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The effects of long-term moderate exercise and Western-type diet on oxidative/nitrosative stress, serum lipids and cytokines in female Sprague Dawley rats [Elektronski vir]Semeraro, Maria Donatella ...Purpose: Regular exercise reduces obesity and the risk of cardiovascular disease. However, health-promoting benefits of physical activity are commonly associated with increased inflammation and ... oxidative stress. Here, we tested whether constant moderate exercise is able to prevent or attenuate the oxidative/nitrosative stress, inflammation, and serum lipids in lean and obese rats. Methods: Four-month-old female Sprague Dawley rats received standard or a high-fat diet. Animals were subjected to a physical activity protocol, consisting of 30 min forced treadmill exercise for 5 consecutive days per week during 10 months. Baseline and sedentary (non-exercised) rats were used as controls. Lipids, oxidized low-density lipoprotein cholesterol, nitric oxide metabolites, and pro- and anti-inflammatory markers were measured in blood collected upon euthanasia. Results: At variance to young baseline control rats, 14-month-old animals fed normal diet had increased plasma lipid levels, including total cholesterol and triglycerides, which were further elevated in rats that consumed a high-fat diet. While treadmill exercise did not lower the amount of serum lipids in standard diet group, forced physical activity reduced non-high-density lipoprotein cholesterol in response to high-fat diet feeding. Exercised rats fed standard diet or high-fat diet had lower abundancy of nitric oxide metabolites, which coincided with increased levels of oxidized low-density lipoprotein cholesterol. Accordingly, the amount of nitric oxide metabolites correlated inversely with oxidized low-density lipoprotein cholesterol and homo-arginine. Exercise significantly reduced inflammatory cytokines in high-fat diet fed rats only. Conclusion: Our study suggests that regular exercise alters the equilibrium between oxidative and anti-oxidative compounds and reduces pro-inflammatory cytokines.Source: European journal of nutrition [Elektronski vir]. - ISSN 1436-6215 (61, 1, July 2021, str. 255-268)Type of material - e-articlePublish date - 2021Language - englishCOBISS.SI-ID - 130737155
Author
Semeraro, Maria Donatella |
Almer, Gunter |
Kaiser, Melanie |
Zelzer, Sieglinde |
Meinitzer, Andreas |
Scharnagl, Hubert |
Sedej, Simon, 1974- |
Gruber, Hans-Jürgen |
Herrmann, Markus
Topics
long-term moderate exercise |
nitric oxide |
nitric oxide synthase |
oxidized LDL |
Sprague Dawley rats |
western-type diet
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Semeraro, Maria Donatella | ![]() |
Almer, Gunter | ![]() |
Kaiser, Melanie | ![]() |
Zelzer, Sieglinde | ![]() |
Meinitzer, Andreas | ![]() |
Scharnagl, Hubert | ![]() |
Sedej, Simon, 1974- | 20340 |
Gruber, Hans-Jürgen | ![]() |
Herrmann, Markus | ![]() |
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