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      Metabolic, inflammatory and oxidative stress markers in the nitric oxide variation of hemodialysis subjects Translated title: Marcadores de estrés metabólico, inflamatorio y oxidativo en la variación del óxido nítrico de los individuos de hemodiálisis

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          Abstract

          Abstract Introduction: Oxidative stress markers such as nitric oxide (NO) have been investigated in hemodialysis (HD). Objective: Evaluate the association of NO variation with adiposity indicators, metabolic, inflammatory and oxidative stress markers in individuals to HD. Methods: Cross-sectional study with 85 subjects on HD treatment (≥ 18 years). The clinical-nutritional status was evaluated through subjective global assessment modified (SGAm), anthropometric measurements and body composition. Dietary intake was evaluated using a food frequency questionnaire. Metabolic markers were obtained from medical records. Inflammatory markers (IL-6 and IL-10) and oxidative stress, (TACs), (SOD), (GST), (MDA) and NO were determined using standardized protocols. Results: Those individuals with a high concentration of NO (> 4.32 μmol/L) had lower values for SGAm score (p = 0.012) and higher iron values (p = 0.050), Fe saturation (p = 0.037) and triacylglycerol (p = 0.003). The same subjects still had lower consumption of copper (p = 0.026), manganese (p = 0.035), vitamin E (p = 0.050), ω3 (p = 0.021) and ω6 (p = 0.020). In a multiple regression model, concentrations of ferritin, triacylglycerol, IL6 and SOD contributed to a 54.8% increase in NO concentrations, whereas triacylglycerol and SOD concentrations were independent factors for NO variation (p < 0.001). Conclusions: The clinical and nutritional status as well as intake of nutrients with antioxidant properties (Cu, Zn, Mn, vitamin C and ω3) appears to modulate the variation of NO in this population.

          Translated abstract

          Resumen Introducción: se han investigado marcadores de estrés oxidativo como el óxido nítrico (NO) en hemodiálisis (HD). Objetivo: evaluar la asociación de la variación del NO con los indicadores de adiposidad, los marcadores metabólicos, inflamatorios y de estrés oxidativo en individuos a HD. Métodos: estudio transversal con 85 sujetos en tratamiento HD (≥ 18 años). El estado clínico-nutricional se evaluó a través de la evaluación global subjetiva modificada (SGAm), medidas antropométricas y composición corporal. La ingesta dietética se evaluó mediante un cuestionario de frecuencia alimentaria. Marcadores metabólicos se obtuvieron de los registros médicos. Se determinaron marcadores inflamatorios (IL-6 e IL-10) y estrés oxidativo (TAC), (SOD), (GST), (MDA) y NO mediante protocolos estandarizados. Resultados: los individuos con una alta concentración de NO (> 4,32 μmol/L) tuvieron valores más bajos de puntuación de SGAm (p = 0,012) y mayores valores de hierro (p = 0,050), saturación de Fe (p = 0,037) y triacilglicerol (p = 0,003). Los mismos sujetos tuvieron un menor consumo de cobre (p = 0.026), manganeso (p = 0,035), vitamina E (p = 0,050), ω3 (p = 0,021) y ω6 (p = 0,020). En un modelo de regresión múltiple, las concentraciones de ferritina, triacilglicerol, IL6 y SOD contribuyeron a un aumento de 54,8% en las concentraciones de NO, mientras que las concentraciones de triacilglicerol y SOD fueron factores independientes para la variación del NO (p < 0,001). Conclusiones: el estado clínico y nutricional así como la ingesta de nutrientes con propiedades antioxidantes (Cu, Zn, Mn, vitamina C y ω3) parecen modular la variación del NO en esta población.

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          Screening for nutritional status in the elderly.

          A comprehensive assessment of nutritional status is a critically important component of any patient evaluation. Based upon clinical information, anthropometric data, and a small number of laboratory investigations, an accurate appraisal of nutritional status should be possible and an appropriate intervention plan can be developed. The actual approach depends on the particular problem discovered. These are discussed in detail elsewhere in this issue.
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            Vitamins E and C in the prevention of cardiovascular disease in men: the Physicians' Health Study II randomized controlled trial.

