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      Serum Albumin, Body Weight and Inflammatory Parameters in Chronic Hemodialysis Patients: A Three-Year Longitudinal Study

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          Abstract

          Backgrounds and Aims: The present study aimed at making prospective longitudinal measurements of nutritional and inflammatory parameters to determine whether nutritional and inflammatory status decline or increase over time in a cohort of prevalent hemodialysis patients, and to evaluate which factors influence eventual changes. Patients: 64 hemodialysis patients were followed at 0, 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, and 36 months. At each follow-up visit, dry body weight, serum albumin, serum total cholesterol, total white blood cells, total lymphocyte count, serum glucose, C-reactive protein, ferritin, fibrinogen, hemoglobin, and weekly erythropoietin dose were assessed. Main Outcome Measures: Changes in nutritional and inflammatory parameters over time. Results: 43 patients completed the study at 36 months. Mean serum albumin levels (g/dl) improved significantly between baseline (3.76 ± 0.24) and 36 months (3.93 ± 0.27) (F = 4.005; p = 0.0009). Dialytic age was significantly associated with changes of serum albumin (F = 2.797; p = 0.028). The mean dry weight slightly remained stable over time (F = 1.473; p = 1.0) as well as the level of total cholesterol (p = 0.77) and lymphocyte count (F = 1.539; p = 0.186). Over time, the levels of C-reactive protein tended to decrease, although the differences were not statistically significant (F = 1.332; p = 0.19). Over time, the serum level of fibrinogen (F = 0.422; p = 0.17) and ferritin (F = 0.314; p = 0.52) remained stable. The number of white blood cells significantly decreased over time (F = 4.691; p = 0.0079) and dialytic age (F = 3.214; p = 0.015) was the variable significantly associated with such decline. The hemoglobin levels (F = 1.423; p = 0.14) and the weekly erythropoietin dose did not change significantly during the study (F = 1.019; p = 0.61), nor did the serum glucose levels (F = 1.231; p = 0.10). Conclusion: These results support the hypothesis that end-stage renal disease and HD are not necessarily associated with deterioration of the nutritional status over time.

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          Mortality risk in hemodialysis patients and changes in nutritional indicators: DOPPS.

          Trinh Pifer, Keith McCullough, Friedrich Port … (2002)
          Nutritional status is strongly associated with outcomes among hemodialysis patients. We analyzed the independent predictive value of several readily measured nutritional indicators, including a modified subjective global assessment (mSGA), body mass index (BMI), serum albumin, serum creatinine, normalized protein catabolic rate (nPCR), serum bicarbonate, lymphocyte count, and neutrophil count, using baseline and six-month follow-up measurements. The study sample consisted of 7719 U.S. adult hemodialysis patients enrolled in the international Dialysis Outcomes and Practice Patterns Study (DOPPS), a prospective observational study that includes a random sample of hemodialysis patients from 145 dialysis facilities in the United States. Cox regression was used to estimate the relative risk of mortality associated with differences in measurements at baseline and six months later. Each analysis was adjusted for age, race, sex, and 15 summary comorbid conditions. Lower baseline measurements of mSGA, BMI, serum albumin, serum creatinine, and lymphocyte count were independently associated with significantly higher risk of mortality. During six-month follow-up, decreases in BMI, serum albumin, and serum creatinine were also associated with significantly higher mortality risk. The risk of mortality increased with higher baseline and six-month increases in neutrophil count. This study confirms that several readily-measured nutritional indicators predict mortality among hemodialysis patients and that changes in indicator values over six months provide additional important prognostic information. Interventions that modify these indicators of nutritional status may have an important impact on the survival of hemodialysis patients.
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            Uremic malnutrition is a predictor of death independent of inflammatory status.

