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https://www.readbyqxmd.com/read/29506143/mtor-pathway-is-activated-in-endothelial-cells-from-patients-with-takayasu-arteritis-and-is-modulated-by-serum-immunoglobulin-g
#1
Jérôme Hadjadj, Guillaume Canaud, Tristan Mirault, Maxime Samson, Patrick Bruneval, Alexis Régent, Claire Goulvestre, Véronique Witko-Sarsat, Nathalie Costedoat-Chalumeau, Loïc Guillevin, Luc Mouthon, Benjamin Terrier
Objectives: Takayasu arteritis (TA) and GCA are large-vessel vasculitides characterized by vascular remodelling involving endothelial cells (ECs) and vascular smooth muscle cells. Mammalian target of rapamycin (mTOR) pathway has been involved in vascular remodelling. We hypothesized that the mTOR pathway was involved in the pathogenesis of large-vessel vasculitis. Methods: We used IF analysis on aortic and temporal artery biopsies from patients with TA and GCA to assess the involvement of the mTOR pathway and searched for antibodies targeting ECs in serum by IIF and cellular ELISA...
February 27, 2018: Rheumatology
https://www.readbyqxmd.com/read/29478048/association-between-heights-of-dialysis-patients-and-outcomes-results-from-a-retrospective-cohort-study-of-the-international-monitoring-dialysis-outcomes-mondo-database-initiative
#2
Samir Patel, Alice Topping, Xiaoling Ye, Hanjie Zhang, Bernard Canaud, Paola Carioni, Cristina Marelli, Adrian Guinsburg, Albert Power, Neill Duncan, Jeroen Kooman, Frank van der Sande, Len A Usvyat, Yuedong Wang, Xiaoqi Xu, Peter Kotanko, Jochen G Raimann
BACKGROUND: Tall people have improved metabolic profiles and better cardiovascular outcomes, a relationship inverted in dialysis patients. We investigated the relationship between height and outcomes in incident hemodialysis (HD) patients commencing treatment in an analysis of the international Monitoring Dialysis Outcomes (MONDO) database. METHODS: In this retrospective cohort study, we included incident HD patients commencing treatment between -January 1, 2006 and December 31, 2010 and investigated the association between height and mortality using the MONDO database...
2018: Blood Purification
https://www.readbyqxmd.com/read/29193165/precise-quantitative-assessment-of-the-clinical-performances-of-two-high-flux-polysulfone-hemodialyzers-in-hemodialysis-validation-of-a-blood-based-simple-kinetic-model-versus-direct-dialysis-quantification
#3
Paik-Seong Lim, Yuyu Lin, Minfeng Chen, Xiaoqi Xu, Yun Shi, Sudhir Bowry, Bernard Canaud
Highly permeable dialysis membranes with better design filters have contributed to improved solute removal and dialysis efficacy. However, solute membrane permeability needs to be well controlled to avoid increased loss of albumin that is considered to be detrimental for dialysis patients. A novel high-flux dialyzer type (FX CorDiax; Fresenius Medical Care) incorporating an advanced polysulfone membrane modified with nano-controlled spinning technology to enhance the elimination of a broader spectrum of uremic toxins has been released...
November 27, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28514783/dialysis-access-as-an-area-of-improvement-in-elderly-incident-hemodialysis-patients-results-from-a-cohort-study-from-the-international-monitoring-dialysis-outcomes-initiative
#4
COMPARATIVE STUDY
Jochen G Raimann, Claudia Barth, Len A Usvyat, Priscila Preciado, Bernard Canaud, Michael Etter, Xiaoqi Xu, Adrian Guinsburg, Christina Marelli, Neill Duncan, Albert Power, Frank M van der Sande, Jeroen P Kooman, Stephan Thijssen, Yuedong Wang, Peter Kotanko
BACKGROUND: Commencing hemodialysis (HD) using a catheter is associated with a higher risk of adverse outcomes, and early conversion from central-venous catheter (CVC) to arteriovenous fistula/graft (non-CVC) improves outcomes. We investigated CVC prevalence and conversion, and their effects on outcomes during the first year of HD in a multinational cohort of elderly patients. METHODS: Patients ≥70 years from the MONDO Initiative who commenced HD between 2000 and 2010 in Asia-Pacific, Europe, North-, and South-America and survived at least 6 months were included in this investigation...
