Weight loss is associated with improved endothelial dysfunction via NOX2-generated oxidative stress down-regulation in patients with the metabolic syndrome

2011 ◽  
Vol 7 (3) ◽  
pp. 219-227 ◽  
Author(s):  
Francesco Angelico ◽  
Lorenzo Loffredo ◽  
Pasquale Pignatelli ◽  
Teresa Augelletti ◽  
Roberto Carnevale ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Metabolic Syndrome ◽  
Weight Loss ◽  
Endothelial Dysfunction ◽  
Down Regulation ◽  
The Metabolic Syndrome

scholarly journals The Impact of Rapid Weight Loss on Oxidative Stress Markers and the Expression of the Metabolic Syndrome in Obese Individuals

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Eva Tumova ◽  
Wensheng Sun ◽  
Peter H. Jones ◽  
Michal Vrablik ◽  
Christie M. Ballantyne ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Metabolic Syndrome ◽  
Weight Loss ◽  
Oxidative Stress Marker ◽  
Rapid Weight Loss ◽  
Oxidative Stress Markers ◽  
Stress Markers ◽  
The Metabolic Syndrome ◽  
Obese Subjects ◽  
The Impact

Objective. Obesity is linked with a state of increased oxidative stress, which plays an important role in the etiology of atherosclerosis and type 2 diabetes mellitus. The aim of our study was to evaluate the effect of rapid weight loss on oxidative stress markers in obese individuals with metabolic syndrome (MetS).Design and Methods. We measured oxidative stress markers in 40 obese subjects with metabolic syndrome (MetS+), 40 obese subjects without metabolic syndrome (MetS−), and 20 lean controls (LC) at baseline and after three months of very low caloric diet.Results. Oxidized low density lipoprotein (ox-LDL) levels decreased by 12% in MetS+ subjects, associated with a reduction in total cholesterol (TC), even after adjustment for age and sex. Lipoprotein associated phospholipase A2(Lp-PLA2) activity decreased by 4.7% in MetS+ subjects, associated with a drop in LDL-cholesterol (LDL-C), TC, and insulin levels. Multivariate logistic regression analysis showed that a model including ox-LDL, LpPLA2activity, and myeloperoxidase (MPO) improved prediction of MetS status among obese individuals compared to each oxidative stress marker alone.Conclusions. Oxidative stress markers were predictive of MetS in obese subjects, suggesting a higher oxidative stress. Rapid weight loss resulted in a decline in oxidative stress markers, especially in MetS+ patients.

686: Endothelial Dysfunction and Oxidative Stress Associated with the Metabolic Syndrome can be Reversed by a Chronic Treatment with Sildenafil

2007 ◽  
Vol 177 (4S) ◽  
pp. 230-230
Author(s):  
Delphine Behr-Roussel ◽  
Alexandra Oudot ◽  
Stéphanie Caisey ◽  
Olivier Le Coz ◽  
Chris Wayman ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Metabolic Syndrome ◽  
Endothelial Dysfunction ◽  
Chronic Treatment ◽  
The Metabolic Syndrome ◽  
And Oxidative Stress

scholarly journals Exercise and diet induced weight loss improves measures of oxidative stress and insulin sensitivity in adults with characteristics of the metabolic syndrome

2007 ◽  
Vol 293 (2) ◽  
pp. E500-E506 ◽  
Author(s):  
R. Scott Rector ◽  
Shana O. Warner ◽  
Ying Liu ◽  
Pamela S. Hinton ◽  
Grace Y. Sun ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Insulin Resistance ◽  
Metabolic Syndrome ◽  
Weight Loss ◽  
Insulin Sensitivity ◽  
Aerobic Exercise ◽  
Apolipoprotein A1 ◽  
Lipid Hydroperoxides ◽  
Antioxidative Status ◽  
The Metabolic Syndrome

