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      Call for Papers: Green Renal Replacement Therapy: Caring for the Environment

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      About Blood Purification: 3.0 Impact Factor I 5.6 CiteScore I 0.83 Scimago Journal & Country Rank (SJR)

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      Erythropoiesis-stimulating agents (ESA) for preventing the progression of chronic kidney disease: a meta-analysis of 19 studies.

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      Journal: American journal of nephrology
      Keywords: Anemia, blood, complications, Blood Pressure, Creatinine, Disease Progression, Drug Administration Schedule, Glomerular Filtration Rate, Hematinics, therapeutic use, Hemoglobins, chemistry, Humans, Kidney Failure, Chronic, drug therapy, physiopathology, Proteinuria, metabolism, Randomized Controlled Trials as Topic, Treatment Outcome

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          Abstract

          The effect of anemia correction on kidney function in chronic kidney disease (CKD) patients remains unclear. As 19-40% of patients with CKD receive an erythropoiesis-stimulating agent (ESA), this is a potentially important consideration. We conducted a systematic review and meta-analysis of randomized trials to January 1, 2014 in adult patients with CKD stages 1 to 4. randomized controlled trials of at least 2 months duration. Patients were allocated to ESA versus placebo, no treatment, or different ESA doses with the purpose of achieving a higher versus a lower hemoglobin target. The analyzed outcomes were the need for renal replacement therapy, doubling of serum creatinine, change in GFR (ml/min), mortality and withdrawal of treatment due to adverse events. A total of 19 trials (n = 8,129 participants with CKD stage 1-4) were reviewed. There was no difference in the risk of end-stage kidney disease (RR, 0.97 [CI 0.83-1.20], 17 trials, 8,104 participants), change in GFR (Mean Difference [MD] -0.45 [-2.21, 1.31], 9 trials, 1,848 participants) or withdrawal of treatment due to adverse events (RR, 1.18 [CI 0.77-1.81], 10 trials, n = 1,958 participants) for patients at higher hemoglobin (Hb) targets. Furthermore, no statistically significant differences in mortality (Risk Ratio [RR] 1.10 [CI 0.90-1.35], 16 trials, n = 8,082 participants) were observed. Key Messages: There is no evidence that ESA treatment affects renal function in patients with CKD. Use of these agents should not therefore be influenced by considerations about influencing CKD progression.

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          Correction of anemia with epoetin alfa in chronic kidney disease.

          Ajay K. Singh, Lynda Szczech, Kezhen L Tang … (2006)
          Anemia, a common complication of chronic kidney disease, usually develops as a consequence of erythropoietin deficiency. Recombinant human erythropoietin (epoetin alfa) is indicated for the correction of anemia associated with this condition. However, the optimal level of hemoglobin correction is not defined. In this open-label trial, we studied 1432 patients with chronic kidney disease, 715 of whom were randomly assigned to receive a dose of epoetin alfa targeted to achieve a hemoglobin level of 13.5 g per deciliter and 717 of whom were assigned to receive a dose targeted to achieve a level of 11.3 g per deciliter. The median study duration was 16 months. The primary end point was a composite of death, myocardial infarction, hospitalization for congestive heart failure (without renal replacement therapy), and stroke. A total of 222 composite events occurred: 125 events in the high-hemoglobin group, as compared with 97 events in the low-hemoglobin group (hazard ratio, 1.34; 95% confidence interval, 1.03 to 1.74; P=0.03). There were 65 deaths (29.3%), 101 hospitalizations for congestive heart failure (45.5%), 25 myocardial infarctions (11.3%), and 23 strokes (10.4%). Seven patients (3.2%) were hospitalized for congestive heart failure and myocardial infarction combined, and one patient (0.5%) died after having a stroke. Improvements in the quality of life were similar in the two groups. More patients in the high-hemoglobin group had at least one serious adverse event. The use of a target hemoglobin level of 13.5 g per deciliter (as compared with 11.3 g per deciliter) was associated with increased risk and no incremental improvement in the quality of life. (ClinicalTrials.gov number, NCT00211120 [ClinicalTrials.gov].). Copyright 2006 Massachusetts Medical Society.
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            A trial of darbepoetin alfa in type 2 diabetes and chronic kidney disease.

