title: Hypertonic saline resuscitation maintains a more balanced profile of T-lymphocyte subpopulations in a rat model of hemorrhagic shock.
abstract: OBJECTIVE
  To investigate the potential and early effect of hypertonic saline resuscitation on T-lymphocyte subpopulations in rats with hemorrhagic shock.
  
  
  METHODS
  A model of rat with severe hemorrhagic shock was established in 18 Sprague-Dawley (SD) rats. The rats were randomly divided into Sham group, HTS group (hypertonic saline resuscitation group) and NS group (normal saline resuscitation group). Each group contained 6 rats. The CD4(+) and CD8(+) subpopulations of T-lymphocytes in peripheral blood were detected respectively before shock and after resuscitation by double antibody labelling and flow cytometry.
  
  
  RESULTS
  In the early stage after hemorrhagic shock, fluid resuscitation and emergency treatment, the CD4(+) lymphocytes of peripheral blood in HTS and NS groups markedly increased. Small volume resuscitation with HTS also induced peripheral CD8(+) lymphocytes to a certain extent, whereas NS resuscitation showed no effect in this respect. Consequently, compared with Sham and HTS groups, CD4(+)/CD8(+) ratio of peripheral blood in NS group was obviously increased, and showed statistically differences.
  
  
  CONCLUSIONS
  In this model of rat with severe hemorrhagic shock, small volume resuscitation with HTS is more effective than NS in reducing immunologic disorders and promoting a more balanced profile of T-lymphocyte subpopulations regulating network.
authors.affiliation: Department of Emergency and General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China. lls201@163.com
authors.forename: Yuan-qiang
authors.initials: YQ
authors.lastname: Lu
authors.forename: Xiu-jun
authors.initials: XJ
authors.lastname: Cai
authors.forename: Lin-hui
authors.initials: LH
authors.lastname: Gu
authors.forename: Han-zhou
authors.initials: HZ
authors.lastname: Mu
authors.forename: Wei-dong
authors.initials: WD
authors.lastname: Huang
mesh_terms: D000818:Animals; D001794:Blood Pressure; D016516:CD4-CD8 Ratio; D004195:Disease Models, Animal; D007552:Isotonic Solutions / Q000008:administration & dosage; D008297:Male; D051381:Rats; D017207:Rats, Sprague-Dawley; D012151:Resuscitation / Q000379:methods*; D012462:Saline Solution, Hypertonic / Q000008:administration & dosage*; D012771:Shock, Hemorrhagic / Q000276:immunology* / Q000503:physiopathology / Q000628:therapy*; D016176:T-Lymphocyte Subsets / Q000276:immunology*
chemical_list: D007552:Isotonic Solutions; D012462:Saline Solution, Hypertonic