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https://www.readbyqxmd.com/read/29674516/pneumococcal-haemolytic-uraemic-syndrome-in-the-postvaccine-era
#1
Jolie Lawrence, Amanda Gwee, Catherine Quinlan
OBJECTIVE: Pneumococcal infection is a leading cause of haemolytic uraemic syndrome (HUS) and is potentially vaccine preventable. Published data suggest high mortality and poor renal outcomes. The introduction of the 7-valent pneumococcal conjugate vaccine (PCV) has seen the emergence of disease caused by non-vaccine strains, particularly 19A. We sought to describe serotype prevalence and outcomes, particularly after the introduction of the 13-valent PCV. DESIGN AND SETTING: We performed a retrospective chart review, using hospital medical records to identify cases of HUS in a tertiary paediatric hospital in Australia over a 20-year period (January 1997-December 2016)...
April 19, 2018: Archives of Disease in Childhood
https://www.readbyqxmd.com/read/29668480/the-6th-rare-disease-south-eastern-europe-see-meeting-skopje-macedonia-november-11th-2017
#2
Zoran Gucev, Velibor Tasic, Momir Polenakovic
The sixth SEE meeting on rare diseases (RDs) was held in MASA the November 10th, 2017. A block of lectures on rare renal diseases started the meeting: nephrotic syndrome, Alport syndrome, atypical HUS, hypophosphatemic rickets, CAKUT were presented in all complexities. Their molecular and genetic mechanisms were discussed. The discovery of a dozen of newly genes in CAKUT, congenital overgrowth, spodilocostal dysplasia, precocious puberty has been done with collaboration of Macedonian and foreign researchers...
December 1, 2017: Prilozi (Makedonska Akademija Na Naukite i Umetnostite. Oddelenie za Medicinski Nauki)
https://www.readbyqxmd.com/read/29667294/image-quality-and-absorbed-dose-comparison-of-single-and-dual-source-cone-beam-computed-tomography
#3
Hideharu Miura, Shuichi Ozawa, Toshiya Okazue, Atsushi Kawakubo, Kiyoshi Yamada, Yasushi Nagata
PURPOSE: Dual-source cone-beam computed tomography (DCBCT) is currently available in the Vero4DRT image-guided radiotherapy system. We evaluated the image quality and absorbed dose for DCBCT and compared the values with those for single-source CBCT (SCBCT). METHODS: Image uniformity, Hounsfield unit (HU) linearity, image contrast, and spatial resolution were evaluated using a Catphan phantom. The rotation angle for acquiring SCBCT and DCBCT images is 215° and 115°, respectively...
April 17, 2018: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/29659360/-development-of-a-product-anti-shiga-toxin-for-prevention-of-the-hemolytic-uremic-syndrome
#4
Yanina Hiriart, Romina Pardo, Lucas Bukata, Constanza Lauché, Luciana Muñoz, Mariana Colonna, Fernando Goldbaum, Santiago Sanguineti, Vanesa Zylberman
The typical hemolytic uremic syndrome (HUS) is an orphan disease caused by Shiga toxin(Stx) producing Escherichia coli strains and characterized by acute kidney damage, microangiopathic hemolytic anemia and low platelet count. It is endemic in Argentina, the country with the highest incidence of HUS in the world. Stx is essential for its development and therefore, HUS is considered a toxemic non-bacteremic disorder, which could be treated with antibodies. Herein we describe the development of a new treatment capable of neutralizing the toxic effect of Stx and its variants...
2018: Medicina
https://www.readbyqxmd.com/read/29657197/adamts-13-level-in-children-with-severe-diarrhea-associated-hemolytic-uremic-syndrome-unmasking-new-association
#5
Naglaa A Khalifa, Heba H Gawish, Noora A Khalifa, Doaa M Tawfeek, Saed M Morsy
Severe deficiency of ADAMTS-13 leads to thrombotic thrombocytopenic purpura. Few studies have reported reduced activity of ADAMTS-13 in patients with atypical and typical hemolytic uremic syndrome (HUS). We hypothesized that ADAMTS-13 deficiency might play a role in the pathogenesis of severe HUS. This study aimed to evaluate the ADAMTS-13 level in severe typical HUS. This prospective case-control study was carried out in the Pediatric Nephrology Unit and Clinical Pathology Department, Faculty of Medicine, Zagazig University from February 2013 to February 2014...
