title: Beneficial effects of alkaline phosphatase in septic shock.
abstract: OBJECTIVE
  Alkaline phosphatase may decrease the harmful effects of lipopolysaccharide by detoxifying lipid A. The aim of this study was to investigate whether administration of alkaline phosphatase is beneficial in a clinically relevant septic shock model.
  
  
  METHODS
  Interventional laboratory study.
  
  
  METHODS
  University hospital animal research laboratory.
  
  
  METHODS
  Fourteen fasted, anesthetized, invasively monitored, mechanically ventilated, female sheep (27.6 +/- 3.9 kg).
  
  
  METHODS
  Each animal received 1.5 g/kg body weight of feces intraperitoneally to induce sepsis. Ringer's lactate and a 6% hydroxyethyl starch solution were infused throughout the experiment to prevent hypovolemia. Two hours after feces injection, animals were randomized to alkaline phosphatase (60 units/kg intravenous bolus followed by a continuous infusion of 20 units/kg/hr for a total of 15 hrs) or no alkaline phosphatase (control group).
  
  
  RESULTS
  All animals were studied until their spontaneous death or for a maximum of 30 hrs. Plasma alkaline phosphatase concentrations decreased in the control group but increased in the treatment group following alkaline phosphatase administration. In the treatment group, the Pao2/Fio2 ratio was higher (p < .05), blood interleukin-6 concentrations were lower (p < .05), and the survival time was longer (median time 23.8 vs. 17 .0 hrs, p < 0.05) than in the control group. There were no significant differences in systemic hemodynamics or diuresis.
  
  
  CONCLUSIONS
  In this clinically relevant septic shock model, alkaline phosphatase administration improved gas exchange, decreased interleukin-6 concentrations, and prolonged survival time.
authors.affiliation: Department of Intensive Care, Erasme Hospital, Free University of Brussels, Belgium.
authors.forename: Fuhong
authors.initials: F
authors.lastname: Su
authors.forename: Ruud
authors.initials: R
authors.lastname: Brands
authors.forename: Zhen
authors.initials: Z
authors.lastname: Wang
authors.forename: Colin
authors.initials: C
authors.lastname: Verdant
authors.forename: Alejandro
authors.initials: A
authors.lastname: Bruhn
authors.forename: Ying
authors.initials: Y
authors.lastname: Cai
authors.forename: Willem
authors.initials: W
authors.lastname: Raaben
authors.forename: Marty
authors.initials: M
authors.lastname: Wulferink
authors.forename: Jean-Louis
authors.initials: JL
authors.lastname: Vincent
mesh_terms: D000469:Alkaline Phosphatase / Q000097:blood / Q000494:pharmacology*; D000818:Animals; D004195:Disease Models, Animal; D005260:Female; D007262:Infusions, Intravenous; D015850:Interleukin-6 / Q000097:blood; D010100:Oxygen / Q000097:blood; D011659:Pulmonary Gas Exchange; D011897:Random Allocation; D012756:Sheep; D012772:Shock, Septic / Q000188:drug therapy*; D016019:Survival Analysis
chemical_list: D015850:Interleukin-6; D000469:Alkaline Phosphatase; D010100:Oxygen