Abstract
An in vivo study was performed to see whether deterioration of the muscle cytoskeleton caused by eccentric exercise could be counteracted by raising the tissue content of nitric oxide. In Wistar rats that ran downhill on a treadmill inclined at 16° for 40 min at 20 m/min, the desmin content in m. soleus measured 24 h later declined by 15%, and the percentage of ruptures in the dystrophin layer was three times higher than in the control. Destruction of cytoskeletal proteins was also pronounced in rats pretreated with a blocker of NO synthase before exercise. By contrast, animals that received a nitric oxide donor (L-arginine) prior to running had control levels of desmin and dystrophin. It was concluded that nitric oxide can protect muscle cytoskeletal proteins in a single eccentric exercise.
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Original Russian Text © Yu.N. Lomonosova, A.V. Zheleznyakova, A.E. Bugrova, A.V. Zhiryakova, G.R. Kalamkarov, T.L. Nemirovskaya, 2009, published in Biofizika, 2009, Vol. 54, No. 3, pp. 515–521.
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Lomonosova, Y.N., Zheleznyakova, A.V., Bugrova, A.E. et al. Protective effect of nitric oxide on cytoskeletal proteins in rat soleus under eccentric exercise. BIOPHYSICS 54, 361–364 (2009). https://doi.org/10.1134/S0006350909030191
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DOI: https://doi.org/10.1134/S0006350909030191