2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28431138/cardiovascular-outcome-trials-in-patients-with-chronic-kidney-disease-challenges-associated-with-selection-of-patients-and-endpoints
#5
Patrick Rossignol, Rajiv Agarwal, Bernard Canaud, Alan Charney, Gilles Chatellier, Jonathan C Craig, William C Cushman, Ronald T Gansevoort, Bengt Fellström, Dahlia Garza, Nicolas Guzman, Frank A Holtkamp, Gerard M London, Ziad A Massy, Alexandre Mebazaa, Peter G M Mol, Marc A Pfeffer, Yves Rosenberg, Luis M Ruilope, Jonathan Seltzer, Amil M Shah, Salim Shah, Bhupinder Singh, Bergur V Stefánsson, Norman Stockbridge, Wendy Gattis Stough, Kristian Thygesen, Michael Walsh, Christoph Wanner, David G Warnock, Christopher S Wilcox, Janet Wittes, Bertram Pitt, Aliza Thompson, Faiez Zannad
Although cardiovascular disease is a major health burden for patients with chronic kidney disease, most cardiovascular outcome trials have excluded patients with advanced chronic kidney disease. Moreover, the major cardiovascular outcome trials that have been conducted in patients with end-stage renal disease have not demonstrated a treatment benefit. Thus, clinicians have limited evidence to guide the management of cardiovascular disease in patients with chronic kidney disease, particularly those on dialysis...
April 18, 2017: European Heart Journal
https://www.readbyqxmd.com/read/27262365/an-international-observational-study-suggests-that-artificial-intelligence-for-clinical-decision-support-optimizes-anemia-management-in-hemodialysis-patients
#6
Carlo Barbieri, Manuel Molina, Pedro Ponce, Monika Tothova, Isabella Cattinelli, Jasmine Ion Titapiccolo, Flavio Mari, Claudia Amato, Frank Leipold, Wolfgang Wehmeyer, Stefano Stuard, Andrea Stopper, Bernard Canaud
Managing anemia in hemodialysis patients can be challenging because of competing therapeutic targets and individual variability. Because therapy recommendations provided by a decision support system can benefit both patients and doctors, we evaluated the impact of an artificial intelligence decision support system, the Anemia Control Model (ACM), on anemia outcomes. Based on patient profiles, the ACM was built to recommend suitable erythropoietic-stimulating agent doses. Our retrospective study consisted of a 12-month control phase (standard anemia care), followed by a 12-month observation phase (ACM-guided care) encompassing 752 patients undergoing hemodialysis therapy in 3 NephroCare clinics located in separate countries...
August 2016: Kidney International
https://www.readbyqxmd.com/read/27094625/unraveling-the-relationship-between-mortality-hyponatremia-inflammation-and-malnutrition-in-hemodialysis-patients-results-from-the-international-mondo-initiative
#7
M J E Dekker, D Marcelli, B Canaud, C J A M Konings, K M Leunissen, N W Levin, P Carioni, V Maheshwari, J G Raimann, F M van der Sande, L A Usvyat, P Kotanko, J P Kooman
BACKGROUND/OBJECTIVES: Hyponatremia is a risk factor for mortality in hemodialysis (HD) patients. It is not well known to which extent the comorbidities, malnutrition, fluid status imbalance and inflammation are related to hyponatremia and affect outcomes. SUBJECTS/METHODS: We studied 8883 patients from the European subset of the international MONitoring Dialysis Outcomes initiative. Nutritional and fluid statuses were assessed by bioimpedance spectroscopy. Fluid depletion was defined as overhydration⩽-1...
