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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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      Association between Insulin Resistance and Carotid Arterial Stiffness in Nondiabetic Hemodialysis Patients

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          Abstract

          Background: Patients with end-stage renal disease are known to have insulin resistance and advanced arterial stiffness. The present study was undertaken to investigate whether insulin resistance was correlated with carotid arterial stiffness in hemodialysis patients. Methods: Eighty nondiabetic hemodialysis patients were recruited. Stiffness index β of the common carotid artery was assessed by ultrasound using echo-tracking system. Insulin resistance was evaluated by the homeostasis model assessment method (HOMA-IR). Serum albumin, lipid profile, calcium, phosphorus, intact parathyroid hormone, high-sensitivity C-reactive protein and oxidized low-density lipoprotein (ox-LDL) were also measured. Results: Patients with higher HOMA-IR levels had higher BMI, ox-LDL, and stiffness index β than patients with lower HOMA-IR levels. HOMA-IR was independently correlated with stiffness index β (β = 0.260, p = 0.016). BMI and ox-LDL were independent contributors to HOMA-IR. Conclusion: Insulin resistance assessed by HOMA-IR is closely associated with carotid arterial stiffness in nondiabetic hemodialysis patients.

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          Obesity/insulin resistance is associated with endothelial dysfunction. Implications for the syndrome of insulin resistance.

          H. O. Steinberg, H Chaker, R. Leaming … (1996)
          To test the hypothesis that obesity/insulin resistance impairs both endothelium-dependent vasodilation and insulin-mediated augmentation of endothelium-dependent vasodilation, we studied leg blood flow (LBF) responses to graded intrafemoral artery infusions of methacholine chloride (MCh) or sodium nitroprusside (SNP) during saline infusion and euglycemic hyperinsulinemia in lean insulin-sensitive controls (C), in obese insulin-resistant subjects (OB), and in subjects with non-insulin-dependent diabetes mellitus (NIDDM). MCh induced increments in LBF were approximately 40% and 55% lower in OB and NIDDM, respectively, as compared with C (P < 0.05). Euglycemic hyperinsulinemia augmented the LBF response to MCh by - 50% in C (P < 0.05 vs saline) but not in OB and NIDDM. SNP caused comparable increments in LBF in all groups. Regression analysis revealed a significant inverse correlation between the maximal LBF change in response to MCh and body fat content. Thus, obesity/insulin resistance is associated with (a) blunted endothelium-dependent, but normal endothelium-independent vasodilation and (b) failure of euglycemic hyperinsulinemia to augment endothelium-dependent vasodilation. Therefore, obese/insulin-resistant subjects are characterized by endothelial dysfunction and endothelial resistance to insulin's effect on enhancement of endothelium-dependent vasodilation. This endothelial dysfunction could contribute to the increased risk of atherosclerosis in obese insulin-resistant subjects.
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            Chronic kidney disease as cause of cardiovascular morbidity and mortality.

            R Vanholder, Z Massy, A Argilés … (2005)
            To make an evidence-based evaluation of the relationship between kidney failure and cardiovascular risk, we reviewed the literature obtained from a PubMed search using pre-defined keywords related to both conditions and covering 18 years (1986 until end 2003). Eighty-five publications, covering 552 258 subjects, are summarized. All but three studies support a link between kidney dysfunction and cardiovascular risk. More importantly, the association is observed very early during the evolution of renal failure: an accelerated cardiovascular risk appears at varying glomerular filtration rate (GFR) cut-off values, which were >/=60 ml/min in at least 20 studies. Many studies lacked a clear definition of cardiovascular disease and/or used a single determination of serum creatinine or GFR as an index of kidney function, which is not necessarily corresponding to well-defined chronic kidney disease. In six studies, however, chronic kidney dysfunction and cardiovascular disease were well defined and the results of these confirm the impact of kidney dysfunction. It is concluded that there is an undeniable link between kidney dysfunction and cardiovascular risk and that the presence of even subtle kidney dysfunction should be considered as one of the conditions necessitating intensive prevention of this cardiovascular risk.
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              Aortic pulse wave velocity index and mortality in end-stage renal disease.

              Jacques Blacher, Michel E. Safar, Alain P Guerin … (2003)
              Aortic pulse wave velocity (PWV) is a strong independent predictor of overall and cardiovascular mortality in patients with end-stage renal disease (ESRD). Nevertheless, because age, blood pressure, heart rate, and gender are strong determinants of both arterial stiffness and mortality, the individual relevance of PWV measurements remains controversial. A cohort of 242 patients with ESRD undergoing hemodialysis was studied for a mean (+/- SD) duration of 78 +/- 46 months. At entry, together with standard clinical and biochemical analyses, PWV was measured using Doppler ultrasonography. On the basis of a nomogram established on 469 nonuremic subjects, a theoretical value of PWV was determined in ESRD patients according to their age, blood pressure, gender, and heart period. The PWV index (measured PWV - theoretical PWV) was then calculated for each individual ESRD patient. Based on Cox analysis, the PWV index, but neither pulse pressure nor cardiac mass, was a strong and independent predictor of both cardiovascular and overall mortality, together with age and time on dialysis before inclusion. Patients with positive (versus negative) PWV index had a twofold adjusted risk of mortality during the follow-up. Per each 1 meter/second PWV index increment, we observed a 34% (crude) and a 14% (adjusted) increase in both cardiovascular and overall mortality (P < 0.02 for all). In ESRD patients, the calculation of a PWV index provides information about cardiovascular and overall mortality risk with high predictive power, showing that PWV measurements provide discriminatory prognostic power over and above conventional cardiovascular risk factors.
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                Author and article information

                Journal
                Journal ID (publisher-id): BPU
                Journal ID (nlm-ta): Blood Purif
                Journal ID (doi): 10.1159/issn.0253-5068
                Title: Blood Purification
                Publisher: S. Karger AG
                ISSN (Print): 0253-5068
                ISSN (Electronic): 1421-9735
                Publication date Subscription-year: 2009
                Publication date (Print): October 2009
                Publication date (Electronic): 31 July 2009
                Volume: 28
                Issue: 3
                Pages: 193-199
                Affiliations
                Departments of aNephrology, bUltrasonic Medicine, and cLaboratory Medicine, ChaoYang Hospital, Capital Medical University, Beijing, China
                Article
                Publisher ID: 230810 Other ID: Blood Purif 2009;28:193–199
                DOI: 10.1159/000230810
                PubMed ID: 19648738
                SO-VID: eeacbb7d-4d58-466e-86c7-0cd640137588
                Copyright © © 2009 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 : 10 December 2008
                Date accepted : 13 March 2009
                Page count
                Figures: 1, Tables: 4, References: 49, Pages: 7
                Categories
                Subject: Original Paper

                ScienceOpen disciplines: Cardiovascular Medicine,Nephrology
                Keywords: End-stage renal disease,Insulin resistance,Arterial stiffness
                Data availability:
                ScienceOpen disciplines: Cardiovascular Medicine, Nephrology
                Keywords: End-stage renal disease, Insulin resistance, Arterial stiffness

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