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https://www.readbyqxmd.com/read/28218232/corrigendum-thz1-targeting-cdk7-suppresses-stat-transcriptional-activity-and-sensitizes-t-cell-lymphomas-to-bcl2-inhibitors
#1
Florencia Cayrol, Pannee Praditsuktavorn, Tharu M Fernando, Nicholas Kwiatkowski, Rossella Marullo, M Nieves Calvo-Vidal, Jude Phillip, Benet Pera, Shao Ning Yang, Kaipol Takpradit, Lidia Roman, Marcello Gaudiano, Ramona Crescenzo, Jia Ruan, Giorgio Inghirami, Tinghu Zhang, Graciela Cremaschi, Nathanael S Gray, Leandro Cerchietti
No abstract text is available yet for this article.
February 20, 2017: Nature Communications
https://www.readbyqxmd.com/read/28215259/reduced-afferent-induced-facilitation-of-primary-motor-cortex-excitability-in-restless-legs-syndrome
#2
P Bocquillon, C Charley-Monaca, E Houdayer, A Marques, A Kwiatkowski, P Derambure, H Devanne
Restless legs syndrome (RLS) is characterized by the association of an urge to move, and vesperal or nocturnal sensory symptoms; it is frequently associated with periodic limb movements. Evidence from imaging and electrophysiological studies suggests that RLS is linked to changes in sensorimotor integration. Nevertheless, the underlying mechanisms have not been characterized, and the cortical origin has yet to be confirmed. The objective of the present study was to establish whether or not sensorimotor integration in RLS patients is impaired in the evening...
February 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28214367/population-genetic-structure-and-adaptation-of-malaria-parasites-on-the-edge-of-endemic-distribution
#3
Craig W Duffy, Hampate Ba, Samuel Assefa, Ambroise D Ahouidi, Yacine B Deh, Abderahmane Tandia, Freja C M Kirsebom, Dominic P Kwiatkowski, David J Conway
To determine whether the major human malaria parasite Plasmodium falciparum exhibits fragmented population structure or local adaptation at the northern limit of its African distribution where the dry Sahel zone meets the Sahara, samples were collected from diverse locations within Mauritania over a range of ~ 1000 kilometres. Microsatellite genotypes were obtained for 203 clinical infection samples from eight locations, and Illumina paired-end sequences were obtained to yield high coverage genome-wide single nucleotide polymorphism (SNP) data for 65 clinical infection samples from four locations...
February 18, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28212895/the-influence-of-enteral-obestatin-administration-to-suckling-rats-on-intestinal-contractility
#4
M Słupecka, P Grzesiak, J Kwiatkowski, M Gajewska, A Kuwahara, I Kato, J Woliński
This study investigated the effect of enteral administration of obestatin on the contractility of whole-thickness preparations of duodenum and middle jejunum, as well as on the morphology of the enteric nervous system (ENS). Suckling rats were assigned to 3 groups (n=12) treated with: C- saline solution; LO- obestatin (125 nmol/kg b.wt); HO-obestatin (250 nmol/kg b.wt). Saline solution or obestatin were administered twice daily, from the 14(th) to the 21(st) day of life. Sections were studied in an organ bath, for isometric recording in the presence of acetylocholine (ACh), atropine (ATR) and tetradotoxin (TTX)...
February 14, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28181482/small-genomic-insertions-form-enhancers-that-misregulate-oncogenes
#5
Brian J Abraham, Denes Hnisz, Abraham S Weintraub, Nicholas Kwiatkowski, Charles H Li, Zhaodong Li, Nina Weichert-Leahey, Sunniyat Rahman, Yu Liu, Julia Etchin, Benshang Li, Shuhong Shen, Tong Ihn Lee, Jinghui Zhang, A Thomas Look, Marc R Mansour, Richard A Young
The non-coding regions of tumour cell genomes harbour a considerable fraction of total DNA sequence variation, but the functional contribution of these variants to tumorigenesis is ill-defined. Among these non-coding variants, somatic insertions are among the least well characterized due to challenges with interpreting short-read DNA sequences. Here, using a combination of Chip-seq to enrich enhancer DNA and a computational approach with multiple DNA alignment procedures, we identify enhancer-associated small insertion variants...