July 2016: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/26939055/performance-of-a-predictive-model-for-long-term-hemoglobin-response-to-darbepoetin-and-iron-administration-in-a-large-cohort-of-hemodialysis-patients
#8
Carlo Barbieri, Elena Bolzoni, Flavio Mari, Isabella Cattinelli, Francesco Bellocchio, José D Martin, Claudia Amato, Andrea Stopper, Emanuele Gatti, Iain C Macdougall, Stefano Stuard, Bernard Canaud
Anemia management, based on erythropoiesis stimulating agents (ESA) and iron supplementation, has become an increasingly challenging problem in hemodialysis patients. Maintaining hemodialysis patients within narrow hemoglobin targets, preventing cycling outside target, and reducing ESA dosing to prevent adverse outcomes requires considerable attention from caregivers. Anticipation of the long-term response (i.e. at 3 months) to the ESA/iron therapy would be of fundamental importance for planning a successful treatment strategy...
2016: PloS One
https://www.readbyqxmd.com/read/26223346/association-between-pre-hemodialysis-serum-sodium-concentration-and-blood-pressure-results-from-a-retrospective-analysis-from-the-international-monitoring-dialysis-outcomes-mondo-initiative
#9
MULTICENTER STUDY
J G Raimann, B Canaud, M Etter, J P Kooman, N W Levin, D Marcelli, C Marelli, A Power, N Duncan, F M van der Sande, P Carioni, S Thijssen, X Xu, L A Usvyat, Y Wang, P Kotanko
A recent study from the United Kingdom indicates an association between pre hemodialysis (HD) serum sodium (SNa(+)) and systolic and diastolic blood pressure (SBP and DBP) in chronic HD patients. We extend this analysis to an international cohort of incident HD patients. The Monitoring Dialysis Outcomes initiative encompasses patients from 41 countries. Over 2 years monthly pre-HD SNa(+) levels were used as predictors of pre-HD SBP and DBP in a linear mixed model (LMM) adjusted for age, gender, interdialytic weight gain, diabetes, serum albumin and calcium...
July 2016: Journal of Human Hypertension
https://www.readbyqxmd.com/read/25791209/physical-methods-for-evaluating-the-nutrition-status-of-hemodialysis-patients
#10
REVIEW
Daniele Marcelli, Peter Wabel, Sebastian Wieskotten, Annalisa Ciotola, Aileen Grassmann, Attilio Di Benedetto, Bernard Canaud
This article aims to provide an overview of the different nutritional markers and the available methodologies for the physical assessment of nutrition status in hemodialysis patients, with special emphasis on early detection of protein energy wasting (PEW). Nutrition status assessment is made on the basis of anamnesis, physical examination, evaluation of nutrient intake, and on a selection of various screening/diagnostic methodologies. These methodologies can be subjective, e.g. the Subjective Global Assessment score (SGA), or objective in nature (e...
October 2015: Journal of Nephrology
https://www.readbyqxmd.com/read/25769629/-new-insights-in-the-antiphospholipid-syndrome-associated-vasculitis-the-role-of-the-akt-mtorc-pathway
#11
EDITORIAL
G Canaud
No abstract text is available yet for this article.
July 2015: La Revue de Médecine Interne
https://www.readbyqxmd.com/read/25631854/akt-mtorc-pathway-in-antiphospholipid-related-vasculopathy-a-new-player-in-the-game
#12
EDITORIAL
G Canaud, C Legendre, F Terzi
No abstract text is available yet for this article.