            Basic research and observational studies suggest vitamin E or vitamin C may reduce the risk of cardiovascular disease. However, few long-term trials have evaluated men at initially low risk of cardiovascular disease, and no previous trial in men has examined vitamin C alone in the prevention of cardiovascular disease. To evaluate whether long-term vitamin E or vitamin C supplementation decreases the risk of major cardiovascular events among men. The Physicians' Health Study II was a randomized, double-blind, placebo-controlled factorial trial of vitamin E and vitamin C that began in 1997 and continued until its scheduled completion on August 31, 2007. There were 14,641 US male physicians enrolled, who were initially aged 50 years or older, including 754 men (5.1%) with prevalent cardiovascular disease at randomization. Individual supplements of 400 IU of vitamin E every other day and 500 mg of vitamin C daily. A composite end point of major cardiovascular events (nonfatal myocardial infarction, nonfatal stroke, and cardiovascular disease death). During a mean follow-up of 8 years, there were 1245 confirmed major cardiovascular events. Compared with placebo, vitamin E had no effect on the incidence of major cardiovascular events (both active and placebo vitamin E groups, 10.9 events per 1000 person-years; hazard ratio [HR], 1.01 [95% confidence interval {CI}, 0.90-1.13]; P = .86), as well as total myocardial infarction (HR, 0.90 [95% CI, 0.75-1.07]; P = .22), total stroke (HR, 1.07 [95% CI, 0.89-1.29]; P = .45), and cardiovascular mortality (HR, 1.07 [95% CI, 0.90-1.28]; P = .43). There also was no significant effect of vitamin C on major cardiovascular events (active and placebo vitamin E groups, 10.8 and 10.9 events per 1000 person-years, respectively; HR, 0.99 [95% CI, 0.89-1.11]; P = .91), as well as total myocardial infarction (HR, 1.04 [95% CI, 0.87-1.24]; P = .65), total stroke (HR, 0.89 [95% CI, 0.74-1.07]; P = .21), and cardiovascular mortality (HR, 1.02 [95% CI, 0.85-1.21]; P = .86). Neither vitamin E (HR, 1.07 [95% CI, 0.97-1.18]; P = .15) nor vitamin C (HR, 1.07 [95% CI, 0.97-1.18]; P = .16) had a significant effect on total mortality but vitamin E was associated with an increased risk of hemorrhagic stroke (HR, 1.74 [95% CI, 1.04-2.91]; P = .04). In this large, long-term trial of male physicians, neither vitamin E nor vitamin C supplementation reduced the risk of major cardiovascular events. These data provide no support for the use of these supplements for the prevention of cardiovascular disease in middle-aged and older men. clinicaltrials.gov Identifier: NCT00270647.
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              Clinical practice guidelines for hemodialysis adequacy, update 2006.

              (2006)
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                Author and article information

                Journal
                nh
                Nutrición Hospitalaria
                Nutr. Hosp.
                Grupo Arán (Madrid, Madrid, Spain )
                0212-1611
                1699-5198
                February 2018
                : 35
                : 1
                : 176-184
                Affiliations
                [1] Viçosa Minas Gerais orgnameUniversidade Federal de Viçosa orgdiv1Department of Nutrition and Health Brazil
                [2] Viçosa Minas Gerais orgnameUniversidade Federal de Viçosa orgdiv1Department of General Biology Brazil
                Article
                S0212-16112018000100176 S0212-1611(18)03500100176
                10.20960/nh.1319
                a3620c0d-95b2-4562-afb3-60435c60c116

                This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

                History
                : 01 June 2017
                : 28 August 2017
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 53, Pages: 9
                Product

                SciELO Spain

                Categories
                Original Papers

                Enfermedad renal terminal.,Inflamación,Reactive nitrogen species,End-stage renal disease,Especies nitrogenadas reactivas,Food intake,Superoxide dismutase,Superóxido dismutasa,Inflammation,Ingesta de alimentos

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