Document Detail

Time course analysis of cardiac pacing-induced gene expression changes in the canine heart.
MedLine Citation:
PMID:  23014934     Owner:  NLM     Status:  Publisher    
Rapid right ventricular pacing in anesthetized dogs results in marked protection against ischemia and reperfusion-induced ventricular arrhythmias, 24 h later. We have previous evidence that this protection associates with altered expression of genes, encoding proteins involved in the delayed cardioprotection. However, the sequence of transcriptional changes occurring between the pacing stimulus and the test ischemia has not yet been elucidated. Thus, we designed studies in which the expression of 29 genes was examined by real-time PCR at various time intervals, i.e., immediately (0 h), 6, 12, and 24 h after short periods (4 times 5 min) of rapid (240 beats min(-1)) right ventricular pacing in the canine. Sham-operated dogs (the pacing electrode was introduced but the dogs were not paced) served as controls. Compared with these dogs, pacing induced an early up-regulation of genes which encode, for example, HSP90, MnSOD, ERK1, PKCε, Bcl2, and sGC; all these somehow relate to the early phase of the protection. These genes remained either up-regulated or, after a transient lower expression (around 6 h), were up-regulated again, suggesting their involvement in the delayed protection. There were also some genes which down-regulated soon after the pacing stimulus (e.g., Bax, Casp3, Casp9, MMP9, GSK3β), and showed also low expression 24 h later. Genes encoding eNOS and iNOS, as well as Cx43 were only up-regulated 12 h after pacing. We conclude that cardiac pacing induces time-dependent changes in gene expression, and the sequence of these changes is important in the development of the delayed protection.
Mária Kovács; Márton Gönczi; Edina Kovács; Agnes Végh
Related Documents :
15825164 - Preparation and characterization of calibration beads for sorting cells expressing a be...
11601764 - Efficient ablation by immunotoxin-mediated cell targeting of the cell types that expres...
18449544 - Agrobacterium-mediated transformation of apricot (prunus armeniaca l.) leaf explants.
24978294 - Polyplex micelles with thermoresponsive heterogeneous coronas for prolonged blood reten...
19624244 - Collagen type ii enhances chondrogenesis in adipose tissue-derived stem cells by affect...
24561194 - 42- and 63-bp anti-mdr1-sirnas bearing 2'-ome modifications in nuclease-sensitive sites...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-27
Journal Detail:
Title:  Molecular and cellular biochemistry     Volume:  -     ISSN:  1573-4919     ISO Abbreviation:  Mol. Cell. Biochem.     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-9-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0364456     Medline TA:  Mol Cell Biochem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Szeged, Dóm tér 12, 6720, Szeged, Hungary.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Protective effect of gallic acid isolated from Peltiphyllum peltatum against sodium fluoride-induced...
Next Document:  Dose-dependent effects of the herbicide mesotrione on soil cyanobacterial communities.