Abstract
8-iso-prostaglandin F(2 alpha)(8-iso-PGF(2 alpha)), a representative isoprostane, has been reported to be a reliable marker for oxidant stress in vivo. To examine if 8-iso-PGF(2 alpha)is generated in patients with acute myocardial infarction (AMI), we measured the level of immunoreactive 8-iso PGF(2 alpha)in the great cardiac vein as well as classical eicosanoids, 6-keto-prostaglandin F(1 alpha)(6-keto-PGF(1 alpha)) and thromboxane B(2)(TXB(2)) in the process of urgent coronary balloon angioplasty. Fourteen patients with anterior AMI were divided into two groups: the totally occluded (n=7) and the already perfused groups (n=7). In the former, transient elevation of 8-iso-PGF(2 alpha)was observed immediately after the angioplasty, i.e. the ratio of post-angioplasty level to pre-level was approximately 2.4 for 8-iso-PGF(2 alpha), 14 for 6-keto-PGF(1 alpha), and 5 for TXB(2). In the already perfused group, the levels of these eicosanoids were unchanged. In the totally occluded group, peak creatine phosphokinase in a peripheral vein was correlated with the level of 8-iso-PGF(2 alpha)(r(2)=0.841, P<0.01), but not with those of the other two eicosanoids. In conclusion, transcardiac 8-iso-PGF(2 alpha)generation is a reliable marker fo...Continue Reading
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