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Pro- and Anti-inflammatory Biomarkers Responses after Aerobic Training in Heart Transplant Recipients: A Systematic
Leandro Tolfo Franzoni1,2, Stephanie Bastos da Motta1,2, Gabriel Carvalho1,2
1Programa de Pós-graduação em Ciências da Saúde: Cardiologia e Ciências Cardiovasculares da Universidade Federal do Rio Grande do Sul - Porto Alegre, Brazil.
Background:
Physical exercise (PE) may improve plasma concentration of interleukin- 6 (IL-6), tumor necrosis factor-alpha (TNF-alpha), and adiponectin (adpN) in heart transplant (HT) patients. However, no consistent data is available on this population.
Aim:
Thus, we aimed to conduct a systematic review and meta-analysis on the effects of PE over these pro- and anti-inflammatory biomarkers in HT patients.
Methods:
Following the guidelines established by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 statement, we conducted a systematic literature search in the PubMed, Cochrane, and Scopus databases. Outcomes included IL-6, TNF-alpha, and adpN. Effect size (ES) was calculated using the standardized mean difference with a 95% confidence interval (CI).
Results:
The PE group (aerobic modality) was associated with reduced IL-6 compared to the control group (ES: -0.53; 95% CI: -0.99 to -0.06 pg/mL; P = 0.026). However, the PE group did not show a significant effect on TNF-alpha and adpN levels (ES: -0.33; 95% CI: -0.79 to 0.13; P = 0.16 and ES: -0.20; 95% CI: -0.70 to 0.30 pg/mL; P = 0.444, respectively).
Conclusion:
PE is associated with IL-6 reductions, although TNF alpha and adpN did not change after this intervention in HT patients. Therefore, PE is an effective intervention to downregulate IL-6 in post-HT patients.
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