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https://www.readbyqxmd.com/read/27930620/atypical-hemolytic-uremic-syndrome-ahus-essential-aspects-of-an-accurate-diagnosis
#1
Jeffrey Laurence, Hermann Haller, Pier Mannuccio Mannucci, Masaomi Nangaku, Manuel Praga, Santiago Rodriguez de Cordoba
Atypical hemolytic uremic syndrome (aHUS), a thrombotic microangiopathy (TMA), is a rare, life-threatening, systemic disease. When unrecognized or inappropriately treated, aHUS has a high degree of morbidity and mortality. aHUS results from chronic, uncontrolled activity of the alternative complement pathway, which activates platelets and damages the endothelium. Two-thirds of aHUS cases are associated with an identifiable complement-activating condition. aHUS is clinically very similar to the other major TMAs: Shiga toxin-producing Escherichia coli (STEC)-HUS, thrombotic thrombocytopenic purpura (TTP), and disseminated intravascular coagulation (DIC)...
November 2016: Clinical Advances in Hematology & Oncology: H&O
https://www.readbyqxmd.com/read/27928239/comparison-of-tissue-density-in-hounsfield-units-in-computed-tomography-and-cone-beam-computed-tomography
#2
Masoud Varshowsaz, Sepideh Goorang, Sara Ehsani, Zeynab Azizi, Sepideh Rahimian
OBJECTIVES: Bone quality and quantity assessment is one of the most important steps in implant treatment planning. Different methods such as computed tomography (CT) and recently suggested cone beam computed tomography (CBCT) with lower radiation dose and less time and cost are used for bone density assessment. This in vitro study aimed to compare the tissue density values in Hounsfield units (HUs) in CBCT and CT scans of different tissue phantoms with two different thicknesses, two different image acquisition settings and in three locations in the phantoms...
March 2016: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/27920811/the-use-of-routine-non-density-calibrated-clinical-computed-tomography-data-as-a-potentially-useful-screening-tool-for-identifying-patients-with-osteoporosis
#3
Christopher John Burke, Manjiri M Didolkar, Huiman X Barnhart, Emily N Vinson
OBJECTIVES: To evaluate whether lumbar vertebral body density CT attenuation values measured in Hounsfield Units (HUs) on routine Computed Tomography (CT) examinations can be reliably measured with limited variability, and to evaluate for a correlation between HUs and bone mineral density as measured by dual energy X-ray absorptiometry (DXA) scan. METHODS: Retrospective review of a total of 249 routine MDCT examinations, performed to measure HUs at the first non-rib bearing lumbar vertebral body on axial images, cross-referenced to the lateral scout image...
May 2016: Clinical Cases in Mineral and Bone Metabolism
https://www.readbyqxmd.com/read/27914959/virulence-traits-and-different-nle-profiles-in-cattle-and-human-verotoxin-producing-escherichia-coli-o157-h7-strains-from-argentina
#4
Juliana González, Andrea Mariel Sanso, Jimena Soledad Cadona, Ana Victoria Bustamante
Verotoxin-producing E. coli (VTEC) O157:H7 is the dominant serotype isolated from patients with HUS and, Argentina has the highest rate of HUS in the world. Molecular typing had allowed to identify subpopulations related to the origin and virulence of O157:H7 strains. Our aim was to perform a genetic characterization of 43 O157:H7 strains isolated in Argentine mostly from cattle and humans in order to establish the potential public health risk. For it, we used a combination of molecular subtyping methods in order to identify clade 8_rhsA (C3468G), LSPA-6 and virulence profiles and, a cytotoxicity assay on Vero cell...
November 30, 2016: Microbial Pathogenesis
https://www.readbyqxmd.com/read/27908187/dosimetric-characterization-of-mri-only-treatment-planning-for-brain-tumors-in-atlas-based-pseudo-ct-images-generated-from-standard-t1-weighted-mr-images
#5
Benjamin Demol, Christine Boydev, Juha Korhonen, Nick Reynaert
PURPOSE: Magnetic resonance imaging (MRI)-only radiotherapy treatment planning requires accurate pseudo-CT (pCT) images for precise dose calculation. The current work introduced an atlas-based method combined with MR intensity information. pCT analyses and Monte Carlo dose calculations for intracranial stereotactic treatments were performed. METHODS: Twenty-two patients, representing 35 tumor targets, were scanned using a 3D T1-weighted MRI sequence according to the clinical protocol...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27904864/nephrotic-range-proteinuria-and-peripheral-edema-in-a-child-not-only-idiopathic-nephrotic-syndrome
#6
Valentina Dolcemascolo, Marina Vivarelli, Manuela Colucci, Francesca Diomedi-Camassei, Rossella Piras, Marta Alberti, Francesco Emma
Hemolytic uremic syndrome (HUS) is defined by the simultaneous occurrence of hemolytic anemia, thrombocytopenia, and acute kidney injury due to thrombotic microangiopathy (TMA) mainly occurring in renal and cerebral microvessels. Although the most common cause of HUS in children is Shiga toxin-producing Escherichia coli, atypical forms in which Shiga toxin is not the trigger may occur. Research over the last few years has shown that complement dysregulation secondary to mutations of genes coding for proteins involved in the regulation of the alternative pathway of complement account for most forms of atypical HUS (aHUS)...