February 9, 2017: Nature Communications
https://www.readbyqxmd.com/read/28176890/contextualizing-the-relevance-of-basic-sciences-small-group-simulation-with-debrief-for-first-and-second-year-medical-students-in-an-integrated-curriculum
#6
Samara B Ginzburg, Judith Brenner, Michael Cassara, Thomas Kwiatkowski, Joanne M Willey
AIM: There has been a call for increased integration of basic and clinical sciences during preclinical years of undergraduate medical education. Despite the recognition that clinical simulation is an effective pedagogical tool, little has been reported on its use to demonstrate the relevance of basic science principles to the practice of clinical medicine. We hypothesized that simulation with an integrated science and clinical debrief used with early learners would illustrate the importance of basic science principles in clinical diagnosis and management of patients...
2017: Advances in Medical Education and Practice
https://www.readbyqxmd.com/read/28171863/a-retrospective-study-on-the-onset-of-menopause-after-chemotherapy-analysis-of-data-extracted-from-the-jean-perrin-comprehensive-cancer-center-database-concerning-345-young-breast-cancer-patients-diagnosed-between-1994-and-2012
#7
Joyce Dohou, Marie-Ange Mouret-Reynier, Fabrice Kwiatkowski, Marie Arbre, Pauline Herviou, Mélanie Pouget, Catherine Abrial, Frédérique Penault-Llorca
OBJECTIVE: Young breast cancer (BC) patients receiving chemotherapy are at risk of chemotherapy-induced menopause (CIM). We sought to define the incidence rate of premature menopause after chemotherapy and to retrospectively investigate factors related to the onset of menopause. METHODS: We identified BC patients who had received chemotherapy at the Cancer Center (Centre Jean-Perrin). We selected premenopausal women aged between 18 and 50 years at the moment of diagnosis who received chemotherapy between 1994 and 2012...
February 8, 2017: Oncology
https://www.readbyqxmd.com/read/28155826/comprehensive-treatment-of-the-multiply-injured-patient-a-case-study
#8
Piotr Piekarczyk, Krzysztof Kwiatkowski, Konrad Borcz, Krzysztof Piątkowski, Robert Skowronek
BACKGROUND: We describe the case of a 35-year-old man who suffered multiple organ injuries following a traffic accident. CASE REPORT: A total of 47 fractures were diagnosed in that patient. He was treated in stages according to the principles of Damage Control Orthopedics. He underwent 6 sessions of surgery with 23 surgical approaches. A follow-up examination at 12 months post injury found bone union of all fractures. The clinical and functional outcome of treatment was good as joint mobility was similar to the pre-accident status and the patient returned to work...
March 23, 2016: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28147693/inverse-collimated-proton-radiography-for-imaging-thin-materials
#9
Matthew S Freeman, Jason Allison, Malcolm Andrews, Eric Ferm, John J Goett, Kris Kwiatkowski, Julian Lopez, Fesseha Mariam, Mark Marr-Lyon, Michael Martinez, Jason Medina, Patrick Medina, Frank E Merrill, Chris L Morris, Matthew M Murray, Paul Nedrow, Levi P Neukirch, Katherine Prestridge, Paolo Rigg, Alexander Saunders, Tamsen Schurman, Amy Tainter, Frans Trouw, Dale Tupa, Josh Tybo, Wendy Vogan-McNeil, Carl Wilde
Relativistic, magnetically focused proton radiography was invented at Los Alamos National Laboratory using the 800 MeV LANSCE beam and is inherently well-suited to imaging dense objects, at areal densities >20 g cm(-2). However, if the unscattered portion of the transmitted beam is removed at the Fourier plane through inverse-collimation, this system becomes highly sensitive to very thin media, of areal densities <100 mg cm(-2). Here, this inverse-collimation scheme is described in detail and demonstrated by imaging Xe gas with a shockwave generated by an aluminum plate compressing the gas at Mach 8...
