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https://www.readbyqxmd.com/read/28913930/accuracy-repeatability-and-interplatform-reproducibility-of-t1-quantification-methods-used-for-dce-mri-results-from-a-multicenter-phantom-study
#1
Octavia Bane, Stefanie J Hectors, Mathilde Wagner, Lori L Arlinghaus, Madhava P Aryal, Yue Cao, Thomas L Chenevert, Fiona Fennessy, Wei Huang, Nola M Hylton, Jayashree Kalpathy-Cramer, Kathryn E Keenan, Dariya I Malyarenko, Robert V Mulkern, David C Newitt, Stephen E Russek, Karl F Stupic, Alina Tudorica, Lisa J Wilmes, Thomas E Yankeelov, Yi-Fei Yen, Michael A Boss, Bachir Taouli
PURPOSE: To determine the in vitro accuracy, test-retest repeatability, and interplatform reproducibility of T1 quantification protocols used for dynamic contrast-enhanced MRI at 1.5 and 3 T. METHODS: A T1 phantom with 14 samples was imaged at eight centers with a common inversion-recovery spin-echo (IR-SE) protocol and a variable flip angle (VFA) protocol using seven flip angles, as well as site-specific protocols (VFA with different flip angles, variable repetition time, proton density, and Look-Locker inversion recovery)...
September 14, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28910759/multi-rate-acquisition-for-dead-time-reduction-in-magnetic-resonance-receivers-application-to-imaging-with-zero-echo-time
#2
Josip Marjanovic, Markus Weiger, Jonas Reber, David O Brunner, Benjamin E Dietrich, Bertram J Wilm, Romain Froidevaux, Klaas P Pruessmann
For magnetic resonance imaging of tissues with very short transverse relaxation times, radio-frequency excitation must be immediately followed by data acquisition with fast spatial encoding. In zero-echo-time (ZTE) imaging, excitation is performed while the readout gradient is already on, causing data loss due to an initial dead time. One major dead time contribution is the settling time of the filters involved in signal down-conversion. In this work, a multi-rate acquisition scheme is proposed to minimize dead time due to filtering...
September 8, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28902889/on-specimen-killing-in-the-era-of-conservation-crisis-a-quantitative-case-for-modernizing-taxonomy-and-biodiversity-inventories
#3
Patrick O Waeber, Charlie J Gardner, Wilson R Lourenço, Lucienne Wilmé
BACKGROUND TO THE WORK: For centuries taxonomy has relied on dead animal specimens, a practice that persists today despite the emergence of innovative biodiversity assessment methods. Taxonomists and conservationists are engaged in vigorous discussions over the necessity of killing animals for specimen sampling, but quantitative data on taxonomic trends and specimen sampling over time, which could inform these debates, are lacking. METHODS: We interrogated a long-term research database documenting 2,723 land vertebrate and 419 invertebrate taxa from Madagascar, and their associated specimens conserved in the major natural history museums...
2017: PloS One
https://www.readbyqxmd.com/read/28898190/renal-tumors-of-childhood-radiologic-pathologic-correlation-part-2-the-2nd-decade-from-the-radiologic-pathology-archives
#4
Ellen M Chung, Grant E Lattin, Kimberly E Fagen, Andrew M Kim, Michael A Pavio, Adam J Fehringer, Richard M Conran
Malignant renal tumors account for 7% of childhood cancers, and Wilms tumors are by far the most common-but not in older children and adolescents. Among individuals in the latter half of their 2nd decade of life, renal cell carcinoma (RCC) is more common than Wilms tumor. The histopathologic spectrum of RCCs in children differs from that in adults. The most common subtype of RCC in children and adolescents is Xp11.2 translocation RCC, which is distinguished by hyperattenuation at nonenhanced computed tomography, a defined capsule, and associated retroperitoneal lymphadenopathy...
