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Effect of exercise and training on phospholemman phosphorylation in human skeletal muscleBenziane, Boubacar ...Phospholemman (PLM, FXYD1) is a partner protein and regulator of the Na(+)-K(+)-ATPase (Na(+)-K(+) pump). We explored the impact of acute and short-term training exercise on PLM physiology in human ... skeletal muscle. A group of moderately trained males (n = 8) performed a 1-h acute bout of exercise by utilizing a one-legged cycling protocol. Muscle biopsies were taken from vastus lateralis at 0 and 63 min (non-exercised leg) and 30 and 60 min (exercised leg). In a group of sedentary males (n = 9), we determined theeffect of a 10-day intense aerobic cycle training on Na(+)-K(+)-ATPase subunit expression, PLM phosphorylation, and total PLM expression as well as PLM phosphorylation in response to acute exercise (1 h at approximately 72% Vo(2peak)). Biopsies were taken at rest, immediately following, and 3 h after an acute exercise bout before and at the conclusion of the 10-day training study. PLM phosphorylation was increased both at Ser(63) and Ser(68) immediately after acute exercise (75%, P < 0.05, and 30%, P < 0.05, respectively). Short-term training had no adaptive effect on PLM phosphorylation at Ser(63) and Ser(68), nor was the total amount of PLM altered posttraining. The protein expressions of alpha(1)-, alpha(2)-,and beta(1)-subunits of Na(+)-K(+)-ATPase were increased after training (113%, P <0.05, 49%, P < 0.05, and 27%, P < 0.05, respectively). Whereas an acute bout of exercise increased the phosphorylation of PKCalpha/betaII on Thr(638/641) pre- and posttraining, phosphorylation of PKCzeta/lambda on Thr(403/410) was increased in response to acute exercise only after the 10-day training. In conclusion, we show that only acute exercise, and not short-term training, increases phosphorylation of PLM on Ser(63) and Ser(68), and data from one-legged cycling indicate that this effect of exercise on PLM phosphorylation is not due to systemic factors. (Abs. trunc. at 2000 ch.)Source: American journal of physiology. endocrinology and metabolism. - ISSN 0193-1849 (Vol. 301, issue 3, 2011, str. E456-E466)Type of material - article, component partPublish date - 2011Language - englishCOBISS.SI-ID - 28909529
Author
Benziane, Boubacar |
Widegren, U |
Pirkmajer, Sergej |
Henriksson, J |
Stepto, NK |
Chibalin, Alexander V.
Topics
Muscle, Skeletal |
Exercise |
Phosphorylation |
Na(+)-K(+)-Exchanging Atpase |
Biopsy |
Mišica skeletna |
Biopsija |
Na(+)-K(+)-izmenjevalna ATPaza |
Fosforilacija |
Telesna vadba
source: American journal of physiology. endocrinology and metabolism. - ISSN 0193-1849 (Vol. 301, issue 3, 2011, str. E456-E466)
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Benziane, Boubacar | |
Widegren, U | |
Pirkmajer, Sergej | 28351 |
Henriksson, J | |
Stepto, NK | |
Chibalin, Alexander V. |
Source: Personal bibliographies
and: SICRIS
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