March 2018: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/29657193/atypical-hemolytic-uremic-syndrome-laboratory-characteristics-complement-amplifying-conditions-renal-biopsy-and-genetic-mutations
#6
REVIEW
Mohammad A Hossain, Anmol Cheema, Sheila Kalathil, Ravneet Bajwa, Eric J Costanzo, James Cosentino, Jennifer Cheng, Tushar Vachharajani, Arif Asif
Atypical hemolytic uremic syndrome (aHUS) is characterized by microangiopathic hemolytic anemia, consumptive thrombocytopenia, and widespread damage to multiple organs including the kidney. The syndrome has a high mortality necessitating the need for an early diagnosis to limit target organ damage. Because thrombotic microangiopathies present with similar clinical picture, accurate diagnosis of aHUS continues to pose a diagnostic challenge. This article focuses on the role of four distinct aspects of aHUS that assist clinicians in making an accurate diagnosis of aHUS...
March 2018: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/29628636/bismuth-silicon-and-bismuth-polyurethane-composite-shields-for-breast-protection-in-chest-computed-tomography-examinations
#7
Parinaz Mehnati, Mehran Arash, Parisa Akhlaghi
The article aims at constructing protective composite shields for breasts in chest computed tomography and investigating the effects of applying these new bismuth composites on dose and image quality. Polyurethane and silicon with 5% of bismuth were fabricated as a protective shield. At first, their efficiency in attenuating the X-ray beam was investigated by calculating the total attenuation coefficients at diagnostic energy range. Then, a physical chest phantom was scanned without and with these shields at tube voltage of 120 kVp, and image parameters together with dose values were studied...
January 2018: Journal of Medical Physics
https://www.readbyqxmd.com/read/29615989/intestinal-pathogenic-escherichia-coli-insights-for-vaccine-development
#8
REVIEW
Maricarmen Rojas-Lopez, Ricardo Monterio, Mariagrazia Pizza, Mickaël Desvaux, Roberto Rosini
Diarrheal diseases are one of the major causes of mortality among children under five years old and intestinal pathogenic Escherichia coli (InPEC) plays a role as one of the large causative groups of these infections worldwide. InPECs contribute significantly to the burden of intestinal diseases, which are a critical issue in low- and middle-income countries (Asia, Africa and Latin America). Intestinal pathotypes such as enteropathogenic E. coli (EPEC) and enterotoxigenic E. coli (ETEC) are mainly endemic in developing countries, while ETEC strains are the major cause of diarrhea in travelers to these countries...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29610995/extra-renal-manifestations-of-atypical-hemolytic-uremic-syndrome-in-children
#9
Kibriya Fidan, Nilüfer Göknar, Bora Gülhan, Engin Melek, Zeynep Y Yıldırım, Esra Baskın, Mutlu Hayran, Kaan Gülleroglu, Zeynep B Özçakar, Fatih Ozaltin, Oguz Soylemezoglu
BACKGROUND: Atypical hemolytic uremic syndrome (aHUS) is a chronic disease characterized by thrombotic microangiopathy and a high risk of end-stage kidney disease. Dysregulation and/or excessive activation of the complement system results in thrombotic microangiopathy. Interest in extrarenal manifestations of aHUS is increasing. This study aimed to determine the clinical characteristics of patients with extrarenal manifestations of aHUS in childhood. METHODS: This study included 70 children with extrarenal manifestations of HUS from the national Turkish aHUS Registry...
April 2, 2018: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/29606600/growth-advantage-of-escherichia-coli-o104-h4-strains-on-5-n-acetyl-9-o-acetyl-neuraminic-acid-as-a-carbon-source-is-dependent-on-heterogeneous-phage-borne-nans-p-esterases
#10
Nadja Saile, Lisa Schwarz, Kristina Eißenberger, Jochen Klumpp, Florian W Fricke, Herbert Schmidt
Enterohemorrhagic E. coli (EHEC) are serious bacterial pathogens which are able to cause a hemorrhagic colitis or the life-threatening hemolytic-uremic syndrome (HUS) in humans. EHEC strains can carry different numbers of phage-borne nanS-p alleles that are responsible for acetic acid release from mucin from bovine submaxillary gland and 5-N-acetyl-9-O-acetyl neuraminic acid (Neu5,9Ac2 ), a carbohydrate present in mucin. Thus, Neu5,9Ac2 can be transformed to 5-N-acetyl neuraminic acid, an energy source used by E...
March 26, 2018: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/29582550/consensus-opinion-on-diagnosis-and-management-of-thrombotic-microangiopathy-in-australia-and-new-zealand
#11
REVIEW
Lucy C Fox, Solomon J Cohney, Joshua Y Kausman, Jake Shortt, Peter D Hughes, Erica M Wood, Nicole M Isbel, Theo de Malmanche, Anne Durkan, Pravin Hissaria, Piers Blombery, Thomas D Barbour
Thrombotic microangiopathy (TMA) arises in a variety of clinical circumstances with the potential to cause significant dysfunction of the kidneys, brain, gastrointestinal tract and heart. TMA should be considered in all patients with thrombocytopenia and anaemia, with an immediate request to the haematology laboratory to look for red cell fragments on a blood film. Whilst TMA of any aetiology generally demands prompt treatment, this is especially so in thrombotic thrombocytopenic purpura (TTP) and atypical haemolytic uraemic syndrome (aHUS), where organ failure may be precipitous, irreversible and fatal...