September 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28894579/metanephric-adenoma-treated-with-laparoscopic-nephrectomy-a-case-report
#5
Yuta Takezawa, Kouji Izumi, Hiroko Ikeda, Taito Nakano, Hiroyuki Konaka, Atsushi Mizokami, Mikio Namiki
Metanephric adenoma is an uncommon benign renal tumor that occurs predominantly in adult females and rarely in children. Its histomorphology resembles that of epithelial Wilms' tumor and papillary renal cell carcinoma. From a diagnostic and therapeutic perspective, recognition of this entity is important as it has a more favorable clinical outcome compared with Wilms' tumor and renal cell carcinoma. Metanephric adenoma should not be treated with nephrectomy if the tumor size is small. However, preoperative diagnosis of this disease is extremely challenging...
September 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28893315/heterogeneous-drug-penetrance-of-veliparib-and-carboplatin-measured-in-triple-negative-breast-tumors
#6
Imke H Bartelink, Brendan Prideaux, Gregor Krings, Lisa Wilmes, Pei Rong Evelyn Lee, Pan Bo, Byron Hann, Jean-Philippe Coppé, Diane Heditsian, Lamorna Swigart-Brown, Ella F Jones, Sergey Magnitsky, Ron J Keizer, Niels de Vries, Hilde Rosing, Nela Pawlowska, Scott Thomas, Mallika Dhawan, Rahul Aggarwal, Pamela N Munster, Laura J Esserman, Weiming Ruan, Alan H B Wu, Douglas Yee, Véronique Dartois, Radojka M Savic, Denise M Wolf, Laura van 't Veer
BACKGROUND: Poly(ADP-ribose) polymerase inhibitors (PARPi), coupled to a DNA damaging agent is a promising approach to treating triple negative breast cancer (TNBC). However, not all patients respond; we hypothesize that non-response in some patients may be due to insufficient drug penetration. As a first step to testing this hypothesis, we quantified and visualized veliparib and carboplatin penetration in mouse xenograft TNBCs and patient blood samples. METHODS: MDA-MB-231, HCC70 or MDA-MB-436 human TNBC cells were implanted in 41 beige SCID mice...
September 11, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28890538/kidney-cancer-targeting-wilms-tumour
#7
Grant Otto
No abstract text is available yet for this article.
September 11, 2017: Nature Reviews. Nephrology
https://www.readbyqxmd.com/read/28889954/mirna-155-mediates-down-regulation-of-the-high-affinity-receptor-for-ige-via-toll-like-receptor-signaling
#8
Nicole Leib, Nadine Herrmann, Susanne Koch, Tim J Stroisch, Sylvia Schnautz, Helene Wilms, Thomas Bieber
miRNA-155 contributes to the inflammatory process in AD by regulating the expression of the high-affinity receptor for IgE (FcεRI) via its transcription factor PU.1. miRNA-155 may represent an interesting new target in AD therapy.
September 7, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28888857/modelling-plasticity-in-dendrites-from-single-cells-to-networks
#9
REVIEW
Jacopo Bono, Katharina A Wilmes, Claudia Clopath
One of the key questions in neuroscience is how our brain self-organises to efficiently process information. To answer this question, we need to understand the underlying mechanisms of plasticity and their role in shaping synaptic connectivity. Theoretical neuroscience typically investigates plasticity on the level of neural networks. Neural network models often consist of point neurons, completely neglecting neuronal morphology for reasons of simplicity. However, during the past decades it became increasingly clear that inputs are locally processed in the dendrites before they reach the cell body...
September 7, 2017: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/28881592/associations-between-lmo1-gene-polymorphisms-and-wilms-tumor-susceptibility
#10
Guo-Chang Liu, Zhen-Jian Zhuo, Shi-Bo Zhu, Jinhong Zhu, Wei Jia, Zhang Zhao, Jin-Hua Hu, Jing He, Feng-Hua Wang, Wen Fu
Wilms' tumor is the most common childhood renal malignancy. A genome-wide association study identified LIM domain only 1 (LMO1) as having oncogenic potential. We examined the associations between LMO1 gene polymorphisms and susceptibility to Wilms' tumor. In this hospital-based, case-control study, we recruited 145 children with Wilms' tumor and 531 cancer-free children. Four polymorphisms (rs110419 A>G, rs4758051 G>A, rs10840002 A>G and rs204938 A>G) were genotyped using Taqman methodology. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated to measure the associations between selected polymorphisms and Wilms' tumor susceptibility...
