Abstract: Abstract： Objective To evaluate the protective effects of oxymatrine injection on rats with endotoxic shock. Methods Wistar rat model of endotoxic shock was produced in this study. Twenty-four Wistar rats were randomly divided into normal control group (n=8), endotoxic shock group (n=8) and oxymatrine injection treatment group (n=8). Fifteen min⁃ utes after the infusion of LPS (15 mg/kg) from femoral vein, oxymatrine was injected from femoral vein in treatment group, then we observed the mean arterial pressure (MAP) for six hours. At the end of experiment blood samples were harvested for measurement of urea and creatinine (Cr), which reflect renal function. Also contents of IL-6, IL-10, TNF-α in the renal ho⁃ mogenate were detected. Results Oxymatrine can prevent progressive decrease of MAP in endotoxin shock treatment group. The contents of plasma urea and Cr were significantly higher in endotoxin shock group than those of control group. The contents of IL-6, IL-10 and TNF-α in renal homogenate increased obviously, but after the injection of oxymatrine, the contents of urea and Cr significantly decreased in treatment group, also IL- 6 and TNF- α were significantly declined. Conclusion Oxymatrine provides protection at renal function after endotoxin shock, and its mechanism may be related to inhibit the releasing of inflammatory cytokines in kidney.

Key words: sophora flavescens, matrine, shock, septic, kidney, oxymatrine, endotoxic shock, injury of renal func? tion