Obesity and insulin resistance (IR) increase the risk for coronary heart disease; however, much of this risk is not attributable to traditional risk factors. We sought to determine whether weight loss associated with supervised aerobic exercise beneficially alters biomarkers of oxidative stress and whether these alterations are associated with improvements in measures of insulin resistance. Twenty-five sedentary and overweight to obese [body mass index (BMI) = 33.0 ± 0.8 kg/m2] individuals, with characteristics of the metabolic syndrome, participated in a 4- to 7-mo weight loss program that consisted of energy restriction (reduced by ∼500 kcal/day) and supervised aerobic exercise (5 days/wk, 45 min/day at 60% V̇o2 max; ∼375 kcal/day). IR and insulin sensitivity were assessed by the calculation of the homeostasis model assessment (HOMA) and quantitative insulin sensitivity check index (QUICKI), respectively. Oxidative stress was assessed by oxidized LDL (oxLDL), myeloperoxidase (MPO), and low- and high- density lipoprotein (LDL and HDL) lipid hydroperoxide concentrations in serum. Indexes for antioxidative status included apolipoprotein A1 (apoA1) concentrations and paraoxonase-1 (PON1) activity and protein concentrations. Exercise- and diet-induced weight loss (∼10%) significantly ( P < 0.05) increased insulin sensitivity and reduced IR, oxLDL, and LDL lipid hydroperoxides but did not alter HDL lipid hydroperoxides or MPO concentrations. Lifestyle modification impacted systemic antioxidative status by increasing apoA1 concentrations and reducing serum PON1 protein and activity. Changes in oxidative stress were not associated with alterations in HOMA or QUICKI. Diet- and exercise-induced weight loss (∼10%) improves measures of insulin sensitivity and beneficially alters biomarkers of oxidative status.

scholarly journals Parameters of endothelial function and insulin resistance in patients with metabolic syndrome before and after weight loss

2008 ◽  
Vol 5 (1) ◽  
pp. 18-22 ◽  
Author(s):  
A M Mkrtumyan ◽  
E V Biryukova ◽  
N V Markina ◽  
M A Garbuzova
Keyword(s):  
Insulin Resistance ◽  
Metabolic Syndrome ◽  
Coronary Heart Disease ◽  
Weight Loss ◽  
Heart Disease ◽  
Endothelial Dysfunction ◽  
Endothelial Function ◽  
Main Role ◽  
Pathophysiological Mechanism ◽  
The Metabolic Syndrome

In clinical practice, physicians of different specialties often faced with the metabolic syndrome (MS) is a set of hormonal and metabolic disorders that share a common pathophysiological mechanism - insulin resistance (IR) [1, 5, 11]. MS is important for the clinician not only how widespread pathology, but primarily as a life-threatening condition. Of course, this syndrome plays an important role in accelerating the development and progression of diseases associated with atherosclerosis, which, according to experts WHO, ranks first among the causes of mortality in industrialized countries [12, 16, 19]. This situation is particularly important for Russia due to the relatively high spread of the syndrome, component, according to several authors, about 20% of the population, and high rates of death from coronary heart disease and stroke in the Russian population [2, 4, 5]. It is known that the risk of coronary heart disease (CHD), stroke, and total coronary mortality increases with the number of components of metabolic syndrome [14, 15, 20]. The study J.H. Park et al., Which included 478 patients with ischemic stroke, MS was diagnosed in 53.4% of patients (criteria NCEP ATP III), the thickness of the complex value of the index "intima-media" of the carotid arteries was increased in direct proportion to an increase in the number of available components of MS [20] . Link between R D and cardiovascular disease, apparently, is endothelial dysfunction, which is the study at various metabolic diseases received much attention [9, 10, 22]. Endothelial dysfunction, which is typical for many patients with MS, is a marker of metabolic and vascular disorders [15, 22]. In the initial period of development of the atherosclerotic process, even when there are no obvious clinical manifestations and visible morphological changes of blood vessels, the main role is played by endothelial dysfunction [9, 21]. Endothelial dysfunction is also discussed as one of the reasons for the rapid development, progression of atherosclerosis and its complications in patients with MS [11,18]. For example, recent studies have shown that tears plaques leading to myocardial infarction, do not always occur in the zone of maximum stenosis of the coronary arteries [13]. Rather, they tend to occur in places restrictions of small - less than 50% by angiography. The study of endothelial function in patients with MS is at the initial stages of the study [8, 15, 18]. In addition, of particular interest is the study of the effect of weight loss on the state of the endothelium in the syndrome of insulin resistance.