March 2015: Lupus
https://www.readbyqxmd.com/read/25305756/discovery-of-new-risk-loci-for-iga-nephropathy-implicates-genes-involved-in-immunity-against-intestinal-pathogens
#13
Krzysztof Kiryluk, Yifu Li, Francesco Scolari, Simone Sanna-Cherchi, Murim Choi, Miguel Verbitsky, David Fasel, Sneh Lata, Sindhuri Prakash, Samantha Shapiro, Clara Fischman, Holly J Snyder, Gerald Appel, Claudia Izzi, Battista Fabio Viola, Nadia Dallera, Lucia Del Vecchio, Cristina Barlassina, Erika Salvi, Francesca Eleonora Bertinetto, Antonio Amoroso, Silvana Savoldi, Marcella Rocchietti, Alessandro Amore, Licia Peruzzi, Rosanna Coppo, Maurizio Salvadori, Pietro Ravani, Riccardo Magistroni, Gian Marco Ghiggeri, Gianluca Caridi, Monica Bodria, Francesca Lugani, Landino Allegri, Marco Delsante, Mariarosa Maiorana, Andrea Magnano, Giovanni Frasca, Emanuela Boer, Giuliano Boscutti, Claudio Ponticelli, Renzo Mignani, Carmelita Marcantoni, Domenico Di Landro, Domenico Santoro, Antonello Pani, Rosaria Polci, Sandro Feriozzi, Silvana Chicca, Marco Galliani, Maddalena Gigante, Loreto Gesualdo, Pasquale Zamboli, Giovanni Giorgio Battaglia, Maurizio Garozzo, Dita Maixnerová, Vladimir Tesar, Frank Eitner, Thomas Rauen, Jürgen Floege, Tibor Kovacs, Judit Nagy, Krzysztof Mucha, Leszek Pączek, Marcin Zaniew, Małgorzata Mizerska-Wasiak, Maria Roszkowska-Blaim, Krzysztof Pawlaczyk, Daniel Gale, Jonathan Barratt, Lise Thibaudin, Francois Berthoux, Guillaume Canaud, Anne Boland, Marie Metzger, Ulf Panzer, Hitoshi Suzuki, Shin Goto, Ichiei Narita, Yasar Caliskan, Jingyuan Xie, Ping Hou, Nan Chen, Hong Zhang, Robert J Wyatt, Jan Novak, Bruce A Julian, John Feehally, Benedicte Stengel, Daniele Cusi, Richard P Lifton, Ali G Gharavi
We performed a genome-wide association study (GWAS) of IgA nephropathy (IgAN), the most common form of glomerulonephritis, with discovery and follow-up in 20,612 individuals of European and East Asian ancestry. We identified six new genome-wide significant associations, four in ITGAM-ITGAX, VAV3 and CARD9 and two new independent signals at HLA-DQB1 and DEFA. We replicated the nine previously reported signals, including known SNPs in the HLA-DQB1 and DEFA loci. The cumulative burden of risk alleles is strongly associated with age at disease onset...
November 2014: Nature Genetics
https://www.readbyqxmd.com/read/25277688/high-volume-postdilution-hemodiafiltration-is-a-feasible-option-in-routine-clinical-practice
#14
Daniele Marcelli, Caecilia Scholz, Pedro Ponce, Tânia Sousa, Pascal Kopperschmidt, Aileen Grassmann, Bruno Pinto, Bernard Canaud
Hemodiafiltration (HDF) with 20-22 L of substitution fluid is increasingly recognized as associated with significant benefits regarding patient outcome. However, some doubt exists as to whether these high volumes can be achieved in routine clinical practice. A total of 4176 sessions with 366 patients on postdilution HDF were analyzed in this 1-month observational cohort study with prospective data collection. All dialysis machines were equipped with AutoSub plus signal analysis software that automatically and continuously adapts the substitution fluid flow according to the blood flow, blood viscosity, and dialyzer characteristics...
February 2015: Artificial Organs
https://www.readbyqxmd.com/read/25054716/inhibition-of-the-mtorc-pathway-in-the-antiphospholipid-syndrome
#15
Guillaume Canaud, Frank Bienaimé, Fanny Tabarin, Guillaume Bataillon, Danielle Seilhean, Laure-Hélène Noël, Marie-Agnès Dragon-Durey, Renaud Snanoudj, Gérard Friedlander, Lise Halbwachs-Mecarelli, Christophe Legendre, Fabiola Terzi
BACKGROUND: Although thrombosis is considered the cardinal feature of the antiphospholipid syndrome, chronic vascular lesions are common, particularly in patients with life-threatening complications. In patients who require transplantation, vascular lesions often recur. The molecular pathways involved in the vasculopathy of the antiphospholipid syndrome are unknown, and adequate therapies are lacking. METHODS: We used double immunostaining to evaluate pathway activation in the mammalian target of rapamycin complex (mTORC) and the nature of cell proliferation in the vessels of patients with primary or secondary antiphospholipid syndrome nephropathy...
