gastric, and colorectal cancer patients (NCT02070146). Multidisciplinary collection of clinical data, tumor tissue, blood samples, and patient-reported outcome (PRO) measures with a nationwide coverage, provides the infrastructure for future and novel trial designs and facilitates research to improve outcomes of gastrointestinal cancer patients...
July 19, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28711246/temporal-and-spatial-heterogeneity-in-milk-and-immune-related-gene-expression-during-mammary-gland-involution-in-dairy-cows
#16
K Singh, C V C Phyn, M Reinsch, J M Dobson, K Oden, S R Davis, K Stelwagen, H V Henderson, A J Molenaar
The aim of this study was to investigate heterogeneity in tissue morphology, milk protein and immune-related gene expression, and apoptosis of epithelial cells in the lactating and involuting mammary glands of the dairy cow. Mammary tissue from different regions of the gland (alveolar, cisternal, and peripheral) was collected postmortem from nonpregnant, pasture-fed, Holstein-Friesian primiparous cows in mid-lactation that were killed at different time points postmilking: 0, 6, 12, 18, 24, 36, and 72 h (n = 6 per time point)...
September 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28674118/retinoblastoma-and-neuroblastoma-predisposition-and-surveillance
#17
REVIEW
Junne Kamihara, Franck Bourdeaut, William D Foulkes, Jan J Molenaar, Yaël P Mossé, Akira Nakagawara, Andreu Parareda, Sarah R Scollon, Kami Wolfe Schneider, Alison H Skalet, Lisa J States, Michael F Walsh, Lisa R Diller, Garrett M Brodeur
Retinoblastoma (RB) is the most common intraocular malignancy in childhood. Approximately 40% of retinoblastomas are hereditary and due to germline mutations in the RB1 gene. Children with hereditary RB are also at risk for developing a midline intracranial tumor, most commonly pineoblastoma. We recommend intensive ocular screening for patients with germline RB1 mutations for retinoblastoma as well as neuroimaging for pineoblastoma surveillance. There is an approximately 20% risk of developing second primary cancers among individuals with hereditary RB, higher among those who received radiotherapy for their primary RB tumors...
July 1, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28617157/vesicoureteral-reflux-in-kidney-transplantation
#18
Nina M Molenaar, Robert C Minnee, Frederike J Bemelman, Mirza M Idu
BACKGROUND: Vesicoureteral reflux (VUR) is frequently found after transplantation, but its impact on graft function, urine tract infection, and graft loss remains uncertain. Therefore our objective was to evaluate the effects of VUR on the outcome of renal transplantation. MATERIAL AND METHODS: We included 1008 adult renal transplant recipients of whom a 1-week posttransplant voiding cystourethrogram was available. Study end points included occurrence of bacteriuria, renal function, and graft survival...
June 2017: Progress in Transplantation
https://www.readbyqxmd.com/read/28574581/the-%C3%AE-3-adrenoceptor-agonist-mirabegron-increases-human-atrial-force-through-%C3%AE-1-adrenoceptors-an-indirect-mechanism
#19
Weilan Mo, Martin C Michel, Xiang Wen Lee, Alberto J Kaumann, Peter Molenaar
BACKGROUND AND PURPOSE: Mirabegron has been classified as a β3 -adrenoceptor agonist approved for overactive bladder syndrome. We investigated possible cardiac effects of mirabegron in the absence or presence of β-adrenoceptor subtype antagonists. In view of its phenylethanolamine structure, we investigated whether mirabegron has indirect sympathomimetic activity by using neuronal uptake blockers. EXPERIMENTAL APPROACH: Right atrial trabeculae, from non-failing hearts, were paced and contractile force measured at 37°C...
August 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28467784/in-silico-gene-expression-analysis-reveals-glycolysis-and-acetate-anaplerosis-in-idh1-wild-type-glioma-and-lactate-and-glutamate-anaplerosis-in-idh1-mutated-glioma
#20
Mohammed Khurshed, Remco J Molenaar, Krissie Lenting, William P Leenders, Cornelis J F van Noorden
Hotspot mutations in isocitrate dehydrogenase 1 (IDH1) initiate low-grade glioma and secondary glioblastoma and induce a neomorphic activity that converts α-ketoglutarate (α-KG) to the oncometabolite D-2-hydroxyglutarate (D-2-HG). It causes metabolic rewiring that is not fully understood. We investigated the effects of IDH1 mutations (IDH1MUT) on expression of genes that encode for metabolic enzymes by data mining The Cancer Genome Atlas. We analyzed 112 IDH1 wild-type (IDH1WT) versus 399 IDH1MUT low-grade glioma and 157 IDH1WT versus 9 IDH1MUT glioblastoma samples...
July 25, 2017: Oncotarget
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