scholarly journals Acute and chronic watercress supplementation attenuates exercise-induced peripheral mononuclear cell DNA damage and lipid peroxidation

2012 ◽  
Vol 109 (2) ◽  
pp. 293-301 ◽  
Author(s):  
Mark C. Fogarty ◽  
Ciara M. Hughes ◽  
George Burke ◽  
John C. Brown ◽  
Gareth W. Davison
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Dna Damage ◽  
Short And Long Term ◽  
Nutritional Compounds ◽  
Exercise Induced ◽  
Randomised Controlled ◽  
Male Subjects ◽  
Antioxidant Effects

Pharmacological antioxidant vitamins have previously been investigated for a prophylactic effect against exercise-induced oxidative stress. However, large doses are often required and may lead to a state of pro-oxidation and oxidative damage. Watercress contains an array of nutritional compounds such as β-carotene and α-tocopherol which may increase protection against exercise-induced oxidative stress. The present randomised controlled investigation was designed to test the hypothesis that acute (consumption 2 h before exercise) and chronic (8 weeks consumption) watercress supplementation can attenuate exercise-induced oxidative stress. A total of ten apparently healthy male subjects (age 23 (sd4) years, stature 179 (sd10) cm and body mass 74 (sd15) kg) were recruited to complete the 8-week chronic watercress intervention period (and then 8 weeks of control, with no ingestion) of the experiment before crossing over in order to compete the single-dose acute phase (with control, no ingestion). Blood samples were taken at baseline (pre-supplementation), at rest (pre-exercise) and following exercise. Each subject completed an incremental exercise test to volitional exhaustion following chronic and acute watercress supplementation or control. The main findings show an exercise-induced increase in DNA damage and lipid peroxidation over both acute and chronic control supplementation phases (P< 0·05v.supplementation), while acute and chronic watercress attenuated DNA damage and lipid peroxidation and decreased H2O2accumulation following exhaustive exercise (P< 0·05v.control). A marked increase in the main lipid-soluble antioxidants (α-tocopherol, γ-tocopherol and xanthophyll) was observed following watercress supplementation (P< 0·05v.control) in both experimental phases. These findings suggest that short- and long-term watercress ingestion has potential antioxidant effects against exercise-induced DNA damage and lipid peroxidation.

scholarly journals Physical Training Status Determines Oxidative Stress and Redox Changes in Response to an Acute Aerobic Exercise

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Farnaz Seifi-skishahr ◽  
Arsalan Damirchi ◽  
Manoochehr Farjaminezhad ◽  
Parvin Babaei
Keyword(s):  
Oxidative Stress ◽  
Exercise Training ◽  
Physical Training ◽  
Redox Balance ◽  
Moderate Intensity ◽  
Training Status ◽  
Reducing Environment ◽  
Exercise Induced ◽  
Male Subjects

Objective. To assess the influence of different physical training status on exercise-induced oxidative stress and changes in cellular redox state.Methods. Thirty male subjects participated in this study and were assigned as well-trained (WT), moderately trained (MT), and untrained (UT) groups. The levels of cortisol, creatine kinase, plasma reduced glutathione to oxidized glutathione (GSH/GSSG), cysteine/cystine (Cys/CySS), and GSH/GSSG ratio in red blood cells (RBCs) were measured immediately and 10 and 30 min after exercise.Results. Following the exercise, plasma GSH/GSSG (p=0.001) and Cys/CySS (p=0.005) were significantly reduced in all groups. Reduction in plasma GSH/GSSG ratio in all groups induced a transient shift in redox balance towards a more oxidizing environment without difference between groups (p=0.860), while RBCs GSH/GSSG showed significant reduction (p=0.003) and elevation (p=0.007) in UT and MT groups, respectively. The highest level of RBCs GSH/GSSG ratio was recorded in MT group, and the lowest one was recorded in the WT group.Conclusion. Long term regular exercise training with moderate intensity shifts redox balance towards more reducing environment, versus intensive exercise training leads to more oxidizing environment and consequently development of related diseases.

scholarly journals Nutritional Preconditioning in Cancer Treatment in Relation to DNA Damage and Aging

