Inflammatory response to Streptococcus pneumoniae was attenuated by moderate aerobic exercise training

2020 ◽  
Author(s):  
Thamyres Castro ◽  
Roseane M. Laia ◽  
Luana D. Mendonça ◽  
Pietro Da Rocha Trindade ◽  
Jessica C. Souza ◽  
...  
Keyword(s):  
Streptococcus Pneumoniae ◽  
Exercise Training ◽  
Inflammatory Response ◽  
Aerobic Exercise ◽  
Aerobic Exercise Training

scholarly journals Epicardial fat gene expression after aerobic exercise training in pigs with coronary atherosclerosis: relationship to visceral and subcutaneous fat

2010 ◽  
Vol 109 (6) ◽  
pp. 1904-1912 ◽  
Author(s):  
Joseph M. Company ◽  
Frank W. Booth ◽  
M. Harold Laughlin ◽  
Arturo A. Arce-Esquivel ◽  
Harold S. Sacks ◽  
...  
Keyword(s):  
Gene Expression ◽  
Exercise Training ◽  
Inflammatory Response ◽  
Aerobic Exercise ◽  
Coronary Atherosclerosis ◽  
Expression Profiles ◽  
Subcutaneous Fat ◽  
Aerobic Exercise Training ◽  
Adipose Tissues ◽  
Castrate Male

Epicardial adipose tissue (EAT) is contiguous with coronary arteries and myocardium and potentially may play a role in coronary atherosclerosis (CAD). Exercise is known to improve cardiovascular disease risk factors. The purpose of this study was to investigate the effect of aerobic exercise training on the expression of 18 genes, measured by RT-PCR and selected for their role in chronic inflammation, oxidative stress, and adipocyte metabolism, in peri-coronary epicardial (cEAT), peri-myocardial epicardial (mEAT), visceral abdominal (VAT), and subcutaneous (SAT) adipose tissues from a castrate male pig model of familial hypercholesterolemia with CAD. We tested the hypothesis that aerobic exercise training for 16 wk would reduce the inflammatory profile of mRNAs in both components of EAT and VAT but would have little effect on SAT. Exercise increased mEAT and total heart weights. EAT and heart weights were directly correlated. Compared with sedentary pigs matched for body weight to exercised animals, aerobic exercise training reduced the inflammatory response in mEAT but not cEAT, had no effect on inflammatory genes but preferentially decreased expression of adiponectin and other adipocyte-specific genes in VAT, and had no effect in SAT except that IL-6 mRNA went down and VEGFa mRNA went up. We conclude that 1) EAT is not homogeneous in its inflammatory response to aerobic exercise training, 2) cEAT around CAD remains proinflammatory after chronic exercise, 3) cEAT and VAT share similar inflammatory expression profiles but different metabolic mRNA responses to exercise, and 4) gene expression in SAT cannot be extrapolated to VAT and heart adipose tissues in exercise intervention studies.

Aerobic exercise attenuates pulmonary inflammation induced by Streptococcus pneumoniae

2014 ◽  
Vol 117 (9) ◽  
pp. 998-1007 ◽  
Author(s):  
Clarice R. Olivo ◽  
Eliane N. Miyaji ◽  
Maria Leonor S. Oliveira ◽  
Francine M. Almeida ◽  
Juliana D. Lourenço ◽  
...  
Keyword(s):  
Streptococcus Pneumoniae ◽  
Exercise Training ◽  
Aerobic Exercise ◽  
Aerobic Training ◽  
Inflammatory Responses ◽  
Lung Parenchyma ◽  
Lavage Fluid ◽  
Infected Group ◽  
Aerobic Exercise Training ◽  
Polymorphonuclear Cells

