title: Carbon Monoxide Releasing Molecule Accelerates Reendothelialization after Carotid Artery Balloon Injury in Rat.
abstract: OBJECTIVE
  This study was aimed to investigate the effects of carbon monoxide releasing molecule (CORM-2), a novel carbon monoxide carrier, on the reendothelialization of carotid artery in rat endothelial denudation model.
  
  
  METHODS
  Male rats subjected to carotid artery balloon injury were treated with CORM-2, inactive CORM-2 (iCORM-2) or dimethyl sulfoxide (DMSO). The reendothelialization capacity was evaluated by Evans Blue dye and the immunostaining with anti-CD31 antibody. The number of circulating endothelial progenitor cells (EPCs) was detected by flow cytometry. The proliferation, migration, and adhesion of human umbilical vein endothelial cells (HUVECs) were assessed by using [3H]thymidine, Boyden chamber and human fibronectin respectively. The expressions of protein were detected by using western blot analysis.
  
  
  RESULTS
  CORM-2 remarkably accelerated the re-endothelialization 5 d later and inhibited neointima formation 28 d later. In addition, the number of peripheral EPCs significantly increased in CORM-2-treated rats than that in iCORM-2 or DMSO-treated rats after 5 d later. In vitro experiments, CORM-2 significantly enhanced the proliferation, migration and adhesion of HUVECs. The levels of Akt, eNOS phosphorylation, and NO generation in HUVECs were also much higher in CORM-2 treated group. Blocking of PI3K/Akt/eNOS signaling pathway markedly suppressed the enhanced migration and adhesion of HUVECs induced by CORM-2.
  
  
  CONCLUSIONS
  CORM-2 could promote endothelial repair, and inhibit neointima formation after carotid artery balloon injury, which might be associated with the function changes of HUVECs regulated by PI3K/Akt/eNOS pathway.
authors.affiliation: Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, China.
authors.forename: Qing Song
authors.initials: QS
authors.lastname: Hu
authors.affiliation: Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, China.
authors.forename: Yang Xin
authors.initials: YX
authors.lastname: Chen
authors.affiliation: Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, China.
authors.forename: Qing Sheng
authors.initials: QS
authors.lastname: Huang
authors.affiliation: Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, China.
authors.forename: Bing Qing
authors.initials: BQ
authors.lastname: Deng
authors.affiliation: Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, China.
authors.forename: Shuang Lun
authors.initials: SL
authors.lastname: Xie
authors.affiliation: Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, China.
authors.forename: Jing Feng
authors.initials: JF
authors.lastname: Wang
authors.affiliation: Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong, China.
authors.forename: Ru Qiong
authors.initials: RQ
authors.lastname: Nie
mesh_terms: D000818:Animals; D002248:Carbon Monoxide / Q000378:metabolism / Q000494:pharmacology*; D020212:Carotid Artery Injuries / Q000188:drug therapy* / Q000276:immunology / Q000378:metabolism / Q000473:pathology; D017536:Carotid Artery, Common / Q000187:drug effects* / Q000276:immunology / Q000378:metabolism / Q000473:pathology; D002448:Cell Adhesion / Q000187:drug effects; D004195:Disease Models, Animal; D042783:Endothelial Cells / Q000187:drug effects* / Q000276:immunology / Q000378:metabolism / Q000473:pathology; D004730:Endothelium, Vascular / Q000187:drug effects / Q000378:metabolism* / Q000473:pathology; D006801:Humans; D008297:Male; D051381:Rats; D017207:Rats, Sprague-Dawley
chemical_list: D002248:Carbon Monoxide
keywords: Carbon monoxide; Neointima formation; Reendothelialization; Vascular injury