title: Proteomic analysis of myocardial tissue from the border zone during early stage post-infarct remodelling in rats.
abstract: OBJECTIVE
  Long-term outcome of patients after myocardial infarction (MI) largely depends on the extent of post-infarct remodelling. To explore the molecular mechanism of remodelling, comparative proteomic analysis was undertaken to identify differential myocardial proteome profiles expressed in the border zone of the post-MI heart.
  
  
  RESULTS
  Two-dimensional gel electrophoresis and matrix-assisted laser desorption/ionization tandem time-of-flight mass spectrometry were used to identify the differential protein profiles expressed in the border zone at specific time points (Days 0, 1, 4, and 10 post-infarction) in a permanent rat MI model. We identified 96 differential protein spots, corresponding to 69 proteins. Cluster analysis exhibited five main temporal expression patterns corresponding to the three phases of early stage remodelling. The alteration in expression was supported by reverse transcription-polymerase chain reaction, western blotting, and immunohistochemical analysis of three selected proteins. Bioinformatics analysis revealed that the proteins in each pattern were functionally related to specific cell processes in remodelling, such as ischaemia, inflammation, and proliferation.
  
  
  CONCLUSIONS
  A differential myocardial proteome profile was identified in the border zone during early stage post-infarct remodelling. Bioinformatics analysis indicated a possible role of these proteins in remodelling. Proteomics data provided the basis for further functional study of these proteins and for identifying potential molecular targets with therapeutic anti-remodelling effects.
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Nanjing First Hospital Affiliated to Nanjing Medical University, 68 Changle Road, Nanjing, Jiangsu 210006, China.
authors.forename: Fei
authors.initials: F
authors.lastname: Xiang
authors.forename: Zhonghua
authors.initials: Z
authors.lastname: Shi
authors.forename: Xuejiang
authors.initials: X
authors.lastname: Guo
authors.forename: Zhibing
authors.initials: Z
authors.lastname: Qiu
authors.forename: Xujun
authors.initials: X
authors.lastname: Chen
authors.forename: Fuhua
authors.initials: F
authors.lastname: Huang
authors.forename: Jiahao
authors.initials: J
authors.lastname: Sha
authors.forename: Xin
authors.initials: X
authors.lastname: Chen
mesh_terms: D000818:Animals; D019295:Computational Biology; D009203:Myocardial Infarction / Q000378:metabolism*; D009206:Myocardium / Q000737:chemistry* / Q000378:metabolism; D020543:Proteome; D040901:Proteomics; D051381:Rats; D011916:Rats, Inbred F344; D020257:Ventricular Remodeling / Q000502:physiology*
chemical_list: D020543:Proteome