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

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      Elevated Pro-Brain Natriuretic Peptide, Troponin T and Malnutrition Inflammatory Score in Chronic Hemodialysis Patients with Overt Cardiovascular Disease

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          Abstract

          Background: We assessed the relationship between pro-brain natriuretic peptide (pro-BNP), troponin T (TropT) and nutritional status. Methods: A total of 48 chronic hemodialysis patients were grouped according to the presence [group A (GA); n = 24] or not [group B (GB)] of cardiovascular disease. Results: Compared to GB subjects, GA subjects were older, had been on hemodialysis for a longer period and had higher prevalences of vascular grafts, hypertension and elevated C-reactive protein (CRP) [GA vs. GB: 1.1 (range 0.1–32.9) vs. 0.4 (0–28.1) mg/dl; p = 0.028], malnutrition inflammatory score (MIS) (GA vs. GB: 7.50 vs. 4.00; p = 0.001), pro-BNP [GA vs. GB: 6,760 (601–103,200) vs. 686 (75–83,700) pg/ml; p < 0.001] and TropT [GA vs. GB: 0.3650 (0.011–0.199) vs. 0.010 (0.0–0.290) ng/ml; p = 0.002]. Pro-BNP correlated with TropT (rho 0.539; p < 0.001), MIS (rho 0.502; p < 0.0001), homocysteine (rho 0.321; p = 0.13) and CRP (rho 0.511; p < 0.0001). Pro-BNP levels were lower in GB patients as the body mass index increased; the opposite occurred in GA. Conclusions: Patients with cardiovascular disease had elevated pro-BNP and TropT levels. In patients without cardiovascular disease, malnutrition and inflammation were associated with vascular prostheses, while pro-BNP was lower in obese patients.

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          Normalization of hemoglobin level in patients with chronic kidney disease and anemia.

          Tilman B. Drueke, Francesco Locatelli, Naomi Clyne … (2006)
          Whether correction of anemia in patients with stage 3 or 4 chronic kidney disease improves cardiovascular outcomes is not established. We randomly assigned 603 patients with an estimated glomerular filtration rate (GFR) of 15.0 to 35.0 ml per minute per 1.73 m2 of body-surface area and mild-to-moderate anemia (hemoglobin level, 11.0 to 12.5 g per deciliter) to a target hemoglobin value in the normal range (13.0 to 15.0 g per deciliter, group 1) or the subnormal range (10.5 to 11.5 g per deciliter, group 2). Subcutaneous erythropoietin (epoetin beta) was initiated at randomization (group 1) or only after the hemoglobin level fell below 10.5 g per deciliter (group 2). The primary end point was a composite of eight cardiovascular events; secondary end points included left ventricular mass index, quality-of-life scores, and the progression of chronic kidney disease. During the 3-year study, complete correction of anemia did not affect the likelihood of a first cardiovascular event (58 events in group 1 vs. 47 events in group 2; hazard ratio, 0.78; 95% confidence interval, 0.53 to 1.14; P=0.20). Left ventricular mass index remained stable in both groups. The mean estimated GFR was 24.9 ml per minute in group 1 and 24.2 ml per minute in group 2 at baseline and decreased by 3.6 and 3.1 ml per minute per year, respectively (P=0.40). Dialysis was required in more patients in group 1 than in group 2 (127 vs. 111, P=0.03). General health and physical function improved significantly (P=0.003 and P<0.001, respectively, in group 1, as compared with group 2). There was no significant difference in the combined incidence of adverse events between the two groups, but hypertensive episodes and headaches were more prevalent in group 1. In patients with chronic kidney disease, early complete correction of anemia does not reduce the risk of cardiovascular events. (ClinicalTrials.gov number, NCT00321919 [ClinicalTrials.gov].). Copyright 2006 Massachusetts Medical Society.
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            Strong association between malnutrition, inflammation, and atherosclerosis in chronic renal failure.