July 24, 2014: New England Journal of Medicine
https://www.readbyqxmd.com/read/24962744/endovascular-repair-of-acute-uncomplicated-aortic-type-b-dissection-promotes-aortic-remodelling-1-year-results-of-the-adsorb-trial
#16
RANDOMIZED CONTROLLED TRIAL
J Brunkwall, P Kasprzak, E Verhoeven, R Heijmen, P Taylor, P Alric, L Canaud, M Janotta, D Raithel, W Malina, Ti Resch, H-H Eckstein, S Ockert, T Larzon, F Carlsson, H Schumacher, S Classen, P Schaub, J Lammer, L Lönn, R E Clough, V Rampoldi, S Trimarchi, J-N Fabiani, D Böckler, D Kotelis, D Böckler, D Kotelis, H von Tenng-Kobligk, N Mangialardi, S Ronchey, G Dialetto, V Matoussevitch
OBJECTIVES: Uncomplicated acute type B aortic dissection (AD) treated conservatively has a 10% 30-day mortality and up to 25% need intervention within 4 years. In complicated AD, stent grafts have been encouraging. The aim of the present prospective randomised trial was to compare best medical treatment (BMT) with BMT and Gore TAG stent graft in patients with uncomplicated AD. The primary endpoint was a combination of incomplete/no false lumen thrombosis, aortic dilatation, or aortic rupture at 1 year...
September 2014: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/23763583/eculizumab-improves-posttransplant-thrombotic-microangiopathy-due-to-antiphospholipid-syndrome-recurrence-but-fails-to-prevent-chronic-vascular-changes
#17
G Canaud, N Kamar, D Anglicheau, L Esposito, M Rabant, L-H Noël, C Guilbeau-Frugier, R Sberro-Soussan, A Del Bello, F Martinez, J Zuber, L Rostaing, C Legendre
Thrombotic microangiopathy (TMA) is one of the hallmark vascular lesions of antiphospholipid syndrome nephropathy (APSN). These lesions are at high risk of recurrence after kidney transplantation. The complement pathway is thought to be active in this process. We used eculizumab to treat three consecutive kidney transplant recipients with posttransplant TMA due to APSN recurrence that was resistant to plasmapheresis and explored the complement deposition and apoptotic and vascular cell markers on the sequential transplant biopsies...
August 2013: American Journal of Transplantation
https://www.readbyqxmd.com/read/22743335/dialysis-adequacy-today-a-european-perspective
#18
REVIEW
Francesco Locatelli, Bernard Canaud
The need to improve haemodialysis (HD) therapies and to reduce cardiovascular and all-cause mortality frequently encountered by dialysis patients has been recognized and addressed for many years. A number of approaches, including increasing the frequency versus duration of treatment, have been proposed and debated in terms of their clinical efficacy and economic feasibility. Future prescription of dialysis to an expanding end-stage chronic kidney disease (CKD-5D) population needs a re-evaluation of existing practices while maintaining the emphasis on patient well-being both in the short and in the long term...
August 2012: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/22188692/the-early-years-of-on-line-hdf-how-did-it-all-start-how-did-we-get-here
#19
REVIEW
Bernard Canaud
In the mid-1980s, limits and side effects of contemporary hemodialysis were basically due to short treatment time, use of low-flux membranes and employment of acetate-buffered dialysate. These were already associated with a relatively high morbidity and cardiovascular mortality as part of diaysis-related pathology. Based on these considerations, the concept of on-line hemodiafiltration (HDF) was proposed as an innovative solution. By combining diffusive and convective clearances, HDF offered the most efficient modality to clear small and middle-sized uremic toxins...
2011: Contributions to Nephrology
https://www.readbyqxmd.com/read/22026681/change-in-inertial-confinement-fusion-implosions-upon-using-an-ab-initio-multiphase-dt-equation-of-state
#20
L Caillabet, B Canaud, G Salin, S Mazevet, P Loubeyre
Improving the description of the equation of state (EOS) of deuterium-tritium (DT) has recently been shown to change significantly the gain of an inertial confinement fusion target [S. X. Hu et al., Phys. Rev. Lett. 104, 235003 (2010)]. Here we use an advanced multiphase EOS, based on ab initio calculations, to perform a full optimization of the laser pulse shape with hydrodynamic simulations starting from 19 K in DT ice. The thermonuclear gain is shown to be a robust estimate over possible uncertainties of the EOS...
September 9, 2011: Physical Review Letters
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