Vascular Nitric Oxide-Superoxide Balance and Thrombus Formation after Acute Exercise

Medicine and Science in Sports and Exercise
K PrzyborowskiS Chlopicki

Abstract

An acute bout of strenuous exercise in humans results in transient impairment of nitric oxide (NO)-dependent function, but it remains unknown whether this phenomenon is associated with increased risk of thrombotic events after exercise. This study aimed to evaluate effects of a single bout of exhaustive running in mice on the balance of vascular NO/reactive oxygen species production, and on thrombogenicity. At different time points (0, 2, and 4 h) after exercise and in sedentary C57BL/6 mice, the production of NO and superoxide (O2) in aorta was measured by electron paramagnetic resonance spin trapping and by dihydroethidium/high-performance liquid chromatography-based method, respectively, whereas collagen-induced thrombus formation was analyzed in a microchip-based flow-chamber system (total thrombus-formation analysis system). We also measured pre- and postexercise plasma concentration of nitrite/nitrate and 6-keto-PGF1α. An acute bout of exhaustive running in mice resulted in decreased production of NO and increased production of O2 in aorta, with maximum changes 2 h after completion of exercise when compared with sedentary mice. However, platelet thrombus formation was not changed by exercise as evidenced by unaltered time...Continue Reading

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Citations

Jun 30, 2019·Oxidative Medicine and Cellular Longevity·Bartosz ProniewskiStefan Chlopicki
Apr 4, 2021·Redox Biology·Mari Carmen Gomez-CabreraJose Viña

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