            P Stenvinkel, O Heimbürger, F Paultre … (1999)
            Atherosclerotic cardiovascular disease and malnutrition are widely recognized as leading causes of the increased morbidity and mortality observed in uremic patients. C-reactive protein (CRP), an acute-phase protein, is a predictor of cardiovascular mortality in nonrenal patient populations. In chronic renal failure (CRF), the prevalence of an acute-phase response has been associated with an increased mortality. One hundred and nine predialysis patients (age 52 +/- 1 years) with terminal CRF (glomerular filtration rate 7 +/- 1 ml/min) were studied. By using noninvasive B-mode ultrasonography, the cross-sectional carotid intima-media area was calculated, and the presence or absence of carotid plaques was determined. Nutritional status was assessed by subjective global assessment (SGA), dual-energy x-ray absorptiometry (DXA), serum albumin, serum creatinine, serum urea, and 24-hour urine urea excretion. The presence of an inflammatory reaction was assessed by CRP, fibrinogen (N = 46), and tumor necrosis factor-alpha (TNF-alpha; N = 87). Lipid parameters, including Lp(a) and apo(a)-isoforms, as well as markers of oxidative stress (autoantibodies against oxidized low-density lipoprotein and vitamin E), were also determined. Compared with healthy controls, CRF patients had an increased mean carotid intima-media area (18.3 +/- 0.6 vs. 13.2 +/- 0.7 mm2, P or = 10 mg/liter). Malnourished patients had higher CRP levels (23 +/- 3 vs. 13 +/- 2 mg/liter, P < 0.01), elevated calculated intima-media area (20.2 +/- 0.8 vs. 16.9 +/- 0.7 mm2, P < 0.01) and a higher prevalence of carotid plaques (90 vs. 60%, P < 0.0001) compared with well-nourished patients. During stepwise multivariate analysis adjusting for age and gender, vitamin E (P < 0.05) and CRP (P < 0.05) remained associated with an increased intima-media area. The presence of carotid plaques was significantly associated with age (P < 0.001), log oxidized low-density lipoprotein (oxLDL; P < 0.01), and small apo(a) isoform size (P < 0.05) in a multivariate logistic regression model. These results indicate that the rapidly developing atherosclerosis in advanced CRF appears to be caused by a synergism of different mechanisms, such as malnutrition, inflammation, oxidative stress, and genetic components. Apart from classic risk factors, low vitamin E levels and elevated CRP levels are associated with an increased intima-media area, whereas small molecular weight apo(a) isoforms and increased levels of oxLDL are associated with the presence of carotid plaques.
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              Biomarkers in heart failure.

              Eugene Braunwald (2008)
              Article 0 comments Cited 293 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (publisher-id): NEC
                Journal ID (nlm-ta): Nephron Clin Pract
                Journal ID (doi): 10.1159/issn.1660-2110
                Title: Nephron Clinical Practice
                Publisher: S. Karger AG
                ISSN (Electronic): 1660-2110
                Publication date Subscription-year: 2011
                Publication date (Print): February 2011
                Publication date (Electronic): 30 August 2010
                Volume: 117
                Issue: 3
                Pages: c198-c205
                Affiliations
                aServicio de Nefrología, bLaboratorio Central, cServicio de Alimentación, dServicio de Clínica Médica, eServicio de Medicina Nuclear, Hospital Británico de Buenos Aires, Buenos Aires, Argentina; fBaxter Novum, Karolinska Institutet, Stockholm, Sweden
                Author notes
                *Hernán Trimarchi, Nephrology Service, Hospital Británico de Buenos Aires, Perdriel 74, Buenos Aires 1280 (Argentina), Tel. +54 114 309 6400, Fax +54 114 304 3393, E-Mail htrimarchi@hotmail.com
                Article
                Publisher ID: 320195 Other ID: Nephron Clin Pract 2011;117:c198–c205
                DOI: 10.1159/000320195
                PubMed ID: 20805692
                SO-VID: 47e6aa81-c3d0-4a77-b0b9-3b7648acf494
                Copyright © © 2010 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 : 08 March 2010
                Date accepted : 29 May 2010
                Page count
                Tables: 7, References: 58, Pages: 8
                Categories
                Subject: Original Paper

                ScienceOpen disciplines: Cardiovascular Medicine,Nephrology
                Keywords: Pro-brain natriuretic peptide,Troponin T,Inflammation,Malnutrition,Malnutrition inflammatory score,Hemodialysis,Cardiovascular disease,End-stage renal disease
                Data availability:
                ScienceOpen disciplines: Cardiovascular Medicine, Nephrology
                Keywords: Pro-brain natriuretic peptide, Troponin T, Inflammation, Malnutrition, Malnutrition inflammatory score, Hemodialysis, Cardiovascular disease, End-stage renal disease

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