Acute exhaustive exercise regulates IL-2, IL-4 and MyoD in skeletal muscle but not adipose tissue in rats

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Date
2011-06-13Author
Rosa Neto, José Cesar [UNIFESP]
Lira, Fabio Santos de [UNIFESP]
Zanchi, Nelo E.
Oyama, Lila Missae [UNIFESP]
Pimentel, Gustavo Duarte [UNIFESP]
Santos, Ronaldo Vagner Thomatieli dos [UNIFESP]
Seelaender, Marilia
Nascimento, Claudia Maria da Penha Oller do [UNIFESP]
Type
ArtigoISSN
1476-511XIs part of
Lipids in Health and DiseaseDOI
10.1186/1476-511X-10-97Metadata
Show full item recordAbstract
Background: the purpose of this study was to evaluate the effect of exhaustive exercise on proteins associated with muscle damage and regeneration, including IL-2, IL-4 and MyoD, in extensor digitorum longus (EDL) and soleus muscles and mesenteric (MEAT) and retroperitoneal adipose tissues (RPAT).Methods: Rats were killed by decapitation immediately (E0 group, n = 6), 2 (E2 group, n = 6) or 6 (E6 group, n = 6) hours after the exhaustion protocol, which consisted of running on a treadmill at approximately 70% of VO(2max) for fifty minutes and then at an elevated rate that increased at one m/min every minute, until exhaustion.Results: the control group (C group, n = 6) was not subjected to exercise. IL-2 protein expression increased at E0 in the soleus and EDL; at E2, this cytokine returned to control levels in both tissues. in the soleus, IL-2 protein expression was lower than that in the control at E6. IL-4 protein levels increased in EDL at E6, but the opposite result was observed in the soleus. MyoD expression increased at E6 in EDL.Conclusion: Exhaustive exercise was unable to modify IL-2 and IL-4 levels in MEAT and RPAT. the results show that exhaustive exercise has different effects depending on which muscle is analysed.
Citation
Lipids in Health and Disease. London: Biomed Central Ltd, v. 10, 6 p., 2011.Sponsorship
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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- EPM - Artigos [17709]
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