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Precipitated immune complexes of IgM induce the generation of reactive oxygen species by rabbit polymorphonuclear leucocytes BJMBR
Lucisano,Y.M.; de-Mello,A.M.; Vasques,E.R.; Mantovani,B..
We report that immune complexes of IgM (ICIgM) antibodies and ovalbumin in the form of a precipitate from the equivalence zone induce the generation of reactive oxygen species by rabbit blood polymorphonuclear leucocytes (PMN), as measured by the chemiluminescence (CL) production in the presence of luminol. The kinetics of CL generation induced by ICIgM is quite different from that induced by precipitated immune complexes of IgG (ICIgG): the maximum rate of CL production for ICIgM occurs around 14 min, whereas for ICIgG it occurs about 5 min after incubation with the cells. Also the triggering of the process requires a higher concentration of ICIgM than of ICIgG. Evidence is presented that these effects are not mediated by interaction of the antigen...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Reactive oxygen species; Polymorphonuclear leucocytes; Immune complexes; IgM; IgG.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000600011
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Epilepsy-induced electrocardiographic alterations following cardiac ischemia and reperfusion in rats BJMBR
Tavares,J.G.P.; Vasques,E.R.; Arida,R.M.; Cavalheiro,E.A.; Cabral,F.R.; Torres,L.B.; Menezes-Rodrigues,F.S.; Jurkiewicz,A.; Caricati-Neto,A.; Godoy,C.M.G.; Gomes da Silva,S..
The present study evaluated electrocardiographic alterations in rats with epilepsy submitted to an acute myocardial infarction (AMI) model induced by cardiac ischemia and reperfusion. Rats were randomly divided into two groups: control (n=12) and epilepsy (n=14). It was found that rats with epilepsy presented a significant reduction in atrioventricular block incidence following the ischemia and reperfusion procedure. In addition, significant alterations were observed in electrocardiogram intervals during the stabilization, ischemia, and reperfusion periods of rats with epilepsy compared to control rats. It was noted that rats with epilepsy presented a significant increase in the QRS interval during the stabilization period in relation to control rats...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Epilepsy; Heart; Acute myocardial infarction; Ischemia; Reperfusion.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015000200140
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