            Yu Shyr, R Hakim, Kayser Cağlar … (2004)
            Several studies have pointed out the influence of nutritional parameters and/or indices of inflammation on morbidity and mortality. Often, these conditions coexist, and the relative importance of poor nutritional status and chronic inflammation in terms of predicting clinical outcomes in chronic hemodialysis (CHD) patients has not been clarified. We undertook a prospective cohort study analyzing time-dependent changes in several established nutritional and inflammatory markers, and their influence on mortality in 194 CHD patients (53% male, 36% white, 30% with diabetes mellitus, mean age 55.7 +/- 15.4 years) throughout a 57-month period. Serial measurements of serum concentrations of albumin, prealbumin, creatinine, transferrin, cholesterol, and C-reactive protein (CRP), as well as normalized protein catabolic rate, postdialysis weight, and phase angle and reactance by bioelectrical impedance analysis were performed every 3 months. Clinical outcomes were simultaneously assessed using indicators of mortality. Serum albumin, serum prealbumin, serum creatinine, and phase angle were significant predictors of all-cause mortality, even after adjustment for serum CRP concentrations. Serum CRP concentrations were not significantly associated with mortality. Serum albumin concentrations and phase angle were also independent predictors of cardiovascular deaths in the multivariate model. The nutritional status of CHD patients predicts mortality independent of concomitant presence or absence of inflammatory response. Prevention of, and timely intervention to treat uremic malnutrition by suitable means are necessary independent of the presence and/or therapy of inflammation in terms of improving clinical outcomes in CHD patients.
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              White blood cells as a novel mortality predictor in haemodialysis patients.

              D. Reddan, Terry Klassen, Joseph A Coladonato … (2003)
              Many conventional cardiovascular risk factors in the general population are not as predictive in end-stage renal disease (ESRD). As absolute neutrophil count and total white blood cell (WBC) count are associated with adverse cardiovascular outcomes and all-cause mortality, this analysis was undertaken to explore the associations of WBC variables with mortality risk in ESRD. Of a total study population of 44 114 ESRD patients receiving haemodialysis during 1998 at facilities operated by Fresenius Medical Care, North America, 25 661 patients who underwent differential white cell count and had complete follow-up were included. Information on case mix (age, gender, race), clinical (diabetes, body mass index), and laboratory variables (haematocrit, albumin, creatinine, potassium, calcium, phosphorus, bicarbonate, ferritin, transferrin saturation and differential WBC count) was obtained. Associations between lymphocyte count, neutrophil count and demographic and clinical variables were examined using linear regression. Associations between WBC variables and survival were estimated using Cox proportional hazard regression. A higher lymphocyte count was associated with higher serum albumin and creatinine, lower age and black race. High neutrophil count was associated with lower serum albumin and creatinine, younger age and white race (all Ps <0.0001). Cox proportional hazard regression showed an increased lymphocyte count was associated with reduced mortality risk [HR 0.86 (0.83-0.89) per 500/ml increase in lymphocyte count] and an increased neutrophil count was associated with increased mortality risk [HR 1.08 (1.06-1.09) per 1000/ml increase in neutrophil count]. An increased neutrophil count is strongly associated with, and reduced lymphocyte count associated less strongly with, many surrogates of both malnutrition and inflammation. An increased neutrophil count and reduced lymphocyte count are independent predictors of increased mortality risk in haemodialysis patients.
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                Author and article information

                Journal
                Journal ID (publisher-id): AJN
                Journal ID (nlm-ta): Am J Nephrol
                Journal ID (doi): 10.1159/issn.0250-8095
                Title: American Journal of Nephrology
                Publisher: S. Karger AG
                ISSN (Print): 0250-8095
                ISSN (Electronic): 1421-9670
                Publication date Subscription-year: 2008
                Publication date (Print): April 2008
                Publication date (Electronic): 14 December 2007
                Volume: 28
                Issue: 3
                Pages: 405-412
                Affiliations
                aIstituto di Clinica Chirurgica and bIstituto di Igiene, Università Cattolica del Sacro Cuore, Rome, Italy
                Article
                Publisher ID: 112597 Other ID: Am J Nephrol 2008;28:405–412
                DOI: 10.1159/000112597
                PubMed ID: 18087147
                SO-VID: 53adb8b0-13b9-4d2e-9852-4f949a7152bf
                Copyright © © 2007 S. Karger AG, Basel
                License:

                Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher. Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug. Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.

                History
                Date received : 05 July 2007
                Date accepted : 12 November 2007
                Page count
                Figures: 7, Tables: 2, References: 27, Pages: 8
                Categories
                Subject: Original Report: Patient-Oriented, Translational Research

                ScienceOpen disciplines: Cardiovascular Medicine,Nephrology
                Keywords: Serum albumin,Body weight,Inflammatory parameters,Longitudinal evaluation,Hemodialysis
                Data availability:
                ScienceOpen disciplines: Cardiovascular Medicine, Nephrology
                Keywords: Serum albumin, Body weight, Inflammatory parameters, Longitudinal evaluation, Hemodialysis

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