title: Haem oxygenase-1 expression and coronary heart disease--association between levels of haem oxygenase-1 expression and angiographic morphology as well as the quantity of coronary lesions.
abstract: OBJECTIVE
  The aim of this paper was to investigate the association between levels of HO-1 expression and angiographic morphology as well as the quantity of coronary lesions in patients with coronary heart disease (CHD).
  
  
  METHODS
  110 patients with CHD were diagnosed by coronary angiography which contained coronary lesions in some way. Firstly, the patients were divided into 3 groups according to the angiographic morphology of their coronary lesions: type I (smooth borders) group (n1= 36), type II (irregular borders) group (n2= 48) and type III (long and irregular lesions) group (n3= 26). Secondly, the patients were split into a further 3 groups, named: single-vessel group (SV, 38 cases), double-vessel group (DV, 44 cases) and multi-vessel group (MV, 28 cases) according to the number of coronary lesions. Another 30 patients with normal coronary arteries (diagnosed by coronary angiography) were selected as the control group. The levels of HO-1 protein expression in monocytes and lymphocytes from the subjects were tested by immunohistochemistry and Western blot. A computer picture analysing system was also used to measure the levels of HO-1 protein expression.
  
  
  RESULTS
  HO-1 protein was located in cell plasma and the levels of HO-1 protein expression in patients with CHD were significantly higher than in those without CHD (p < 0.01). There were significant differences of HO-1 expression among patients with CHD. Patients with type III lesions had the highest levels, followed by those with type II lesions and the lowest levels were found in patients with type I lesions (p < 0.01). Also, levels of HO-1 protein expression in patients with multi-vessel disease and double-vessel disease were significantly higher than in those with single-vessel disease (p < 0.01).
  
  
  CONCLUSIONS
  There is a higher expression of HO-1 in patients with CHD and the levels of HO-1 protein are associated with severity of CHD angiographically.
authors.affiliation: Department of Cardiology, The First Affiliated Hospital, Medical College, Shantou University, Shantou Guangdong, China.
authors.forename: Yu-Guang
authors.initials: YG
authors.lastname: Li
authors.forename: Dong-Ming
authors.initials: DM
authors.lastname: Wang
authors.forename: Song-Ming
authors.initials: SM
authors.lastname: Chen
authors.forename: Xue-Rui
authors.initials: XR
authors.lastname: Tan
authors.forename: Xiao-Yi
authors.initials: XY
authors.lastname: Fang
authors.forename: Jie-Wen
authors.initials: JW
authors.lastname: Wu
authors.forename: Guo-Hong
authors.initials: GH
authors.lastname: Zhang
authors.forename: Rui-Qing
authors.initials: RQ
authors.lastname: Mai
mesh_terms: D000368:Aged; D015153:Blotting, Western; D017023:Coronary Angiography; D003327:Coronary Disease / Q000000981:diagnostic imaging / Q000201:enzymology* / Q000473:pathology; D003331:Coronary Vessels / Q000201:enzymology / Q000473:pathology; D003593:Cytoplasm / Q000201:enzymology / Q000473:pathology; D005260:Female; D006419:Heme Oxygenase (Decyclizing) / Q000097:blood*; D006801:Humans; D007124:Immunoenzyme Techniques; D008214:Lymphocytes / Q000201:enzymology / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009000:Monocytes / Q000201:enzymology / Q000473:pathology; D011379:Prognosis
chemical_list: D006419:Heme Oxygenase (Decyclizing)