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Int. J. Mol. Sci. 2009, 10(2), 492-506; doi:10.3390/ijms10020492

Expression of Mipu1 in Response to Myocardial Infarction in Rats

1, 2, 3, 1, 1, 1, 1, 1 and 1,*
Received: 13 October 2008 / Revised: 20 November 2008 / Accepted: 1 December 2008 / Published: 3 February 2009
(This article belongs to the Section Molecular Pathology)
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Myocardial ischemic preconditioning up-regulated protein 1 (Mipu1) was cloned in our laboratory. Male Wistar rats were subjected to left anterior coronary artery ligation and sham-operation and sacrificed at 1 h, 3 h, 6 h, 12 h, 24 h, 3 d or 5 d after ligation. Expression of Mipu1 mRNA and protein were assessed by Northern blotting, real-time quantitative RT-PCR, In Situ hybridization and Western blotting. Expression of Mipu1 was up-regulated at 3 h and lasted to 12 h with a peak at 6 h. Mipu1 mRNA and protein signals express in the endothelium and myocardium in normal and infarcted heart, mainly in infarcted zone. Fluorescent immunocytochemistry showed that Mipu1 protein was localized to the nuclei of H9c2 myogenic cells and was upregulated after the cells being exposed to H2O2. These observations indicates that Mipu1 may play a role in maintaining vascular homeostasis and protecting the myogenic cells from being injured by ischemia-reperfusion or oxidation stress.
Keywords: Mipu1; Myocardial ischemia; Gene expression; Real-time RT-PCR Mipu1; Myocardial ischemia; Gene expression; Real-time RT-PCR
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Wang, G.; Zuo, X.; Liu, J.; Jiang, L.; Liu, Y.; Zheng, Y.; Zhang, B.; Xiao, X. Expression of Mipu1 in Response to Myocardial Infarction in Rats. Int. J. Mol. Sci. 2009, 10, 492-506.

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