BACKGROUND AND OBJECTIVES: Plasma protein pentraxin 3 concentrations are elevated in a wide range of diseased states. However, no study has evaluated protein pentraxin 3 in patients with chronic kidney disease. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: Plasma protein pentraxin 3 concentrations were analyzed in relation to GFR, inflammation, cardiovascular disease, and protein-energy wasting in 71 patients with stages 3 to 4 chronic kidney disease, 276 patients with stage 5 chronic kidney disease, and 61 control subjects. Survival (5 yr) in patients with stage 5 chronic kidney disease was analyzed in relation to protein pentraxin 3 levels. RESULTS: Both patient groups with chronic kidney disease had higher protein pentraxin 3 concentrations than control subjects, with the highest concentration in patients with stage 5 chronic kidney disease. In all patients with chronic kidney disease, protein pentraxin 3 correlated negatively with GFR and positively with inflammatory markers. Patients with protein-energy wasting, inflammation, and cardiovascular disease had higher concentrations of protein pentraxin 3 than their counterparts. Patients with high protein pentraxin 3 levels had higher all-cause and cardiovascular mortality. After adjustment for age, gender, C-reactive protein, and cardiovascular disease, all-cause mortality was still significantly higher in patients with high protein pentraxin 3. Finally, protein pentraxin 3 showed a predictive value of mortality similar to that of IL-6 and better than C-reactive protein. CONCLUSION: Plasma protein pentraxin 3 increases as GFR declines and is associated with the presence of cardiovascular disease and protein-energy wasting. Furthermore, in patients with chronic kidney disease, elevated protein pentraxin 3 predicted all-cause mortality.
BACKGROUND AND OBJECTIVES: Plasma protein pentraxin 3 concentrations are elevated in a wide range of diseased states. However, no study has evaluated protein pentraxin 3 in patients with chronic kidney disease. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: Plasma protein pentraxin 3 concentrations were analyzed in relation to GFR, inflammation, cardiovascular disease, and protein-energy wasting in 71 patients with stages 3 to 4 chronic kidney disease, 276 patients with stage 5 chronic kidney disease, and 61 control subjects. Survival (5 yr) in patients with stage 5 chronic kidney disease was analyzed in relation to protein pentraxin 3 levels. RESULTS: Both patient groups with chronic kidney disease had higher protein pentraxin 3 concentrations than control subjects, with the highest concentration in patients with stage 5 chronic kidney disease. In all patients with chronic kidney disease, protein pentraxin 3 correlated negatively with GFR and positively with inflammatory markers. Patients with protein-energy wasting, inflammation, and cardiovascular disease had higher concentrations of protein pentraxin 3 than their counterparts. Patients with high protein pentraxin 3 levels had higher all-cause and cardiovascular mortality. After adjustment for age, gender, C-reactive protein, and cardiovascular disease, all-cause mortality was still significantly higher in patients with high protein pentraxin 3. Finally, protein pentraxin 3 showed a predictive value of mortality similar to that of IL-6 and better than C-reactive protein. CONCLUSION: Plasma protein pentraxin 3 increases as GFR declines and is associated with the presence of cardiovascular disease and protein-energy wasting. Furthermore, in patients with chronic kidney disease, elevated protein pentraxin 3 predicted all-cause mortality.
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