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Dialysis cytokines

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https://www.readbyqxmd.com/read/29273022/on-line-hemodiafiltration-did-not-induce-an-overproduction-of-oxidative-stress-and-inflammatory-cytokines-in-intensive-care-unit-acute-kidney-injury
#1
Kada Klouche, Laurent Amigues, Marion Morena, Vincent Brunot, Anne Marie Dupuy, Audrey Jaussent, Marie Christine Picot, Noémie Besnard, Delphine Daubin, Jean Paul Cristol
BACKGROUND: Though on-line intermittent hemodiafiltration (OL-IHDF) is a routine therapy for chronic dialysis patients, it is not yet widespread used in critically ill patients. This study was undergone to evaluate efficiency and tolerance of OL-IHDF and to appreciate inflammatory consequences of its use in intensive care unit (ICU)-acute kidney injury (AKI) patients. METHODS: In this prospective cohort study conducted in a medical academic ICU in France, 30 AKI patients who underwent OL-IHDF were included...
December 22, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/29227979/higher-serum-hepatocyte-growth-factor-concentration-is-associated-with-better-preservation-of-gfr-in-hemodialysis-patients
#2
Ewa Baum, Beata Maćkowiak, Patrycja Sosińska-Zawierucha, Krzysztof Pawlaczyk, Barbara Kołodziejczak, Andrzej Breborowicz
BACKGROUND/AIMS: Hemodialysis induces an intravascular inflammatory reaction which may further deteriorate renal function. We studied changes of serum interleukin 6 (IL6) and hepatocyte growth factor (HGF) concentrations during dialysis sessions, and at 12 month intervals. The synthesis of these cytokines in arterial endothelial cells in the presence of serum obtained from dialyzed patients was studied. Changes of the inflammatory reaction during 12 months of treatment were correlated with GFR...
December 8, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29194344/direct-peritoneal-resuscitation-alters-leukocyte-infiltration-in-the-lung-after-acute-brain-death
#3
Jessica L Weaver, Paul J Matheson, Amy Matheson, Cynthia D Downard, R Neal Garrison, Jason W Smith
BACKGROUND: Brain death is associated with significant lung injury and inflammation. This has been associated with worse long-term outcomes for transplanted lungs. Direct peritoneal resuscitation (DPR) reduces systemic inflammation in brain death and improves lung procurement rate. The effect of DPR on macrophage and neutrophil infiltration in the lungs is not known. METHODS: Male Sprague-Dawley rats had a 4F Fogarty catheter inserted into the skull and the balloon inflated until brain death was achieved...
November 30, 2017: Shock
https://www.readbyqxmd.com/read/29194322/direct-peritoneal-resuscitation-reduces-intestinal-permeability-after-brain-death
#4
Jessica L Weaver, Paul J Matheson, Amy Matheson, Brian G Harbrecht, Cynthia D Downard, R Neal Garrison, Jason W Smith
BACKGROUND: The profound inflammatory response associated with brain death is frequently cited as the reason organs procured from brain dead donors are associated with worse graft function. The intestine releases inflammatory mediators in other types of shock, but its role is brain death has not been well-studied. Direct peritoneal resuscitation (DPR) improves visceral organ blood flow and reduces inflammation after hemorrhagic shock. We hypothesized that use of DPR would maintain intestinal integrity and reduce circulating inflammatory mediators after brain death...
December 1, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/29163492/t-cell-composition-of-the-lymph-node-is-associated-with-the-risk-for-early-rejection-after-renal-transplantation
#5
Burç Dedeoglu, Nicolle H R Litjens, Annelies E de Weerd, Frank Jmf Dor, Mariska Klepper, Derek Reijerkerk, Carla C Baan, Michiel G H Betjes
Background: The T-cell composition within the lymph node (LN) of end-stage renal disease (ESRD) patients differs from the composition within the circulation. Activation of the alloreactive T-cell response within secondary lymphoid organs is important after organ transplantation. However, to date no data are present on LN T-cell subsets and the risk for acute rejection after kidney transplantation. Methods: T cells from LNs of ESRD patients were analyzed for frequency of recent thymic emigrants, relative telomere length, expression of differentiation markers, and were related to the development of early acute rejection (EAR), occurring within 3 months after renal transplantation (RT)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29152461/use-of-toll-like-receptor-assays-for-the-detection-of-bacterial-contaminations-in-icodextrin-batches-released-for-peritoneal-dialysis
#6
Hêla Hacine-Gherbi, Agnès Denys, Mathieu Carpentier, Arnaud Heysen, Pierrick Duflot, Pierre Lanos, Fabrice Allain
Icodextrin is a starch derivative used for preparing solutions of peritoneal dialysis. Unfortunately, peptidoglycans (PGN) and lipopolysaccharides (LPS) have been reported to contaminate certain icodextrin batches and to contribute to the development of sterile peritonitis. The decision of selecting or rejecting icodextrin batches is however difficult, because of limitations in the detection of these bacterial contaminants. Besides monocyte activation tests of cytokine release, a number of bio-assays using stably TLR-transfected cell lines have been developed...
