Additive Effects of Soluble TWEAK and Inflammation on Mortality in Hemodialysis Patients

Chronic kidney disease (CKD) is characterized by an exceptionally high mortality rate, primarily due to cardiovascular disease. Reduced soluble TNF-like weak inducer of apoptosis (sTWEAK) plasma levels have been reported both in patients with subclinical atherosclerosis and CKD. A cross-sectional st...

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Veröffentlicht in:Clinical journal of the American Society of Nephrology 2009-01, Vol.4 (1), p.110-118
Hauptverfasser: Carrero, Juan J, Ortiz, Alberto, Qureshi, Abdul R, Martín-Ventura, Jose L, Bárány, Peter, Heimbürger, Olof, Marrón, Belén, Metry, George, Snaedal, Sunna, Lindholm, Bengt, Egido, Jesús, Stenvinkel, Peter, Blanco-Colio, Luis M
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container_issue 1
container_start_page 110
container_title Clinical journal of the American Society of Nephrology
container_volume 4
creator Carrero, Juan J
Ortiz, Alberto
Qureshi, Abdul R
Martín-Ventura, Jose L
Bárány, Peter
Heimbürger, Olof
Marrón, Belén
Metry, George
Snaedal, Sunna
Lindholm, Bengt
Egido, Jesús
Stenvinkel, Peter
Blanco-Colio, Luis M
description Chronic kidney disease (CKD) is characterized by an exceptionally high mortality rate, primarily due to cardiovascular disease. Reduced soluble TNF-like weak inducer of apoptosis (sTWEAK) plasma levels have been reported both in patients with subclinical atherosclerosis and CKD. A cross-sectional study was conducted in 218 prevalent patients (121 men; 63 +/- 14 yr) undergoing hemodialysis (HD). sTWEAK levels in relation with the patients' outcome were studied. sTWEAK plasma levels were 208 [(165 to 272) pg/ml, median interquartile range], significantly lower than healthy controls (P < 0.0001). sTWEAK was negatively associated with inflammatory markers, such as C-reactive protein and IL-6. Overall mortality was assessed after an average follow-up of 31 mo, during which 81 patients died. After controlling for potential confounding variables, patients in the upper tertile of sTWEAK plasma levels had an increased risk of cardiovascular and all-cause mortality. A significant interaction effect between sTWEAK and IL-6 levels was found [synergy index: 2.19 (0.80, 5.93)]. Thus, the association of sTWEAK with mortality was strongest in patients with inflammation (defined as IL-6 > 7.0 pg/ml), in whom high sTWEAK strongly predicted cardiovascular and all-cause mortality. These results were confirmed in a second cohort of HD patients. The concurrent presence of elevated sTWEAK plasma concentrations and an inflammatory environment have additive effects on mortality in HD patients. Further studies on the potential different role of sTWEAK in health and disease are warranted.
doi_str_mv 10.2215/CJN.02790608
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Reduced soluble TNF-like weak inducer of apoptosis (sTWEAK) plasma levels have been reported both in patients with subclinical atherosclerosis and CKD. A cross-sectional study was conducted in 218 prevalent patients (121 men; 63 +/- 14 yr) undergoing hemodialysis (HD). sTWEAK levels in relation with the patients' outcome were studied. sTWEAK plasma levels were 208 [(165 to 272) pg/ml, median interquartile range], significantly lower than healthy controls (P &lt; 0.0001). sTWEAK was negatively associated with inflammatory markers, such as C-reactive protein and IL-6. Overall mortality was assessed after an average follow-up of 31 mo, during which 81 patients died. After controlling for potential confounding variables, patients in the upper tertile of sTWEAK plasma levels had an increased risk of cardiovascular and all-cause mortality. A significant interaction effect between sTWEAK and IL-6 levels was found [synergy index: 2.19 (0.80, 5.93)]. 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Reduced soluble TNF-like weak inducer of apoptosis (sTWEAK) plasma levels have been reported both in patients with subclinical atherosclerosis and CKD. A cross-sectional study was conducted in 218 prevalent patients (121 men; 63 +/- 14 yr) undergoing hemodialysis (HD). sTWEAK levels in relation with the patients' outcome were studied. sTWEAK plasma levels were 208 [(165 to 272) pg/ml, median interquartile range], significantly lower than healthy controls (P &lt; 0.0001). sTWEAK was negatively associated with inflammatory markers, such as C-reactive protein and IL-6. Overall mortality was assessed after an average follow-up of 31 mo, during which 81 patients died. After controlling for potential confounding variables, patients in the upper tertile of sTWEAK plasma levels had an increased risk of cardiovascular and all-cause mortality. A significant interaction effect between sTWEAK and IL-6 levels was found [synergy index: 2.19 (0.80, 5.93)]. Thus, the association of sTWEAK with mortality was strongest in patients with inflammation (defined as IL-6 &gt; 7.0 pg/ml), in whom high sTWEAK strongly predicted cardiovascular and all-cause mortality. These results were confirmed in a second cohort of HD patients. The concurrent presence of elevated sTWEAK plasma concentrations and an inflammatory environment have additive effects on mortality in HD patients. Further studies on the potential different role of sTWEAK in health and disease are warranted.</abstract><cop>United States</cop><pub>American Society of Nephrology</pub><pmid>18945991</pmid><doi>10.2215/CJN.02790608</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record>
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subjects Aged
Biomarkers - blood
Cardiovascular Diseases - blood
Cardiovascular Diseases - etiology
Cardiovascular Diseases - mortality
Case-Control Studies
Chronic Disease
Cross-Sectional Studies
Cytokine TWEAK
Dialysis
Female
Humans
Inflammation - blood
Inflammation - etiology
Inflammation - mortality
Inflammation Mediators - blood
Interleukin-6 - blood
Kaplan-Meier Estimate
Kidney Diseases - blood
Kidney Diseases - complications
Kidney Diseases - mortality
Kidney Diseases - therapy
Male
Middle Aged
Proportional Hazards Models
Renal Dialysis - mortality
Reproducibility of Results
Risk Assessment
Sweden - epidemiology
Time Factors
Tumor Necrosis Factors - blood
Up-Regulation
title Additive Effects of Soluble TWEAK and Inflammation on Mortality in Hemodialysis Patients
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