September 2016: Case Reports in Nephrology and Dialysis
https://www.readbyqxmd.com/read/27893870/associations-between-hydration-status-intravenous-fluid-administration-and-outcomes-of-patients-infected-with-shiga-toxin-producing-escherichia-coli-a-systematic-review-and-meta-analysis
#7
Silviu Grisaru, Jianling Xie, Susan Samuel, Lisa Hartling, Phillip I Tarr, David Schnadower, Stephen B Freedman
Importance: The associations between hydration status, intravenous fluid administration, and outcomes of patients infected with Shiga toxin-producing Escherichia coli (STEC) remain unclear. Objective: To determine the relationship between hydration status, the development and severity of hemolytic uremic syndrome (HUS), and adverse outcomes in STEC-infected individuals. Data Sources: MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials via the OvidSP platform, PubMed via the National Library of Medicine, CINAHL Plus with full text, Scopus, Web of Science, ClinicalTrials...
November 28, 2016: JAMA Pediatrics
https://www.readbyqxmd.com/read/27891338/non-o157-h7-shiga-toxin-producing-diarrhoeagenic-escherichia-coli-stec-in-southern-india-a-tinderbox-for-starting-epidemic
#8
Shashank Purwar, Subrana Roy, Sharada Metgud
INTRODUCTION: Outbreaks due to non-O157:H7 Shiga toxin producing Escherichia coli (STEC) resulting in Haemolytic Uraemic Syndrome (HUS) have garnered much attention because of associated mortality transcending across continents and also because diarrhoea due to E.coli itself is rare in developed countries. The actual incidence of non-O157:H7 STEC in sporadic acute diarrhoea is not fully elucidated, both in developing as well as in developed countries. Due to larger extent of faecal-oral transmission in developing countries it is prudent to look for non-O157: H7 STEC in such epidemiological settings because of very high potential to spread across larger geographical regions and cause life threatening illness...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27880834/overexpressed-proteins-in-hypervirulent-clade-8-and-clade-6-strains-of-escherichia-coli-o157-h7-compared-to-e-coli-o157-h7-edl933-clade-3-strain
#9
Natalia Amigo, Qi Zhang, Ariel Amadio, Qunjie Zhang, Wanderson M Silva, Baiyuan Cui, Zhongjian Chen, Mariano Larzabal, Jinlong Bei, Angel Cataldi
Escherichia coli O157:H7 is responsible for severe diarrhea and hemolytic uremic syndrome (HUS), and predominantly affects children under 5 years. The major virulence traits are Shiga toxins, necessary to develop HUS and the Type III Secretion System (T3SS) through which bacteria translocate effector proteins directly into the host cell. By SNPs typing, E. coli O157:H7 was separated into nine different clades. Clade 8 and clade 6 strains were more frequently associated with severe disease and HUS. In this study, we aimed to identify differentially expressed proteins in two strains of E...
2016: PloS One
https://www.readbyqxmd.com/read/27879189/gemcitabine-induced-hemolytic-uremic-syndrome-treated-with-eculizumab-or-plasmapheresis-two-case-reports%C3%A2
#10
María Esperanza López Rubio, Raquel Rodado Martínez, María Luisa Illescas, Encarnación Mateo Bosch, Mercedes Martínez Díaz, Lourdes de la Vara Inesta, Basilio Cabezuelo, María Elisa Morales Albuja, Eladio Lucas Guillén, Luisa Jimeno García
BACKGROUND: Drug-induced hemolytic-uremic syndrome (HUS) has shown good response to eculizumab (ECU). We present 2 cases of patients with gemcitabine-induced HUS (GEM-HUS), one of whom was treated with ECU and the other with conventional treatment. Patient 1: A 74-year-old male with resected adenocarcinoma of the pancreas started adjuvant treatment with GEM, but after 5 months GEM was discontinued due to acute kidney injury and severe hypertension. Laboratory analyses identified microangiopathic hemolytic anemia (MHA) and thrombocytopenia...
