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Cytokines dialysis

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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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...
August 23, 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
#11
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
#12
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
#13
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
#14
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
https://www.readbyqxmd.com/read/28576435/-encapsulating-peritoneal-sclerosis
#15
Jean-Philippe Ryckelynck, Clémence Béchade, Nicolas Bouvier, Maxence Ficheux, Bruno Hurault de Ligny, Thierry Lobbedez
Encapsulating peritoneal sclerosis is a rare but devastating complication of long-term peritoneal dialysis with a high mortality rate. The incidence is between 0.5 and 2.5%, decreasing with time. PSE is defined as a clinical syndrome with signs of gastrointestinal obstruction, inflammation parameters, radiological and macroscopic changes. The duration of treatment and the cessation of peritoneal dialysis are the main risks. About 75% occured in patients on hemodialysis or after kidney transplantation. Morphological alterations are disappearance of mesothelial layer, submesothelial fibrosis, interstitial sclerosis and vasculopathy...
June 2017: Néphrologie & Thérapeutique
https://www.readbyqxmd.com/read/28524237/in-vitro-dialysis-of-cytokine-rich-plasma-with-high-and-medium-cut-off-membranes-reduces-its-procalcific-activity
#16
Kevin Willy, Michael Hulko, Markus Storr, Rose Speidel, Julia Gauss, Ralf Schindler, Daniel Zickler
Recently developed high-flux (HF) dialysis membranes with extended permeability provide better clearance of middle-sized molecules such as interleukins (ILs). Whether this modulation of inflammation influences the procalcific effects of septic plasma on vascular smooth muscle cells (VSMCs) is not known. To assess the effects of high cut-off (HCO) and medium cut-off (MCO) membranes on microinflammation and in vitro vascular calcification we developed a miniature dialysis model. Plasma samples from lipopolysaccharide-spiked blood were dialyzed with HF, HCO, and MCO membranes in an in vitro miniature dialysis model...
May 19, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28495592/mir-21-promotes-fibrogenesis-in-peritoneal-dialysis
#17
Melisa Lopez-Anton, Mark Lambie, Manuel Lopez-Cabrera, Claus P Schmitt, Vicente Ruiz-Carpio, Maria Bartosova, Betti Schaefer, Simon Davies, Timothy Stone, Robert Jenkins, Philip R Taylor, Nicholas Topley, Timothy Bowen, Donald Fraser
Peritoneal dialysis (PD) is a life-saving form of renal replacement therapy for those with end-stage kidney disease. Mesothelial cells (MCs) line the peritoneal cavity and help define peritoneal response to treatment-associated injury, a major reason for treatment failure. miRNAs are important regulators, but their roles in peritoneal fibrosis are largely unknown. In this study, miR-21 was one of the most abundant miRNAs in primary MCs, and was up-regulated by the profibrotic cytokine transforming growth factor-β1 and in PD effluent-derived MCs exhibiting mesenchymal phenotypic change...
July 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28491119/association-of-adipokines-with-blood-pressure-arterial-elasticity-and-cardiac-markers-in-dialysis-patients-cross-sectional-analysis-of-baseline-data-from-a-cohort-study
#18
Wenjin Liu, Lei Jiang, Jianping Chen, Chaoqing Gao, Jianmei Zhou, Jiajun Zhou, Youwei Bai, Hong Chu, Wei Fan, Liang Wang, Zhuxing Sun, Xiurong Li, Junwei Yang
BACKGROUND: Adipokines are a set of cytokines secreted by white adipose tissue that have been suggested to be involved in the development of cardiovascular diseases. We aimed to evaluate the cross-sectional associations of a panel of representative adipokines with cardiovascular measures in a cohort of hemodialysis patients. METHODS: We measured plasma adiponectin, resistin, plasminogen activator inhibitor-1 (PAI-1), leptin, monocyte chemotactic protein 1 (MCP-1) and adipsin levels in 366 dialysis patients and 60 healthy controls...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28490530/il-6-promotes-epithelial-to-mesenchymal-transition-of-human-peritoneal-mesothelial-cells-possibly-through-the-jak2-stat3-signaling-pathway
#19
Jing Xiao, Yanan Gong, Ying Chen, Dahai Yu, Xiaoyang Wang, Xiaoxue Zhang, Yanna Dou, Dong Liu, Genyang Cheng, Shan Lu, Wenming Yuan, Yansheng Li, Zhanzheng Zhao
Long-term peritoneal dialysis (PD) therapy results in functional and structural alteration of the peritoneal membrane, including epithelial-to-mesenchymal transition (EMT). Interleukin 6 (IL-6) is a local pleiotropic cytokine, hypothesized to play an important role in EMT. This study was designed to investigate the role of IL-6 in EMT and peritoneal membrane dysfunction in long-term PD patients by assessing the level of IL-6 in dialysate and exploring the relationship between IL-6, the related signaling pathway JAK2/STAT3, and EMT, using in vitro cellular and molecular techniques...
August 1, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28474577/association-of-inflammatory-cytokines-with-mortality-in-peritoneal-dialysis-patients
#20
Yao-Lung Liu, Jiung-Hsiun Liu, I-Kuan Wang, Shu-Woei Ju, Tung-Min Yu, I-Ru Chen, Yu-Ching Liu, Chung-Ming Huang, Shih-Yi Lin, Chiz-Tzung Chang, Chiu-Ching Huang
AIMS: Previous study on association between pro-inflammatory cytokines and mortality in PD population is limited. We aimed to investigate here. METHODS: Total 50 patients who underwent incident PD were enrolled in this study. We measured the titers of pro-inflammatory cytokines Interleukin-18(IL-18), Interleukin-6 (IL-6), and Interleukin-1ß (IL-1ß). Study outcomes were all-cause mortality, cardiovascular-related mortality, and infection-caused mortality. Cox-regression model was used...
March 2017: BioMedicine
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