August 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28878596/nucleotide-transition-390c-t-in-the-wilms-tumor-1-gene-a-risk-factor-of-hypospadias
#11
Gergely Buglyó, Ágnes Magyar, Sándor Biró, István Csízy, Dániel Beyer, Kinga Molnár, Éva Oláh
INTRODUCTION: The gene Wilms' tumor 1 (WT1) encodes a unique transcription factor. Its defects are known to cause a wide range of complex genitourinary malformations and may contribute to non-syndromic forms of hypospadias. MATERIALS AND METHODS: We performed WT1 mutation analysis and copy number analysis of WT1-interacting protein in 13 Hungarian patients diagnosed with isolated hypospadias. RESULTS: Sequencing of WT1 revealed a high frequency of heterozygosity for transition 390C-T (5 heterozygotes out of 13 patients, including 2 brothers)...
August 2017: Current Urology
https://www.readbyqxmd.com/read/28869618/outcomes-following-autologous-hematopoietic-stem-cell-transplant-for-patients-with-relapsed-wilms-tumor-a-cibmtr-retrospective-analysis
#12
M H Malogolowkin, M T Hemmer, J Le-Rademacher, G A Hale, P A Metha, A R Smith, C Kitko, A Abraham, H Abdel-Azim, C Dandoy, M Angel Diaz, R P Gale, G Guilcher, R Hayashi, S Jodele, K A Kasow, M L MacMillian, M Thakar, B M Wirk, A Woolfrey, E L Thiel
Despite the marked improvement in the overall survival (OS) for patients diagnosed with Wilms' tumor (WT), the outcomes for those who experience relapse have remained disappointing. We describe the outcomes of 253 patients with relapsed WT who received high-dose chemotherapy (HDT) followed by autologous hematopoietic stem cell transplant (HCT) between 1990 and 2013, and were reported to the Center for International Blood and Marrow Transplantation Research. The 5-year estimates for event-free survival (EFS) and OS were 36% (95% confidence interval (CI); 29-43%) and 45% (95 CI; 38-51%), respectively...
September 4, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28867113/precision-medicine-and-pet-computed-tomography-in-pediatric-malignancies
#13
REVIEW
Yasemin Sanli, Ebru Yilmaz, Rathan M Subramaniam
Fluorine-18 fluorodeoxyglucose ((18)F-FDG) PET-computed tomography (CT) plays a significant role in diagnosis, staging, therapy selection, and therapy assessment of multiple pediatric malignancies and facilitating precision medicine delivery in pediatric patients. In patients with Hodgkin lymphoma, interim fludeoxyglucose (18)F-FDG PET/CT is highly sensitive and specific for predicting survival and multiple trials with FDG PET/CT-based adaptive therapies are currently ongoing. It is superior to iodine-131 metaiodobenzylguanidine ((131)I-MIBG) scintigraphy and bone scintigraphy for detecting metastases in neuroblastoma patients and sarcoma patients...
October 2017: PET Clinics
https://www.readbyqxmd.com/read/28862203/utility-of-cell-block-to-detect-malignancy-in-fluid-cytology-adjunct-or-necessity
#14
Sumedha Dey, Dipanwita Nag, Ayandip Nandi, Ranjana Bandyopadhyay
AIM OF THE STUDY: Cell block (CB) technique when supplemented with conventional smear, provides increased cellularity, preservation of architectural pattern with excellent morphology, and a clear background. We compare the utility of CB technique compared to conventional smear in detection of malignancy in serous effusions. MATERIALS AND METHODS: An institution-based observational and analytical study was carried out over 1 year on 50 patients with effusions. The residual amount of centrifuged deposit after preparation of conventional smear was mixed with 10% alcohol-formalin solution, and CBs were prepared...
July 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28859078/the-wagr-syndrome-gene-prrg4-is-a-functional-homologue-of-the-commissureless-axon-guidance-gene
#15
Elizabeth D Justice, Sarah J Barnum, Thomas Kidd
WAGR syndrome is characterized by Wilm's tumor, aniridia, genitourinary abnormalities and intellectual disabilities. WAGR is caused by a chromosomal deletion that includes the PAX6, WT1 and PRRG4 genes. PRRG4 is proposed to contribute to the autistic symptoms of WAGR syndrome, but the molecular function of PRRG4 genes remains unknown. The Drosophila commissureless (comm) gene encodes a short transmembrane protein characterized by PY motifs, features that are shared by the PRRG4 protein. Comm intercepts the Robo axon guidance receptor in the ER/Golgi and targets Robo for degradation, allowing commissural axons to cross the CNS midline...