March 27, 2018: Internal Medicine Journal
https://www.readbyqxmd.com/read/29578925/successful-management-of-a-rare-cause-of-hemolytic-uremic-syndrome-with-eculizumab-in-a-child
#12
Caner Alparslan, Önder Yavaşcan, Belde Kasap Demir, Bahriye Atmiş, Aysun Karabay Bayazit, Göksel Leblebisatan, Elif P Öncel, Demet Alaygut, Fatma Mutlubaş, Nejat Aksu
BACKGROUND: Hemolytic uremic syndrome (HUS) is characterized by microangiopathic hemolytic anemia, acute renal failure, and thrombocytopenia. It very rarely coexists with acute lymphoblastic leukemia (ALL) emerging before, simultaneously, or after the diagnosis has been made, and management of the patient may be difficult. CASE: We present the case of a 7-year-old boy who was diagnosed with HUS and initially managed by hemodialysis (HD). Thereafter, HUS progressed, and neurological findings developed...
March 23, 2018: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29575875/assessment-of-the-efficacy-of-ofatumumab-in-patients-with-chronic-lymphocytic-leukaemia-treated-in-the-department-of-haematooncology-and-bone-marrow-transplantation-of-the-medical-university-in-lublin-prelimary-results
#13
Ewa Wąsik-Szczepanek, Agnieszka Szymczyk, Małgorzata Kowal, Adam Nogalski, Marek Hus
INTRODUCTION: Despite significant recent advances in the treatment of chronic lymphocytic leukaemia (CLL), most cases of the disease are still incurable. Treatment with monoclonal antibodies, such as ofatumumab, is one of the new therapeutic options. OBJECTIVE: Retrospective analysis of the efficacy of ofatumumab in patients with chronic lymphocytic leukaemia (CLL) treated in the Haematooncology and Bone Marrow Transplantation Department of the Medical University of Lublin, Poland, during 2011-2013...
March 14, 2018: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/29572749/eculizumab-treatment-in-severe-pediatric-stec-hus-a-multicenter-retrospective-study
#14
Lucas Percheron, Raluca Gramada, Stéphanie Tellier, Remi Salomon, Jérôme Harambat, Brigitte Llanas, Marc Fila, Emma Allain-Launay, Anne-Laure Lapeyraque, Valerie Leroy, Anne-Laure Adra, Etienne Bérard, Guylhène Bourdat-Michel, Hassid Chehade, Philippe Eckart, Elodie Merieau, Christine Piètrement, Anne-Laure Sellier-Leclerc, Véronique Frémeaux-Bacchi, Chloe Dimeglio, Arnaud Garnier
BACKGROUND: Hemolytic uremic syndrome related to Shiga-toxin-secreting Escherichia coli infection (STEC-HUS) remains a common cause of acute kidney injury in young children. No specific treatment has been validated for this severe disease. Recently, experimental studies highlight the potential role of complement in STEC-HUS pathophysiology. Eculizumab (EC), a monoclonal antibody against terminal complement complex, has been used in severe STEC-HUS patients, mostly during the 2011 German outbreak, with conflicting results...
March 23, 2018: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/29563942/atypical-hemolytic-uremic-syndrome-and-eculizumab-therapy-in-children
#15
REVIEW
Seong Heon Kim, Hye Young Kim, Su Young Kim
Hemolytic uremic syndrome (HUS) is often encountered in children with acute kidney injury. Besides the well-known shiga toxin-producing Escherichia coli -associated HUS, atypical HUS (aHUS) caused by genetic complement dysregulation has been studied recently. aHUS is a rare, chronic, and devastating disorder that progressively damages systemic organs, resulting in stroke, end-stage renal disease, and death. The traditional treatment for aHUS is mainly plasmapheresis or plasma infusion; however, many children with aHUS will progress to chronic kidney disease despite plasma therapy...
February 2018: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/29558000/hemolytic-uremic-syndrome-with-dual-caution-in-an-infant-cobalamin-c-defect-and-complement-dysregulation-successfully-treated-with-eculizumab
#16
Ulkem Kocoglu Barlas, Hasan Serdar Kıhtır, Nilufer Goknar, Melike Ersoy, Nihal Akcay, Esra Sevketoglu
BACKGROUND: Hemolytic uremic syndrome (HUS) is a clinical syndrome characterized by hemolytic anemia, thrombocytopenia, and acute kidney injury. Atypical hemolytic uremic syndrome (aHUS) is a devastating disease with significant mortality and high risk of progression to end-stage kidney disease. It is mostly caused by dysregulation of the alternative complement pathway. Cobalamin C (Cbl C) defect is a genetic disorder of cobalamin metabolism and is a rare cause of HUS. CASE-DIAGNOSIS/TREATMENT: We present a 6-month-old male infant who was admitted to the pediatric intensive care unit (PICU) due to restlessness, severe hypertension, anemia, respiratory distress, and acute kidney injury...