January 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28138899/case-control-study-of-postoperative-blood-pressure-in-patients-with-hemorrhagic-complications-after-laparoscopic-sleeve-gastrectomy-and-matched-controls
#10
Michał Robert Janik, Tomasz Rogula, Piotr Kowalewski, Maciej Walędziak, Maciej Matłok, Jakkub Brągoszewski, Andrzej Kwiatkowski, Krzysztof Paśnik
INTRODUCTION: Laparoscopic sleeve gastrectomy is associated with a moderate risk of hemorrhagic complications (HC). There is a debate regarding the relationship between HC and high blood pressure in postoperative period. AIM: The aim is to clarify whether the postoperative blood pressure is an independent risk factor for hemorrhagic complications after laparoscopic sleeve gastrectomy. METHODS: Medical records of 522 patients were reviewed...
January 30, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28134252/thz1-targeting-cdk7-suppresses-stat-transcriptional-activity-and-sensitizes-t-cell-lymphomas-to-bcl2-inhibitors
#11
Florencia Cayrol, Pannee Praditsuktavorn, Tharu M Fernando, Nicholas Kwiatkowski, Rosella Marullo, M Nieves Calvo-Vidal, Jude Phillip, Benet Pera, Shao Ning Yang, Kaipol Takpradit, Lidia Roman, Marcello Gaudiano, Ramona Crescenzo, Jia Ruan, Giorgio Inghirami, Tinghu Zhang, Graciela Cremaschi, Nathanael S Gray, Leandro Cerchietti
Peripheral T-cell lymphomas (PTCL) are aggressive diseases with poor response to chemotherapy and dismal survival. Identification of effective strategies to target PTCL biology represents an urgent need. Here we report that PTCL are sensitive to transcription-targeting drugs, and, in particular, to THZ1, a covalent inhibitor of cyclin-dependent kinase 7 (CDK7). The STAT-signalling pathway is highly vulnerable to THZ1 even in PTCL cells that carry the activating STAT3 mutation Y640F. In mutant cells, CDK7 inhibition decreases STAT3 chromatin binding and expression of highly transcribed target genes like MYC, PIM1, MCL1, CD30, IL2RA, CDC25A and IL4R...
January 30, 2017: Nature Communications
https://www.readbyqxmd.com/read/28125584/the-real-mccoil-a-method-for-the-concurrent-estimation-of-the-complexity-of-infection-and-snp-allele-frequency-for-malaria-parasites
#12
Hsiao-Han Chang, Colin J Worby, Adoke Yeka, Joaniter Nankabirwa, Moses R Kamya, Sarah G Staedke, Grant Dorsey, Maxwell Murphy, Daniel E Neafsey, Anna E Jeffreys, Christina Hubbart, Kirk A Rockett, Roberto Amato, Dominic P Kwiatkowski, Caroline O Buckee, Bryan Greenhouse
As many malaria-endemic countries move towards elimination of Plasmodium falciparum, the most virulent human malaria parasite, effective tools for monitoring malaria epidemiology are urgent priorities. P. falciparum population genetic approaches offer promising tools for understanding transmission and spread of the disease, but a high prevalence of multi-clone or polygenomic infections can render estimation of even the most basic parameters, such as allele frequencies, challenging. A previous method, COIL, was developed to estimate complexity of infection (COI) from single nucleotide polymorphism (SNP) data, but relies on monogenomic infections to estimate allele frequencies or requires external allele frequency data which may not available...
January 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28117441/plasmodium-malariae-and-p-ovale-genomes-provide-insights-into-malaria-parasite-evolution
#13
Gavin G Rutledge, Ulrike Böhme, Mandy Sanders, Adam J Reid, James A Cotton, Oumou Maiga-Ascofare, Abdoulaye A Djimdé, Tobias O Apinjoh, Lucas Amenga-Etego, Magnus Manske, John W Barnwell, François Renaud, Benjamin Ollomo, Franck Prugnolle, Nicholas M Anstey, Sarah Auburn, Ric N Price, James S McCarthy, Dominic P Kwiatkowski, Chris I Newbold, Matthew Berriman, Thomas D Otto
Elucidation of the evolutionary history and interrelatedness of Plasmodium species that infect humans has been hampered by a lack of genetic information for three human-infective species: P. malariae and two P. ovale species (P. o. curtisi and P. o. wallikeri). These species are prevalent across most regions in which malaria is endemic and are often undetectable by light microscopy, rendering their study in human populations difficult. The exact evolutionary relationship of these species to the other human-infective species has been contested...