2017: Toxicology Reports
https://www.readbyqxmd.com/read/29075112/effect-of-inhibitors-of-endocytosis-and-nf-kb-signal-pathway-on-folate-conjugated-nanoparticle-endocytosis-by-rat-kupffer-cells
#7
Hongbo Tang, Hongli Chen, Yajing Jia, Xiaoyan Liu, Zhaohong Han, Aihua Wang, Qi Liu, Xinlei Li, Xin Feng
The regular accumulation of nanoparticles in the liver makes them hepatotoxic and decreases the circulation time, thus reducing their therapeutic effect. Resolving this problem will be significant in improving bioavailability and reducing side effects. In this study, we reduced the phagocytosis of epirubicin (EPI)-loaded folic acid-conjugated pullulan acetate (FPA/EPI) nanoparticles by Kupffer cells (KCs) through internalization and nuclear factor kappa B (NF-kB) signal pathway inhibitors, thus allowing development of FPA/EPI nanoparticles as a nanodrug delivery system (NDDS) based on our previous study...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29033853/proinflammatory-effect-of-high-glucose-concentrations-on-hmrsv5-cells-via-the-autocrine-effect-of-hmgb1
#8
Yuening Chu, Yi Wang, Zhihuang Zheng, Yuli Lin, Rui He, Jun Liu, Xuguang Yang
Background: Peritoneal fibrosis, in which inflammation and apoptosis play crucial pathogenic roles, is a severe complication associated with the treatment of kidney failure with peritoneal dialysis (PD) using a glucose-based dialysate. Mesothelial cells (MCs) take part in the inflammatory processes by producing various cytokines and chemokines, such as monocyte chemoattractant protein 1 (MCP-1) and interleukin 8 (IL-8). The apoptosis of MCs induced by high glucose levels also contributes to complications of PD...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28992851/initiation-of-peritoneal-dialysis-in-the-first-weeks-after-catheter-insertion-a-comparison-of-a-neutral-ph-low-gdp-pd-fluid-and-a-conventional-pd-fluid%C3%A2
#9
Karima Farhat, Frans J van Ittersum, Pieter M Ter Wee, Nanne J Paauw, Robbert H J Beelen, Caroline E Douma
BACKGROUND: Chronic exposure to peritoneal dialysis (PD) fluid is associated with development of functional and structural alterations of the peritoneal membrane. The exact time point at which these changes actually occur is not known. Whether changes to the peritoneum occur immediately after installation of PD fluids and whether there is a difference between neutral-pH, low glucose degradation product (low-GDP) PD fluids and conventional PD fluids is not known either. MATERIALS AND METHODS: We performed an observational study...
October 10, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28974444/expression-purification-and-functional-analysis-of-an-antigen-targeting-fusion-protein-composed-of-cd40-ligand-and-the-c-terminal-fragment-of-ovalbumin
#10
Yunnuo Shi, Scott A Halperin, Song F Lee
Delivering antigen via molecules specifically targeting receptors on the surface of antigen-presenting cells is a strategy to improve immune responses. In this study, an antigen-targeting fusion protein (OVA-CD40LS) composed of the C-terminal fragment of ovalbumin and the extracellular domain of mouse CD40 ligand was constructed by genetic fusion. The OVA-CD40LS and the control OVA (rOVA) genes were cloned in Escherichia coli and over-expressed as insoluble proteins. The rOVA protein was purified from the insoluble fraction of E...
