Short-Term Combined Exercise Improves Inflammatory Profile in the Retina of Obese Mice.
Thaís Dantis Pereira de CamposKellen Cristina da Cruz RodriguesRodrigo Martins PereiraAna Paula MorelliAlisson Luiz da RochaRaphael Dos Santos CanciglieriAdelino Sanchez Ramos da SilvaEduardo Rochete RopelleJosé Rodrigo PauliFernando Moreira SimabucoDennys Esper CintraLeandro Pereira de MouraPublished in: International journal of molecular sciences (2020)
Excess of adipose tissue increases the concentration of proinflammatory cytokines, triggering a subclinical inflammatory condition. This inflammatory profile contributes to retina damage, which can lead to retinal dysfunction and reduced vision. Regularly practicing both aerobic and strength exercises is well known for promoting anti-inflammatory effects on different organs in the peripheral and central regions. However, the effects of combined physical exercise (CPE; strength + aerobic) on the inflammatory process in the retina tissue are not yet known. This study aimed to investigate the effects of CPE on the inflammatory profile of the retina in obese mice. Swiss mice were distributed into control, sedentary obese, and trained obese groups. The trained obese group was subjected to short-term CPE, 1 h/day, for 7 days. The CPE was composed of aerobic and strength exercises in the same exercise session. The strength exercise protocol consisted of 10 climbing series, with 12 ± 1 dynamic climbing movements at 70% of the maximum voluntary carrying capacity (MVCC), and the aerobic exercise protocol consisted of 30 min of treadmill running, with an intensity of 75% of the exhaust velocity. Subsequently, the retina was excised and analyzed by Western blot. Obese animals presented impairment on glucose homeostasis and elevated levels of proinflammatory proteins in the serum and retina; however, CPE was effective in reversing these parameters, independently of changes in body adiposity. Therefore, for the first time, we have shown that short-term CPE can be an important strategy to treat an inflammatory profile in the retina.
Keyphrases
- high intensity
- adipose tissue
- diabetic retinopathy
- resistance training
- optic nerve
- oxidative stress
- metabolic syndrome
- weight loss
- physical activity
- insulin resistance
- anti inflammatory
- randomized controlled trial
- obese patients
- high fat diet
- bariatric surgery
- body composition
- body mass index
- skeletal muscle
- glycemic control
- chemotherapy induced