March 20, 2018: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/29552364/clinical-relapses-of-atypical-hus-on-eculizumab-clinical-gap-for-monitoring-and-individualised-therapy
#17
Chia Wei Teoh, Kathleen Mary Gorman, Bryan Lynch, Timothy H J Goodship, Niamh Marie Dolan, Mary Waldron, Michael Riordan, Atif Awan
Atypical hemolytic uremic syndrome (aHUS) is caused by dysregulation of the complement system. A humanised anti-C5 monoclonal antibody (eculizumab) is available for the treatment of aHUS. We present the first description of atypical HUS in a child with a coexistent diagnosis of a POL-III leukodystrophy. On standard eculizumab dosing regime, there was evidence of ongoing C5 cleavage and clinical relapses when immunologically challenged. Eculizumab is an effective therapy for aHUS, but the recommended doses may not be adequate for all patients, highlighting the need for ongoing efforts to develop a strategy for monitoring of treatment efficacy and potential individualisation of therapy...
2018: Case Reports in Nephrology
https://www.readbyqxmd.com/read/29531819/mechanism-of-inhibition-of-shiga-toxigenic-escherichia-coli-subab-cytotoxicity-by-steroids-and-diacylglycerol-analogues
#18
Kinnosuke Yahiro, Sayaka Nagasawa, Kimitoshi Ichimura, Hiroki Takeuchi, Kohei Ogura, Hiroyasu Tsutsuki, Takeshi Shimizu, Sunao Iyoda, Makoto Ohnishi, Hirotaro Iwase, Joel Moss, Masatoshi Noda
Shiga toxigenic Escherichia coli (STEC) are responsible for a worldwide foodborne disease, which is characterized by severe bloody diarrhea and hemolytic uremic syndrome (HUS). Subtilase cytotoxin (SubAB) is a novel AB5 toxin, which is produced by Locus for Enterocyte Effacement (LEE)-negative STEC. Cleavage of the BiP protein by SubAB induces endoplasmic reticulum (ER) stress, followed by induction of cytotoxicity in vitro or lethal severe hemorrhagic inflammation in mice. Here we found that steroids and diacylglycerol (DAG) analogues (e...
December 2018: Cell Death Discovery
https://www.readbyqxmd.com/read/29518026/first-look-at-the-venom-of-naja-ashei
#19
Konrad Kamil Hus, Justyna Buczkowicz, Vladimír Petrilla, Monika Petrillová, Andrzej Łyskowski, Jaroslav Legáth, Aleksandra Bocian
Naja ashei is an African spitting cobra species closely related to N. mossambica and N. nigricollis . It is known that the venom of N. ashei , like that of other African spitting cobras, mainly has cytotoxic effects, however data about its specific protein composition are not yet available. Thus, an attempt was made to determine the venom proteome of N. ashei with the use of 2-D electrophoresis and MALDI ToF/ToF (Matrix-Assisted Laser Desorption/Ionization Time of Flight) mass spectrometry techniques. Our investigation revealed that the main components of analysed venom are 3FTxs (Three-Finger Toxins) and PLA₂s (Phospholipases A₂)...
March 8, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29515100/a-multi-omic-analysis-reveals-the-role-of-fumarate-in-regulating-the-virulence-of-enterohemorrhagic-escherichia-coli
#20
Cheng-Ju Kuo, Sin-Tian Wang, Chia-Mei Lin, Hao-Chieh Chiu, Cheng-Rung Huang, Der-Yen Lee, Geen-Dong Chang, Ting-Chen Chou, Jenn-Wei Chen, Chang-Shi Chen
The enteric pathogen enterohemorrhagic Escherichia coli (EHEC) is responsible for outbreaks of bloody diarrhea and hemolytic uremic syndrome (HUS) worldwide. Several molecular mechanisms have been described for the pathogenicity of EHEC; however, the role of bacterial metabolism in the virulence of EHEC during infection in vivo remains unclear. Here we show that aerobic metabolism plays an important role in the regulation of EHEC virulence in Caenorhabditis elegans. Our functional genomic analyses showed that disruption of the genes encoding the succinate dehydrogenase complex (Sdh) of EHEC, including the sdhA gene, attenuated its toxicity toward C...
March 7, 2018: Cell Death & Disease
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