Anti-CKMB monoclonal antibody, clone 9G2

Hyaluronan is a glycosaminoglycan, one of the chief components of the extracellular matrix. The aim of the present study is to investigate plasma hyaluronan levels among patients with acute myocardial infarction (AMI). This prospective study enrolled 56 consecutive patients with AMI who underwent percutaneous coronary intervention within 2 hours after admission. Plasma levels of hyaluronan were measured at the time of admission (baseline), and on the 7th and 30th day after AMI. Echocardiographic examinations were performed at baseline and on the 30th day after AMI. The hyaluronan levels were 33.2 +/- 3.1 ng/ml (mean +/- SD) at baseline, increased on the 7th day (46.2 +/- 5.9 ng/ml), and continued to remain high on the 30th day after AMI (50.1 +/- 5.1 ng/ml). There were significant correlations of the hyaluronan levels between baseline and on the 7th day (r = 0.535, p < 0.001) and between baseline and on the 30th day (r = 0.263, p = 0.05). Significant correlations were also found between hyaluronan levels on the 30th day, and the peak levels of CK-MB (r = 0.429, p = 0.001) or highly sensitive troponin levels (r = 0.360, p = 0.006). The hyaluronan levels were significantly higher on the 30th day after AMI in patients with anterior infarction, but not in patients with non-anterior infarction (p = 0.01 vs. p = 0.653). In conclusion, this is the first report that demonstrates the increase of plasma hyaluronan levels among patients with AMI.

The purpose of this study was to investigate the effects of luteolin (Lu) on myocardial ischemia-reperfusion (I/R) injury in rats. I/R model was established by ligating left anterior descending branch of coronary artery in rats. Cardiac hemodynamic measurement, myocardial infarction and damage assessment, antioxidant enzymes activities analysis, and various biochemical indexes of myocardial tissue were measured. Finally, the expression of proteins levels of Siti1/NLRP3/NF-kappa B pathway of myocardial tissue in rat were measured by Western Blotting. Lu obviously reduced the myocardial infarction in rats. Compared with sham group, I/R rats showed significant increase in LDH and CK-MB levels. In Lu group, LDH and CK-MB in I/R rats significantly decreased. In addition, Lu significantly reduced leukocyte infiltration compared with the sham group. On the other hand, Lu pretreatment effectively decreased the levels of cytokines in serum. The Siti1/NLRP3/NF-kappa B pathway in I/R group was significantly imbalance that in I/R group. Lu significantly restored the above protein changes. Lu may reduce I/R by regulation of Sirt1/NLRP3/NF-kappa B pathway.