November 23, 2016: Clinical Nephrology
https://www.readbyqxmd.com/read/27874324/interaction-between-radioadaptive-response-and-radiation-induced-bystander-effect-in-caenorhabditis-elegans-a-unique-role-of-the-dna-damage-checkpoint
#11
Huangqi Tang, Liangwen Chen, Lianyun Chen, Bin Chen, Ting Wang, Aifeng Yang, Furu Zhan, Lijun Wu, Po Bian
Although radioadaptive responses (RAR) and radiation-induced bystander effects (RIBE) are two important biological effects of low-dose radiation, there are currently only limited data that directly address their interaction, particularly in the context of whole organisms. In previous studies, we separately demonstrated RAR and RIBE using an in vivo system of C. elegans . In the current study, we further investigated their interaction in C. elegans , with the ratio of protruding vulva as the biological end point for RAR...
November 22, 2016: Radiation Research
https://www.readbyqxmd.com/read/27871640/multidimensional-influences-on-autism-symptom%C3%A2-measures-implications-for-use-in%C3%A2-etiological-research
#12
Karoline Alexandra Havdahl, Vanessa Hus Bal, Marisela Huerta, Andrew Pickles, Anne-Siri Øyen, Camilla Stoltenberg, Catherine Lord, Somer L Bishop
OBJECTIVE: Growing awareness that symptoms of autism spectrum disorder (ASD) transcend multiple diagnostic categories, and major advances in the identification of genetic syndromes associated with ASD, have led to widespread use of ASD symptom measures in etiologic studies of neurodevelopmental disorders. Insufficient consideration of potentially confounding factors such as cognitive ability or behavior problems can have important negative consequences in interpretation of findings, including erroneous estimation of associations between ASD and etiologic factors...
December 2016: Journal of the American Academy of Child and Adolescent Psychiatry
https://www.readbyqxmd.com/read/27869414/prevalence-and-clinical-course-of-typical-hemolytic-uremic-syndrome-among-sibling
#13
Alfredo Eymann, Paula Coccia, Claudia Raddavero, Gabriela Lafi, Verónica Ferraris, José Ramírez, Jorge Ferraris
Introduction: Hemolytic uremic syndrome (HUS) isaninfectious disease caused by Shiga toxin-producing Escherichia coli. The objective of this study was to assess the risk of transmission and clinical course between siblings with typical HUS. Population and methods: Medical records of children with typical HUS between 1997 and 2012 were reviewed. Sibling pairs were established as inclusion criteria. A severity score was defined. Results: A total of 133 patients with HUS were recorded; 40 had siblings and 4 progressed to HUS (10%)...
December 1, 2016: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/27868334/consensus-on-the-standardization-of-terminology-in-thrombotic-thrombocytopenic-purpura-and-related-thrombotic-microangiopathies
#14
M Scully, S Cataland, P Coppo, J de la Rubia, K D Friedman, J Kremer Hovinga, B Lämmle, M Matsumoto, K Pavenski, E Sadler, R Sarode, H Wu
BACKGROUND: Thrombotic thrombocytopenic purpura (TTP) and hemolytic uremic syndrome (HUS) are two important acute conditions to diagnose. Thrombotic Microangiopathy is a broad pathophysiological process that leads to microangiopathic hemolytic anemia, thrombocytopenia and involves capillary and small vessel platelet aggregates. The most common cause being disseminated intravascular coagulation (DIC), which may be differentiated by abnormal coagulation. Clinically, a number of conditions present with microangiopathic hemolytic anemia and thrombocytopenia (MAHAT), including cancer, infection, transplantation, drugs, autoimmune disease and pre-eclampsia and HELLP (Hemolysis, Elevated Liver enzymes, Low Platelet count) syndrome in pregnancy...
November 21, 2016: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/27834111/computed-tomography-and-histopathological-evaluation-of-osteitis-in-rabbit-models-with-rhinosinusitis
#15
Yi Dong, Bing Zhou, Xiangdong Wang, Zhenxiao Huang, Mingjie Wang, Yunchuan Li, Hongrui Zang, Erzhong Fan, Ying Li, Xinyan Wang
CONCLUSIONS: There is clear correspondence between HU and histopathological evaluation of osteitis. It is feasible to evaluate bone remodeling in rabbit models with rhinosinusitis by measuring the HU. OBJECTIVE: The objective of this study was to determine whether the HUs of rabbit CRS models can be used to objectively evaluate the degree of osteitis. METHODS: Sixty rabbit models were inoculated with staphylococcus aureus. The rabbits were divided into three groups...
