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De Moraes WMAM, de Souza PRM, da Paixão NA, de Sousa LGO, Ribeiro DA, Marshall AG, Prestes J, Irigoyen MC, Brum PC, Medeiros A. Aerobic exercise training rescues protein quality control disruption on white skeletal muscle induced by chronic kidney disease in rats. J Cell Mol Med 2017; 22:1452-1463. [PMID: 29265674 PMCID: PMC5824409 DOI: 10.1111/jcmm.13374] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 08/08/2017] [Indexed: 02/06/2023] Open
Abstract
We tested whether aerobic exercise training (AET) would modulate the skeletal muscle protein quality control (PQC) in a model of chronic kidney disease (CKD) in rats. Adult Wistar rats were evaluated in four groups: control (CS) or trained (CE), and 5/6 nephrectomy sedentary (5/6NxS) or trained (5/6NxE). Exercised rats were submitted to treadmill exercise (60 min., five times/wk for 2 months). We evaluated motor performance (tolerance to exercise on the treadmill and rotarod), cross-sectional area (CSA), gene and protein levels related to the unfolded protein response (UPR), protein synthesis/survive and apoptosis signalling, accumulated misfolded proteins, chymotrypsin-like proteasome activity (UPS activity), redox balance and heat-shock protein (HSP) levels in the tibialis anterior. 5/6NxS presented a trend towards to atrophy, with a reduction in motor performance, down-regulation of protein synthesis and up-regulation of apoptosis signalling; increases in UPS activity, misfolded proteins, GRP78, derlin, HSP27 and HSP70 protein levels, ATF4 and GRP78 genes; and increase in oxidative damage compared to CS group. In 5/6NxE, we observed a restoration in exercise tolerance, accumulated misfolded proteins, UPS activity, protein synthesis/apoptosis signalling, derlin, HSPs protein levels as well as increase in ATF4, GRP78 genes and ATF6α protein levels accompanied by a decrease in oxidative damage and increased catalase and glutathione peroxidase activities. The results suggest a disruption of PQC in white muscle fibres of CKD rats previous to the atrophy. AET can rescue this disruption for the UPR, prevent accumulated misfolded proteins and reduce oxidative damage, HSPs protein levels and exercise tolerance.
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Affiliation(s)
- Wilson Max Almeida Monteiro De Moraes
- Biosciences Department, Federal University of Sao Paulo, Santos, Brazil.,Post-Graduation Program on Physical Education, Catholic University of Brasilia (UCB), Brasilia, Federal District, Brazil
| | | | | | | | | | - Andrea G Marshall
- Department of Neurobiology, Physiology and Behavior, University of California Davis, Davis, CA, USA
| | - Jonato Prestes
- Post-Graduation Program on Physical Education, Catholic University of Brasilia (UCB), Brasilia, Federal District, Brazil
| | - Maria Claudia Irigoyen
- Hypertension Unit, Heart Institute, University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - Patricia Chakur Brum
- Department of Post-graduation in Medicine, Nove de Julho University (UNINOVE), Sao Paulo, Brazil
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