scholarly journals Effects of a Physical Activity Program on Markers of Endothelial Dysfunction, Oxidative Stress, and Metabolic Status in Adolescents with Metabolic Syndrome

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Eneida Camarillo-Romero ◽  
Ma Victoria Dominguez-Garcia ◽  
Araceli Amaya-Chavez ◽  
Maria del Socorro Camarillo-Romero ◽  
Juan Talavera-Piña ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Physical Activity ◽  
Metabolic Syndrome ◽  
Endothelial Dysfunction ◽  
Stress Tests ◽  
The Metabolic Syndrome ◽  
Baseline Values ◽  
Almost All ◽  
Program Components ◽  
And Oxidative Stress

The metabolic syndrome (MetS) is a precursor of diabetes. Physical activity (PA) improves endothelial dysfunction and may benefit patients with MetS. Aims. To evaluate the effect of a physical activity (PA) program on markers of endothelial dysfunction and oxidative stress in adolescents with (MetS). Methods. We carried out a cohort study of 38 adolescents with and without MetS (18 females and 20 males). All participants completed a 3-month PA program. All variables of the MetS as well as markers of endothelial dysfunction and oxidative stress tests were evaluated. Results. Females with and without MetS showed significant differences for almost all components of the MetS, whereas males were significantly different in half of the components. After the PA program, components of the MetS were not different from baseline values except for HDL-C levels. Some baseline endothelial dysfunction markers were significantly different among adolescents with and without MetS; however, after the PA program, most of these markers significantly improved in subjects with and without MetS. Conclusion. PA improves the markers of endothelial dysfunction in adolescents with MetS although other changes in the components of the MetS were not observed. Perhaps the benefits of PA on all components of MetS would appear after a PA program with a longer duration.

scholarly journals Telomere Length and Oxidative Stress and Its Relation with Metabolic Syndrome Components in the Aging

Biology ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 253
Author(s):  
Graciela Gavia-García ◽  
Juana Rosado-Pérez ◽  
Taide Laurita Arista-Ugalde ◽  
Itzen Aguiñiga-Sánchez ◽  
Edelmiro Santiago-Osorio ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Metabolic Syndrome ◽  
Telomere Length ◽  
Scientific Evidence ◽  
Telomeric Dna ◽  
Biochemical Alterations ◽  
The Metabolic Syndrome ◽  
Age Related ◽  
And Function

A great amount of scientific evidence supports that Oxidative Stress (OxS) can contribute to telomeric attrition and also plays an important role in the development of certain age-related diseases, among them the metabolic syndrome (MetS), which is characterised by clinical and biochemical alterations such as obesity, dyslipidaemia, arterial hypertension, hyperglycaemia, and insulin resistance, all of which are considered as risk factors for type 2 diabetes mellitus (T2DM) and cardiovascular diseases, which are associated in turn with an increase of OxS. In this sense, we review scientific evidence that supports the association between OxS with telomere length (TL) dynamics and the relationship with MetS components in aging. It was analysed whether each MetS component affects the telomere length separately or if they all affect it together. Likewise, this review provides a summary of the structure and function of telomeres and telomerase, the mechanisms of telomeric DNA repair, how telomere length may influence the fate of cells or be linked to inflammation and the development of age-related diseases, and finally, how the lifestyles can affect telomere length.

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