September 30, 2017: Protein Expression and Purification
https://www.readbyqxmd.com/read/28910800/the-place-of-large-pore-membranes-in-the-treatment-portfolio-of-patients-on-hemodialysis
#11
Wim Van Biesen, Raymond Vanholder, Eva Schepers, Griet Glorieux, Annemieke Dhondt, Sunny Eloot
Cardiovascular disease is a major concern in patients with end-stage kidney disease (ESKD). Inflammation induced by retention of uremic toxins, of which a substantial fraction has a molecular weight in the middle molecular range, has been associated with increased cardiovascular risk. In an attempt to reduce inflammation and thus cardiovascular toxicity in patients with ESKD, hemodiafiltration (HDF) has been promoted to enhance the clearance of middle molecular weight substances during dialysis. However, HDF increases the technical complexity and costs, and requires ultrapure dialysis fluid...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/28910791/inflammation-and-protein-energy-wasting-in-the-uremic-milieu
#12
Magdalena Jankowska, Gabriela Cobo, Bengt Lindholm, Peter Stenvinkel
Inflammation is normally a protective and physiological response to harmful stimuli, but typically becomes an uncontrolled, maladaptive, and persistent process in patients with end-stage renal disease (ESRD). Through a deleterious cascade of poorly controlled reactions mediated by biologically active molecules (also called middle molecular weight uremia retention solutes), inflammation associates with a range of complications including cardiovascular disease and protein-energy wasting (PEW). Persistent inflammation, which is central to the conceptual etiological models of PEW and the malnutrition, inflammation, and atherosclerosis syndrome, induces and reignites processes leading to PEW in a number of ways including stimulation of both direct and indirect mechanisms of muscle proteolysis...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/28910789/end-stage-renal-disease-inflammation-and-cardiovascular-outcomes
#13
Lu Dai, Edyta Golembiewska, Bengt Lindholm, Peter Stenvinkel
Despite marked improvements in renal replacement therapy during the last 30 years, the age-adjusted mortality rate in end-stage renal disease (ESRD) patients is still unacceptably high and comparable to that of many malignancies. Cardiovascular disease (CVD) remains the major cause of morbidity and mortality in ESRD patients. However, traditional risk factors can only partially explain the high premature cardiovascular burden in this population. Nontraditional risk factors, including persistent low-grade inflammation, are critical in the pathogenesis of atherosclerosis, vascular calcification, and other causes of CVD and may also contribute to protein-energy wasting and other complications in chronic kidney disease (CKD) patients...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/28873458/anti-fibrotic-effects-of-valproic-acid-in-experimental-peritoneal-fibrosis
#14
Elerson C Costalonga, Luiza J de Freitas, Deise da S P Aragone, Filipe M O Silva, Irene L Noronha
BACKGROUND: Progressive fibrous thickening of the peritoneal membrane is a complication of long-term peritoneal dialysis (PD). TGF-β/Smad pathway activation, inflammation, and neoangiogenesis play important roles in peritoneal membrane (PM) changes induced by PD. Recently, histone deacetilase inhibitors (HDACi) have shown anti-fibrotic and anti-inflammatory effects in different experimental models. These drugs prevent deacetylation of histones causing a loosen chromatin, which in turn induce the expression of some anti-fibrotic genes...
2017: PloS One
https://www.readbyqxmd.com/read/28862721/in-vitro-benchmark-of-cytokine-removal-by-dialyzers-with-various-permeability-profiles
#15
Michael Hulko, Rose Speidel, Julia Gauss, Markus Storr, Bernd Krause
PURPOSE: Removal of cytokines is relevant for dialysis patients as they are suspected to promote cardiovascular complications. The objective of this study was to benchmark membranes with different permeability profiles under standardized in vitro test conditions using miniaturized devices with respect to their ability to remove cytokines from human serum and to lower cell activating potential. METHODS: In vitro dialysis was used to dialyze cytokine enriched serum in 3 independent experiments per tested membrane...
