The association of oxidant–antioxidant status in patients with chronic renal failure

Aziz, Manal Azat; Majeed, Ghanim H; Diab, Kareem S.; Al-Tamimi, Raid J

doi:10.3109/0886022x.2015.1103654

Cited by 28 publications

(36 citation statements)

References 33 publications

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“…Reduced concentration of trace elements, such as Se, Cu and Zn lowers the activity of antioxidant enzymes (SOD, Gpx). Lowered concentration of trace elements was reduced is probably a result of insufficient intake, but also increased loss during high-flux haemodialysis/hemodiafiltration [10]. Also, because of the lack of vitamin C and vitamin E, the capacity of non-enzymatic antioxidative protection systems has been reduced [10].…”

Section: Introductionmentioning

confidence: 99%

The influence of vitamin E-coated dialysis membrane on oxidative stress during a single session of on-line hemodiafiltration

et al. 2021

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Background / Aim. Oxidative stress is an important risk factor for the development of cardiovascular atherosclerotic diseases in the population of patients treated with regular hemodialysis. Bioincompatibility of the dialysis membrane and increased concentration of endotoxin in the hemodialysis solution are two main factors that can stimulate oxidative stress. The paper was intended to examine the effect of a vitamin E-coated membrane on oxidative stress during a single session of on-line hemodiafiltration. Methods. Twenty-four patients undergoing hemodiafiltration with vitamin-E coated polysulfone dialysis membrane (Leoceed 21H) were examined, followed by a polysulfone dialysis membrane treatment without vitamin E (FX800). Following parameters of oxidative stress were measured: superoxide anion radical (O2 -), hydrogen peroxide (H2O2), thiobarbutyric acid reactive substances (TBARS), nitric oxide (NO2 -), catalase (CAT), superoxide dizmutase (SOD), and reduced glutathione activity (GSH). Statistical analysis included Kolmogorov-Smirnov test, Student-T test and Wilcoxon test. Results. On-line hemodiafiltration with

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Section: Introductionmentioning

confidence: 99%

The influence of vitamin E-coated dialysis membrane on oxidative stress during a single session of on-line hemodiafiltration

et al. 2021

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“…Nevertheless, during environmental stress and cell dysfunction, levels of ROS can increase dramatically and cause significant cellular damage in the body. Consequently, oxidative stress significantly contributes to the pathogenesis of different diseases, such as heart disease, inflammatory disease, cancer, diabetes mellitus, Alzheimer's disease, autism, and to the aging process (Figure 1) [3][4][5]. The chapter clarifies oxidative stress.…”

Section: Introductionmentioning

confidence: 99%

“…Oxidative stress refers to the imbalance between oxidants and antioxidants within the body due to antioxidant deficiency or increased reactive oxygen species (ROS), reactive nitrogen species (RNA), and reactive sulfur species (RSS) production, which lead to potential cellular damage [1,2]. ROS is a collective term that encompasses all highly reactive forms of oxygen, including free radicals.…”

Section: Introductionmentioning

confidence: 99%

Antioxidant Categories and Mode of Action

Aziz¹,

Diab²,

Mohammed³

2019

Antioxidants

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Oxidative stress has received a considerable scientific attention as a mediator in the etiology of many human diseases. Oxidative stress is the result of an imbalance between free radicals and antioxidants. Cells can be damaged by free radicals that are considered to play a main role in the aging process and diseases development. Antioxidants are the first line of defense against the detrimental effects of free radical damage, and it is essential to maintain optimal health via different mechanisms of action. Types of antioxidants range from those generated endogenously by the body cells, to exogenous agents such as dietary supplements. Antioxidant insufficiency can be developed as a result of decreased antioxidant intake, synthesis of endogenous enzymes, or increased antioxidant utilization. To maintain optimal body function, antioxidant supplementation has become an increasingly popular practice through improving free radical protection. In this chapter, we first elucidate the oxidative stress, and then define the antioxidant and its categories. Finally, introduce the antioxidants mode of actions for cell protection from free radicals.

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“…[123] Antioxidants in fruits and vegetables may help to protect people from chronic disorders such as ischemic heart disease. [456] β-carotene, tocopherol, and vitamin C by inhibiting low-density lipoprotein oxidation can prevent atherosclerosis.…”

Section: Introductionmentioning

confidence: 99%

Development, validity, and reliability of a food frequency questionnaire for antioxidants in elderly Iranian people

et al. 2016

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Background:The food frequency questionnaire (FFQ), as a way to assess the dietary intake in comparison with other methods, is easier to analyze and takes less time and is less costly. Our aim in this study was to develop and validate an FFQ for estimating the intakes of selected antioxidants in elderly Iranian people.Materials and Methods:A total of 185 elderly people were randomly selected. Three-day food records were completed by the subjects and collected every 2 months and dietary intake levels of zinc, selenium, carotenes and vitamins C and E were estimated. Based on the food records data, geographic location, and age, an FFQ was designed to estimate antioxidant intakes during 1 year. In addition, for controlling energy intake, 2-day food records were also collected with the food frequency questionnaire. To assess the reliability, 40 individuals were asked to complete the FFQ twice with an interval of 3 months in between.Results:Intraclass correlation coefficient (ICC) between the two FFQs for antioxidant C, antioxidant E, carotene, selenium, and zinc were 0.62, 0.47, 0.51, 0.54, and 0.58, respectively (P < 0.05). In addition, Pearson correlation coefficients between the FFQ and the food records, after controlling energy for vitamin C, vitamin E, carotene, selenium, and zinc, were 0.46, 0.48, 0.38, 0.55, and 0.47 respectively (P < 0.001).Conclusion:According to the results of this study, considering the fact that the FFQ was designed for the elderly and the special conditions (patience, memory, etc.) and vulnerability of this age group, the questionnaire is relatively valid and reliable to use.

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The association of oxidant–antioxidant status in patients with chronic renal failure

Cited by 28 publications

References 33 publications

The influence of vitamin E-coated dialysis membrane on oxidative stress during a single session of on-line hemodiafiltration

The influence of vitamin E-coated dialysis membrane on oxidative stress during a single session of on-line hemodiafiltration

Antioxidant Categories and Mode of Action

Development, validity, and reliability of a food frequency questionnaire for antioxidants in elderly Iranian people

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