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Manuel Teixeira, Marisol Gouveia, Ana Duarte, Miriam Ferreira, Maria I Simões, Maria Conceição, Gladys Silva, Sandra Magalhães, Rita Ferreira, Alexandra Nunes, Sandra I Vieira, Fernando Ribeiro, Regular Exercise Participation Contributes to Better Proteostasis, Inflammatory Profile, and Vasoactive Profile in Patients With Hypertension, American Journal of Hypertension, Volume 33, Issue 2, February 2020, Pages 119–123, https://doi.org/10.1093/ajh/hpz160
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Abstract
Physical exercise is a well-established strategy to control blood pressure. Nonetheless, its effects on protein homeostasis in individuals with hypertension are not clearly defined.
Evaluate proteostasis, quality of life, and inflammation, oxidative stress, and vasoactive biomarkers in adults with hypertension regarding reported exercise habits.
Twenty individuals were recruited in a health-care centre, 10 regular exercisers (age: 68.3 ± 4.2 years) and 10 age-matched individuals without regular exercise participation (age: 67.7 ± 5.1 years). Proteostasis and the levels of ubiquitin, heat shock protein 70 (Hsp70), endothelial nitric oxide synthase (eNOS), matrix metalloproteinases 2 (MMP-2), tissue inhibitor of MMP-2 (TIMP-2), connexin 43 (Cx43) and extracellular superoxide dismutase-3 (SOD-3) were assessed in plasma using immunoblotting techniques (western blot or slot blot) and Fourier-transform infrared spectroscopy (FTIR). Quality of life was assessed using the Short Form 36 (SF-36) version 2.0 questionnaire.
Significant higher levels of interleukin (IL)-6 (P = 0.014), eNOS (P = 0.011), Cx43 (P = 0.020), TIMP-2 (P = 0.038), and SOD-3 (P = 0.001), with a fold increase of 1.5, 1.2, 2.1, 1.3, and 1.2, respectively, were found in the exercise group. The overall quality of life (60.1 ± 4.3 vs. 53.2 ± 5.9, P = 0.009), as well as mental health domain (59.4 ± 7.9 vs. 50.7 ± 7.2, P = 0.024) were significantly higher in the exercise group. Multivariate analysis by FTIR showed that the age-matched group is characterized by peaks related with antiparallel β-sheet, whereas exercise group is characterized by peaks related to random coils, β-sheet, and α-helix.
Individuals with regular exercise participation showed better proteostasis, quality of life, inflammatory profile, antioxidant defenses, and eNOS levels.
