Effects of Croton lechleri sap (Sangre de Drago) on AGEs formation, LDL oxidation and oxidative stress related to vascular diseases

Sofrito is a mix of tomato, onion, garlic, and olive oil, which contains phenolic compounds and carotenoids. Consumption of tomato-based sofrito has been related to a lower risk of cardiovascular events, but the mechanisms behind such beneficial effects remain unclear. This study aimed to analyze the effects of representative sofrito compounds such as naringenin, hydroxytyrosol, lycopene, and β-carotene on mechanisms involved in the pathogenesis of atherosclerosis. We demonstrated that both phenolic compounds and both carotenoids studied were able to inhibit low density lipoproteins (LDL) oxidation, as well as oxidative stress and eicosanoid production induced by oxidized LDL (oxLDL) in macrophage cultures. These effects were not the consequences of disturbing oxLDL uptake by macrophages. Finally, we observed an additive effect of these sofrito compounds, as well as the activity of a main naringenin metabolite, naringenin 7-O-β-d-glucuronide on LDL oxidation and oxidative stress.

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Short-Term Bixin Supplementation of Healthy Subjects Decreases the Susceptibility of LDL to Cu2+-Induced Oxidation Ex Vivo

Journal of Nutrition and Metabolism ◽

10.1155/2019/9407069 ◽

2019 ◽

Vol 2019 ◽

pp. 1-13 ◽

Cited By ~ 3

Author(s):

Lisiane Conte ◽

Sabrina Somacal ◽

Sabrina Marafiga Nichelle ◽

Cristine Rampelotto ◽

Silvino Sasso Robalo ◽

...

Keyword(s):

Oxidative Stress ◽

Nitric Oxide ◽

Biochemical Parameters ◽

Ex Vivo ◽

Ldl Oxidation ◽

Short Term ◽

Oxidative Stress Biomarkers ◽

Stress Biomarkers ◽

And Oxidative Stress

Lycopene-based medications and supplements have been developed to prevent atherosclerosis, primarily because of their ability to decrease low-density lipoprotein (LDL) oxidation. Bixin and norbixin are carotenoids found in the seeds of annatto (Bixa orellana) and are colorants widely used by the food industry. Some studies have already demonstrated that these compounds have antioxidant and antiatherogenic potential in vitro and in animal models, but there is no evidence supporting the effects of their long-term or short-term consumption by humans. The aim of this study was to evaluate the effects of short-term intake of annatto carotenoids on biochemical and oxidative stress biomarkers as well as on the susceptibility of LDL oxidation in healthy individuals, using lycopene as a positive control. The effect of daily supplementation (0.05 mg/kg of body weight (b.w.)) with bixin, norbixin, lycopene, or placebo for 7 days was evaluated in a randomized, controlled crossover study in 16 healthy volunteers (8 men and 8 women). The susceptibility of LDL to Cu2+-induced oxidation ex vivo, biochemical parameters, and oxidative stress biomarkers were evaluated. No treatment affected biochemical parameters or most oxidative stress biomarkers. However, bixin reduced the oxidation rate of the LDL lipid moiety (−275%, p<0.1) and nitric oxide metabolites (NOx) (−460%, p<0.1), compared to the placebo group. Moreover, we observed that the changes in these parameters were positively associated, supporting the hypothesis that bixin decreases the susceptibility of LDL to Cu2+-induced oxidation by decreasing NOx levels, probably by downregulating the inducible nitric oxide synthase.

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Changes in LDL Oxidative Status and Oxidative and Inflammatory Gene Expression after Red Wine Intake in Healthy People: A Randomized Trial

Mediators of Inflammation ◽

10.1155/2015/317348 ◽

2015 ◽

Vol 2015 ◽

pp. 1-13 ◽

Cited By ~ 35

Author(s):

Laura Di Renzo ◽

Luigi Tonino Marsella ◽

Alberto Carraro ◽

Roberto Valente ◽

Paola Gualtieri ◽

...

