Abstract 77: Effects Of Short-term Fasting On Mortality, Inflammatory And Coagulation Responses To Endotoxin-induced Shock In Rats

Abstract

Obesity is a common problem in sepsis. We evaluated the effects of short-term fasting on the mortality rate, inflammatory and coagulation response in rats with endotoxin-induced shock. Male Wister rats (n=30) were used. Animals were randomly assigned to one of two groups: control group (n=15), receiving intravenous Escherichia coli endotoxin (15 mg/kg over 2 mins); fasted group (n=15), short-term fasting for 3 days before endotoxin injection. The mortality rates, hemodynamics, arterial blood gases, plasma cytokine concentrations and coagulation parameters were measured. The mortality rates at 8hrs after endotoxin injection were 75% and 7% for control and fasted groups, respectively. Hypotension and the increases of TNF-alpha and interleukin-6 concentrations were less for the fasted group than the control group. Moreover, the increase of the prothrombin-time and thrombin-antithrombin III complex were less for the fasted group than the control group. The present study showed that short-term fasting inhibited hypotension and elevations in cytokine concentrations, reducing the mortality rate of rats with endotoxin-induced shock. Moreover, short-term fasting inhibited the elevation of coagulation parameters. These findings suggest that short-term fasting may exert favorable effects during sepsis and septic shock. Survival curves for fasted and control groups