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- W1994203486 abstract "Purpose Paricalcitol improves the inflammatory status of hemodialysis patients. PAF is a strong inflammatory mediator which is produced during hemodialysis. We studied the effects of paricalcitol on PAF and other inflammatory mediators implicated in chronic kidney disease (CKD). Methods We examined the in vitro effects of paricalcitol on PAF/thrombin-induced aggregation as well as on the activities of PAF-basic metabolic enzymes, lyso-PAF acetyltransferase (Lyso-PAF-AT), DTT-insensitive CDP-choline: 1-alkyl-2-acetyl-sn-glycerol cholinephospho-transferase (PAF-CPT) and PAF-acetylhydrolase (PAF-AH) in blood cells from healthy volunteers. In addition, the in vivo effects of paricalcitol on the above these enzymes were examined in plasma and blood cells of hemodialysis patients who had not received any type of vitamin D treatment during the last three months before and after receiving paricalcitol for a month. Finally, IL-12p70, IL-1β, IL-6, IL-8 and TNF-α were measured. Results Paricalcitol inhibited in vitro PAF/thrombin-induced platelet aggregation and the inhibitory effect was comparable with that of PAF/thrombin antagonists. In addition, paricalcitol inhibited in vitro PAF-CPT activity in platelets and leukocytes and increased PAF-AH activity in leukocytes, while much higher concentrations of paricalcitol were needed to inhibit Lyso-PAF-AT activity. Similarly, in hemodialysis patients, paricalcitol treatment reduced PAF-CPT activity in platelets and leukocytes and increased PAF-AH activity in leukocytes, while it could not influence Lyso-PAF-AT activity. On the other hand, paricalcitol therapy reduced IL-8, IL-1β, and TNF-α. Conclusions These results further support the beneficial effects of vitamin D treatment in hemodialysis patients, since it strongly affects PAF/thrombin activities, PAF-metabolism, and IL-8, IL-1β and TNF-α circulating levels." @default.
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- W1994203486 date "2013-01-18" @default.
- W1994203486 modified "2023-10-16" @default.
- W1994203486 title "Paricalcitol Effects on Activities and Metabolism of Platelet Activating Factor and on Inflammatory Cytokines in Hemodialysis Patients" @default.
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- W1994203486 doi "https://doi.org/10.5301/ijao.5000187" @default.
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