Keyword(s):

Oxidative Stress ◽

Gene Expression ◽

Red Wine ◽

Protective Action ◽

Nutritional Intervention ◽

Ldl Oxidation ◽

Inflammatory Gene Expression ◽

Stress Related Genes ◽

And Oxidative Stress ◽

Increased Susceptibility

Postprandial oxidative stress is characterized by an increased susceptibility of the organism towards oxidative damage after consumption of a meal rich in lipids and/or carbohydrates. Micronutrients modulate immune system and exert a protective action by reducing low density lipoproteins (LDL) oxidation via induction of antioxidant enzymes. We evaluated the gene expression of oxidative stress (HOSp), inflammasome (HIp), and human drug metabolism pathways (HDM) and ox-LDL level at baseline and after the intake of red wine naturally enriched with resveratrol (NPVRW), in association with or without a McDonald’s meal (McDM). The ox-LDL levels significantly increase comparing baseline (B)versusMcDM and decreased comparing McDMversusMcDM + NPVRW (P≤0.05). Percentages of significant genes expressed after each nutritional intervention were the following: (1) BversusMcDM, 2.88% HOSp, 2.40% of HIp, and 3.37% of HDMp; (2) BversusMcDM + NPVRW, 1.44% of HOSp, 4.81% of HIp, and 0.96% of HDMp; (3) McDMversusMcDM + NPVRW, 2.40% of HOSp, 2.40% of HIp, and 5.77% of HDMp; (4) BversusNPVRW, 4.80% HOSp, 3.85% HIp, and 3.85% HDMp. NPVRW intake reduced postprandial ox-LDL and the expression of inflammation and oxidative stress related genes. Chronic studies on larger population are necessary before definitive conclusions.

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1638: Erectile Dysfunction and Oxidative Stress-Media Ted Cavernosal Cell Death in Spontaneously Hypertensive Rats

The Journal of Urology ◽

10.1016/s0022-5347(18)38846-3 ◽

2004 ◽

Vol 171 (4S) ◽

pp. 433-433

Author(s):

Steven Kuntz ◽

Steven White ◽

Michael Alba ◽

Mahadevan Rajasekaran

Keyword(s):

Oxidative Stress ◽

Cell Death ◽

Erectile Dysfunction ◽

Spontaneously Hypertensive Rats ◽

Hypertensive Rats ◽

Spontaneously Hypertensive ◽

And Oxidative Stress

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Association between calcitriol and paricalcitol with oxidative stress in patients with hemodialysis

International Journal for Vitamin and Nutrition Research ◽

10.1024/0300-9831/a000641 ◽

2020 ◽

pp. 1-8

Author(s):

Hasan Haci Yeter ◽

Berfu Korucu ◽

Elif Burcu Bali ◽

Ulver Derici

Keyword(s):

Oxidative Stress ◽

Vitamin D ◽

Antioxidant Status ◽

Total Antioxidant Status ◽

Stress Index ◽

Total Oxidant Status ◽

Vitamin D Analog ◽

Total Antioxidant ◽

Oxidant Status ◽

And Oxidative Stress

Abstract. Background: The pathophysiological basis of chronic kidney disease and its complications, including cardiovascular disease, are associated with chronic inflammation and oxidative stress. We investigated the effects of active vitamin D (calcitriol) and synthetic vitamin D analog (paricalcitol) on oxidative stress in hemodialysis patients. Methods: This cross-sectional study was composed of 83 patients with a minimum hemodialysis vintage of one year. Patients with a history of any infection, malignancy, and chronic inflammatory disease were excluded. Oxidative markers (total oxidant and antioxidant status) and inflammation markers (C-reactive protein and interleukin-6) were analyzed. Results: A total of 47% (39/83) patients were using active or analog vitamin D. Total antioxidant status was significantly higher in patients with using active or analog vitamin D than those who did not use (p = 0.006). Whereas, total oxidant status and oxidative stress index were significantly higher in patients with not using vitamin D when compared with the patients who were using vitamin D preparation (p = 0.005 and p = 0.004, respectively). On the other hand, total antioxidant status, total oxidant status, and oxidative stress index were similar between patients who used active vitamin D or vitamin D analog (p = 0.6; p = 0.4 and p = 0.7, respectively). Conclusion: The use of active or selective vitamin D analog in these patients decreases total oxidant status and increases total antioxidant status. Also, paricalcitol is as effective as calcitriol in decreasing total oxidant status and increasing total antioxidant status in patients with chronic kidney disease.

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