November 11, 2016: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/27815337/development-of-original-metabolically-stable-apelin-17-analogs-with-diuretic-and-cardiovascular-effects
#16
Romain Gerbier, Rodrigo Alvear-Perez, Jean-Francois Margathe, Adrien Flahault, Pierre Couvineau, Ji Gao, Nadia De Mota, Hubert Dabire, Bo Li, Emilie Ceraudo, Annette Hus-Citharel, Lucie Esteoulle, Cynthia Bisoo, Marcel Hibert, Alain Berdeaux, Xavier Iturrioz, Dominique Bonnet, Catherine Llorens-Cortes
Apelin, a (neuro)vasoactive peptide, plays a prominent role in controlling cardiovascular functions and water balance. Because the in vivo apelin half-life is in the minute range, we aimed to identify metabolically stable apelin-17 (K17F) analogs. We generated P92 by classic chemical substitutions and LIT01-196 by original addition of a fluorocarbon chain to the N terminus of K17F. Both analogs were much more stable in plasma (half-life >24 h for LIT01-196) than K17F (4.6 min). Analogs displayed a subnanomolar affinity for the apelin receptor and behaved as full agonists with regard to cAMP production, ERK phosphorylation, and apelin receptor internalization...
November 4, 2016: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/27802295/cerebral-hemodynamics-in-patients-with-hemolytic-uremic-syndrome-assessed-by-susceptibility-weighted-imaging-and-four-dimensional-non-contrast-mr-angiography
#17
Ulrike Löbel, Nils Daniel Forkert, Peter Schmitt, Torsten Dohrmann, Maria Schroeder, Tim Magnus, Stefan Kluge, Christina Weiler-Normann, Xiaoming Bi, Jens Fiehler, Jan Sedlacik
BACKGROUND AND PURPOSE: Conventional magnetic resonance imaging (MRI) of patients with hemolytic uremic syndrome (HUS) and neurological symptoms performed during an epidemic outbreak of Escherichia coli O104:H4 in Northern Europe has previously shown pathological changes in only approximately 50% of patients. In contrast, susceptibility-weighted imaging (SWI) revealed a loss of venous contrast in a large number of patients. We hypothesized that this observation may be due to an increase in cerebral blood flow (CBF) and aimed to identify a plausible cause...
2016: PloS One
https://www.readbyqxmd.com/read/27789303/stone-attenuation-values-measured-by-average-hounsfield-units-and-stone-volume-as-predictors-of-total-laser-energy-required-during-ureteroscopic-lithotripsy-using-holmium-yttrium-aluminum-garnet-lasers
#18
Mitsuo Ofude, Takashi Shima, Satoshi Yotsuyanagi, Daisuke Ikeda
OBJECTIVE: To evaluate the predictors of the total laser energy (TLE) required during ureteroscopic lithotripsy (URS) using the holmium:yttrium-aluminum-garnet (Ho:YAG) laser for a single ureteral stone. MATERIALS AND METHODS: We retrospectively analyzed the data of 93 URS procedures performed for a single ureteral stone in our institution from November 2011 to September 2015. We evaluated the association between TLE and preoperative clinical data, such as age, sex, body mass index, and noncontrast computed tomographic findings, including stone laterality, location, maximum diameter, volume, stone attenuation values measured using average Hounsfield units (HUs), and presence of secondary signs (severe hydronephrosis, tissue rim sign, and perinephric stranding)...
October 24, 2016: Urology
https://www.readbyqxmd.com/read/27787280/acute-kidney-injury-in-a-patient-with-hemolytic-anemia-and-thrombocytopenia
#19
Michael Breunig, Miguel Lalama, Gabrielle Rivard, Deanne Kashiwagi, Lynn Cornell
Atypical hemolytic uremic syndrome (HUS) is clinically difficult to distinguish from HUS and thrombotic thrombocytopenic purpura. Atypical HUS results from dysregulation of complement activation causing thrombotic microangiopathy affecting multiple organ systems. Atypical HUS is associated with high morbidity and mortality, making early recognition and appropriate therapy necessary to improve patient outcomes.
November 2016: JAAPA: Official Journal of the American Academy of Physician Assistants
https://www.readbyqxmd.com/read/27784011/decreased-neutrophil-extracellular-trap-degradation-in-shiga-toxin-associated-haemolytic-uraemic-syndrome
#20
Jonatan Leffler, Zoltán Prohászka, Bálint Mikes, György Sinkovits, Katarzyna Ciacma, Péter Farkas, Marienn Réti, Kata Kelen, György S Reusz, Attila J Szabó, Myriam Martin, Anna M Blom
BACKGROUND: Neutrophil extracellular traps (NETs) can stimulate thrombosis, and their degradation is decreased in several autoimmune disorders. It was recently reported that some patients with haemolytic uraemic syndrome (HUS) also fail to degrade NETs and that neutrophils from Shiga toxin-associated HUS are primed to form NETs. METHOD: We used a well-characterized cohort of 74 thrombotic microangiopathy (TMA) patients, with a subset also providing follow-up samples, and 112 age-matched controls to investigate NET degradation and serum nuclease activity in TMA before, during and after treatment...
October 27, 2016: Journal of Innate Immunity
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