January 25, 2017: Nature
https://www.readbyqxmd.com/read/28117431/culture-adaptation-of-malaria-parasites-selects-for-convergent-loss-of-function-mutants
#14
Antoine Claessens, Muna Affara, Samuel A Assefa, Dominic P Kwiatkowski, David J Conway
Cultured human pathogens may differ significantly from source populations. To investigate the genetic basis of laboratory adaptation in malaria parasites, clinical Plasmodium falciparum isolates were sampled from patients and cultured in vitro for up to three months. Genome sequence analysis was performed on multiple culture time point samples from six monoclonal isolates, and single nucleotide polymorphism (SNP) variants emerging over time were detected. Out of a total of five positively selected SNPs, four represented nonsense mutations resulting in stop codons, three of these in a single ApiAP2 transcription factor gene, and one in SRPK1...
January 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28102155/surgical-treatment-of-radial-head-fractures-outcomes-and-complications
#15
Bartosz Chwedczuk, Piotr Piekarczyk, Krzysztof Kwiatkowski, Krzysztof Piątkowski
BACKGROUND: Appropriate treatment of radial head fractures remains an area of disputes and controversy. The present paper aims to assess the outcomes of surgical fixation of these injuries and identify the most common complications. MATERIAL AND METHODS: The medical records of 63 patients (25 women and 38 men) treated in 2011 -2014 were analysed retrospectively. The treatment outcomes were assessed according to the Broberg and Morrey rating system and the QuickDASH score...
October 28, 2016: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28067620/characterisation-of-the-opposing-effects-of-g6pd-deficiency-on-cerebral-malaria-and-severe-malarial-anaemia
#16
Geraldine M Clarke, Kirk Rockett, Katja Kivinen, Christina Hubbart, Anna E Jeffreys, Kate Rowlands, Muminatou Jallow, David J Conway, Kalifa A Bojang, Margaret Pinder, Stanley Usen, Fatoumatta Sisay-Joof, Giorgio Sirugo, Ousmane Toure, Mahamadou A Thera, Salimata Konate, Sibiry Sissoko, Amadou Niangaly, Belco Poudiougou, Valentina D Mangano, Edith C Bougouma, Sodiomon B Sirima, David Modiano, Lucas N Amenga-Etego, Anita Ghansah, Kwadwo A Koram, Michael D Wilson, Anthony Enimil, Jennifer Evans, Olukemi K Amodu, Subulade Olaniyan, Tobias Apinjoh, Regina Mugri, Andre Ndi, Carolyne M Ndila, Sophie Uyoga, Alexander Macharia, Norbert Peshu, Thomas N Williams, Alphaxard Manjurano, Nuno Sepúlveda, Taane G Clark, Eleanor Riley, Chris Drakeley, Hugh Reyburn, Vysaul Nyirongo, David Kachala, Malcolm Molyneux, Sarah J Dunstan, Nguyen Hoan Phu, Nguyen Ngoc Quyen, Cao Quang Thai, Tran Tinh Hien, Laurens Manning, Moses Laman, Peter Siba, Harin Karunajeewa, Steve Allen, Angela Allen, Timothy Me Davis, Pascal Michon, Ivo Mueller, Síle F Molloy, Susana Campino, Angeliki Kerasidou, Victoria J Cornelius, Lee Hart, Shivang S Shah, Gavin Band, Chris Ca Spencer, Tsiri Agbenyega, Eric Achidi, Ogobara K Doumbo, Jeremy Farrar, Kevin Marsh, Terrie Taylor, Dominic P Kwiatkowski
Glucose-6-phosphate dehydrogenase (G6PD) deficiency is believed to confer protection against Plasmodium falciparum malaria, but the precise nature of the protective effecthas proved difficult to define as G6PD deficiency has multiple allelic variants with different effects in males and females, and it has heterogeneous effects on the clinical outcome of P. falciparum infection. Here we report an analysis of multiple allelic forms of G6PD deficiency in a large multi-centre case-control study of severe malaria, using the WHO classification of G6PD mutations to estimate each individual's level of enzyme activity from their genotype...
