title: [Monocyte human leukocyte antigen-DR expression in elderly patients with sepsis].
abstract: OBJECTIVE
  To investigate the changes of human leukocyte antigen DR (HLA-DR) expression in the monocytes of elderly patients with sepsis.
  
  
  METHODS
  A total of 213 elderly patients were divided into 4 groups according to the criteria defined by the American College of Chest Physicians/ Society of Critical Care Medicine (ACCP/SCCM), namely the non-sepsis group (group A), sepsis group (group B), severe sepsis group (group C) and septic shock group (group D). Another 60 healthy subjects were recruited as the control group. HLA-DR expression in the monocytes from each subject was determined by flow cytometry, and the HLA-DR levels were compared between the groups.
  
  
  RESULTS
  Compared with that of the healthy control, HLA-DR expression was significantly increased in group A and lowered in group D. No significant differences were found between the control group and groups B and C. HLA-DR expression was significantly different between groups A, B, C, and D (P<0.01), increasing in the order of group D (32.74-/+13.4)%, group C (61.9-/+14.29)%, group B (69.99-/+12.8)%, and group A (85.06-/+15.37)%.
  
  
  CONCLUSIONS
  Although with multiple organ diseases and repeated or long-term hospitalization, the non-septic elderly patients do not show lowered expression of HLA-DR. In the elderly patients with sepsis and severe sepsis, HLA-DR expression is not a sensitive index, but obviously lowered HLA-DR expression may serve as a specific indicator in elderly patients with septic shock.
authors.affiliation: Department of Gerontology, Guangzhou General Hospital of Guangzhou Command, Guangzhou, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Wu
authors.forename: Ze
authors.initials: Z
authors.lastname: Liu
authors.forename: Jie
authors.initials: J
authors.lastname: Sun
authors.forename: Zhen-hui
authors.initials: ZH
authors.lastname: Guo
authors.forename: Lei
authors.initials: L
authors.lastname: Su
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015415:Biomarkers / Q000032:analysis; D005260:Female; D005434:Flow Cytometry; D006684:HLA-DR Antigens / Q000032:analysis / Q000096:biosynthesis*; D006801:Humans; D007963:Leukocytes, Mononuclear / Q000276:immunology*; D008297:Male; D018805:Sepsis / Q000276:immunology*; D012772:Shock, Septic / Q000276:immunology*
chemical_list: D015415:Biomarkers; D006684:HLA-DR Antigens