August 11, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28840494/ultrapure-dialysis-water-obtained-with-additional-ultrafilter-may-reduce-inflammation-in-patients-on-hemodialysis
#16
Biagio Di Iorio, Lucia Di Micco, Dario Bruzzese, Luca Nardone, Luigi Russo, Pietro Formisano, Vittoria D'Esposito, Domenico Russo
BACKGROUND: Patients on standard dialysis, in particular those on high-flux and high-efficiency dialysis, are exposed to hundreds of liters of dialysis-water per week. The quality of dialysis-water is a factor responsible for inflammation in dialysis patients. Inflammation is a potent trigger of atherosclerosis and a pathogenetic factor in anemia, increasing mortality and morbidity in dialysis patients. Current systems for water treatment do not completely eliminate bacteria and endotoxins...
December 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/28743570/chemical-structure-and-anti-inflammatory-effect-of-polysaccharides-obtained-from-infusion-of-sedum-dendroideum-leaves
#17
Ana Flávia de Oliveira, Geórgia Erdmann do Nascimento, Marcello Iacomini, Lucimara Mach Côrtes Cordeiro, Thales Ricardo Cipriani
Sedum dendroideum is popularly known as balsam and used for treatment of inflammatory disorders. Two polysaccharides (RSBAL-H2O and RSBAL-0.5) were isolated from infusion of its dried leaves, using dialysis at 100kDa cut-off membrane and anion exchange chromatography. Methylation and NMR analyses showed that RSBAL-H2O is a highly methyl-esterified homogalacturonan, constituted by (1→4)-α-D-GalA residues, whereas RSBAL-0.5 is a highly methyl-esterified homogalacturonan branched at O-3, probably by type II arabinogalactans and arabinans...
December 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28740213/functional-and-transcriptomic-characterization-of-peritoneal-immune-modulation-by-addition-of-alanyl-glutamine-to-dialysis-fluid
#18
Rebecca Herzog, Lilian Kuster, Julia Becker, Tobias Gluexam, Dietmar Pils, Andreas Spittler, Manoj K Bhasin, Seth L Alper, Andreas Vychytil, Christoph Aufricht, Klaus Kratochwill
Peritonitis remains a major cause of morbidity and mortality during chronic peritoneal dialysis (PD). Glucose-based PD fluids reduce immunological defenses in the peritoneal cavity. Low concentrations of peritoneal extracellular glutamine during PD may contribute to this immune deficit. For these reasons we have developed a clinical assay to measure the function of the immune-competent cells in PD effluent from PD patients. We then applied this assay to test the impact on peritoneal immune-competence of PD fluid supplementation with alanyl-glutamine (AlaGln) in 6 patients in an open-label, randomized, crossover pilot trial (EudraCT 2012-004004-36), and related the functional results to transcriptome changes in PD effluent cells...
July 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28698251/trpa1-mechanoreceptors-mediate-the-il-6-response-to-a-single-pd-dwell-in-the-rat
#19
Daniel Nilsson, Eva Jennische, Nicola Cavallini, Magnus Braide
BACKGROUND: The development of modern, biocompatible peritoneal dialysis (PD) fluids has not entirely eliminated the local pro-inflammatory effects of PD fluid administration. The present study was performed in order to establish the importance of known signaling pathways connected to mechano-, osmo- and chemo-sensors of the transient receptor potential (TRP) family for the acute inflammatory response to PD. METHODS: Rats were exposed to a single 4-hour dwell of lactate-buffered, 2...
September 2017: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis
https://www.readbyqxmd.com/read/28652532/eicosapentaenoic-acid-enriched-high-density-lipoproteins-exhibit-anti-atherogenic-properties
#20
Nobuaki Tanaka, Yasuhiro Irino, Masakazu Shinohara, Shigeyasu Tsuda, Takeshige Mori, Manabu Nagao, Toshihiko Oshita, Kenta Mori, Tetsuya Hara, Ryuji Toh, Tatsuro Ishida, Ken-Ichi Hirata
BACKGROUND: It has previously been reported that oral administration of purified eicosapentaenoic acid (EPA) generates EPA-rich high-density lipoprotein (HDL) particles with a variety of anti-inflammatory properties. In this study, the mechanism underlying the anti-atherogenic effects of EPA-rich HDL using reconstituted HDL (rHDL) was investigated.Methods and Results:rHDL was generated by the sodium cholate dialysis method, using apolipoprotein A-1 protein, cholesterol, and various concentrations of EPA-phosphatidylcholine (PC) or egg-PC...
June 23, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
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