2020 ◽  
Vol 5 (1) ◽  
Author(s):  
Winnie M.C. van den Boogaard ◽  
Marry M. van den Heuvel-Eibrink ◽  
Jan H.J. Hoeijmakers ◽  
Wilbert P. Vermeij
Keyword(s):  
Dna Damage ◽  
Cancer Treatment ◽  
Cancer Biology ◽  
Accelerated Aging ◽  
Nutritional Intervention ◽  
Annual Review ◽  
Publication Date ◽  
Short And Long Term ◽  
Resilience Mechanisms

Dietary restriction (DR) is the most successful nutritional intervention for extending life span and preserving health in numerous species. Reducing food intake triggers a protective response that shifts energy resources from growth to maintenance and resilience mechanisms. This so-called survival response has been shown to particularly increase life and health span and decrease DNA damage in DNA repair–deficient mice exhibiting accelerated aging. Accumulation of DNA damage is the main cause of aging, but also of cancer. Moreover, radiotherapies and most chemotherapies are based on damaging DNA, consistent with their ability to induce toxicity and accelerate aging. Since fasting and DR decrease DNA damage and its effects, nutritional preconditioning holds promise for improving (cancer) therapy and preventing short- and long-term side effects of anticancer treatments. This review provides an overview of the link between aging and cancer, highlights important preclinical studies applying such nutritional preconditioning, and summarizes the first clinical trials implementing nutritional preconditioning in cancer treatment. Expected final online publication date for the Annual Review of Cancer Biology, Volume 5 is March 4, 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

scholarly journals The short and long term effects of exercise training in non-cystic fibrosis bronchiectasis – a randomised controlled trial

2014 ◽  
Vol 15 (1) ◽  
pp. 44 ◽  
Author(s):  
Annemarie L Lee ◽  
Catherine J Hill ◽  
Nola Cecins ◽  
Sue Jenkins ◽  
Christine F McDonald ◽  
...  
Keyword(s):  
Cystic Fibrosis ◽  
Randomised Controlled Trial ◽  
Exercise Training ◽  
Controlled Trial ◽  
Long Term Effects ◽  
Short And Long Term ◽  
Randomised Controlled

Short- and long-term alterations of mitochondrial morphology, dynamics and mtDNA after transient oxidative stress

Mitochondrion ◽  
2008 ◽  
Vol 8 (4) ◽  
pp. 293-304 ◽  
Author(s):  
Marina Jendrach ◽  
Sören Mai ◽  
Sandra Pohl ◽  
Monika Vöth ◽  
Jürgen Bereiter-Hahn
Keyword(s):  
Oxidative Stress ◽  
Mitochondrial Morphology ◽  
Short And Long Term

Antioxidant Responses and Lipid Peroxidation of Penaeus Indicus Postlarvae Subjected to Sublethal Copper Exposure

Crustaceana ◽  
2011 ◽  
Vol 84 (10) ◽  
pp. 1197-1210 ◽  
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Antioxidant Enzymes ◽  
Copper Toxicity ◽  
Sod Activity ◽  
Lipid Peroxidation Products ◽  
Coastal Marine ◽  
Potential Biomarker ◽  
Penaeus Indicus

AbstractThe objective of this study was to determine the effect of sublethal copper concentrations on certain antioxidant enzymes and lipid peroxidation products in the postlarvae (PL) of Penaeus indicus when subjected to short- and long-term exposure in the laboratory. The PL of P. indicus were exposed to 0.1641 ppm (sublethal) copper for a period of 30 days along with a parallel control. Sampling was carried out at six different time intervals, i.e., 24, 48, and 96 hrs (shortterm), and 10, 20, and 30 days (long-term). Variations in the activity of the antioxidant enzymes, namely, catalase (CAT) and superoxide dismutase (SOD), as well as lipid peroxidation products (LPP) were measured as biomarkers of metal toxicity. Our results showed a significant (P < 0.05) increase in LPP (indicating oxidative stress) and CAT activity (indicating an adaptive response of the PL for protection against oxidative stress) in the exposed PL for all periods of exposure. However, SOD activity significantly (P < 0.05) decreased on 20 and 30 days exposure, indicating susceptibility of the PL to oxidative stress upon long-term exposure. Therefore, CAT can serve as a better biomarker of oxidative stress than SOD to long-term copper toxicity. Our results indicate that copper contamination causes oxidative stress even at sublethal doses in Penaeus indicus PL, which can thus be used as a potential biomarker of copper toxicity for long-term monitoring of coastal marine ecosystems.

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