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Peritoneal membrane damage during chronic peritoneal dialysis is the main cause of that treatment failure. Preservation of the mesothelial cells (MC) is important for the survival of the peritoneum. Evaluation of dialysates effect on the function of MC and potential modification of that effect by sulodexide (heparin 80% and dermatan sulfate 20%). Dialysate effluents, after the overnight exchange with dianeal 1.5% dextrose, were collected from 7 continuous ambulatory peritoneal dialysis (CAPD) patients, and their effect ± sulodexide 0.5 LRU/mL on genes expression, secretory activity and protein synthesis in MC was studied. Exposure of MC to the studied dialysates caused intracellular oxidative stress and significantly increased expression of the genes regulating the synthesis of interleukin-6 (IL-6), monocyte chemoattractant protein-1 (MCP-1), transforming growth factor-beta (TGF-β), vascular cell adhesion molecule 1 (VCAM-1) and vascular endothelial growth factor (VEGF). Secretion of the studied molecules from MC treated with dialysates was increased: by 96% for IL-6 (P < 0.01), 34% for MCP-1(P < 0.01), 24% for TGF-β (P < 0.01), 27% for VCAM-1 (P < 0.01), and by 15% for VEGF (P < 0.01). Sulodexide reduced the stimulatory effect of the dialysates on the intracellular generation of free radicals, genes expression and secretory activity of MC. These cells exposed to the dialysates showed increased synthesis of total protein (by 216%, P < 0.005) and collagen (by 264%, P < 0.005), as compared to standard culture medium. Supplementation of the dialysates with sulodexide resulted in weaker stimulation of collagen synthesis (-21% versus dialysate). We concluded that peritoneal dialysate changes the genes expression and phenotype of MC to a proinflammatory, profibrotic and proangiogenic one. Sulodexide reduces these negative effects of the dialysate.
This article was published in the following journal.
Name: Journal of physiology and pharmacology : an official journal of the Polish Physiological Society
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Portable peritoneal dialysis using the continuous (24 hours a day, 7 days a week) presence of peritoneal dialysis solution in the peritoneal cavity except for periods of drainage and instillation of fresh solution.
Disorder characterized by a wide range of structural changes in PERITONEUM, resulting from fibrogenic or inflammatory processes. Peritoneal fibrosis is a common complication in patients receiving PERITONEAL DIALYSIS and contributes to its gradual decrease in efficiency.
Natural openings in the subdiaphragmatic lymphatic plexus in the PERITONEUM, delimited by adjacent mesothelial cells. Peritoneal stomata constitute the principal pathways for the drainage of intraperitoneal contents from the PERITONEAL CAVITY to the LYMPHATIC SYSTEM.
Uptake of substances from the PERITONEAL CAVITY.
Washing out of the peritoneal cavity. The procedure is a diagnostic as well as a therapeutic technique following abdominal trauma or inflammation.
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