            Marc Pfeffer, Emmanuel A. Burdmann, Chao-Yin Chen … (2009)
            Anemia is associated with an increased risk of cardiovascular and renal events among patients with type 2 diabetes and chronic kidney disease. Although darbepoetin alfa can effectively increase hemoglobin levels, its effect on clinical outcomes in these patients has not been adequately tested. In this study involving 4038 patients with diabetes, chronic kidney disease, and anemia, we randomly assigned 2012 patients to darbepoetin alfa to achieve a hemoglobin level of approximately 13 g per deciliter and 2026 patients to placebo, with rescue darbepoetin alfa when the hemoglobin level was less than 9.0 g per deciliter. The primary end points were the composite outcomes of death or a cardiovascular event (nonfatal myocardial infarction, congestive heart failure, stroke, or hospitalization for myocardial ischemia) and of death or end-stage renal disease. Death or a cardiovascular event occurred in 632 patients assigned to darbepoetin alfa and 602 patients assigned to placebo (hazard ratio for darbepoetin alfa vs. placebo, 1.05; 95% confidence interval [CI], 0.94 to 1.17; P=0.41). Death or end-stage renal disease occurred in 652 patients assigned to darbepoetin alfa and 618 patients assigned to placebo (hazard ratio, 1.06; 95% CI, 0.95 to 1.19; P=0.29). Fatal or nonfatal stroke occurred in 101 patients assigned to darbepoetin alfa and 53 patients assigned to placebo (hazard ratio, 1.92; 95% CI, 1.38 to 2.68; P<0.001). Red-cell transfusions were administered to 297 patients assigned to darbepoetin alfa and 496 patients assigned to placebo (P<0.001). There was only a modest improvement in patient-reported fatigue in the darbepoetin alfa group as compared with the placebo group. The use of darbepoetin alfa in patients with diabetes, chronic kidney disease, and moderate anemia who were not undergoing dialysis did not reduce the risk of either of the two primary composite outcomes (either death or a cardiovascular event or death or a renal event) and was associated with an increased risk of stroke. For many persons involved in clinical decision making, this risk will outweigh the potential benefits. (ClinicalTrials.gov number, NCT00093015.) 2009 Massachusetts Medical Society
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              Chronic kidney disease and mortality risk: a systematic review.

              Marcello Tonelli, Natasha Wiebe, Bruce Culleton … (2006)
              Current guidelines identify people with chronic kidney disease (CKD) as being at high risk for cardiovascular and all-cause mortality. Because as many as 19 million Americans may have CKD, a comprehensive summary of this risk would be potentially useful for planning public health policy. A systematic review of the association between non-dialysis-dependent CKD and the risk for all-cause and cardiovascular mortality was conducted. Patient- and study-related characteristics that influenced the magnitude of these associations also were investigated. MEDLINE and EMBASE databases were searched, and reference lists through December 2004 were consulted. Authors of 10 primary studies provided additional data. Cohort studies or cohort analyses of randomized, controlled trials that compared mortality between those with and without chronically reduced kidney function were included. Studies were excluded from review when participants were followed for < 1 yr or had ESRD. Two reviewers independently extracted data on study setting, quality, participant and renal function characteristics, and outcomes. Thirty-nine studies that followed a total of 1,371,990 participants were reviewed. The unadjusted relative risk for mortality in participants with reduced kidney function compared with those without ranged from 0.94 to 5.0 and was significantly more than 1.0 in 93% of cohorts. Among the 16 studies that provided suitable data, the absolute risk for death increased exponentially with decreasing renal function. Fourteen cohorts described the risk for mortality from reduced kidney function, after adjustment for other established risk factors. Although adjusted relative hazards were consistently lower than unadjusted relative risks (median reduction 17%), they remained significantly more than 1.0 in 71% of cohorts. This review supports current guidelines that identify individuals with CKD as being at high risk for cardiovascular mortality. Determining which interventions best offset this risk remains a health priority.
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                Author and article information

                Journal
                PubMed ID:: 25323019
                DOI:: 10.1159/000366025

                ScienceOpen disciplines: Chemistry
                Keywords: Anemia,blood,complications,Blood Pressure,Creatinine,Disease Progression,Drug Administration Schedule,Glomerular Filtration Rate,Hematinics,therapeutic use,Hemoglobins,chemistry,Humans,Kidney Failure, Chronic,drug therapy,physiopathology,Proteinuria,metabolism,Randomized Controlled Trials as Topic,Treatment Outcome
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                ScienceOpen disciplines: Chemistry
                Keywords: Anemia, blood, complications, Blood Pressure, Creatinine, Disease Progression, Drug Administration Schedule, Glomerular Filtration Rate, Hematinics, therapeutic use, Hemoglobins, chemistry, Humans, Kidney Failure, Chronic, drug therapy, physiopathology, Proteinuria, metabolism, Randomized Controlled Trials as Topic, Treatment Outcome

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