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| Maioli,N.A.; Zarpelon,A.C.; Mizokami,S.S.; Calixto-Campos,C.; Guazelli,C.F.S.; Hohmann,M.S.N.; Pinho-Ribeiro,F.A.; Carvalho,T.T.; Manchope,M.F.; Ferraz,C.R.; Casagrande,R.; Verri Jr,W.A.. |
| It is currently accepted that superoxide anion (O2•−) is an important mediator in pain and inflammation. The role of superoxide anion in pain and inflammation has been mainly determined indirectly by modulating its production and inactivation. Direct evidence using potassium superoxide (KO2), a superoxide anion donor, demonstrated that it induced thermal hyperalgesia, as assessed by the Hargreaves method. However, it remains to be determined whether KO2 is capable of inducing other inflammatory and nociceptive responses attributed to superoxide anion. Therefore, in the present study, we investigated the nociceptive and inflammatory effects of KO2. The KO2-induced inflammatory responses evaluated in mice were: mechanical hyperalgesia (electronic version of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Superoxide anion; Potassium superoxide; Pain; Inflammation; Oxidative stress. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015000400321 |
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| Magro,D.A.C.; Hohmann,M.S.N.; Mizokami,S.S.; Cunha,T.M.; Alves-Filho,J.C.; Casagrande,R.; Ferreira,S.H.; Liew,F.Y.; Cunha,F.Q.; Verri Jr,W.A.. |
| Interleukin (IL)-33, the most recent member of the IL family of cytokines, signals through the ST2 receptor. IL-33/ST2 signaling mediates antigen challenge-induced mechanical hyperalgesia in the joints and cutaneous tissues of immunized mice. The present study asked whether IL-33/ST2 signaling is relevant to overt pain-like behaviors in mice. Acetic acid and phenyl-p-benzoquinone induced significant writhing responses in wild-type (WT) mice; this overt nociceptive behavior was reduced in ST2-deficient mice. In an antigen-challenge model, ST2-deficient immunized mice had reduced induced flinch and licking overt pain-like behaviors. In the formalin test, ST2-deficient mice also presented reduced flinch and licking responses, compared with WT mice. Naive WT... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Interleukin-33; ST2; Pain; Nociception; Inflammation. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000700601 |
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