Aerobic exercise has been recognized as a stimulator of the immune system, but its effect on bacterial infection has not been extensively evaluated. We studied whether moderate aerobic exercise training prior to Streptococcus pneumoniae infection influences pulmonary inflammatory responses. BALB/c mice were divided into four groups: Sedentary Untreated (sedentary without infection); Sedentary Infected (sedentary with infection); Trained Untreated (aerobic training without infection); and Trained Infected (aerobic training with infection). Animals underwent aerobic training for 4 wk, and 72 h after last exercise training, animals received a challenge with S. pneumoniae and were evaluated either 12 h or 10 days after instillation. In acute phase, Sedentary Infected group had an increase in respiratory system resistance and elastance; number of neutrophils, lymphocytes, and macrophages in bronchoalveolar lavage fluid (BAL); polymorphonuclear cells in lung parenchyma; and levels of keratinocyte-derived chemokine (KC), tumor necrosis factor-α (TNF-α), and interleukin (IL)−1β (IL-1β) in lung homogenates. Exercise training significantly attenuated the increase in all of these parameters and induced an increase in expression of antioxidant enzymes (CuZnSOD and MnSOD) in lungs. Trained Infected mice had a significant decrease in the number of colony-forming units of pneumococci in the lungs compared with Sedentary Infected animals. Ten days after infection, Trained Infected group exhibited lower numbers of macrophages in BAL, polymorphonuclear cells in lung parenchyma and IL-6 in lung homogenates compared with Sedentary Infected group. Our results suggest a protective effect of moderate exercise training against respiratory infection with S. pneumoniae. This effect is most likely secondary to an effect of exercise on oxidant-antioxidant balance.

Age-Related Attenuation of Aerobic Exercise Training Adaptation in 24-Week Old Rats

Diabetes ◽  
2018 ◽  
Vol 67 (Supplement 1) ◽  
pp. 1916-P
Author(s):  
REBECCA L. SCALZO ◽  
GRAHAME F. EVANS ◽  
SARA E. HULL ◽  
LESLIE KNAUB ◽  
LORI A. WALKER ◽  
...  
Keyword(s):  
Exercise Training ◽  
Aerobic Exercise ◽  
Aerobic Exercise Training ◽  
Training Adaptation ◽  
Age Related ◽  
Old Rats

scholarly journals A 16-week aerobic exercise and mindfulness-based intervention on chronic psychosocial stress: a pilot and feasibility study

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Guy A. Prochilo ◽  
Ricardo J.S. Costa ◽  
Craig Hassed ◽  
Richard Chambers ◽  
Pascal Molenberghs
Keyword(s):  
Emotion Regulation ◽  
Exercise Training ◽  
Aerobic Exercise ◽  
Psychosocial Stress ◽  
Retention Rate ◽  
Recruitment Rate ◽  
Trial Registration ◽  
Aerobic Exercise Training ◽  
Definitive Trial ◽  
Chronic Psychosocial Stress

Abstract Objectives Researchers have begun delivering mindfulness and aerobic exercise training concurrently on the premise that a combination intervention will yield salutary outcomes over and above each intervention alone. An estimate of the effect of combination training on chronic psychosocial stress in a nonclinical population has not been established. The objective of this study was to establish protocol feasibility in preparation of a definitive RCT targeting healthy individuals, and to explore the preliminary effect of combination training on reducing chronic psychosocial stress in this population. Methods Twenty-four participants were allocated to a single-arm pre-post study and subjected to 16 weeks of concurrent mindfulness psychoeducation and aerobic exercise training. Feasibility criteria were collected and evaluated. Within-group changes in chronic psychosocial stress, mindfulness, emotion regulation, and cardiorespiratory fitness were also assessed. Primary analyses were based on 17 participants. Results Retention rate, response rate, recruitment rate, and sample size analyses indicate a definitive trial is feasible for detecting most effects with precision. There was also a decline in our primary dependent measure of chronic psychosocial stress (dpretest = −0.56, 95% CI [ −1.14,−0.06]). With regard to secondary measures, there was an increase in the use of cognitive reappraisal, and a reduction in use of maladaptive emotion regulation strategies. We are insufficiently confident to comment on changes in mindfulness and aerobic capacity $\left (\dot {V}O_{2max}\right)$ V ̇ O 2 max . However, there were subgroup improvements in aerobic economy at submaximal exercise intensities. Conclusions We recommend a definitive trial is feasible and should proceed. Trial registration ANZCTR (ID: ACTRN12619001726145). Retrospectively registered December 9, 2019.

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