August 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28859044/vincristine-irinotecan-and-bevacizumab-in-relapsed-wilms-tumor-with-diffuse-anaplasia
#16
Amalia Schiavetti, Giulia Varrasso, Paola Collini, Anna Clerico
The prognosis of relapsed Wilms tumor (WT) with diffuse anaplasia is dismal, therefore, novel therapeutic strategies need to be explored. We reported on 2 consecutive cases with relapsed anaplastic WT who presented a partial response after 2 courses of vincristine, irinotecan, and bevacizumab association. This regimen may have a role in the treatment of patients with anaplastic advanced WT.
August 30, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28859039/clinical-profile-and-outcome-of-influenza-a-h1n1-in-pediatric-oncology-patients-during-the-2015-outbreak-a-single-center-experience-from-northern-india
#17
Nishant Verma, Vishal Pooniya, Archana Kumar
BACKGROUND: Owing to their immunocompromised status, childhood cancer patients on chemotherapy are at a greater risk for Influenza infection and its associated complications. There is limited data available on the clinical profile and outcome of Influenza A/H1N1 in this subset of patients. METHODS: A retrospective study was performed of Influenza A/H1N1 cases diagnosed between January 2015 to December 2015 in the in-patients of Pediatric Oncology unit of a tertiary care hospital from Northern India...
August 30, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28859028/sinusoidal-obstruction-syndrome-during-chemotherapy-of-pediatric-cancers-and-its-successful-management-with-defibrotide
#18
Hande Kizilocak, Gürcan Dikme, Nihal Özdemir, Sebuh Kuruğoğlu, İbrahim Adaletli, Tülay Erkan, Tiraje Celkan
Sinusoidal obstruction syndrome (SOS) is a life-threatening complication generally occurring after hematopoietic stem cell transplantation. SOS after standard dose chemotherapy in malignancies is rare. Between the year 1995 and 2016, 414 patients were diagnosed with acute lymphoblastic leukemia and 113 patients were diagnosed with Wilms tumor in our institution. Among these patients, 4 patients with acute lymphoblastic leukemia (0.96%) and 2 patients with Wilms tumor (1.7%) developed SOS during treatment. SOS behaves like a local disseminated intravascular coagulation...
August 30, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28856717/filling-the-dead-time-gap-in-zero-echo-time-mri-principles-compared
#19
Romain Froidevaux, Markus Weiger, David O Brunner, Benjamin E Dietrich, Bertram J Wilm, Klaas P Pruessmann
PURPOSE: MRI of tissues with short coherence lifetimes T2 or T2* can be performed efficiently using zero echo time (ZTE) techniques such as algebraic ZTE, pointwise encoding time reduction with radial acquisition (PETRA), and water- and fat-suppressed proton projection MRI (WASPI). They share the principal challenge of recovering data in central k-space missed due to an initial radiofrequency dead time. The purpose of this study was to compare the three techniques directly, with a particular focus on their behavior in the presence of ultra-short-lived spins...
August 30, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28856407/ph-homeostasis-in-yeast-the-phosphate-perspective
#20
REVIEW
Elja Eskes, Marie-Anne Deprez, Tobias Wilms, Joris Winderickx
Recent research further clarified the molecular mechanisms that link nutrient signaling and pH homeostasis with the regulation of growth and survival of the budding yeast Saccharomyces cerevisiae. The central nutrient signaling kinases PKA, TORC1, and Sch9 are intimately associated to pH homeostasis, presumably allowing them to concert far-reaching phenotypical repercussions of nutritional cues. To exemplify such repercussions, we briefly describe consequences for phosphate uptake and signaling and outline interactions between phosphate homeostasis and the players involved in intra- and extracellular pH control...
August 30, 2017: Current Genetics
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