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Changes in serum inflammatory markers are associated with changes in apolipoprotein A1 but not B after the initiation of dialysis
Changes in serum inflammatory markers are associated with changes in apolipoprotein A1 but not B after the initiation of dialysis NEPHROLOGY DIALYSIS TRANSPLANTATION Kaysen, G. A., Dalrymple, L. S., Grimes, B., Chertow, G. M., Kornak, J., Johansen, K. L. 2014; 29 (2): 430-437Abstract
Few studies have examined the changes in lipoproteins over time and how inflammation is associated with lipoprotein concentrations among patients with end-stage renal disease on dialysis. One possible explanation for the association of low LDL cholesterol concentration and adverse outcomes is that inflammation reduces selected apolipoprotein concentrations.Serum samples were collected from a subsample of patients enrolled into the Comprehensive Dialysis Study every 3 months for up to 1 year. We examined the relation between temporal patterns in levels of inflammatory markers and changes in apolipoproteins (apo) A1 and B and the apo B/A1 ratio using linear mixed effects modeling and adjusting for potential confounders.We enrolled 266 participants from 56 dialysis facilities. The mean age was 62 years, 45% were women and 26% were black. Apo A1 was lower among patients with higher Quetelet's (body mass) index (BMI), diabetes mellitus and atherosclerosis. Apo B was lower among older patients, patients with higher serum creatinine and patients with lower BMI. Over the course of a year, apo A1 changed inversely with serum concentrations of the acute phase proteins C-reactive protein (CRP) and a1 acid glycoprotein (a1AG), while apo B did not. Changes in a1AG were more strongly associated with changes in apolipoprotein concentrations than were changes in CRP; increases in a1AG were associated with decreases in apo A1 and increases in the apo B/A1 ratio.Changes in inflammatory markers were associated with changes in apo A1, but not apo B over 1 year, suggesting that reductions in high-density lipoprotein cholesterol are associated with inflammation, either of which could mediate cardiovascular risk, but not supporting a hypothesis linking increased risk of low levels of apo B containing lipoproteins to the risk associated with inflammation.
View details for DOI 10.1093/ndt/gft370
View details for Web of Science ID 000331404100028
View details for PubMedCentralID PMC3910339