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      Autoantibodies against Oxidized LDL in Chronic Renal Failure: Role of Renal Function, Diet, and Lipids

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          Abstract

          Lipid peroxidation (LP) has recently been suggested to trigger the atherosclerotic process as well as to worsen the progression of renal disease. Autoantibodies against oxidized low-density lipoproteins (Ox-LDLAb) were considered to provide a sensitive marker to detect LDL oxidation in vivo. To date few studies have been reported on Ox-LDLAb levels in patients with different degrees of renal failure. The aim of this study was to evaluate the influences of renal function, dietary manipulation, and lipids on Ox-LDLAb concentrations in uremic patients either on conservative or replacement therapy. Seventy-one patients (42 males, 29 females) aged 60 ± 19 years with chronic renal failure (CRF) of different etiology and degree were divided into four groups according to serum creatinine levels [sCr(mg/dl)] and diet: CRF I ≧1.5–3.0, CRF II > 3.0–5.5, and CRF III > 5.5 were all patients on a conventional low-protein diet, while a fourth group included patients on a vegetarian diet supplemented with keto analogues and amino acids (CRF SD >3.0). A further group was represented by patients on dialysis therapy. All patients were examined for Ox-LDLAb, triglycerides (TG), total cholesterol, HDL and LDL cholesterol, and apolipoproteins Apo A1, Apo B, and Lp(a). The results were compared with those of 20 controls (9 males and 11 females) aged 52 ± 11 years with sCr <1.5 mg/dl. Ox-LDLAb increased, although not significantly, with TG and Lp(a) from the early stages of CRF along with the deterioration of renal function. However, TG and Lp(a) levels were significantly higher in all groups of patients except those on vegetarian diet (CRF SD). This group also showed the lowest Ox-LDLAb levels. No relationship was observed between lipids or apolipoproteins and Ox-LDLAb. Hyperlipidemic patients did not show higher Ox-LDLAb levels than normolipidemics. Our results show a progressive increase of LP as the renal function declines, which may account for the increased risk of cardiovascular disease reported in uremia. Dialysis does not correct significantly the oxidative state observed in patients with end-stage renal disease. Vegan diet, by reducing LP, TG, and Lp(a), is supposed to decrease the risk of cardiovascular disease and worth being reconsidered as an alternative effective therapeutic tool in patients with advanced CRF.

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          Most cited references 2

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          Autoantibody against oxidised LDL and progression of carotid atherosclerosis

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            The determination of lipoprotein Lp(a) by rate and endpoint nephelometry

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              Author and article information

              Journal
              NEF
              Nephron
              10.1159/issn.1660-8151
              Nephron
              S. Karger AG
              1660-8151
              2235-3186
              2001
              2001
              16 February 2001
              : 87
              : 2
              : 127-133
              Affiliations
              Nephrology and Dialysis Units, aAzienda Ospedaliera Careggi and bAzienda Sanitaria Locale 10, and cDepartment of Clinical Chemistry, Azienda Sanitaria Locale 10, Florence, Italy
              Article
              45900 Nephron 2001;87:127–133
              10.1159/000045900
              11244306
              © 2001 S. Karger AG, Basel

              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.

              Page count
              Figures: 3, Tables: 2, References: 35, Pages: 7
              Product
              Self URI (application/pdf): https://www.karger.com/Article/Pdf/45900
              Categories
              Original Paper

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