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- Title
Creatine supplementation impairs airway inflammation in an experimental model of asthma involving P2 × 7 receptor.
- Authors
Garcia, Monique; Santos‐Dias, Alana; Bachi, André Luis Lacerda; Oliveira‐Junior, Manoel Carneiro; Andrade‐Souza, Adilson Santos; Ferreira, Sérgio César; Aquino‐Junior, Jefferson Comin Jonco; Almeida, Francine Maria; Rigonato‐Oliveira, Nicole Cristine; Oliveira, Ana Paula Ligeiro; Savio, Luiz Eduardo Baggio; Coutinho‐Silva, Robson; Müller, Tobias; Idzko, Marco; Siepmann, Timo; Vieira, Rodolfo Paula
- Abstract
Creatine (Cr) is a substrate for adenosine triphosphate synthesis, and it is the most used dietary supplement among professional and recreative athletes and sportsmen. Creatine supplementation may increase allergic airway response, but the cellular and molecular mechanisms are unknown. We used murine model of OVA‐induced chronic asthma and showed that Cr supplementation increased total proteins, ATP level, lymphocytes, macrophages, and IL‐5 levels in BALF, as well as IL‐5 in the supernatant of re‐stimulated mediastinal lymph nodes. IL‐5 and IL‐13 expression by epithelial cells and by peribronchial leukocytes were increased by Cr. Cr augmented the expression of P2 × 7 receptor by peribronchial leukocytes and by epithelial cells, and increased the accumulation of eosinophils in peribronchial space and of collagen fibers in airway wall. In human cells, while Cr induced a release of ATP, IL‐6, and IL‐8 from BEAS‐2B cells, whole blood cells, such as eosinophils, and CD4+ T cells, P2 × 7 receptor inhibitor (A740003) reduced such effects, as denoted by reduced levels of ATP, IL‐6, and IL‐8. Therefore, Cr supplementation worsened asthma pathology due to activation of airway epithelial cells and peribronchial leukocytes, involving purinergic signaling.
- Subjects
CREATINE; INFLAMMATION; ASTHMA -- Immunological aspects; DIETARY supplements; EPITHELIAL cells; IMMUNE response
- Publication
European Journal of Immunology, 2019, Vol 49, Issue 6, p928
- ISSN
0014-2980
- Publication type
Article
- DOI
10.1002/eji.201847657