January 9, 2017: ELife
https://www.readbyqxmd.com/read/28032307/intravenous-enalaprilat-for-treatment-of-acute-hypertensive-heart-failure-in-the-emergency-department
#17
Syed Imran Ayaz, Craig M Sharkey, Gregory M Kwiatkowski, Suprat Saely Wilson, Reba S John, Rosa Tolomello, Arushi Mahajan, Scott Millis, Phillip D Levy
BACKGROUND: Afterload reduction with bolus enalaprilat is used by some for management of acute hypertensive heart failure (HF) but existing data on the safety and effectiveness of this practice are limited. The purpose of this study was to evaluate the clinical effects of bolus enalaprilat when administered to patients with acute hypertensive heart failure. FINDINGS: We performed an IRB-approved retrospective cohort study of patients who presented to the emergency department of a large urban academic hospital...
December 2016: International Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27998271/whole-genome-sequencing-of-plasmodium-falciparum-from-dried-blood-spots-using-selective-whole-genome-amplification
#18
Samuel O Oyola, Cristina V Ariani, William L Hamilton, Mihir Kekre, Lucas N Amenga-Etego, Anita Ghansah, Gavin G Rutledge, Seth Redmond, Magnus Manske, Dushyanth Jyothi, Chris G Jacob, Thomas D Otto, Kirk Rockett, Chris I Newbold, Matthew Berriman, Dominic P Kwiatkowski
BACKGROUND: Translating genomic technologies into healthcare applications for the malaria parasite Plasmodium falciparum has been limited by the technical and logistical difficulties of obtaining high quality clinical samples from the field. Sampling by dried blood spot (DBS) finger-pricks can be performed safely and efficiently with minimal resource and storage requirements compared with venous blood (VB). Here, the use of selective whole genome amplification (sWGA) to sequence the P...
December 20, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27994033/extreme-mutation-bias-and-high-at-content-in-plasmodium-falciparum
#19
William L Hamilton, Antoine Claessens, Thomas D Otto, Mihir Kekre, Rick M Fairhurst, Julian C Rayner, Dominic Kwiatkowski
For reasons that remain unknown, the Plasmodium falciparum genome has an exceptionally high AT content compared to other Plasmodium species and eukaryotes in general - nearly 80% in coding regions and approaching 90% in non-coding regions. Here, we examine how this phenomenon relates to genome-wide patterns of de novo mutation. Mutation accumulation experiments were performed by sequential cloning of six P. falciparum isolates growing in human erythrocytes in vitro for 4 years, with 279 clones sampled for whole genome sequencing at different time points...
December 19, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27992645/crystal-structures-of-bacterial-6-4-photolyase-mutants-with-impaired-dna-repair-activity
#20
Fan Zhang, Hongju Ma, Kalinga Bowatte, Dennis Kwiatkowski, Esther Mittmann, Heba Qasem, Norbert Krauss, Xiaoli Zeng, Zhong Ren, Patrick Scheerer, Xiaojing Yang, Tilman Lamparter
PhrB from Agrobacterium fabrum is the first prokaryotic photolyase which repairs (6-4) UV DNA photoproducts. The protein harbors three cofactors: the enzymatically active FAD chromophore, a second chromophore, 6,7-dimethyl-8-ribityllumazine (DMRL) and a cubane-type Fe-S cluster. Tyr424 of PhrB is part of the DNA-binding site and could provide an electron link to the Fe-S cluster. The PhrBY424F mutant showed reduced binding of lesion DNA and loss of DNA repair. The mutant PhrBI51W is characterized by the loss of the DMRL chromophore, reduced photoreduction and reduced DNA repair capacity...
December 19, 2016: Photochemistry and Photobiology
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